Addendum to Off-Site Human Health Risk …...AECOM RAAF Base Williamtown Addendum to Off-Site Human...

Addendum to Off-Site Human Health Risk Assessment - July 2016

Department of Defence

6052715304 April 2017 Revision 1

RAAF Base Williamtown, Williamtown NSW

Sensitivity Assessment of Outcomes for Food Standards Australia New Zealand Tolerable Daily Intake

AECOM RAAF Base Williamtown Addendum to Off-Site Human Health Risk Assessment - July 2016 – Sensitivity Assessment of Outcomes of Food Standards Australia New Zealand Tolerable Daily Intakes

04-Apr-2017 Prepared for – Department of Defence – ABN: 68 706 814 312

Addendum to Off-Site Human Health Risk Assessment - July 2016 Sensitivity Assessment of Outcomes of Food Standards Australia New Zealand Tolerable Daily Intakes

Client: Department of Defence

ABN: 68 706 814 312

Prepared by

AECOM Australia Pty Ltd Level 21, 420 George Street, Sydney NSW 2000, PO Box Q410, QVB Post Office NSW 1230, Australia T +61 2 8934 0000 F +61 2 8934 0001 www.aecom.com ABN 20 093 846 925

04-Apr-2017

Job No.: 60527153

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© AECOM Australia Pty Ltd (AECOM). All rights reserved.

AECOM has prepared this document for the sole use of the Client and for a specific purpose, each as expressly stated in the document. No other party should rely on this document without the prior written consent of AECOM. AECOM undertakes no duty, nor accepts any responsibility, to any third party who may rely upon or use this document. This document has been prepared based on the Client’s description of its requirements and AECOM’s experience, having regard to assumptions that AECOM can reasonably be expected to make in accordance with sound professional principles. AECOM may also have relied upon information provided by the Client and other third parties to prepare this document, some of which may not have been verified. Subject to the above conditions, this document may be transmitted, reproduced or disseminated only in its entirety.



Quality Information

Document Addendum to Off-Site Human Health Risk Assessment - July 2016

Ref 60527153

Date 04-Apr-2017

Prepared by Lesley Limage and Roisin Smit

Reviewed by Amanda Lee

Revision History

Rev Revision Date Details Authorised

Name/Position Signature

1 04-Apr-2017 Final Michael Jones Director - Environment NSW & ACT



Table of Contents 1.0 Introduction 1

1.1 Background 1 1.2 Sensitivity Assessment 1 1.3 Objective 2

2.0 Issues Identification 3 3.0 Data Collection and Evaluation 4 4.0 Exposure Assessment 5 5.0 Toxicity Assessment 6

5.1 TDI Adopted in AECOM (2016) HHRA Report 6 5.2 TDI Adopted in Sensitivity Assessment 7 5.3 Background Exposure 9

6.0 Risk Characterisation 10 6.1 Sensitivity Assessment Hazard Quotients and Hazard Indices 10

7.0 Conclusions 11 7.1 Comparison with AECOM (2016) HHRA Report Outcomes 11 7.2 Typical exposure scenarios 11

7.2.1 No change to AECOM (2016) HHRA Report Low and Acceptable Risk Outcomes 11

7.2.2 No change to AECOM (2016) HHRA Report Elevated Risk Outcomes 12 7.2.3 Changes to AECOM (2016) HHRA Report Risk Outcomes 12

7.3 Upper exposure scenarios 12 7.3.1 No Change to AECOM (2016) HHRA Report Low and Acceptable Risk

Outcome 12 7.3.2 No change to AECOM (2016) HHRA Report Elevated Risk Outcomes 13 7.3.3 Changes to AECOM (2016) HHRA Report Risk Outcomes 13

7.4 Exposure Pathways Potentially Requiring Management 14 7.4.1 No change to AECOM (2016) HHRA Report Recommendations 14 7.4.2 Changes to the AECOM (2016) HHRA Report Recommendations 15

7.5 Exposure of infants to breast milk 15 7.6 Summary 16 7.7 Discussion of Key Exposure Pathways 21

7.7.1 Incidental Ingestion of Groundwater within the Southern Area 21 7.7.2 Incidental Ingestion of Surface Water 21 7.7.3 Consumption of Locally Sourced Seafood 22 7.7.4 Consumption of Locally Grown Fruit and Vegetables 22 7.7.5 Consumption of Locally Grown Beef 22

8.0 References 23

Appendix A Hazard Indices A

Appendix B Hazard Indices for each Exposure Pathway B

Appendix C HHRA Calculations C

List of Tables

Table 1 TDI adopted in the sensitivity assessment 8 Table 2 Summary of HHRA Conclusions for Residents based on FSANZ TDI 17



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1.0 Introduction

1.1 Background

AECOM Australia Pty Ltd (AECOM) was engaged by the Department of Defence (Defence) to undertake a quantitative human health risk assessment (HHRA) as part of Defence’s response to the detection of per- and poly-fluorinated alkyl substances (PFAS) in the environment in association with the historic use of aqueous film forming foam (AFFF) at the Royal Australian Air Force (RAAF) Base Williamtown, New South Wales (NSW) (the Site). The HHRA is documented in:

AECOM, 2016. Off-Site Human Health Risk Assessment – July 2016, RAAF Base Williamtown Stage 2B Environmental Investigation. 8 August 2016, herein referred to as AECOM (2016) HHRA Report.

The AECOM (2016) HHRA Report adopted toxicity reference values (TRV) presented as a Tolerable Daily Intake (TDI) which were recommended by an independent toxicologist as being appropriate for use and were consistent with subsequent Australian interim guidance on PFAS toxicity (enHealth, 2016a). AECOM was requested by Defence to complete a sensitivity assessment in order to evaluate the impact of adopting the Food Standards Australia New Zealand (FSANZ) TDI for perfluorooctane sulfonate (PFOS), perfluorooctanoic acid (PFOA) and perfluorohexane sulfonate (PFHxS). The FSANZ TDI were provided in the following document:

Food Standards Australia New Zealand Hazard assessment report – Perfluorooctane sulfonate (PFOS), Perfluorooctanic Acid (PFOA), Perfluorohexane sulfonate (PFHxS) (herein referred to as the FSANZ Report).

This Addendum to the AECOM (2016) HHRA Report documents the outcomes of this sensitivity assessment and must be read in conjunction with the AECOM (2016) HHRA Report.

Subsequent to preparation of the AECOM (2016) HHRA Report, AECOM was engaged by Defence to undertake a 2017 environmental investigation. The scope of work included in the 2017 environmental investigation includes additional groundwater, surface water, sediment, soil and biota sampling, hydrogeological investigations and trials into the plant uptake of PFAS. The results of these ongoing investigations will be used to refine the conceptual site model (CSM), address data gaps identified by the AECOM (2016) HHRA Report and prepare an updated HHRA Report in the second half of 2017.

1.2 Sensitivity Assessment

The risk assessment process involves a number of assumptions regarding Site conditions, human exposure and chemical toxicity. These assumptions are based on site-specific information (where available), but it is not always possible to fully predict or describe site conditions and human activities at a site for the exposure period considered in the risk assessment. The assumptions adopted in the AECOM (2016) HHRA Report have therefore been selected to provide a deliberate margin of safety for all scenarios assessed.

Sensitivity assessment is the process of changing one HHRA input parameter while leaving the others constant and determining the effect on the output.

The sensitivity assessment documented in this Addendum explores the effect of adopting the FSANZ TDI for PFOS, PFOA and PFHxS on the estimated hazard index (HI).

The FSANZ TDI adopt a similar approach to the guidance published by enHealth (2016a), which indicates that the toxicity of PFHxS should be considered to be equal to that of PFOS. All other assumptions and parameters adopted by this sensitivity assessment are consistent with the AECOM (2016) HHRA Report. That is, the TDI is the only HHRA input parameter that has been changed in this sensitivity assessment. All other parameters are consistent with the AECOM (2016) HHRA Report.



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1.3 Objective

The objective of this sensitivity assessment is to assess whether the adoption of the FSANZ TDI for PFOS, PFOA and PFHxS (with all other parameters consistent with the AECOM (2016) HHRA Report) would affect the conclusions of the AECOM (2016) HHRA Report.



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2.0 Issues Identification Issues identification is the process of planning and scoping the risk assessment and determining the potential source-pathway-receptor (SPR) linkages that will form the basis of the HHRA. The Issues Identification stage of the HHRA was documented in Section 3 of the AECOM (2016) HHRA Report. Specifically, this stage includes:

Development of a preliminary Conceptual Site Model (CSM), which identifies the following:

- the source(s) of PFAS contamination

- potential PFAS contaminant transport and/or migration pathways

- potential human receptors that may be exposed to PFAS contamination via complete and potentially significant exposure pathways.

The CSM was documented in Section 4.6 of the AECOM (2016) HHRA Report. No amendments have been made to the CSM considered in this sensitivity assessment.

Identification of PFOS, PFOA, PFHxS and perfluorohexanoic acid (PFHxA) as Contaminants of Potential Concern (CoPC), as documented in Section 4.8 of the AECOM (2016) HHRA Report.



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3.0 Data Collection and Evaluation Data evaluation is the process of reviewing the available data and determining whether it is appropriate for use in the risk assessment. Specifically, this stage includes:

Review of the relevant available information relating to previous investigations conducted in relation to the Stage 2B Investigation Area. The Stage 2B Investigation Area, including the Southern Area, is defined in Table 1 of the AECOM (2016) HHRA Report.

Assessment of the quality and quantity of data available for use in the HHRA.

Assessment of the data gaps and their significance with respect to the HHRA.

The data considered in this sensitivity assessment are presented in Section 3 of the AECOM (2016) HHRA Report. No further data have been included in this sensitivity assessment (i.e. no additional data collected after April 2016 have been adopted).

As discussed in the AECOM (2016) HHRA Report, based on assessment of the distribution of unsaturated soil and groundwater PFAS concentrations, it was considered that the shallow groundwater data collected from the area immediately south of the Site (i.e. the Southern Area) was not consistent with the shallow groundwater data reported for the broader Stage 2B Investigation Area (excluding the Site). Therefore, for the purpose of the HHRA, risk to human health was been assessed separately in the Southern Area and the Stage 2B Investigation Area (excluding the Site and Southern Area). These areas are presented on Figure F2, Appendix A of the AECOM (2016) HHRA Report.

Given that the estimated extent of the Southern Area is defined by higher PFAS concentrations in unsaturated soil and groundwater, it is independent of the adopted TDI and has therefore not changed as part of this sensitivity assessment.



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4.0 Exposure Assessment Exposure assessment is the process of estimating the magnitude, frequency, extent and duration of human exposure to PFAS and refinement of the CSM based on these considerations. The exposure assessment is presented in Section 5 of the AECOM (2016) HHRA Report.

To account for variability in human behavioural patterns, while remaining protective of general population exposures, the HHRA considered a range of exposure assumptions:

‘Typical’ exposure was based on mean or median parameters for the general population. The use of typical values was intended to capture the typical and average exposure for the majority of the population based on a combination of ‘common sense’ professional judgement and published values regarding exposure frequency and potential PFAS ingestion. It is anticipated that the assessment of the typical scenario will be applicable to the majority of the population.

Upper range exposure was based on reasonable maximum exposure (RME) parameters. The use of upper values was intended to:

- be representative of a reasonable maximum exposure

- capture receptors who undertake activities at a higher frequency or ingest more than the average person

- provide an estimate of exposure that is reflective of the upper/high end of the scale of potential exposure. It is considered that the exposure frequency and quantity assumed by the upper scenario will only apply to small percentage of the population.

It was noted that both the typical and upper range exposure assumptions were coupled with Exposure Point Concentrations (EPC) for soil, groundwater, sediment and surface water determined based on applying a range of statistical approaches to the available data (for example maximum reported concentrations or 95th percentile concentrations). As a result, the HHRA outcomes are considered to be conservative and likely to over-estimate, rather than under-estimate, risks to human health. In particular, the combination of upper exposure assumptions (which were based on high exposure frequency and/or high exposure quantity) and maximum or 95th percentile (where statistical analysis was appropriate) EPC is considered likely to be highly conservative. For example, the upper exposure scenario for consumption of finfish is based on the assumption that the recreational fisher consumes 32.8 g (child) and 65.5 g (adult) of finfish every day for a lifetime (6 years for a child and 35 years for an adult) and that all of the finfish consumed over the lifetime contains the median reported PFAS concentration.

No amendments have been made in this sensitivity assessment to the adopted exposure assumptions and parameters nor to the adopted EPC originally adopted by the AECOM (2016) HHRA Report.



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5.0 Toxicity Assessment Toxicity assessment is the process of understanding the health effects associated with exposure to PFAS and making a quantitative link between the degree of exposure and the effect realised. Hazard identification is discussed in Section 6.1 of the AECOM (2016) HHRA Report.

5.1 TDI Adopted in AECOM (2016) HHRA Report

At the time of commencement of the AECOM (2016) HHRA Report, there were no published Australian toxicity profiles for PFAS. Consequently, AECOM used current toxicological profiles prepared by Toxconsult Pty Ltd (ToxConsult) for the following PFAS to inform the HHRA:

PFOS

PFOA

1H,1H,2H,2H-perfluoro decane sulfonate (8:2 FtS)

1H, 1H, 2H, 2H- perfluoro octane sulfonate fluorotelemer (6:2 FtS)

PFHxS

PFHxA.

The toxicity assessment involved:

description of toxicokinetics, including adsorption, distribution, metabolism, elimination and kinetic modelling

review of available animal studies including acute and repeat dose toxicity, chronic toxicity, carcinogenicity, reproductive toxicity, immunotoxicity, neurotoxicity and genotoxicity

review of available epidemiological studies, pivotal modes of action, identification of potentially sensitive sub-populations

establishment of background concentrations

review of all available TDI published by state, national or international authorities and provide recommendation of defensible TDI for use in the HHRA.

Toxconsult recommended:

adoption of the TDI for PFOS and PFOA from the European Food Safety Authority (EFSA, 2008), which were consistent with subsequent Australian interim guidance on PFAS toxicity (enHealth, 2016a).

it be assumed that the toxicity of PFHxS should be considered to be equal to that of PFOS and therefore that the PFOS TDI be adopted for the assessment of potential exposure to PFHxS. This approach was also consistent with subsequent Australian interim guidance on PFAS toxicity (enHealth, 2016a).

that there was sufficient data from international research to derive a chemical specific TDI for PFHxA. The value proposed was consistent with a value previously published by the Swedish National Food Agency, however no TDI for this compound has subsequently been published for use in Australia.

that the toxicological information for 6:2 FtS and 8:2 FtS was too limited to recommend defensible chemical-specific TRVs for use in HHRA.

AECOM undertook a quantitative assessment of potential risk for PFAS compounds for which a defensible TDI was identified by the ToxConsult toxicity profiles (i.e. PFOS, PFOA, PFHxS and PFHxA).

As discussed in Section 6.2 of the AECOM (2016) HHRA Report, PFOS, PFOA, PFHxS and PFHxA have been assessed as threshold chemicals, as standard tests for genotoxic carcinogenicity have been negative.



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Potential health effects that are assessed on the basis of a threshold dose response utilise a TRV which is typically termed an acceptable daily intake (ADI) or TDI or reference dose (RfD). For the purpose of this assessment, the TRV adopted has been termed a TDI. A TDI is a lifetime daily chemical intake below which it is considered unlikely that adverse effects would occur in human populations, including sensitive sub-groups (e.g. the very young or elderly). Hence, the TDI relates to intakes from all sources, including source-related impacts and background intakes (where relevant). It is important to note that where estimated intakes exceed the TDI, it does not necessarily mean that adverse health effects will occur.

5.2 TDI Adopted in Sensitivity Assessment

This sensitivity assessment adopts the PFOS, PFOA and PFHxS TDI from the FSANZ Report. The TDI recommended by ToxConsult (2016) for PFHxA has been retained in this sensitivity assessment as no additional guidance for the assessment of this chemical was provided in the FSANZ Report.

A summary of the oral (i.e. ingestion) exposure threshold TDI from the AECOM (2016) HHRA Report compared with the more conservative TDI from the FSANZ Report (used to inform this sensitivity assessment) are presented in Table 1. No TRV specific to inhalation or dermal exposure (i.e. exposure via breathing or skin contact) have been identified for PFAS that would allow a separate evaluation of intakes via these pathways. Hence, the TDI from the FSANZ Report for the oral exposure pathway have also been adopted for direct contact and inhalation pathways in the sensitivity assessment.



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Table 1 TDI adopted in the sensitivity assessment

Compound Application Oral TDI (mg/kg bw/day)

Source Notes on Derivation

PFOS

TDI adopted in this sensitivity assessment

2 x 10-5 FSANZ Report Point of departure: a Human Equivalent Dose (HED) No Observed Adverse Effect Level (NOAEL) of 0.0006 mg/kg/day identified for female rats (Luebker et al 2005).

The critical effects considered were parental toxicity (decreased body weight gain and food consumption) and offspring toxicity (reduced body weight and weight gain).

Uncertainty Factor (UF) of 30

TDI adopted in the AECOM (2016) HHRA Report

1.5 x 10-4 EFSA (2008) – also adopted by enHealth (2016)

Point of departure: A NOAEL of 0.03 mg/kg/day based on a 26-week study on monkeys (Seacat et al., 2002)

UF of 200.

PFOA


1.6 x 10-4 FSANZ Report Point of departure: an HED Lowest Observed Adverse Effect Level (LOAEL) of 0.0049 mg/kg/day identified for mice (Lau et al, 2006).

The critical effect considered was foetal toxicity. UF of 30



Point of departure: Benchmark dose lower confidence limit for a 10% response (BMDL10) of 0.3 mg/kg/day based on studies of liver effects in rats by Perkins et al., 2004; Sibinski, 1983; Butenhoff et al., 2004 and studies in mice by Lau et al., 2006

UF of 200.

PFHxS


2 x 10-5 FSANZ Report The FSANZ Report states “there was insufficient toxicological and epidemiological information to justify establishing a TDI for PFHxS. In the absence of a TDI, it is reasonable to conclude that the enHealth (2016) approach of using the TDI for PFOS is likely to be conservative and protective of public health as an interim measure”.

See notes above for PFOS oral TDI



ToxConsult (2016) recommended adopting the TDI for PFOS, consistent with subsequent advice from enHealth (2016).

PFHxA

TDI adopted in both the AECOM (2016) HHRA Report and this sensitivity assessment

1 x 10-1 ToxConsult (2016) Point of departure: a NOAEL of 30 mg/kg/day identified for female rats (Klaunig et al 2015).

UF of 300



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5.3 Background Exposure

Background exposure to chemicals present in the environment can occur as a result of everyday activities or natural sources. PFAS may be present in food, water and consumer products and represent non-Site based sources of exposure. This is commonly referred to as ‘background exposure’. In accordance with the approach adopted in the National Environmental Protection (Assessment of Site Contamination) Measure 1999 as amended in 2013 (ASC NEPM 2013) background exposure has been taken into account through adjustment (reduction) of TDI to account for non-Site related exposure.

The background exposure concentrations adopted by this sensitivity assessment are consistent with the AECOM (2016) HHRA Report, as documented in Section 6.3.



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6.0 Risk Characterisation Risk characterisation is the process of summarising information from the previous stages of the risk assessment approach and integrating it into a quantitative expression of risk. Specifically, this stage includes:

Comparison of estimated contaminant intake to adopted TDI for each CoPC (i.e. calculation of hazard quotients):

- the hazard quotient for each CoPC (PFOS, PFOA, PFHxS and PFHxA) was summed to provide a HI for each individual exposure pathway

- the HI for each individual exposure pathway was then further summed to produce a cumulative risk estimate for each identified multi-pathway exposure scenario.

Comparison of risk estimates against risk acceptance criteria recommended and/or adopted by State and Federal regulatory agencies as appropriate

Discussion of the key uncertainties associated with the HHRA process and the assumptions and exposure modelling undertaken for this HHRA

Consideration of the risk estimates in the context of the identified uncertainties.

The risk characterisation stage was presented in Section 7 of the AECOM (2016) HHRA Report.

This Addendum should be read in the context of the uncertainty assessment reported in Section 8 of the AECOM (2016) HHRA Report.

6.1 Sensitivity Assessment Hazard Quotients and Hazard Indices

A table of hazard indices based on the adoption of the FSANZ TDI (as described in Table 1) compared to hazard indices based on the TDI adopted in the AECOM (2016) HHRA Report for each scenario is presented in Appendix A, while a breakdown of the HI calculated for each of the individual exposure pathways that make up the scenarios is illustrated in Appendix B. The revised HHRA models for each scenario are provided in Appendix C.



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7.0 Conclusions

7.1 Comparison with AECOM (2016) HHRA Report Outcomes

The overall outcome of adopting more conservative (i.e. lower) FSANZ TDI in this sensitivity assessment is an increase in the estimated HI for each pathway/scenario modelled. A comparison of the estimated HI based on the FSANZ TDI to those presented in the AECOM (2016) HHRA Report is presented in Appendix A. The impact of adopting the FSANZ TDI on the outcomes and recommendations of the AECOM (2016) HHRA Report is presented in Section 7.2 to Section 7.5.

Where the total HI for a particular exposure scenario following adoption of the FSANZ TDI exceeded the target value of 1, a review was undertaken of the individual pathways that contributed to this risk estimate. Individual pathways with an individual HI of greater than 0.5 are considered to have the greatest potential to result in elevated risks.

The below conclusions should be read in conjunction with the data gaps presented in Section 3.9 of the AECOM (2016) HHRA Report and the sensitivity assessment presented in Section 8 of the AECOM (2016) HHRA Report.

A summary of the conclusions is presented in Table 2, Section 7.6.

7.2 Typical exposure scenarios

As described by Section 4, the ‘Typical’ exposure scenarios were based on typical or average exposure parameters considered to be applicable to the majority of the population.

7.2.1 No change to AECOM (2016) HHRA Report Low and Acceptable Risk Outcomes

If the FSANZ TDI were adopted there would be no change to the AECOM (2016) HHRA Report outcome that there is a low and acceptable risk to residents (including recreational and commercial fishers and beef farmers), non-resident commercial fishers, non-resident council workers and visitors from exposure to PFAS impact through the following exposure pathways:

Off-Site Stage 2B Investigation Area (excluding the Southern Area)

inhalation of dust (from soil irrigated by PFAS impacted groundwater or flooded by PFAS impacted surface water)

incidental ingestion of groundwater or surface water as a result of indoor use (excluding drinking water), outdoor use (including swimming pools, dams and surface water bodies) and irrigation

dermal contact with groundwater or surface water as a result of indoor use, outdoor use (including swimming pools, dams and surface water bodies) and irrigation

incidental ingestion of soil or sediment as a result of outdoor activities

dermal contact with soil or sediment as a result of outdoor activities

consumption of locally sourced seafood (including finfish, prawns, crabs and oysters)

consumption of locally grown fruit and vegetables

consumption of beef from locally grown cattle and exposed to surface water as their primary drinking water supply

consumption of eggs from locally grown backyard chickens that are exposed to groundwater as their primary drinking water supply

consumption of milk from locally grown dairy cows that are exposed to surface water as their primary drinking water supply.

Southern Area




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consumption of locally sourced seafood (including finfish, prawns, crabs and oysters)



7.2.2 No change to AECOM (2016) HHRA Report Elevated Risk Outcomes

If the FSANZ TDI were adopted there would be no change to the AECOM (2016) HHRA Report outcome that there is a potential for elevated risk to residents (including recreational and commercial fishers) from exposure to PFAS impact through the following exposure pathways:

Southern Area

ingestion of groundwater

7.2.3 Changes to AECOM (2016) HHRA Report Risk Outcomes

If the FSANZ TDI were adopted, there would be a change to the outcomes of the AECOM (2016) HHRA Report to indicate a potential for an elevated risk to residents (including recreational and commercial fishers and beef farmers) and visitors from exposure to PFAS impact through the following exposure pathways:



Southern Area

incidental ingestion of groundwater as a result of indoor use and outdoor use, specifically:

- showering and bathing using extracted groundwater

- filling swimming pools and children’s wading pools with extracted groundwater

- sprinkler play with extracted groundwater.

consumption of beef from locally grown cattle and exposed to surface water as their primary drinking water supply.

7.3 Upper exposure scenarios

As described by Section 4, the upper range exposure scenarios were based on reasonable maximum exposure parameters intended to be representative of human receptors who undertake activities at a higher frequency or ingest more than the average person. As such, they are considered applicable to only a small percentage of the population.

7.3.1 No Change to AECOM (2016) HHRA Report Low and Acceptable Risk Outcome

If the FSANZ TDI were adopted there would be no change the AECOM (2016) HHRA Report outcome that there is a low and acceptable risk to residents (including recreational and commercial fishers and beef farmers), non-resident commercial fishers, non-resident council workers and visitors from exposure to PFAS impact through the following exposure pathways:






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dermal contact with soil or sediment as a result of outdoor activities.

Southern Area





7.3.2 No change to AECOM (2016) HHRA Report Elevated Risk Outcomes

If the FSANZ TDI were adopted, there would be no change to the AECOM (2016) HHRA Report conclusion that there is a potential for elevated risk to residents (including recreational and commercial fishers) from exposure to PFAS impact through the following exposure pathways:



consumption of eggs from locally grown backyard chicken that are exposed to groundwater as their primary drinking water supply


Southern Area


incidental ingestion of groundwater as a result of indoor use, outdoor use and irrigation, specifically:



- sprinkler play with extracted groundwater.


consumption of eggs from locally grown backyard chicken that are exposed to groundwater as their primary drinking water supply


7.3.3 Changes to AECOM (2016) HHRA Report Risk Outcomes

If the FSANZ TDI were adopted, there would be a change to the outcomes of the AECOM (2016) HHRA Report to indicate a potential for an elevated risk to residents (including recreational and commercial fishers and beef farmers) and visitors from exposure to PFAS impact through the following exposure pathways:


incidental ingestion of surface water as a result of outdoor use (including swimming pools, dams and surface water bodies)

consumption of locally sourced seafood (i.e. finfish)




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Southern Area


- residues after washing floors with extracted groundwater

- residues after washing companion animals with extracted groundwater.

incidental ingestion of surface water as a result of outdoor use (including swimming pools, dams and surface water bodies)


consumption of locally grown fruit and vegetables.

7.4 Exposure Pathways Potentially Requiring Management

7.4.1 No change to AECOM (2016) HHRA Report Recommendations

Adoption of the FSANZ TDI does not change the AECOM (2016) HHRA Report suggestion that consideration be given to restricting the following activities:


drinking groundwater, particularly where elevated PFAS concentrations have been reported in groundwater

consumption of eggs from backyard chickens that are exposed to surface water or groundwater as their primary source of drinking water

consumption of milk from dairy cows that exposed to surface water as their primary source of drinking water1.

Southern Area

drinking groundwater, particularly where elevated PFAS concentrations have been reported in groundwater

incidental ingestion of groundwater as a result of indoor use, outdoor use and irrigation, specifically:



- sprinkler play with extracted groundwater

incidental ingestion of surface water as a result of swimming in pools, dams and surface water bodies

consumption of beef from cattle exposed to surface water or groundwater as their primary source of drinking water

consumption of eggs from backyard chickens that are exposed to surface water or groundwater as their primary source of drinking water

consumption of milk from dairy cows that exposed to surface water or groundwater as their primary source of drinking water2.

1 It is noted that the consumption of unpasteurised milk from cows is not recommended by the NSW Food Authority. 2 It is noted that the consumption of unpasteurised milk from cows is not recommended by the NSW Food Authority.



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7.4.2 Changes to the AECOM (2016) HHRA Report Recommendations

In addition to the recommendations from the AECOM (2016) HHRA Report, based on the outcomes of this sensitivity assessment, it is suggested that consideration also be given to restricting the following activities:


incidental ingestion of surface water as a result of swimming in pools filled with surface water, dams and surface water bodies


consumption of locally grown fruit and vegetables that are exposed to surface water or groundwater

consumption of beef from cattle exposed to surface water or groundwater as their primary source of drinking water.

Southern Area


- washing floors with extracted groundwater

- washing companion animals with extracted groundwater


consumption of locally grown fruit and vegetables that are exposed to surface water or groundwater (based on the off-Site Stage 2B Investigation Area outcomes).

7.5 Exposure of infants to breast milk

If the FSANZ TDI were adopted:

The risk outcome for the upper exposure scenario for Scenario 13, including PFAS intake from breast milk (averaged over a lifetime exposure) would be consistent with the outcomes for the AECOM (2016) HHRA Report. In particular:

- The calculated HI for the upper exposure scenario for Scenario 1 including PFAS intake from breast milk is greater than the target HI of 1 for both child and adult receptors (refer to Appendix A)

- This risk outcome is consistent with the calculated HI for the upper exposure scenario for Scenario 1 excluding PFAS intake from breast milk.

The risk outcome for the typical exposure scenario for Scenario 1, including PFAS intake from breast milk (averaged over a lifetime exposure) is different from the outcomes for the AECOM (2016) HHRA Report. In particular:

- The calculated HI for the typical exposure scenario for Scenario 1, including PFAS intake from breast milk is greater than the target HI of 1 for both child and adult receptors (refer to Appendix A)

- This risk outcome is consistent with the calculated HI for the typical exposure scenario for Scenario 1 excluding PFAS intake from breast milk (which would also change from the AECOM (2016) HHRA Report if the FSANZ TDI are adopted).

The difference between the HI calculated for Scenario 1 including PFAS intake from breast milk, and the HI calculated for Scenario 1 excluding PFAS intake from breast milk (refer to Appendix A) approaches 1 for: an adult, under the upper exposure scenario; and a child, under the typical exposure scenario.

3 A resident who uses groundwater for drinking, indoor, outdoor and irrigation purposes.



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By way of comparison, the HI for Scenario 24 (which excludes the drinking water pathway) was also calculated both including and excluding PFAS intake from breast milk (refer to Appendix A). The calculated HI for Scenario 2 is significantly less than those calculated for Scenario 1.

It is noted that the enHealth (2016b) Guidance Statements on Perfluorinated Chemicals state that “the significant health benefits of breast feeding are well established and far outweigh any potential health risks to an infant from any PFOS or PFOA transferred through breast milk”. Similar statements have also been made by other international authorities, including the Agency for Toxic Substances and Disease Registry (ATSDR, 2016), State of New Jersey Department of Health (2015) and Massachusetts Department of Environmental Protection (2015). The Queensland Health “Breastfeeding: Best for baby and for Mum” factsheet states that in addition to providing optimal nutrition for infants, breast feeding reduces the risk of infections and diseases such as urinary tract infections, gastrointestinal infections (e.g. diarrhoea), respiratory illnesses (e.g. asthma), some childhood cancers, obesity, diabetes and heart disease later in life.

It is recommended that the assessment of risk from PFAS intake from breast milk requires further discussion with state and national health authorities.

7.6 Summary

A summary of how adoption of the FSANZ TDI would affect the outcomes and recommendations of the AECOM (2016) HHRA Report is presented in Table 2. A breakdown of the HI calculated for each of the individual exposure pathways that make up the scenarios is illustrated in Appendix B.

It is important to note that while this sensitivity assessment has identified additional pathways (relative to those identified by the AECOM (2016) HHRA Report) with potential elevated risk, the EPC on which these calculations are based were typically based on analytical results from an initial sampling event that was targeted to potential areas of greater PFAS impact. Further, a number of the assumptions made regarding exposure frequency and duration or quantity (in the case of dietary intakes) are considered conservative and unlikely to be representative of the majority of the population. Therefore, the resultant HI may over-estimate exposure risk.

Additional environmental investigations are currently being completed in order to assess data gaps identified by the AECOM (2016) HHRA Report (among other things). These investigations include additional groundwater, surface water, sediment, soil and biota sampling. The results of these ongoing investigations will be used by AECOM to refine the CSM, address data gaps identified by the AECOM (2016) HHRA Report and prepare an updated HHRA Report in the second half of 2017.

4 A resident who uses groundwater for indoor, outdoor and irrigation purposes.



17

Table 2 Summary of HHRA Conclusions for Residents based on FSANZ TDI

Exposure Pathway Receptor/Exposed Community

Potential Risk – Off-Site Stage 2B Investigation

Area3

Potential Risk - Southern Area

Suggested precautions if the FSANZ TDI were adopted in the HHRA

Upper6 Typical7 Upper6 Typical7

Groundwater

Ingestion of groundwater Residents1 Elevated Elevated

(previously low

& acceptable)

Elevated4 Elevated4 Continue to not drink groundwater within

the Stage 2B Investigation Area (including

the Southern Area).

Incidental ingestion of groundwater as

a result of indoor use (excluding drinking

water)6, outdoor use (including swimming

pools, dams and surface water bodies)

and irrigation7

Residents1, non-resident

council workers and visitors2

Low &

Acceptable Low &

Acceptable Elevated Elevated

(previously low

& acceptable)

Avoid or minimise the use of groundwater

for: showering and bathing; filling

swimming pools and children’s wading

pools; sprinkler play, washing floors and

washing companion animals5. The

sensitivity of the input parameters adopted

for this exposure pathway is further

discussed in Section 7.7.1.

Dermal contact with groundwater as a

result of indoor use6, outdoor use

(including swimming pools, and dams)

and irrigation7


council workers and visitors2

Low &

Acceptable Low &

Acceptable Low &

Acceptable Low &

Acceptable None Advised

Surface Water

Incidental ingestion of surface water

as a result of outdoor use- (including

swimming pools, dams and surface water

bodies) and irrigation7


commercial fishers, non-

resident council workers and

visitors2

Elevated

(previously low

& acceptable)

Low &

Acceptable Elevated

(previously low

& acceptable)

Low &

Acceptable Avoid or minimise the incidental ingestion

of surface water during swimming in

surface water bodies. The sensitivity of

the input parameters adopted for this

exposure pathway is further discussed in

Section 7.7.2.

5It is noted that the risk estimate for incidental ingestion of groundwater residues after washing floors or companion animals is based on some highly conservative modelling assumptions which are likely to result in an overestimation of potential risk and should be reviewed prior to making any additional recommendations regarding this pathway.



18



Area3




Dermal contact with surface water as a

result of outdoor use (including swimming

pools, dams and surface water bodies)

and irrigation7




visitors2

Low &

Acceptable Low &

Acceptable Low &

Acceptable Low &


Soil and Sediment

Incidental ingestion of soil and

sediment as a result of outdoor activities7




visitors2

Low &

Acceptable Low &

Acceptable Low &

Acceptable Low &


Dermal contact with soil and sediment

as a result of outdoor activities7




visitors2

Low &

Acceptable Low &

Acceptable Low &

Acceptable Low &


Inhalation of Dust as a result of indoor6

and outdoor7 activities (from soil irrigated

by PFAS impacted groundwater or

flooded by PFAS impacted surface water)




visitors2

Low &

Acceptable Low &

Acceptable Low &

Acceptable Low &


Locally sourced food

Consumption of locally sourced

seafood (including finfish, prawns, crabs

and oysters)


commercial fishers

Elevated

(previously low

& acceptable)

Low &

Acceptable Elevated

(previously low

& acceptable)

Low &

Acceptable Avoid or minimise ‘high’ consumption of

locally sourced finfish by a child. The

sensitivity of the input parameters adopted

for this exposure pathway is further

discussed in Section 7.7.3.



19



Area3




Consumption of locally grown fruit and

vegetables

Residents1 Elevated

(previously low

& acceptable)

Low &

Acceptable Elevated

(previously low

& acceptable)

Low &

Acceptable Avoid or minimise consumption of locally

grown fruit and vegetables that are

irrigated with surface water or

groundwater from within the Stage 2B

Investigation Area (including the Southern

Area)6. The sensitivity of the input

parameters adopted for this exposure

pathway is further discussed in Section

7.7.4.

Consumption of honey Residents1 Low &

Acceptable Low &

Acceptable Low &

Acceptable Low &


Consumption of beef from locally grown

cattle and exposed to surface water as

their primary drinking water supply

Residents1 Elevated

(previously low

& acceptable)

Low &

Acceptable

Elevated Elevated

(previously low

& acceptable)

Restrict consumption of beef from locally

grown cattle that are exposed to surface

water (or groundwater within the Southern

Area5) from within the Stage 2B

Investigation Area (including the Southern

Area) as their primary drinking water

source. The sensitivity of the input

parameters adopted for this exposure

pathway is further discussed in Section

7.7.5.

Consumption of eggs from locally grown

backyard chicken that are exposed to

groundwater as their primary drinking

water supply

Residents1 Elevated Low &

Acceptable Elevated4 Elevated4 Restrict consumption of eggs from

backyard chickens exposed to surface

water or drinking water within the Stage

2B Investigation Area

6 It is noted that the risk estimates for the ingestion of fruit and vegetables are based on conservative transfer factors of PFAS from water/soil to plants provided by ToxConsult (2016) which are likely to result in an overestimation of potential risk and should be reviewed prior to making any additional recommendations regarding this pathway.



20



Area3




Consumption of milk from locally grown

dairy cows that are exposed to surface

water as their primary drinking water

supply

Residents1 Elevated Low &

Acceptable Elevated Low &

Acceptable

Restrict consumption of milk from dairy

cows exposed to surface water (or

groundwater5) as their primary drinking

water source

Notes:

1. Residents includes recreational fishers/moderate locally sourced seafood consumers and commercial fishers/high locally sourced seafood consumers

2. Visitors were not assessed in the Southern Area

3. Stage 2B Investigation Area excludes the Site and the Southern Area

4. Risk estimates were not calculated for the consumption of eggs exposure pathway within the Southern Area. The conclusions presented in Table 2 for the Southern Area were based on

the assumption that as an elevated risk was reported for the Stage 2B Investigation Area (upper exposure scenario) where PFAS concentrations in groundwater are lower, then an elevated

risk would also exist where PFAS concentrations in groundwater are higher i.e. the Southern Area.

5. Risk estimates for consumption of beef and milk were assessed based on the assumption that the cattle were exposed to surface water as their primary source of drinking water. However,

the groundwater concentrations reported in the Southern Area are greater than those reported in the surface water. Therefore, if the risk estimate was based on the groundwater

concentrations, the risk estimates for consumption of beef and milk would also be elevated.

6. Indoor activities with groundwater comprise showering/bathing, food preparation and clean-up, domestic laundry, washing clothes, household cleaning and washing floors.

7. Outdoor activities with groundwater or surface water comprise sprinkler play, washing of animals, washing of vehicles, irrigation and swimming in home pools, dams or other surface water

bodies.



21

7.7 Discussion of Key Exposure Pathways

Based on the conclusions presented in Section 7.2 to Section 7.5 and summarised in Table 2, a number of pathways which were previously considered by the AECOM (2016) HHRA Report to represent a low and acceptable risk for all exposure scenarios in both the Stage 2B Investigation Area and Southern Area have been found to present an elevated risk for one or more exposure scenario if the FSANZ TDI is adopted.

These pathways are further described below in terms of the most sensitive inputs which influence the estimated risk.

Appendix B presents a breakdown of the HI calculated for each of the individual exposure pathways that make up the exposure pathways summarised in Table 2. A separate breakdown is provided for:

The Stage 2B Investigation Area (excluding the Southern Area):

- Upper exposure scenario (refer to Section 4)

- Typical exposure scenario (refer to Section 4)

The Southern Area:

- Upper exposure scenario (refer to Section 4)

- Typical exposure scenario (refer to Section 4)

The breakdown is presented in two formats:

1. Tabular form – the calculated HI for each individual pathway for both the child and adult receptor is presented

2. Graphically – the maximum of the calculated HI for either the child or adult receptor is presented for each individual pathway.

7.7.1 Incidental Ingestion of Groundwater within the Southern Area

The incidental ingestion of groundwater pathway within the Southern Area is driven by five key activities including showering and bathing, swimming in pools, sprinkler play, washing floors and washing companion animals. The elevated risks are based on:

typical exposure parameters for adults and children within the Southern Area (not including washing floors and companion animals), and

upper exposure parameters for children within the Southern Area.

The incidental ingestion of groundwater pathways assume that the concentrations of PFAS in impacted groundwater (i.e. the EPC) are equal to:

for the Southern Area, the maximum reported concentrations.

Overall, the elevated frequency (e.g. a child swimming for 42 minutes a day for 130 days a year), ingestion rates (e.g. a child consuming 0.15 litres of water per hour during each swimming event) and EPC (i.e. maximum PFAS concentration reported in groundwater) assumed in this exposure pathways are considered to be conservative and are likely to overestimate the potential risk.

7.7.2 Incidental Ingestion of Surface Water

The incidental ingestion of surface water pathway is based on adults and children swimming in PFAS impacted land based creeks/drains. The elevated risks are based on upper exposure parameters within both the Stage 2B investigation Area and Southern Area.

Conservative estimates have been adopted for exposure duration which are equivalent to (for the upper exposure assumptions):

a child swimming in a PFAS impacted land based creek or drain for approximately 1 hour per day, twice per week, each year and

an adult for 1.5 hours per day, approximately three times per week, each year.



22

The EPC for incidental ingestion of surface water assume that the concentrations of PFAS in impacted surface water are always equal to the 95th percentile concentration measured across all land based drains/creeks.

Both the frequency and concentration assumed in this exposure pathway are considered to be conservative and are likely to overestimate the potential risk. In particular, the assumption that the concentration deemed representative of 95th percentile in surface water, would be continuously present in the same water body that the receptor would be swimming in over the course of a year is unlikely to be realised due to the fact that: the surface water concentrations are highly variable; and not all measured concentrations are from locations that are suitable for swimming (e.g. a drain adjacent to a busy road).

7.7.3 Consumption of Locally Sourced Seafood

The elevated risk associated with the consumption of locally sourced seafood (i.e. finfish) is based on a child receptor who has a high consumption rate of seafood (i.e. upper exposure parameters).

In particular, it is assumed that all of the fish in the child’s diet is from PFAS impacted water and that all of this fish contains PFAS concentrations that are equal to the median concentration calculated for all samples analysed from the area. The rate of ingestion is also assumed to be equal to 220 g/day, for 365 days a year, which, for a child, is considered to be a very high, and unlikely to be realised.

7.7.4 Consumption of Locally Grown Fruit and Vegetables

The elevated risk associated with the consumption of locally grown fruit and vegetables is based on a child receptor who has a high consumption rate (i.e. upper exposure parameters).

In particular, it assumes that the fruit and vegetables are watered by surface water and uses literature values to estimate uptake to the edible portion of the plant (as only limited empirical data was collected). It also assumed that the child consumes approximately 250 g/ day of home grown fruit and vegetables for 365 days of the year and that all of this fruit and vegetable contains this calculated PFAS concentrations.

Both the literature values and the ingestion rate are considered likely to overestimate the risk and could be revisited with further supporting data.

It is noted that PFAS concentrations in all fruit and vegetable samples analysed as part of the Stage 2A Environmental Investigation were reported to be below the laboratory limit of reporting.

7.7.5 Consumption of Locally Grown Beef

The consumption of beef from cattle exposed to groundwater as their primary source of drinking water is based both an adult cattle farmer and their child who are considered ‘high’ consumers (i.e. upper exposure parameters).

Similar to the fruit and vegetables, literature values were used to estimate PFAS concentration in the meat as no empirical data was collected. It is assumed that an adult consumes 124.2 g/day and a child consumes 59 g/day of meat per day for 365 days of the year and that all meat consumed contains the calculated PFAS concentrations.

These parameters are considered conservative and could be revisited with further supporting data.



23

8.0 References AECOM, 2016. Off-Site Human Health Risk Assessment – July 2016, RAAF Base Williamtown Stage 2B Environmental Investigation.

enHealth, 2016b. enHealth Statement: Interim national guidance on human health reference values for per- and poly-fluoroalkyl substances for use in site investigations in Australia

Food Standards Australia New Zealand (FSANZ) Hazard assessment report – Perfluorooctane sulfonate (PFOS), Perfluorooctanic Acid (PFOA), Perfluorohexane sulfonate (PFHxS)

Klaunig, J. E., Shinohara, M., Iwai, H., Chengelis, C. P., Kirkpatrick, J. B., Wang, Z. and Bruner, R. H., 2015. Evaluation of the chronic toxicity and carcinogenicity of perfluorohexanoic acid (PFHxA) in Sprague-Dawley rats. Toxicologic Pathology. 43: 209-220.

Lau, C., Thibodeaux, J. R., Hanson, R. G., Narotsky, M. G., Rogers, J. M., Lindstrom, A. B. and Strynar, M. J., 2006. Effects of perfluorooctanoic acid exposure during pregnancy in the mouse. Toxicological Sciences. 90: 510-518.

Luebker, D.J., K.J. Hansen, N.M. Bass, J.L. Butenhoff, and A.M. Seacat. 2002. Interactions of fluorochemicals with rat liver fatty acid-binding protein. Toxicology 176: 175–185.

ToxConsult, 2016. Toxicity profiles for the perfluorinated compounds PFHxS and PFHxA. Prepared for AECOM Australia Pty Ltd. ToxConsult document ToxCR290316-Td3. 25th May 2016.


31-Mar-2017 Prepared for – Department of Defence – ABN: 68 706 814 312

Appendix A

Hazard Indices

Calculated HI for residents and recreational fishers (Scenario 1 to Scenario 6) – Off-Site Stage 2B Investigation Area (excluding the Southern Area)

Adult Child Adult Child Adult Child Adult Child Adult Child Adult Child Adult Child Adult ChildGroundwater Use at ResidencesScenario 1 – A resident or recreational fisher who uses groundwater fordrinking, indoor, outdoor and irrigation purposes.

1.09 1.68 1.1 1.69 8.53 13.20 8.62 13.20 0.15 0.17 0.15 0.17 1.14 1.32 1.15 1.33

Scenario 2 – A resident or recreational fisher who uses groundwater for indoor,outdoor and irrigation purposes.

0.17 0.57 0.18 0.58 1.34 4.52 1.43 4.60 0.02 0.05 0.02 0.05 0.18 0.43 0.18 0.43

Scenario 3 – A resident or recreational fisher who uses groundwater foroutdoor and irrigation purposes.

0.16 0.52 0.17 0.53 1.26 4.12 1.35 4.20 0.02 0.05 0.02 0.05 0.18 0.41 0.18 0.42

Scenario 4 – A resident or recreational fisher who uses groundwater for indoorpurposes.

0.01 0.06 0.02 0.07 0.10 0.44 0.20 0.52 0.001 0.003 0.002 0.004 0.009 0.02 0.01 0.03

Scenario 5 – A resident or recreational fisher who uses groundwater foroutdoor purposes.

0.03 0.07 0.05 0.08 0.26 0.57 0.35 0.65 0.001 0.003 0.002 0.004 0.01 0.03 0.01 0.03

Groundwater and Surface Water Use at Residences

Scenario 6 – A resident or recreational fisher who uses surface water foroutdoor and irrigation purposes (livestock only), swims in surface water bodies ontheir properties (i.e. dams and creeks).

0.1 0.24 0.11 0.25 0.78 1.87 0.87 1.95 0.003 0.01 0.002 0.004 0.02 0.04 0.02 0.03

Notes1. Refer to Section 5.2.6 of AECOM (2016) HHRA Report for a more detailed description of each scenario.2. Refer to Section 5.2.3.1 of AECOM (2016) HHRA Report for a more detailed description of each receptor.3. Bold values denote an exceedance of the target HI of 14. Green Bold values denote an exceedance of the target HI of 1 and a change in risk outcome from the AECOM (2016) HHRA Report.

Summary of HI for other receptors (Scenario 7 to Scenario 12) – Off-Site Stage 2B Investigation Area (excluding Southern Area)

Calculated HI Calculated HI Calculated HI Calculated HI Calculated HI Calculated HI Calculated HI Calculated HIAdult Child Adult Child Adult Child Adult Child

Scenario 7 – A resident who does not eat seafood and uses groundwater forindoor, outdoor and irrigation purposes and swims in surface water bodies on theirproperties (i.e. dams and creeks).

0.25 0.77 1.93 6.09 0.02 0.05 0.18 0.42

Scenario 8 – A commercial fisher/high locally caught seafood consumer whouses groundwater for indoor, outdoor and irrigation purposes and fishescommercially.

0.17 0.36 1.33 2.82 0.03 0.04 0.23 0.32

Scenario 9 – A commercial fisher/high locally caught seafood consumer whofishes commercially who lives outdoor the Stage 2B Investigation Area.

0.13 0.24 1.02 1.91 0.03 0.04 0.23 0.30

Scenario 10 – A visitor who recreationally boats and swims in Fullerton Cove andTilligerry Creek.

0.06 0.15 0.44 1.18 0.001 0.001 0.006 0.009

Scenario 11 – An Council worker who works along service pits or in surfacewater bodies (i.e. drains).

0.03 NA 0.24 NA 0.002 NA 0.01 NA

Scenario 12 – a beef farmer/high local grown beef consumer who usesgroundwater for indoor uses, outdoor uses and irrigation

0.27 0.62 2.14 4.92 0.02 0.05 0.16 0.38

Notes1. Refer to Section 5.2.6 of AECOM (2016) HHRA Report for a more detailed description of each scenario.2. NA - not assessed3. Green Bold values denote an exceedance of the target HI of 1 and a change in risk outcome from the AECOM (2016) HHRA Report.

Scenario 7 to Scenario 121

enHealth 2016 (AECOM, 2016)

enHealth 2016(AECOM, 2016)


Calculated HI2 – Calculated HI2 –

Resident/low locally caughtseafood consumers (X.1)

Recreational Fisher/moderatelocally caught seafood consumers

(X.2)

Upper Exposure Scenario (a)

FSANZ

Upper Exposure Scenario (a) Typical Exposure Scenario (b)enHealth 2016 (AECOM, 2016) FSANZ

Calculated HI2 – Calculated HI2 – Calculated HI2 – Calculated HI2 –FSANZ

Calculated HI2 – Calculated HI2 –


(X.2)

enHealth 2016(AECOM, 2016) FSANZ

Typical Exposure Scenario (b)



(X.2)



(X.2)


Calculated HI for residents and recreational fishers (Scenario 1 to Scenario 6) – Southern Area

Adult Child Adult Child Adult Child Adult Child Adult Child Adult Child Adult Child Adult Child

Scenario 1 – A resident or recreational fisher who uses groundwater fordrinking, indoor, outdoor and irrigation purposes.

NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA

Scenario 23 – A resident or recreational fisher who uses groundwater forindoor, outdoor and irrigation purposes.

1.72 5.07 1.73 5.08 13.61 40.21 13.70 40.28 0.12 0.52 0.18 0.52 0.93 4.13 0.94 4.14

Scenario 33 – A resident or recreational fisher who uses groundwater foroutdoor and irrigation purposes.

1.3 2.9 1.31 2.91 10.29 23.03 10.38 23.11 0.08 0.28 0.08 0.28 0.63 2.21 0.63 2.22

Scenario 4 – A resident or recreational fisher who uses groundwater for indoorpurposes.

0.42 2.17 0.43 2.18 3.35 17.22 3.44 17.30 0.04 0.24 0.04 0.24 0.31 1.93 0.32 1.94

Scenario 5 – A resident or recreational fisher who uses groundwater foroutdoor purposes.

1.28 2.86 1.29 2.87 10.15 22.71 10.24 22.78 0.08 0.27 0.08 0.27 0.61 2.17 0.61 2.18

Scenario 6 – A resident or recreational fisher who uses groundwater foroutdoor and irrigation purposes (livestock only), swims in surface water bodies ontheir properties (i.e. dams and creeks).

0.11 0.26 0.12 0.27 0.84 2.06 0.93 2.14 NA NA NA NA NA NA5 NA NA5

Notes1. Refer to Section 5.2.6 of AECOM (2016) HHRA Report for a more detailed description of each Scenario.2. Bold - values in bold denote an exceedance of the adopted HI3. Scenario 2 and 3 do not include the ingestion of eggs from backyard chickens.4. NA - Not Assessed

6. Green Bold values denote an exceedance of the target HI of 1 and a change in risk outcome from the AECOM (2016) HHRA Report.

Summary of HI for other receptors (Scenarios 7, 8, 11 and 12) – Southern Area

Calculated HI Calculated HI Calculated HI Calculated HI Calculated HI Calculated HI Calculated HI Calculated HIAdult Child Adult Child Adult Child Adult Child

Scenario 74 – A resident who does not eat seafood and uses groundwater forindoor, outdoor and irrigation purposes and swims in surface water bodies on theirproperties (i.e. dams and creeks).

1.8 5.3 14.21 41.77 0.12 0.52 0.93 4.13

Scenario 8 – A commercial fisher /high locally caught seafood consumer whouses groundwater for indoor, outdoor and irrigation purposes and fishescommercially.

1.82 5.26 14.47 41.74 0.14 0.55 1.14 4.37

Scenario 11 – A Council worker who works along service pits or in surface waterbodies (i.e. drains).

0.034 NA 0.26 NA NA NA NA NA

Scenario 12 – a beef farmer /high local grown beef consumer who usesgroundwater for indoor uses, outdoor uses and irrigation.

2.08 5.86 16.50 46.55 0.16 0.61 1.24 4.84

Notes1. Refer to Section 5.2.6 of AECOM (2016) HHRA Report for a more detailed description of each scenario.2. Bold – values in bold denote an exceedance of the target HI of 13. NA – Not Assessed4. Scenario 7 does not include the ingestion of eggs from backyard chickens5. Green Bold values denote an exceedance of the target HI of 1 and a change in risk outcome from the AECOM (2016) HHRA Report.

Summary of HI for Scenario 1.2 and Scenario 2.2 – Including Intake from Breast Milk

Including PFASintake frombreast milk

Excluding PFASintake frombreast milk











(0 to 35 years) (>6 to 35 years)3 (0 to 6 years) (0 to 6 years) 3 (0 to 35 years) (>6 to 35 years)3 (0 to 6 years) (0 to 6 years) 3 (0 to 35 years) (>6 to 35 years)3 (0 to 6 years) (0 to 6 years) 3

Scenario 1.2a – Upper 1.2 1.1 1.64 1.69 9.35 8.62 12.88 13.20 2.04 1.43 4.97 4.60Scenario 1.2b - Typical 0.16 0.15 0.25 0.17 1.29 1.15 1.98 1.33 0.35 0.18 1.15 0.43Notes

1. Refer to Section 5.2.6 of AECOM (2016) HHRA Report for a more detailed description of each scenario.2. Bold denotes an exceedance of the target HI.3. Refer to tables above for Scenario 1.2a, Scenario 1.2b, Scenario 2.2a and Scenario 2.2b risk calculations.4. Green Bold values denote an exceedance of the target HI of 1 and a change in risk outcome from the AECOM (2016) HHRA Report.

Upper Exposure Scenario (a) Typical Exposure Scenario (b)enHealth 2016 (AECOM, 2016) FSANZ

Calculated HI2 – Calculated HI2 – Calculated HI2 – Calculated HI2 –enHealth 2016 (AECOM, 2016) FSANZ

Calculated HI2 – Calculated HI2 –Calculated HI2 – Calculated HI2 –



(X.2)



(X.2)


Groundwater and Surface Water Use at Residences



(X.2)Scenario 1 to Scenario 61 Resident/low locally caught

seafood consumers (X.1)


(X.2)

Groundwater Use at Residences

Upper Exposure Scenario (a) Typical Exposure Scenario (b)


5. Where the enHealth (2016) TDIs were adopted, there was a low and acceptable risk under an upper exposure scenario and therefore a typical exposure scenario. However, where the FSANZ TDIs were adopted, there was a potential risk for a child resident under an upper exposure scenario. Given the change in risk profile, additional modelling would be required to assess a typicalexposure scenario using the US EPA TDIs.

Scenario1

Calculated HIAdult Child

enHealth 2016 (AECOM, 2016)


FSANZCalculated HI (inc drinking water)

Adult Child

FSANZCalculated HI (exc drinking water)

Adult Child



Appendix B

Hazard Indices for eachExposure Pathway

Appendix B – Hazard indices for each exposure pathway

1.0 Stage 2B Investigation Area – Upper Exposure Scenario

Pathways Hazard Indexfor an adult

Hazard Indexfor a child

Direct contact and inhalation of soil/dust 0.000 0.003Direct contact and inhalation of soil/dust during maintenance work (adultonly) 0.002 -

Direct contact with sediment and surface water during recreational fishing 0.059 0.017Direct contact with sediment and surface water during commercial fishing(adult only)

0.461 -

Direct contact with sediment and surface water during swimming (landbased)

0.622 1.604

Direct contact with sediment and surface water during swimming (marinebased) 0.410 1.100

Direct contact with sediment and surface water during maintenance work(land based) (adult only) 0.235 -

Direct contact with surface water during recreational boating 0.025 0.120

Direct contact with surface water during irrigation 0.044 0.023

Ingestion of groundwater 7.200 8.600

Direct contact with groundwater during showering/bathing 0.064 0.360Direct contact with groundwater during food preparation and cleanup(adult only) 0.008 -

Direct contact with groundwater during domestic laundry (adult only) 0.003 -

Direct contact with groundwater residues after washing clothes 0.000 0.001

Direct contact with groundwater during household cleaning 0.001 0.005

Direct contact with groundwater residues after washing floors (child only) - 0.032

Direct contact with groundwater during sprinkler play 0.027 0.140

Direct contact with groundwater during washing of animals 0.010 0.003

Direct contact with groundwater during washing of vehicles (adult only) 0.002 -

Direct contact with groundwater during irrigation 0.011 0.006Direct contact with groundwater residues after washing companionanimals 0.025 0.014

Direct contact with groundwater used in home swimming pools 0.160 0.360

Ingestion of finfish (low consumption rate) 0.017 0.040

Ingestion of crustaceans and oysters (low consumption rate) 0.008 0.005

Ingestion of finfish (moderate consumption rate) 0.040 0.093

Ingestion of crustaceans and oysters (moderate consumption rate) 0.020 0.011

Ingestion of finfish (high consumption rate) 0.440 1.800

Ingestion of crustaceans and oysters (high consumption rate) 0.120 0.130

Ingestion of home grown beef (moderate consumption rate) 0.082 0.190

Ingestion of home grown beef (high consumption rate) 1.800 4.000

Ingestion of home grown eggs 0.920 3.400

Ingestion of home grown fruit/vegetables (calculated) 0.460 1.100

Ingestion of home grown milk (calculated) 0.610 7.100

Notes:

1. Change means that the outcome of this sensitivity assessment is the same as the AECOM (2016) HHRA Report with respect to whether, or not, the exposure pathway was identified to represent an elevated risk or a low and acceptable risk. Whereare change is not specified, the outcome of this sensitivity assessment is the same as the AECOM (2016) HHRA Report with respect to whether, or not, the exposure pathway was identified to represent an elevated risk or a low and acceptable risk.

2. Given that it is likely human receptors will be exposed to PFAS via multiple pathways (requiring the addition of the calculated HI from each individual exposure pathway to calculate the cumulative HI), any individual pathway with a calculated HI ofgreater than 0.5 is considered to be representative of a potential risk driving pathway (i.e. elevated risk).

3. Available surface water data were categorised as ‘land based’ or ‘marine based’ according to sampling locations and the most likely potential receptor. That is, a decision was made with regards to the potential for the surface water represented bythe given result to come into contact with a land based receptor (e.g. residents) or a marine based receptor (e.g. fishermen).

2.0 Stage 2B Investigation Area – Typical Exposure Scenario



Direct contact and inhalation of soil/dust 0.000 0.001Direct contact and inhalation of soil/dust during maintenance work (adultonly)

0.000 -

Direct contact with sediment and surface water during recreational fishing(marine based) 0.001 0.000

Direct contact with sediment and surface water during commercial fishing(marine based) (adult only)

0.057 -


0.007 0.008


Direct contact with sediment and surface water during maintenance work(land based) (adult only)

0.013 -

Direct contact with surface water during recreational boating (marinebased)

0.001 0.002

Direct contact with surface water during irrigation (land based) 0.002 0.001Ingestion of groundwater 0.962 0.898Direct contact with groundwater during showering/bathing 0.001 0.009Direct contact with groundwater during food preparation and cleanup(adult only) 0.001 -

Direct contact with groundwater during domestic laundry (adult only) 0.000 -Direct contact with groundwater residues after washing clothes 0.000 0.000Direct contact with groundwater during household cleaning 0.000 0.000Direct contact with groundwater residues after washing floors (child only) - 0.001Direct contact with groundwater during sprinkler play 0.000 0.004Direct contact with groundwater during washing of animals 0.000 0.000Direct contact with groundwater during washing of vehicles (adult only) 0.000 -Direct contact with groundwater during irrigation 0.000 0.000Direct contact with groundwater residues after washing companionanimals 0.002 0.001

Direct contact with groundwater used in home swimming pools 0.001 0.007Ingestion of finfish (low consumption rate) 0.006 0.013Ingestion of crustaceans and oysters (low consumption rate) 0.001 0.000Ingestion of finfish (moderate consumption rate) 0.009 0.020Ingestion of crustaceans and oysters (moderate consumption rate) 0.002 0.000Ingestion of finfish (high consumption rate) 0.113 0.265Ingestion of crustaceans and oysters (high consumption rate) 0.056 0.030Ingestion of home grown beef (moderate consumption rate) 0.008 0.018Ingestion of home grown beef (high consumption rate) 0.151 0.353Ingestion of home grown eggs 0.160 0.372Direct contact and inhalation of soil/dust 0.000 0.001Direct contact and inhalation of soil/dust during maintenance work (adultonly)

0.000 -

Notes:




3.0 Southern Area – Upper Exposure Scenario



Direct contact and inhalation of soil/dust 0.008 0.060Direct contact and inhalation of soil/dust during maintenance work (adultonly)

0.028 -

Direct contact with sediment and surface water during recreational fishing(marine based) 0.059 0.018

Direct contact with sediment and surface water during commercial fishing(marine based) (adult only)

0.463 -


0.622 1.610


Direct contact with sediment and surface water during maintenance work(land based) (adult only)

0.236 -

Direct contact with surface water during recreational boating (marinebased)

0.000 0.000

Direct contact with surface water during irrigation (land based) 0.044 0.023Direct contact with groundwater during showering/bathing 2.781 15.571Direct contact with groundwater during food preparation and cleanup(adult only) 0.356 -

Direct contact with groundwater during domestic laundry (adult only) 0.134 -Direct contact with groundwater residues after washing clothes 0.003 0.023Direct contact with groundwater during household cleaning 0.046 0.217Direct contact with groundwater residues after washing floors (child only) - 1.364Direct contact with groundwater during sprinkler play 1.189 6.177Direct contact with groundwater during washing of animals 0.419 0.108Direct contact with groundwater during washing of vehicles (adult only) 0.070 -Direct contact with groundwater during irrigation 0.490 0.254Direct contact with groundwater residues after washing companionanimals 1.092 0.620

Direct contact with groundwater used in home swimming pools 6.857 15.443Ingestion of finfish (low consumption rate) 0.017 0.040Ingestion of crustaceans and oysters (low consumption rate) 0.008 0.005Ingestion of finfish (moderate consumption rate) 0.040 0.093Ingestion of crustaceans and oysters (moderate consumption rate) 0.020 0.011Ingestion of finfish (high consumption rate) 0.440 1.800Ingestion of crustaceans and oysters (high consumption rate) 0.120 0.130Ingestion of home grown beef (moderate consumption rate) 0.138 0.326Ingestion of home grown beef (high consumption rate) 3.009 6.694Direct contact and inhalation of soil/dust 0.008 0.060Direct contact and inhalation of soil/dust during maintenance work (adultonly)

0.028 -

Direct contact with sediment and surface water during recreational fishing(marine based)

0.059 0.018

Direct contact with sediment and surface water during commercial fishing(marine based) (adult only) 0.463 -

Notes:




4. Risk estimates were not calculated for the ingestion of groundwater or ingestion of home grown fruit and vegetables from within the Southern Area. This is because the risk from ingestion of groundwater and ingestion of fruit and vegetables fromwithin the Stage 2B Investigation Area, where PFAS concentrations in groundwater were reported to be lower than within the Southern Area, were considered to be elevated. Therefore, it follows that the risk from ingestion of groundwater andingestion of fruit and vegetables from within the Southern Area would also be elevated.

4.0 Southern Area – Typical Exposure Scenario



Direct contact and inhalation of soil/dust 0.004 0.018Direct contact with sediment and surface water during recreational fishing(marine based)

0.001 0.000


Direct contact with groundwater during showering/bathing 0.178 1.661Direct contact with groundwater during food preparation and cleanup(adult only)

0.107 -

Direct contact with groundwater during domestic laundry (adult only) 0.011 -Direct contact with groundwater residues after washing clothes 0.003 0.009Direct contact with groundwater during household cleaning 0.007 0.033Direct contact with groundwater residues after washing floors (child only) - 0.217Direct contact with groundwater during sprinkler play 0.040 0.660Direct contact with groundwater during washing of animals 0.014 0.011Direct contact with groundwater during washing of vehicles (adult only) 0.007 -Direct contact with groundwater during irrigation 0.056 0.029Direct contact with groundwater residues after washing companionanimals

0.324 0.121

Direct contact with groundwater used in home swimming pools 0.159 1.320Ingestion of finfish (low consumption rate) 0.006 0.013Ingestion of crustaceans and oysters (low consumption rate) 0.001 0.000Ingestion of finfish (moderate consumption rate) 0.009 0.020Ingestion of crustaceans and oysters (moderate consumption rate) 0.002 0.000Ingestion of finfish (high consumption rate) 0.113 0.265Ingestion of crustaceans and oysters (high consumption rate) 0.056 0.030Ingestion of home grown beef (moderate consumption rate) 0.016 0.038Ingestion of home grown beef (high consumption rate) 0.323 0.755Direct contact and inhalation of soil/dust 0.004 0.018Direct contact with sediment and surface water during recreational fishing(marine based)

0.001 0.000


Direct contact with groundwater during showering/bathing 0.178 1.661Direct contact with groundwater during food preparation and cleanup(adult only)

0.107 -

Direct contact with groundwater during domestic laundry (adult only) 0.011 -Direct contact with groundwater residues after washing clothes 0.003 0.009Direct contact with groundwater during household cleaning 0.007 0.033Direct contact with groundwater residues after washing floors (child only) - 0.217Direct contact with groundwater during sprinkler play 0.040 0.660

Notes:




4. Risk estimates were not calculated for the ingestion of groundwater or ingestion of home grown fruit and vegetables from within the Southern Area. This is because the risk from ingestion of groundwater and ingestion of fruit and vegetables fromwithin the Stage 2B Investigation Area, where PFAS concentrations in groundwater were reported to be lower than within the Southern Area, were considered to be elevated. Therefore, it follows that the risk from ingestion of groundwater andingestion of fruit and vegetables from within the Southern Area would also be elevated



Appendix C

HHRA Calculations

Sensitivity Assessment of Outcomes to Food Standards Australia New Zealand Draft Toxicity Reference Values

AECOM

07-Jun-2016 Prepared for – Department of Defence – ABN: N/A

Adopted Toxicity Values and Exposure Parameters

Physical, Chemical and Toxicity Parameters Client Name: Department of DefenceProject Name: Sensitivity TRV Assessment

Project No: 60527153

Chemical CAS NumberMolecular

Weight IARC Classification Oral CSF PAH TEF (Oral) IUR PAH TEF (Inhal) Oral TRVBackground

Intakes

g/mol (mg/kg/day)-1 source unitless source (ug/m3)-1 source unitless source mg/kg/day source mg/kg/day source

Perfluorooctane Sulfonate (PFOS) 1763-23-1 500.03 Not classified - - - - - - - - 2.00E-05

FSANZ (draft) Hazard assessment report –Perfluorooctane sulfonate (PFOS),

Perfluorooctanic Acid (PFOA),Perfluorohexane sulfonate (PFHxS) 1.40E-06

Thompson et al.2010a, 2010b;

Toms et al. 2014

Perfluorooctanoic Acid (PFOA) 335-67-1 414.07 Not classified - - - - - - - - 1.60E-04


Perfluorooctanic Acid (PFOA),Perfluorohexane sulfonate (PFHxS) 7.80E-07

Thompson et al.2010a, 2010b;

Toms et al. 2014

Perfluorohexane Sulphonate (PFHxS) 355-46-4 400.12 Not classified - - - - - - - - 2.00E-05


Perfluorooctanic Acid (PFOA),Perfluorohexane sulfonate (PFHxS) 0.00E+00 No data

Perfluorohexanoic Acid (PFHxA) 307-24-4 314.05 Not classified - - - - - - - - 1.00E-01 ToxConsult (2016) 0.00E+00 No data



Chemical

Perfluorooctane Sulfonate (PFOS)

Perfluorooctanoic Acid (PFOA)

Perfluorohexane Sulphonate (PFHxS)

Perfluorohexanoic Acid (PFHxA)

Background CorrectedTRV Inhalation TRV Background Exposure (%)

BackgroundCorrected

Inhalation TRV GI Abs Dermal TRV Derm Slope Factor Oral Abs Factor Dermal Abs Factor

mg/kg/day mg/m3 source % source mg/m3 unitless source mg/kg/day source (mg/kg/day)-1 source unitless source unitless source

1.86E-05 7.00E-05 - - 7.00E-05 1.00E+00 Default 1.86E-05 - =CSF/GI Abs 1.00E+00 ATSDR (2015) 5.00E-04 ToxConsult (2016)

1.59E-04 5.60E-04 - - 5.60E-04 1.00E+00 Default 1.59E-04 - =CSF/GI Abs 1.00E+00 ATSDR (2015) 5.00E-04 ToxConsult (2016)

2.00E-05 7.00E-05 - - 7.00E-05 1.00E+00 Default 2.00E-05 - =CSF/GI Abs 1.00E+00ToxConsult

(2016) 5.00E-04 ToxConsult (2016)

1.00E-01 3.50E-01 - - 3.50E-01 1.00E+00 Default 1.00E-01 - =CSF/GI Abs 1.00E+00ToxConsult

(2016) 5.00E-04 ToxConsult (2016)

No inhalation-specifictoxicological data available. Forthe purpose of assessing dust

inhalation intakes, an equivalentInhalation TRV was determinedby converting the Oral TRV by

multiplying by 70kg (body weight)and dividing by 20mg/m3

(inhalation rate).

No dermal-specifictoxicological dataavailable. For the

purpose of assessingdust inhalation intakes,an equivalent Dermal

TRV was determined bymultiplying the Oral

TRV by thegastrointestinal

asbsoprtion rate, inaccordance with the

ASC NEPM 2013



Chemical





Dermal Perm Constant (kp) Soil-Water Partition CoefficientLog of Octanol-Water Partition

CoefficientOrganic Carbon Partition

Coefficient Diffusivity in Air Diffusivity in Water Aqueous Solubility

cm/hr source cm3/g source cm3/g source L/kg (=cm3/g) source cm2/s source cm2/s source unitless source atm-m3/mol source mg/L source

1.00E-06 ToxConsult (2016) - - -

Notavailable/applicable,cannot be measured - No data 2.87E-02 RAIS 3.36E-06 RAIS -

Notavailable/applicable becausedissociated in

theenvironment -

Not available/applicablebecause dissociated in

the environment 5.19E+02 USEPA (2014)

1.00E-06 ToxConsult (2016) - - -

Notavailable/applicable,cannot be measured 1.24E+02

Midpoint of rangereported by ATSDR(2015) i.e.17 - 230 2.26E-02 RAIS 5.79E-06 RAIS -


theenvironment -


the environment 9.50E+03 ATSDR (2015)

1.00E-06 ToxConsult (2016) -

Notavailable/applicable,cannot be measured - No data -


theenvironment -


the environment -Slightly soluble' according to Garcia and Harbison (2015).

1.00E-06 ToxConsult (2016) -

Notavailable/applicable,cannot be measured - No data - No data - No data -

Insoluble'according toGarcia andHarbison(2015).

Henry's Law Constant Henry's Law Constant



Chemical





Vapour PressureVolatile Using

H's Law?

VolatileUsing H's

Law & MW?

VolatileUsing H's

Law & VP?

Human SerumHalf-Life Source Human Volume

of Distribution SourceEmpirical Human

Breast Milk /Serum Ratio

Source Dairy Cow SerumHalf-Life Source

Dairy CowVolume of

DistributionSource Beef Steer Serum

Half-Life Source

mm Hg source Y/N Y/N Y/N days L/kg unitless days L/kg days

2.48E-06 ATSDR (2015) N N N 1752

ToxConsult (2016) -Converted from 4.8

years. 0.23 US EPA 2014 0.01

Kärrman et al.(2007), Kim et al.

(2011c), vonEhrenstein et al.

(2009). 50

Average of VanAsselt et al. (2013)and Vestergren et

al. (2013) 0.26

Average fromMaksiri et al.

(2005), Chaiyabutret al. (2008) 114

Lupton et al.(2014)

1.70E-02 ATSDR (2015) N N N 1496.5

ToxConsult (2016) -Converted from 4.1

years. 0.2 ATSDR 2015 0.05

Kärrman et al.(2007), Kim et al.

(2011c), vonEhrenstein et al.

(2009), Fromme etal. 2010 and

Hauge et al. 2011. 1.3Vestergren et al.

(2013) 0.26


(2005), Chaiyabutret al. (2008) 0.8

Lupton et al.(2011)

- No data N N N 2920

ToxConsult (2016) -Converted from 8

years. 0.23ToxConsult

(2016) 0.013

Average of valuesreported by

Kärrman et al.(2007) and Kim et

al. (2011c). 10 0.26


(2005), Chaiyabutret al. (2008) - -

- No data N N N 32 ToxConsult (2016) 0.75ToxConsult

(2016) - - - - 0.26


(2005), Chaiyabutret al. (2008) - -



Chemical





Beef SteerVolume of

DistributionSource Empirical Cattle

Milk / Serum Ratio SourceEmpirical Cattlemuscle tissue /

Serum RatioSource Sheep Serum Half-

Life Source Sheep Volume ofDistribution Source

Empirical Sheepmuscle tissue /

Serum RatioSource Empirical Sheep

Milk / Serum Ratio Source Transfer Factor intoChicken Eggs Source

L/kg unitless unitless days L/kg unitless unitless unitless

0.21Ross (1988),Payne (1977) 0.019

Average of valuesreported by

Kowalczyk et al.(2013), Vestergrenet al. (2013) andvan Asselt et al.

(2013). 0.1 ToxConsult (2016) - - 0.27

Coghlan et al.(1977), Hix et al.

(1953), Macfarlaneet al. (1959) 0.15

Kowalczyk et al.(2012) 0.05

Kowalczyk et al.(2012) 0.55 Kowalczyk 2014

0.21Ross (1988),Payne (1977) 0.008


Average ofVestergren et al.

(2013) andKowalczyk et al.

(2013). - - 0.27


(1953), Macfarlaneet al. (1959) 0.02


Kowalczyk et al.(2012) 0.15 Kowalczyk 2014

0.21Ross (1988),Payne (1977) 0.01


Kowalczyk et al.(2013) - - 0.27


(1953), Macfarlaneet al. (1959) - - - - - -

- No data. - - - - - - 0.27


(1953), Macfarlaneet al. (1959) - - - - - -



Chemical





Soil-fruitconcentration

factorSource

Water-fruitconcentration

factorSource

Soil-leaf/stemconcentration

factorSource

Water-leaf/stemconcentration

factorSource

mg-chem/kg-plantper mg-chem/kg-

soil

mg-chem/kg-plantper mg-chem/L-

water

mg-chem/kg-plantper mg-chem/kg-

soil

mg-chem/kg-plantper mg-chem/L-

water

0.07

Brignole et al. 2003 -edible parts of

tomato 0.2

Felizeter et al. 2014edible parts of

zuccini 2.2Brignole et al. 2003 -

lettuce 5Felizeter et al. 2014 -

cabbage leaves

0.03

Lechner & Knapp2011 - edible parts of

cucumber 0.3

Felizeter et al. 2014 -edible parts of

zuccini and tomato 6.8Stahl et al. 2009 -

ryegrass 10Felizeter et al. 2014 -

cabbage leaves

- - - - - - - -

- - - - - - - -

Adopted Toxicity Values Client Name: Department of DefenceProject Name: Human Health Risk Assessment


ReferencesATSDR, 2015. Draft toxicological profile for perfluoroalkyls. Agency for Toxic Substances and Disease Registry. August 2015.http://www.atsdr.cdc.gov/ToxProfiles/tp200.pdf.Brignole et al., 2003. Brignole, A. J., Porch, J. R., Krueger, H. O. and van Hoven, R. L. PFOS: A toxicity test to determine the effects of the test substance on seedling emergence of seven species of plants. Wildlife International Ltd. Submitted to 3M Corporation. Environmental Laboratory Project Number U2723, US EPA. AR 226-1369.Chaiyabutr et al., 2008. Chaiyabutr, N., Chanpongsang, S. and Suadsong, S. (2008). Effects of evaporative cooling on the regulation of body water and milk production in crossbred Holstein cattle in a tropical environment. International Journal of Biometeorology. 52: 575-585.Chengelis et al., 2009b. Chengelis, C. P., Kirkpatrick, J. B., Myers, N. R., Shinohara, M., Stetson, P. L. and Sved, D. W. (2009b). Comparison of the toxicokinetic behavior of perfluorohexanoic acid (PFHxA) and nonafluorobutane-1-sulfonic acid (PFBS) in cynomolgus monkeys and rats. Reproductive Toxicology. 27: 400-406.Coghlan et al., 1977. Coghlan, J., Fan, J., Scoggins, B. and Shulkes, A. (1977). Measurement of extracellular fluid volume and blood volume in sheep. Australian Journal of Biological Sciences. 30: 71-84.EFSA, 2008. Perfluorooctane sulfonate (PFOS), perfluorooctanoic acid (PFOA) and their salts. Scientific opinion of the Panel on Contaminants in the Food Chain. European Food Safety Authority. Question No EFSA-Q-2004-163. EFSA Journal 653: 1-131. http://www.efsa.europa.eu/en/efsajournal/doc/653.pdf.Egeghy, 2011. Egeghy, P. P. and Lorber, M. (2011). An assessment of the exposure of Americans to perfluorooctane sulfonate: A comparison of estimated intake with values inferred from NHANES data. J Expos Sci Environ Epidemiol. 21: 150-168.Felizeter et al., 2014. Felizeter, S., McLachlan, M. S. and De Voogt, P. (2014). Root uptake and translocation of perfluorinated alkyl acids by three hydroponically grown crops. Journal of Agricultural and Food Chemistry. 62: 3334-3342.Garcia and Harbison, 2015. Garcia, J. S. and Harbison, R. D. (2015). Perfluoroalkyl Compounds. In: Hamilton & Hardy's Industrial Toxicology. John Wiley & Sons, Inc. 689-718.Hix et al., 1953. Hix, E. L., Evans, L. E. and Underbjerg, G. K. L. (1953). Extracellular water and dehydration in heep. Journal of Animal Science. 12: 459-473.Kärrman et al., 2007. Kärrman, A., Ericson, I., Bavel, B. v., Darnerud, P. O., Aune, M., Glynn, A., Lignell, S. and Lindström, G. (2007). Exposure of perfluorinated chemicals through lactation: levels of matched human milk and serum and a temporal trend, 1996-2004, in Sweden. Environmental Health Perspectives. 115: 226-230.Kim et al., 2011c. Kim, S.-K., Lee, K. T., Kang, C. S., Tao, L., Kannan, K., Kim, K.-R., Kim, C.-K., Lee, J. S., Park, P. S., Yoo, Y. W., Ha, J. Y., Shin, Y.-S. and Lee, J.-H. (2011c). Distribution of perfluorochemicals between sera and milk from the same mothers and implications for prenatal and postnatal exposures. Environmental Pollution. 159: 169-174.Kowalczyk et al., 2012. Kowalczyk, J., Ehlers, S., Fürst, P., Schafft, H. and Lahrssen-Wiederholt, M. (2012). Transfer of perfluorooctanoic acid (PFOA) and perfluorooctane sulfonate (PFOS) from contaminated feed into milk and meat of sheep: pilot study. Archives of Environmental Contamination and Toxicology. 63: 288-298.Kowalczyk et al., 2013. Kowalczyk, J., Ehlers, S., Oberhausen, A., Tuscher, M., Fuerst, P., Schafft, H. and Lahrssen-Wiederholt, M. (2013). Absorption, distribution and milk secretion of the perfluoroalkyl acids PFBS, PFHxS, PFOS, and PFOA by dairy cows fed naturally contaminated feed. Journal of Agricultural and Food Chemistry. 61: 2903-2912.Kowalczyk 2014. Numata, J., Kowalczyk, J., Adolphs, J., Ehlers, S., Schafft, H., Fuerst, P., Müller-Graf, C., Lahrssen-Wiederholt, M. and Greiner, M. (2014). Toxicokinetics of seven perfluoroalkyl sulfonic and carboxylic acids in pigs fed a contaminated diet. Journal of Agricultural and Food Chemistry. 62: 6861-6870.LANUV, 2011. Verbreitung von PFT in der Umwelt. Ursachen - Untersuchungsstrategie - Ergebnisse - Massnahmen. Landesamt fuer Natur, Umwelt, und Verbraucherschutz Nordrhein-Westfalen. Recklinghausen. http://www.lanuv.nrw.de/veroeffentlichungen/fachberichte/fabe34/fabe34.pdf.Lechner & Knapp, 2011. Lechner, M. and Knapp, H. (2011). Carryover of perfluorooctanoic acid (PFOA) and perfluorooctane sulfonate (PFOS) from soil to plant and distribution to the different plant compartments studied in cultures of carrots (Daucus carota ssp. Sativus), potatoes (Solanum tuberosum), and cucumbers (Cucumis Sativus). Journal of Agricultural and Food Chemistry. 59: 11011-11018.Lupton et al., 2011. Lupton, S. J., Huwe, J. K., Smith, D. J., Dearfield, K. L. and Johnston, J. J. (2011). Absorption and Excretion of 14CPerfluorooctanoic Acid (PFOA) in Angus Cattle (Bos taurus). Journal of Agricultural and Food Chemistry. 60: 1128-1134.Lupton et al., 2014. Lupton, S. J., Huwe, J. K., Smith, D. J., Dearfield, K. L. and Johnston, J. J. (2014). Distribution and excretion of perfluorooctane sulfonate (PFOS) in beef cattle (Bos taurus). Journal of Agricultural and Food Chemistry. 62: 1167-1173.Macfarlane et al., 1959. Macfarlane, W., Morris, R., Haward, B. and Budtz-Olsen, O. (1959). Extracellular fluid distribution in tropical merino sheep. Australian Journal of Agricultural Research. 10: 268-286.Maksiri et al., 2005. Maksiri, W., Chanpongsang, S. and Chaiyabutr, N. (2005). Relationship of early lactation and bovine somatotropic to water metabolism and mammary circulation of crossbred Holstein cattle. Asian-Australasian Journal of Animal Science. 18: 1600-1608.Payne, 1977. 2 - Metabolic Disorders Associated with Water In: Metabolic Diseases in Farm Animals. Butterworth-Heinemann. pg. 12-32.RAIS, 2011. Properties: Perfluorooctane Sulfonate (PFOS) and Perfluorooctanoic acid (PFOA). The Risk Assessment Information System (RAIS). https://rais.ornl.gov/cgi-bin/tools/TOX_searchRoss, 1988. Estimating the extracellular water component of total body water in beef cattle using sodium thiosulfate. A thesis in Animal Science. Submitted to the Graduate Faculty of Texas Tech University in partial fulfilment of the requirements for the degree of Master of Science. December 1988.Stahl et al., 2009. Stahl, T., Heyn, J., Thiele, H., Hüther, J., Failing, K., Georgii, S. and Brunn, H. (2009). Carryover of perfluorooctanoic acid (PFOA) and perfluorooctane sulfonate (PFOS) from soil to plants. Archives of Environmental Contamination and Toxicology. 57: 289-298.ToxConsult, 2016. Draft Toxicity profiles for perfluorinated compounds PFOS, PFOS, 6:2FTS and 8:2FTS. Toxicological Consulting Australasia Pty Ltd. 31 May 2016ToxConsult, 2016. Draft Toxicity profiles for perfluorinated compounds PFHxS and PFHxA. Toxicological Consulting Australasia Pty Ltd. 31 May 2016US EPA, 2014. Health effects document for perfluorooctane sulfonate (PFOS). United States Environmental Protection Agency. DRAFT. February 2014. Document Number 822R14002.Van Asselt et al., 2013. Van Asselt, E. D., Kowalczyk, J., van Eijkeren, J. C. H., Zeilmaker, M. J., Ehlers, S., Furst, P., Larhssen-Wiederholt, M. and van der Fels-Klerx, H. J. (2013). Transfer of perfluorooctane sulfonic acid (PFOS) from contaminated feed to dairy milk. Food Chemistry. 141: 1489-1495.Vestergren et al., 2013. Vestergren, R., Orata, F., Berger, U. and Cousins, I. (2013). Bioaccumulation of perfluoroalkyl acids in dairy cows in a naturally contaminated environment. Environmental Science and Pollution Research. 20: 7959-7969.Von Ehrenstein et al., 2009. von Ehrenstein, O. S., Fenton, S. E., Kato, K., Kuklenyik, Z., Calafat, A. M. and Hines, E. P. (2009). Polyfluoroalkyl chemicals in the serum and milk of breastfeeding women. Reproductive Toxicology. 27: 239-245.

Food Standards Australia New Zealand (FSANZ) draft Hazard assessment report – Perfluorooctane sulfonate (PFOS), Perfluorooctanic Acid (PFOA), Perfluorohexane sulfonate (PFHxS)

Klaunig, J. E., Shinohara, M., Iwai, H., Chengelis, C. P., Kirkpatrick, J. B., Wang, Z. and Bruner, R. H., 2015. Evaluation of the chronic toxicity and carcinogenicity of perfluorohexanoic acid (PFHxA) in Sprague-Dawley rats. Toxicologic Pathology. 43: 209-220.

Luebker, D.J., K.J. Hansen, N.M. Bass, J.L. Butenhoff, and A.M. Seacat. 2002. Interactions of fluorochemicals with rat liver fatty acid-binding protein. Toxicology 176: 175–185.


AECOM


Scenario 1 to 5Stage 2B Investigation AreaRisk Estimates

Client Name: Department of DefenceProject Name: Sensitivity TRV Assessment


Scenario 1.1a, 2.1a, 3.1a, 4.1a and 5.1a

Chemicals for QuantitativeAssessment:

Groundwater(mg/L)

Cattle Meat(mg/kg) Egg (mg/kg) Finfish

(mg/kg)

Crustaceansand Oysters

(mg/kg)

Site: RAAF Base Williamtown Perfluorooctane Sulfonate (PFOS) 0.00935 0.0014 modelled modelled 0.00225 0.0022Address: RAAF Base Williamtown, NSW Perfluorooctanoic Acid (PFOA) 0 0.00009 modelled modelled 0.0003Client: Department of Defence Perfluorohexane Sulphonate (PFHxS) 0 0.00136 modelled modelledScenario: Scenario 1.1a, 2.1a, 3.1a, 4.1a and 5.1a Perfluorohexanoic Acid (PFHxA) 0 0.00059 modelled modelled

Enter "x" in box for potentially complete pathwaysSoil Pathways

x Incidental ingestion of soil

x Dermal contact with soil

x Inhalation of surface soil-derived dust in indoor air

x Inhalation of surface soil-derived dust in outdoor air

Inhalation of surface soil-derived vapours in outdoor air

Inhalation of soil-derived vapours from excavation (USEPA 2002 method)

Inhalation of subsurface soil-derived vapours in indoor air

Inhalation of subsurface soil-derived vapours in outdoor air

Incidental ingestion of lead in soil (Adult Lead Model)

Inhalation of lead in soil/dust indoors (Adult Lead Model)

Inhalation of lead in dust outdoors (Adult Lead Model)

Groundwater Pathwaysx Ingestion of potable groundwater

Inhalation of groundwater-derived vapours in indoor air

Inhalation of groundwater-derived vapours in outdoor air

Inhalation of groundwater vapours during irrigation/ showering

Inhalation of vapour emissions from groundwater seepage in an excavation

Inhalation of vapour emissions from groundwater seepage in a basement

Incidental ingestion of groundwater seepage in an excavation

Dermal contact with groundwater seepage in an excavation

x Incidental ingestion of groundwater during showering/bathing

x Dermal contact with groundwater during showering/bathing

x Incidental ingestion of groundwater during food preparation and cleanup

x Dermal contact with groundwater during food preparation and cleanup

x Incidental ingestion of groundwater during domestic laundry

x Dermal contact with groundwater during domestic laundry

x Dermal contact with groundwater residues after washing clothes

x Incidental ingestion of groundwater during household cleaning

x Dermal contact with groundwater during household cleaning

x Incidental ingestion of groundwater residues after washing floors

x Dermal contact with groundwater residues after washing floors

x Incidental ingestion of groundwater during sprinkler play

x Dermal contact with groundwater during sprinkler play

x Incidental ingestion of groundwater during washing of animalsx Dermal contact with groundwater during washing of animalsx Incidental ingestion of groundwater residues after washing animals

x Dermal contact with groundwater residues after washing companion animals

x Incidental ingestion of groundwater during washing of vehicles

x Dermal contact with groundwater during washing of vehicles

x Incidental ingestion of groundwater during irrigation

x Dermal contact with groundwater during irrigation

x Incidental ingestion of groundwater used in home swimming pools

x Dermal contact with groundwater used in home swimming pools

Soil Vapour PathwaysInhalation of soil vapour-derived vapours in indoor air

Inhalation of soil vapour-derived vapours in outdoor air

Sediment PathwaysIncidental ingestion of sediment

Dermal contact with sediment

Surface Water PathwaysIncidental ingestion of surface water during fishing

Dermal contact with surface water during fishing

Incidental ingestion of surface water during boating

Dermal contact with surface water during boating

Incidental ingestion of surface water during swimming in creeks/rivers

Dermal contact with surface water during swimming in creeks/rivers

Dietary Pathwaysx Ingestion of home grown eggs

x Ingestion of finfish

x Ingestion of crustraceans and oysters

x Ingestion of beef

Ingestion of lamb

Ingestion of rabbit

Ingestion of milk from livestock

Ingestion of home grown green vegetables

Ingestion of home grown fruit

General Information:

Soil (mg/kg)

Exposure Point Concentrations

Receptor:Residential (with soil access)Exposure Assumptions:Reasonable Maximum Exposure

Exposure Pathways Assessed:




Calculation of Surface Loading on Floors Following CleaningRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.1a, 2.1a, 3.1a, 4.1a and 5.1a Scenario

Volume of residual water on floorafter cleaning L

Floor Area m2

ChemicalConcentration in

Water (C)

Surfaceloading factor

Surfaceloading on

floor

mg/L L/cm2 mg/cm2

Perfluorooctane Sulfonate (PFOS) 0.0014 1.25E-05 1.75E-08Perfluorooctanoic Acid (PFOA) 0.00009 1.25E-05 1.13E-09Perfluorohexane Sulphonate (PFHxS) 0.00136 1.25E-05 1.70E-08Perfluorohexanoic Acid (PFHxA) 0.00059 1.25E-05 7.38E-09

Chemical

10.0

1.25




Calculation of Concentrations in Cattle Meat (Steer) Based on Environmental ConcentrationsRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.1a, 2.1a, 3.1a, 4.1a and 5.1a Scenario

Exposure Parameter Unit Value Source

Livestock Soil Ingestion Rate (IngRl,s) kg/day 2.42 API (2004)

Livestock Plant Ingestion Rate (IngRl,p) kg/day 13.5 API (2004)

Livestock Water Ingestion Rate (IngRl,w) L/day 100 DPI (2014)

Livestock Body Weight (BW) kg 540 API (2004) and CCME (1999)

Blood serum density L/kg 0.26 ToxConsult (2016)

SoilConcentration

(Cs)

Grazing FloraConcentration

(Cp)

Surface Water Concentration(Cw)1

Chronic DailyIntake byLivestock

(CDIlivestock)

Beef Steer SerumHalf-life (t1/2)

Beef SteerVolume of

Distribution(Vd)

Estimated SteadyState

Concentration inBlood Serum(Cserum/plasma)

Cattle EmpiricalMuscle Tissue /

Serum Ratio(TSR)

Concentration inCattle MuscleTissue (BeefSteer) (Ctissue)

mg/kg mg/kg mg/L mg/kg/day days L/kg mg/L Unitless mg/kg

Perfluorooctane Sulfonate (PFOS) 9.4E-03 4.7E-03 9.2E-04 1.14E+02 2.10E-01 7.20E-01 1.00E-01 1.87E-02Perfluorooctanoic Acid (PFOA) 6.0E-04 1.1E-04 8.00E-01 2.10E-01 6.12E-04 1.00E-01 1.59E-05Perfluorohexane Sulphonate (PFHxS) 6.1E-03 1.1E-03 - - - - -Perfluorohexanoic Acid (PFHxA) 2.1E-03 3.8E-04 - - - - -

Notes:1. Surface water concentrations reported at residential properties.

Chemical




Calculation of Contaminant Concentrations in EggsRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.1a, 2.1a, 3.1a, 4.1a and 5.1a Scenario

Exposure Parameter Unit Value SourceFraction of plant type (i) (grain) grown oncontaminated soil and ingested by theanimal (chicken) (Fi)

Unitless 1Professional judgement. Assumed100% from source area.

Quantity of plant type (i) (grain) eaten by theanimal (chicken) each day (Qpi)

kg DW plant/day 0.07 Hattemer-Frey & Travis (1991)

Quantity of soil eaten by the animal(chicken) (Qs)

kg/day 0.001 Hattemer-Frey & Travis (1991)

Quantity of water consumed by the animal(chicken) (Qw)

L/day 0.61 CCME (1999)

Laying Rate (LR) eggs/day 0.7Professional judgement. Based on achicken laying 5 eggs per week (260days per year).

Average weight of edible portion of egg (Ew) kg 0.058Assumed the average weight of anegg would be 65 g, of which 90%was edible.

Pasture PlantConcentration (Cf)

SoilConcentration

(Cs)Oral Soil Bioavailability Factor

GroundwaterConcentration

(Cw)1

Transfer Factorinto Eggs (TF)

Concentration inEggs (Aegg)

mg/kg mg/kg (unitless) mg/L Unitless mg/kg

Perfluorooctane Sulfonate (PFOS) 0 0.00935 1.00E+00 0.0014 5.50E-01 1.17E-02Perfluorooctanoic Acid (PFOA) 0 0 1.00E+00 0.00009 1.50E-01 2.03E-04Perfluorohexane Sulphonate (PFHxS) 0 0 1.00E+00 0.00136 - -Perfluorohexanoic Acid (PFHxA) 0 0 1.00E+00 0.00059 - -

Chemical




Health Risk Calculations - Incidental Soil IngestionRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.1a, 2.1a, 3.1a, 4.1a and 5.1a Scenario

Oral RfD(BackgroundCorrected)

Adult Intake Factor(threshold)

Adult Intake(threshold)

Hazard Index(Adult)

Child Intake Factor(threshold)

Child Intake(threshold)

Hazard Index(Child)

(mg/kg) (unitless) (mg/kg/day) (kg/kg/day) (mg/kg/day) (unitless) (kg/kg/day) (mg/kg/day) (unitless)

Perfluorooctane Sulfonate (PFOS) 0.00935 1.00E+00 1.86E-05 8.57E-07 8.01E-09 4.31E-04 6.67E-06 6.23E-08 3.35E-03Perfluorooctanoic Acid (PFOA) 1.00E+00 1.59E-04 8.57E-07 6.67E-06Perfluorohexane Sulphonate (PFHxS) 1.00E+00 2.00E-05 8.57E-07 6.67E-06Perfluorohexanoic Acid (PFHxA) 1.00E+00 1.00E-01 8.57E-07 6.67E-06

TOTAL 4.31E-04 3.35E-03

Threshold Intake and Risk CalculationsSoil

ConcentrationChemicalOral Soil Bioavailability

Factor




Health Risk Calculations - Dermal Contact with SoilRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.1a, 2.1a, 3.1a, 4.1a and 5.1a Scenario

Dermal RfD(BackgroundCorrected)

Adult IntakeFactor

(threshold)


Hazard Index(Adult)

Child IntakeFactor

(threshold)


Hazard Index(Child)


Perfluorooctane Sulfonate (PFOS) 0.00935 0.0005 1.86E-05 7.65E-08 7.15E-10 3.85E-05 1.07E-07 9.97E-10 5.36E-05Perfluorooctanoic Acid (PFOA) 0.0005 1.59E-04 7.65E-08 1.07E-07Perfluorohexane Sulphonate (PFHxS) 0.0005 2.00E-05 7.65E-08 1.07E-07Perfluorohexanoic Acid (PFHxA) 0.0005 1.00E-01 7.65E-08 1.07E-07

TOTAL 3.85E-05 5.36E-05


ConcentrationChemical

DermalAbsorption

Factor (DAF)




Health Risk Calculations - Inhalation of Soil-Derived Dust (Particulates) in Indoor AirRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.1a, 2.1a, 3.1a, 4.1a and 5.1a Scenario

Inhalation RfC(BackgroundCorrected)

Adult ExposureFactor (threshold)

Adult ExposureAdjusted Air

Concentration(threshold)

Hazard Index(Adult)

Child ExposureFactor (threshold)

Child ExposureAdjusted Air


Hazard Index(Child)

(mg/kg) (m3/kg) (mg/m3) (kg/m3) (mg/m3) (unitless) (kg/m3) (mg/m3) (unitless)

Perfluorooctane Sulfonate (PFOS) 0.00935 3.85E-08 7.00E-05 6.01E-09 5.62E-11 8.03E-07 6.01E-09 5.62E-11 8.03E-07Perfluorooctanoic Acid (PFOA) 3.85E-08 5.60E-04 6.01E-09 6.01E-09Perfluorohexane Sulphonate (PFHxS) 3.85E-08 7.00E-05 6.01E-09 6.01E-09Perfluorohexanoic Acid (PFHxA) 3.85E-08 3.50E-01 6.01E-09 6.01E-09

TOTAL 8.03E-07 8.03E-07

Threshold Intake and Risk Calculations

SoilConcentrationChemical

ParticulateConcentration inIndoor Air (From

Surface Soil)




Health Risk Calculations - Inhalation of Soil-Derived Dust (Particulates) in Outdoor AirRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.1a, 2.1a, 3.1a, 4.1a and 5.1a Scenario


Adult ExposureFactor

(threshold)



Hazard Index(Adult)




Hazard Index(Child)



TOTAL 2.88E-10 2.88E-10



ParticulateConcentration in

Outdoor Air (FromSurface Soil)




Health Risk Calculations - Ingestion of Potable GroundwaterRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.1a, 2.1a, 3.1a, 4.1a and 5.1a Scenario




Hazard Index(Adult)

Child IntakeFactor (threshold)


Hazard Index(Child)

(mg/L) (mg/kg/day) (L/kg/day) (mg/kg/day) (unitless) (L/kg/day) (mg/kg/day) (unitless)

Perfluorooctane Sulfonate (PFOS) 0.0014 1.86E-05 5.00E-02 7.00E-05 3.76E+00 6.00E-02 8.40E-05 4.52E+00Perfluorooctanoic Acid (PFOA) 0.00009 1.59E-04 5.00E-02 4.50E-06 2.83E-02 6.00E-02 5.40E-06 3.39E-02Perfluorohexane Sulphonate (PFHxS) 0.00136 2.00E-05 5.00E-02 6.80E-05 3.40E+00 6.00E-02 8.16E-05 4.08E+00Perfluorohexanoic Acid (PFHxA) 0.00059 1.00E-01 5.00E-02 2.95E-05 2.95E-04 6.00E-02 3.54E-05 3.54E-04

TOTAL 7.19E+00 8.63E+00

Threshold Intake and Risk CalculationsGroundwaterConcentrationChemical




Health Risk Calculations - Ingestion of FinfishRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.1a, 2.1a, 3.1a, 4.1a and 5.1a Scenario


Adult IntakeFactor

(threshold)


Hazard Index(Adult)



Hazard Index(Child)


Perfluorooctane Sulfonate (PFOS) 0.00225 1.00E+00 1.86E-05 1.40E-04 3.16E-07 1.70E-02 3.28E-04 7.38E-07 3.97E-02Perfluorooctanoic Acid (PFOA) - - - - - - - - -Perfluorohexane Sulphonate (PFHxS) - - - - - - - - -Perfluorohexanoic Acid (PFHxA) - - - - - - - - -

TOTAL 1.70E-02 3.97E-02

ChemicalFish

ConcentrationOral Bioavailability

Factor





Health Risk Calculations - Incidental ingestion of groundwater during showering/bathingRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.1a, 2.1a, 3.1a, 4.1a and 5.1a Scenario


Adult IntakeFactor (threshold)


Hazard Index(Adult)



Hazard Index(Child)


Perfluorooctane Sulfonate (PFOS) 0.0014 1.86E-05 4.46E-04 6.25E-07 3.36E-02 2.50E-03 3.50E-06 1.88E-01Perfluorooctanoic Acid (PFOA) 0.00009 1.59E-04 4.46E-04 4.02E-08 2.52E-04 2.50E-03 2.25E-07 1.41E-03Perfluorohexane Sulphonate (PFHxS) 0.00136 2.00E-05 4.46E-04 6.07E-07 3.04E-02 2.50E-03 3.40E-06 1.70E-01Perfluorohexanoic Acid (PFHxA) 0.00059 1.00E-01 4.46E-04 2.63E-07 2.63E-06 2.50E-03 1.48E-06 1.48E-05

TOTAL 6.42E-02 3.60E-01

ChemicalGroundwaterConcentration





Health Risk Calculations - Dermal contact with groundwater during showering/bathingRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.1a, 2.1a, 3.1a, 4.1a and 5.1a Scenario




Hazard Index(Adult)



Hazard Index(Child)

(mg/L) (cm/hr) (mg/kg/day) (L/kg/day) (mg/kg/day) (unitless) (L/kg/day) (mg/kg/day) (unitless)

Perfluorooctane Sulfonate (PFOS) 0.0014 0.000001 1.86E-05 7.14E-08 1.00E-10 5.38E-06 1.02E-07 1.42E-10 7.65E-06Perfluorooctanoic Acid (PFOA) 0.00009 0.000001 1.59E-04 7.14E-08 6.43E-12 4.04E-08 1.02E-07 9.15E-12 5.75E-08Perfluorohexane Sulphonate (PFHxS) 0.00136 0.000001 2.00E-05 7.14E-08 9.71E-11 4.86E-06 1.02E-07 1.38E-10 6.91E-06Perfluorohexanoic Acid (PFHxA) 0.00059 0.000001 1.00E-01 7.14E-08 4.21E-11 4.21E-10 1.02E-07 6.00E-11 6.00E-10

TOTAL 1.03E-05 1.46E-05


DermalPermeabilityConstant (kp)





Health Risk Calculations - Incidental ingestion of groundwater during food preparation and cleanupRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.1a, 2.1a, 3.1a, 4.1a and 5.1a Scenario




Hazard Index(Adult)



Hazard Index(Child)


Perfluorooctane Sulfonate (PFOS) 0.0014 1.86E-05 5.71E-05 8.00E-08 4.30E-03 - -Perfluorooctanoic Acid (PFOA) 0.00009 1.59E-04 5.71E-05 5.14E-09 3.23E-05 - -Perfluorohexane Sulphonate (PFHxS) 0.00136 2.00E-05 5.71E-05 7.77E-08 3.89E-03 - -Perfluorohexanoic Acid (PFHxA) 0.00059 1.00E-01 5.71E-05 3.37E-08 3.37E-07 - -

TOTAL 8.22E-03






Health Risk Calculations - Dermal contact with groundwater during food preparation and cleanupRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.1a, 2.1a, 3.1a, 4.1a and 5.1a Scenario




Hazard Index(Adult)



Hazard Index(Child)


Perfluorooctane Sulfonate (PFOS) 0.0014 0.000001 1.86E-05 2.74E-08 3.84E-11 2.06E-06 - -Perfluorooctanoic Acid (PFOA) 0.00009 0.000001 1.59E-04 2.74E-08 2.47E-12 1.55E-08 - -Perfluorohexane Sulphonate (PFHxS) 0.00136 0.000001 2.00E-05 2.74E-08 3.73E-11 1.87E-06 - -Perfluorohexanoic Acid (PFHxA) 0.00059 0.000001 1.00E-01 2.74E-08 1.62E-11 1.62E-10 - -

TOTAL 3.95E-06







Health Risk Calculations - Incidental ingestion of groundwater during domestic laundryRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.1a, 2.1a, 3.1a, 4.1a and 5.1a Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 3.08E-03






Health Risk Calculations - Dermal contact with groundwater during domestic laundryRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.1a, 2.1a, 3.1a, 4.1a and 5.1a Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.48E-06







Health Risk Calculations - Dermal Contact with residues in clothes after washing with groundwaterRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.1a, 2.1a, 3.1a, 4.1a and 5.1a Scenario

Oral RfD(Background

Corrected)



Hazard Index(Adult)



Hazard Index(Child)

(mg/L) (unitless) (mL/m2) (unitless) (mg/kg/day) (L/kg/day) (mg/kg/day) (unitless) (L/kg/day) (mg/kg/day) (unitless)

Perfluorooctane Sulfonate (PFOS) 0.0014 0.0005 4.50E+01 1.00E+00 1.86E-05 5.43E-07 7.60E-10 4.09E-05 3.69E-06 5.17E-09 2.78E-04Perfluorooctanoic Acid (PFOA) 0.00009 0.0005 4.50E+01 1.00E+00 1.59E-04 5.43E-07 4.89E-11 3.07E-07 3.69E-06 3.32E-10 2.09E-06Perfluorohexane Sulphonate (PFHxS) 0.00136 0.0005 4.50E+01 1.00E+00 2.00E-05 5.43E-07 7.38E-10 3.69E-05 3.69E-06 5.02E-09 2.51E-04Perfluorohexanoic Acid (PFHxA) 0.00059 0.0005 4.50E+01 1.00E+00 1.00E-01 5.43E-07 3.20E-10 3.20E-09 3.69E-06 2.18E-09 2.18E-08

TOTAL 7.81E-05 5.31E-04

Fractiontransferred to skinChemical


Water

DermalAbsorption factor

Amount of waterleft in garment





Health Risk Calculations - Incidental ingestion of groundwater during household cleaningRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.1a, 2.1a, 3.1a, 4.1a and 5.1a Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.07E-03 5.01E-03






Health Risk Calculations - Dermal contact with groundwater during household cleaningRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.1a, 2.1a, 3.1a, 4.1a and 5.1a Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 5.15E-07 6.72E-07







Health Risk Calculations - Incidental Ingestion via Hand to Mouth Transfer of Residues on Floors After CleaningRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.1a, 2.1a, 3.1a, 4.1a and 5.1a Scenario




Hazard Index(Adult)



Hazard Index(Child)

(mg/L) (L/cm2) (mg/kg/day) (L/kg/day) (mg/kg/day) (unitless) (L/kg/day) (mg/kg/day) (unitless)

Perfluorooctane Sulfonate (PFOS) 0.0014 1.25E-05 1.86E-05 - - 2.15E-04 3.02E-07 1.62E-02Perfluorooctanoic Acid (PFOA) 0.00009 1.25E-05 1.59E-04 - - 2.15E-04 1.94E-08 1.22E-04Perfluorohexane Sulphonate (PFHxS) 0.00136 1.25E-05 2.00E-05 - - 2.15E-04 2.93E-07 1.46E-02Perfluorohexanoic Acid (PFHxA) 0.00059 1.25E-05 1.00E-01 - - 2.15E-04 1.27E-07 1.27E-06

TOTAL 3.10E-02

Chemical


WaterSurface loading factor





Health Risk Calculations - Dermal Contact with residues on floors after cleaningRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.1a, 2.1a, 3.1a, 4.1a and 5.1a Scenario


Adult IntakeFactor

(threshold)


Hazard Index(Adult)



Hazard Index(Child)

(mg/L) (unitless) (L/cm2) (mg/kg/day) (L/kg/day) (mg/kg/day) (unitless) (L/kg/day) (mg/kg/day) (unitless)

Perfluorooctane Sulfonate (PFOS) 0.0014 0.0005 1.25E-05 1.86E-05 - - 3.62E-06 5.07E-09 2.73E-04Perfluorooctanoic Acid (PFOA) 0.00009 0.0005 1.25E-05 1.59E-04 - - 3.62E-06 3.26E-10 2.05E-06Perfluorohexane Sulphonate (PFHxS) 0.00136 0.0005 1.25E-05 2.00E-05 - - 3.62E-06 4.92E-09 2.46E-04Perfluorohexanoic Acid (PFHxA) 0.00059 0.0005 1.25E-05 1.00E-01 - - 3.62E-06 2.14E-09 2.14E-08

TOTAL 5.21E-04

Chemical

ChemicalConcentration

in Water

Surface loadingfactor

Threshold Intake and Risk CalculationsDermalAbsorption

factor




Health Risk Calculations - Incidental ingestion of groundwater during sprinkler playRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.1a, 2.1a, 3.1a, 4.1a and 5.1a Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 2.74E-02 1.43E-01






Health Risk Calculations - Dermal contact with groundwater during sprinkler playRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.1a, 2.1a, 3.1a, 4.1a and 5.1a Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 8.78E-06 1.16E-05







Health Risk Calculations - Incidental ingestion of groundwater during washing of animalsRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.1a, 2.1a, 3.1a, 4.1a and 5.1a Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 9.66E-03 2.50E-03






Health Risk Calculations - Dermal contact with groundwater during washing of animalsRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.1a, 2.1a, 3.1a, 4.1a and 5.1a Scenario


Adult IntakeFactor

(threshold)


Hazard Index(Adult)

Child IntakeFactor

(threshold)


Hazard Index(Child)



TOTAL 1.35E-05 9.43E-07







Health Risk Calculations - Incidental Ingestion via Hand to Mouth Transfer of Residues on Animals after washing with groundwaterRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.1a, 2.1a, 3.1a, 4.1a and 5.1a Scenario

Water left on dog after washing 0.00007 L/cm2

Body weight of dog 23 kg

Surface area of dog 8443 cm2

Fraction of residue transferred to hands 0.04 unitless




Hazard Index(Adult)



Hazard Index(Child)

(mg/L) L/cm2 (unitless) (mg/kg/day) (L/kg/day) (mg/kg/day) (unitless) (L/kg/day) (mg/kg/day) (unitless)

Perfluorooctane Sulfonate (PFOS) 0.0014 2.36E-05 1.00E+00 1.86E-05 1.69E-04 2.36E-07 1.27E-02 6.20E-05 8.68E-08 4.66E-03Perfluorooctanoic Acid (PFOA) 0.00009 2.36E-05 1.00E+00 1.59E-04 1.69E-04 1.52E-08 9.55E-05 6.20E-05 5.58E-09 3.50E-05Perfluorohexane Sulphonate (PFHxS) 0.00136 2.36E-05 1.00E+00 2.00E-05 1.69E-04 2.30E-07 1.15E-02 6.20E-05 8.43E-08 4.21E-03Perfluorohexanoic Acid (PFHxA) 0.00059 2.36E-05 1.00E+00 1.00E-01 1.69E-04 9.96E-08 9.96E-07 6.20E-05 3.66E-08 3.66E-07

TOTAL 2.43E-02 8.91E-03

Chemical


Water

Hand residue loadingfactor

Threshold Intake and Risk CalculationsOral Bioavailability

Factor






Adult IntakeFactor

(threshold)


Hazard Index(Adult)

Child IntakeFactor

(threshold)


Hazard Index(Child)


Perfluorooctane Sulfonate (PFOS) 0.0014 0.0005 7.00E-05 1.86E-05 6.50E-06 9.10E-09 4.89E-04 3.76E-05 5.26E-08 2.83E-03Perfluorooctanoic Acid (PFOA) 0.00009 0.0005 7.00E-05 1.59E-04 6.50E-06 5.85E-10 3.67E-06 3.76E-05 3.38E-09 2.12E-05Perfluorohexane Sulphonate (PFHxS) 0.00136 0.0005 7.00E-05 2.00E-05 6.50E-06 8.84E-09 4.42E-04 3.76E-05 5.11E-08 2.55E-03Perfluorohexanoic Acid (PFHxA) 0.00059 0.0005 7.00E-05 1.00E-01 6.50E-06 3.84E-09 3.84E-08 3.76E-05 2.22E-08 2.22E-07

TOTAL 9.35E-04 5.40E-03

Chemical


Water

DermalAbsorption

factor

Water left ondog afterwashing









Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.61E-03






Health Risk Calculations - Dermal contact with groundwater during washing of vehiclesRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.1a, 2.1a, 3.1a, 4.1a and 5.1a Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 2.25E-06







Health Risk Calculations - Incidental ingestion of groundwater during irrigationRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.1a, 2.1a, 3.1a, 4.1a and 5.1a Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.13E-02 5.86E-03






Health Risk Calculations - Dermal contact with groundwater during irrigationRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.1a, 2.1a, 3.1a, 4.1a and 5.1a Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.58E-05 2.21E-06







Health Risk Calculations - Incidental ingestion of groundwater used in home swimming poolsRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.1a, 2.1a, 3.1a, 4.1a and 5.1a Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.58E-01 3.57E-01






Health Risk Calculations - Dermal contact with groundwater used in home swimming poolsRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.1a, 2.1a, 3.1a, 4.1a and 5.1a Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 2.53E-05 1.45E-05







Health Risk Calculations - Ingestion of EggsRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.1a, 2.1a, 3.1a, 4.1a and 5.1a Scenario




Hazard Index(Adult)



Hazard Index(Child)

(mg/kg) (mg/kg/day) (kg/kg/day) (mg/kg/day) (unitless) (kg/kg/day) (mg/kg/day) (unitless)

Perfluorooctane Sulfonate (PFOS) 0.011695628 1.86E-05 1.46E-03 1.70E-05 9.16E-01 5.33E-03 6.24E-05 3.35E+00Perfluorooctanoic Acid (PFOA) 0.000202833 1.59E-04 1.46E-03 2.96E-07 1.86E-03 5.33E-03 1.08E-06 6.79E-03Perfluorohexane Sulphonate (PFHxS) - - - - - - - -Perfluorohexanoic Acid (PFHxA) - - - - - - - -

TOTAL 9.18E-01 3.36E+00

Chemical Egg Concentration





Health Risk Calculations - Ingestion of Crustaceans and OsytersRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.1a, 2.1a, 3.1a, 4.1a and 5.1a Scenario


Adult IntakeFactor

(threshold)


Hazard Index(Adult)



Hazard Index(Child)


Perfluorooctane Sulfonate (PFOS) 0.0022 1.00E+00 1.86E-05 7.03E-05 1.55E-07 8.31E-03 3.80E-05 8.36E-08 4.49E-03Perfluorooctanoic Acid (PFOA) 0.0003 1.00E+00 1.59E-04 7.03E-05 2.11E-08 1.32E-04 3.80E-05 1.14E-08 7.16E-05Perfluorohexane Sulphonate (PFHxS) - - - - - - - - -Perfluorohexanoic Acid (PFHxA) - - - - - - - - -

TOTAL 8.45E-03 4.57E-03

Chemical

Crustaceans andOsyters

Concentration

Oral BioavailabilityFactor





Health Risk Calculations - Ingestion of Cattle Muscle Tissue (Beef)RAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.1a, 2.1a, 3.1a, 4.1a and 5.1a Scenario




Hazard Index(Adult)



Hazard Index(Child)


Perfluorooctane Sulfonate (PFOS) 0.018708425 1.00E+00 1.86E-05 8.16E-05 1.53E-06 8.20E-02 1.92E-04 3.59E-06 1.93E-01Perfluorooctanoic Acid (PFOA) 1.5923E-05 1.00E+00 1.59E-04 8.16E-05 1.30E-09 8.16E-06 1.92E-04 3.06E-09 1.92E-05Perfluorohexane Sulphonate (PFHxS) - - - - - - - - -Perfluorohexanoic Acid (PFHxA) - - - - - - - - -

TOTAL 8.21E-02 1.93E-01

Chemical

Concentration inCattle MuscleTissue (Beef

Steer)


OralBioavailability

Factor




Summary of Estimated Health RisksRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.1a, 2.1a, 3.1a, 4.1a and 5.1a Scenario

Adult Exposure Childhood Exposure Adult Exposure Childhood Exposure Adult Exposure Childhood Exposure Adult Exposure Childhood Exposure Adult Exposure Childhood Exposure

SOIL EXPOSURE PATHWAYSIncidental Ingestion of Soil 4.3E-04 3.4E-03 4.3E-04 3.4E-03 4.3E-04 3.4E-03 - - 4.3E-04 3.4E-03Dermal Contact with Soil 3.8E-05 5.4E-05 3.8E-05 5.4E-05 3.8E-05 5.4E-05 - - 3.8E-05 5.4E-05Inhalation of Surface Soil-Derived Dust in Indoor Air 8.0E-07 8.0E-07 8.0E-07 8.0E-07 8.0E-07 8.0E-07 - - 8.0E-07 8.0E-07Inhalation of Surface Soil-Derived Dust in Outdoor Air 2.9E-10 2.9E-10 2.9E-10 2.9E-10 2.9E-10 2.9E-10 - - 2.9E-10 2.9E-10Inhalation of Surface Soil-Derived Vapours in Outdoor Air - - - - - - - - - -Inhalation of Surface Soil-Derived Vapours from Excavation - - - - - - - - - -Inhalation of Subsurface Soil-Derived Vapours in Indoor Air - - - - - - - - - -Inhalation of Subsurface Soil-Derived Vapours in Outdoor Air - - - - - - - - - -

GROUNDWATER EXPOSURE PATHWAYSIngestion of Potable Groundwater 7.2E+00 8.6E+00 - - - - - - - -Inhalation of Groundwater-Derived Vapours in Indoor Air - - - - - - - - - -Inhalation of Groundwater-Derived Vapours in Outdoor Air - - - - - - - - - -Inhalation of Groundwater Vapours (Where GW Enters Trench) - - - - - - - - - -Inhalation of Groundwater Derived Vapours from Shower/ Irrigation - - - - - - - - - -Vapours from Flowing Water - - - - - - - - - -Incidental Ingestion of Groundwater (Bathing or Excavation) - - - - - - - - - -Dermal Contact with Groundwater (Bathing or Excavation) - - - - - - - - - -Incidental ingestion of groundwater during showering/bathing 6.4E-02 3.6E-01 6.4E-02 3.6E-01 - - 6.4E-02 3.6E-01 - -Incidental ingestion of groundwater during food preparation and cleanup 8.2E-03 - 8.2E-03 - - - 8.2E-03 - - -Incidental ingestion of groundwater during domestic laundry 3.1E-03 - 3.1E-03 - - - 3.1E-03 - - -Incidental ingestion of groundwater during household cleaning 1.1E-03 5.0E-03 1.1E-03 5.0E-03 - - 1.1E-03 5.0E-03 - -Incidental ingestion of groundwater during sprinkler play 2.7E-02 1.4E-01 2.7E-02 1.4E-01 2.7E-02 1.4E-01 - - 2.7E-02 1.4E-01Incidental ingestion of groundwater during washing of animals 9.7E-03 2.5E-03 9.7E-03 2.5E-03 9.7E-03 2.5E-03 - - 9.7E-03 2.5E-03Incidental ingestion of groundwater during washing of vehicles 1.6E-03 - 1.6E-03 - 1.6E-03 - - - 1.6E-03 -Incidental ingestion of groundwater during irrigation 1.1E-02 5.9E-03 1.1E-02 5.9E-03 1.1E-02 5.9E-03 - - 1.1E-02 5.9E-03Incidental ingestion of groundwater used in home swimming pools 1.6E-01 3.6E-01 1.6E-01 3.6E-01 1.6E-01 3.6E-01 - - 1.6E-01 3.6E-01Dermal contact with groundwater during showering/bathing 1.0E-05 1.5E-05 1.0E-05 1.5E-05 - - 1.0E-05 1.5E-05 - -Dermal contact with groundwater during food preparation and cleanup 3.9E-06 - 3.9E-06 - - - 3.9E-06 - - -Dermal contact with groundwater during domestic laundry 1.5E-06 - 1.5E-06 - - - 1.5E-06 - - -Dermal contact with groundwater residues after washing clothes 7.8E-05 5.3E-04 7.8E-05 5.3E-04 - - 7.8E-05 5.3E-04 - -Dermal contact with groundwater during household cleaning 5.2E-07 6.7E-07 5.2E-07 6.7E-07 - - 5.2E-07 6.7E-07 - -Incidental ingestion of groundwater residues after washing floors - 3.1E-02 - 3.1E-02 - - - 3.1E-02 - -Dermal contact with groundwater residues after washing floors - 5.2E-04 - 5.2E-04 - - - 5.2E-04 - -Dermal contact with groundwater during sprinkler play 8.8E-06 1.2E-05 8.8E-06 1.2E-05 8.8E-06 1.2E-05 - - 8.8E-06 1.2E-05Dermal contact with groundwater during washing of animals 1.4E-05 9.4E-07 1.4E-05 9.4E-07 1.4E-05 9.4E-07 - - 1.4E-05 9.4E-07Dermal contact with groundwater during washing of vehicles 2.3E-06 - 2.3E-06 - 2.3E-06 - - - 2.3E-06 -Dermal contact with groundwater during irrigation 1.6E-05 2.2E-06 1.6E-05 2.2E-06 1.6E-05 2.2E-06 - - 1.6E-05 2.2E-06Dermal contact with groundwater residues after washing companion animals 9.3E-04 5.4E-03 9.3E-04 5.4E-03 9.3E-04 5.4E-03 - - 9.3E-04 5.4E-03Incidental ingestion of groundwater residues after washing companion animals 2.4E-02 8.9E-03 2.4E-02 8.9E-03 2.4E-02 8.9E-03 - - 2.4E-02 8.9E-03Dermal contact with groundwater used in home swimming pools 2.5E-05 1.5E-05 2.5E-05 1.5E-05 2.5E-05 1.5E-05 - - 2.5E-05 1.5E-05

DIETARY EXPOSURE PATHWAYSIngestion of finfish from the Site 1.7E-02 4.0E-02 1.7E-02 4.0E-02 1.7E-02 4.0E-02 1.7E-02 4.0E-02 1.7E-02 4.0E-02Ingestion of breast milk by infants - - - - - - - - - -Ingestion of home grown beef 8.2E-02 1.9E-01 8.2E-02 1.9E-01 8.2E-02 1.9E-01 - - - -Ingestion of home grown livestock milk - - - - - - - - - -Ingestion of home grown eggs 9.2E-01 3.4E+00 9.2E-01 3.4E+00 9.2E-01 3.4E+00 - - - -Ingestion of home grown fruit - - - - - - - - - -Ingestion of home grown green vegetables - - - - - - - - - -Ingestion of home grown lamb - - - - - - - - - -Ingestion of rabbit meat - - - - - - - - - -Ingestion of crustaceans and oysters 8.4E-03 4.6E-03 8.4E-03 4.6E-03 8.4E-03 4.6E-03 8.4E-03 4.6E-03 8.4E-03 4.6E-03

TOTAL 8.53E+00 1.32E+01 1.34E+00 4.52E+00 1.26E+00 4.12E+00 1.02E-01 4.41E-01 2.60E-01 5.70E-01

Scenario 4.1a

Threshold Risk Estimates

Scenario 5.1a

Threshold Risk EstimatesExposure Pathway Threshold Risk Estimates Threshold Risk Estimates Threshold Risk Estimates

Scenario 1.1a Scenario 2.1a Scenario 3.1a



Scenario 1.1b, 2.1b, 3.1b, 4.1b and 5.1b


Groundwater(mg/L)


(mg/kg)


(mg/kg)

Site: RAAF Base Williamtown Perfluorooctane Sulfonate (PFOS) 0.00419 0.000358 modelled modelled 0.00225 0.0022Address: RAAF Base Williamtown, NSW Perfluorooctanoic Acid (PFOA) 0 0.0000658 modelled modelled 0.0003Client: Department of Defence Perfluorohexane Sulphonate (PFHxS) 0 0.00028 modelled modelledScenario: Scenario 1.1b, 2.1b, 3.1b, 4.1b and 5.1b Perfluorohexanoic Acid (PFHxA) 0 0.00059 modelled modelled













































Dermal contact with sediment










x Ingestion of beef

Ingestion of lamb

Ingestion of rabbit





Soil (mg/kg)


Receptor:Residential (with soil access)Exposure Assumptions:Average Exposure





Calculation of Surface Loading on Floors Following CleaningRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.1b, 2.1b, 3.1b, 4.1b and 5.1b Scenario


Floor Area m2


Water (C)


Surfaceloading on

floor

mg/L L/cm2 mg/cm2


Chemical

10.0

1.25




Calculation of Concentrations in Cattle Meat (Steer) Based on Environmental ConcentrationsRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.1b, 2.1b, 3.1b, 4.1b and 5.1b Scenario







SoilConcentration

(Cs)


(Cp)



(CDIlivestock)


Beef SteerVolume of

Distribution(Vd)




Serum Ratio(TSR)





Chemical




Calculation of Contaminant Concentrations in EggsRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.1b, 2.1b, 3.1b, 4.1b and 5.1b Scenario








L/day 0.61 CCME (1999)




SoilConcentration



(Cw)1





Chemical




Health Risk Calculations - Incidental Soil IngestionRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.1b, 2.1b, 3.1b, 4.1b and 5.1b Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.61E-04 7.51E-04



Factor




Health Risk Calculations - Dermal Contact with SoilRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.1b, 2.1b, 3.1b, 4.1b and 5.1b Scenario


Adult IntakeFactor

(threshold)


Hazard Index(Adult)

Child IntakeFactor

(threshold)


Hazard Index(Child)



TOTAL 5.07E-06 7.07E-06



DermalAbsorption

Factor (DAF)




Health Risk Calculations - Inhalation of Soil-Derived Dust (Particulates) in Indoor AirRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.1b, 2.1b, 3.1b, 4.1b and 5.1b Scenario





Hazard Index(Adult)




Hazard Index(Child)



TOTAL 3.60E-07 2.93E-07




Surface Soil)




Health Risk Calculations - Inhalation of Soil-Derived Dust (Particulates) in Outdoor AirRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.1b, 2.1b, 3.1b, 4.1b and 5.1b Scenario



(threshold)



Hazard Index(Adult)




Hazard Index(Child)



TOTAL 9.68E-11 6.45E-11








Health Risk Calculations - Ingestion of Potable GroundwaterRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.1b, 2.1b, 3.1b, 4.1b and 5.1b Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 9.62E-01 8.98E-01





Health Risk Calculations - Ingestion of FinfishRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.1b, 2.1b, 3.1b, 4.1b and 5.1b Scenario


Adult IntakeFactor

(threshold)


Hazard Index(Adult)



Hazard Index(Child)



TOTAL 5.67E-03 1.32E-02

ChemicalFish


Factor





Health Risk Calculations - Incidental ingestion of groundwater during showering/bathingRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.1b, 2.1b, 3.1b, 4.1b and 5.1b Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 9.62E-04 8.98E-03






Health Risk Calculations - Dermal contact with groundwater during showering/bathingRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.1b, 2.1b, 3.1b, 4.1b and 5.1b Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 7.70E-07 1.10E-06







Health Risk Calculations - Incidental ingestion of groundwater during food preparation and cleanupRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.1b, 2.1b, 3.1b, 4.1b and 5.1b Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 5.77E-04






Health Risk Calculations - Dermal contact with groundwater during food preparation and cleanupRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.1b, 2.1b, 3.1b, 4.1b and 5.1b Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 4.62E-07







Health Risk Calculations - Incidental ingestion of groundwater during domestic laundryRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.1b, 2.1b, 3.1b, 4.1b and 5.1b Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 6.17E-05






Health Risk Calculations - Dermal contact with groundwater during domestic laundryRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.1b, 2.1b, 3.1b, 4.1b and 5.1b Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 4.93E-08







Health Risk Calculations - Dermal Contact with residues in clothes after washing with groundwaterRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.1b, 2.1b, 3.1b, 4.1b and 5.1b Scenario

Oral RfD(Background

Corrected)



Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.83E-05 4.97E-05

Fraction transferredto skinChemical


Water







Health Risk Calculations - Incidental ingestion of groundwater during household cleaningRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.1b, 2.1b, 3.1b, 4.1b and 5.1b Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 3.77E-05 1.76E-04






Health Risk Calculations - Dermal contact with groundwater during household cleaningRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.1b, 2.1b, 3.1b, 4.1b and 5.1b Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 3.01E-08 3.93E-08







Health Risk Calculations - Incidental Ingestion via Hand to Mouth Transfer of Residues on Floors After CleaningRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.1b, 2.1b, 3.1b, 4.1b and 5.1b Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.15E-03

Chemical







Health Risk Calculations - Dermal Contact with residues on floors after cleaningRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.1b, 2.1b, 3.1b, 4.1b and 5.1b Scenario


Adult IntakeFactor

(threshold)


Hazard Index(Adult)



Hazard Index(Child)



TOTAL 2.44E-05

Chemical


in Water



factor




Health Risk Calculations - Incidental ingestion of groundwater during sprinkler playRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.1b, 2.1b, 3.1b, 4.1b and 5.1b Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 2.14E-04 3.57E-03






Health Risk Calculations - Dermal contact with groundwater during sprinkler playRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.1b, 2.1b, 3.1b, 4.1b and 5.1b Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 3.43E-07 8.70E-07







Health Risk Calculations - Incidental ingestion of groundwater during washing of animalsRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.1b, 2.1b, 3.1b, 4.1b and 5.1b Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 7.54E-05 5.86E-05






Health Risk Calculations - Dermal contact with groundwater during washing of animalsRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.1b, 2.1b, 3.1b, 4.1b and 5.1b Scenario


Adult IntakeFactor

(threshold)


Hazard Index(Adult)

Child IntakeFactor

(threshold)


Hazard Index(Child)



TOTAL 1.76E-07 3.68E-08







Health Risk Calculations - Incidental Ingestion via Hand to Mouth Transfer of Residues on Animals after washing with groundwaterRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.1b, 2.1b, 3.1b, 4.1b and 5.1b Scenario








Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.68E-03 4.36E-04

Chemical


Water



Factor






Adult IntakeFactor

(threshold)


Hazard Index(Adult)

Child IntakeFactor

(threshold)


Hazard Index(Child)



TOTAL 6.74E-05 2.20E-04

Chemical


Water

DermalAbsorption

factor










Hazard Index(Adult)



Hazard Index(Child)



TOTAL 3.77E-05






Health Risk Calculations - Dermal contact with groundwater during washing of vehiclesRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.1b, 2.1b, 3.1b, 4.1b and 5.1b Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 8.79E-08







Health Risk Calculations - Incidental ingestion of groundwater during irrigationRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.1b, 2.1b, 3.1b, 4.1b and 5.1b Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 3.01E-04 1.56E-04






Health Risk Calculations - Dermal contact with groundwater during irrigationRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.1b, 2.1b, 3.1b, 4.1b and 5.1b Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 7.03E-07 9.81E-08







Health Risk Calculations - Incidental ingestion of groundwater used in home swimming poolsRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.1b, 2.1b, 3.1b, 4.1b and 5.1b Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 8.56E-04 7.13E-03






Health Risk Calculations - Dermal contact with groundwater used in home swimming poolsRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.1b, 2.1b, 3.1b, 4.1b and 5.1b Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 6.85E-07 8.70E-07







Health Risk Calculations - Ingestion of EggsRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.1b, 2.1b, 3.1b, 4.1b and 5.1b Scenario




Hazard Index(Adult)



Hazard Index(Child)


Perfluorooctane Sulfonate (PFOS) 0.003015111 1.86E-05 9.80E-04 2.95E-06 1.59E-01 2.28E-03 6.87E-06 3.70E-01Perfluorooctanoic Acid (PFOA) 0.000148293 1.59E-04 9.80E-04 1.45E-07 9.13E-04 2.28E-03 3.38E-07 2.12E-03Perfluorohexane Sulphonate (PFHxS) - - - - - - - -Perfluorohexanoic Acid (PFHxA) - - - - - - - -

TOTAL 1.60E-01 3.72E-01






Health Risk Calculations - Ingestion of Crustaceans and OsytersRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.1b, 2.1b, 3.1b, 4.1b and 5.1b Scenario


Adult IntakeFactor

(threshold)


Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.30E-03 8.01E-05

Chemical


Concentration






Health Risk Calculations - Ingestion of Cattle Muscle Tissue (Beef)RAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.1b, 2.1b, 3.1b, 4.1b and 5.1b Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 7.61E-03 1.76E-02

Chemical


Steer)


OralBioavailability

Factor




Summary of Estimated Health RisksRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.1b, 2.1b, 3.1b, 4.1b and 5.1b Scenario



GROUNDWATER EXPOSURE PATHWAYSIngestion of Potable Groundwater 9.6E-01 9.0E-01 - - - - - - - -Inhalation of Groundwater-Derived Vapours in Indoor Air - - - - - - - - - -Inhalation of Groundwater-Derived Vapours in Outdoor Air - - - - - - - - - -Inhalation of Groundwater Vapours (Where GW Enters Trench) - - - - - - - - - -Inhalation of Groundwater Derived Vapours from Shower/ Irrigation - - - - - - - - - -Vapours from Flowing Water - - - - - - - - - -Incidental Ingestion of Groundwater (Bathing or Excavation) - - - - - - - - - -Dermal Contact with Groundwater (Bathing or Excavation) - - - - - - - - - -Incidental ingestion of groundwater during showering/bathing 9.6E-04 9.0E-03 9.6E-04 9.0E-03 - - 9.6E-04 9.0E-03 - -Incidental ingestion of groundwater during food preparation and cleanup 5.8E-04 - 5.8E-04 - - - 5.8E-04 - - -Incidental ingestion of groundwater during domestic laundry 6.2E-05 - 6.2E-05 - - - 6.2E-05 - - -Incidental ingestion of groundwater during household cleaning 3.8E-05 1.8E-04 3.8E-05 1.8E-04 - - 3.8E-05 1.8E-04 - -Incidental ingestion of groundwater during sprinkler play 2.1E-04 3.6E-03 2.1E-04 3.6E-03 2.1E-04 3.6E-03 - - 2.1E-04 3.6E-03Incidental ingestion of groundwater during washing of animals 7.5E-05 5.9E-05 7.5E-05 5.9E-05 7.5E-05 5.9E-05 - - 7.5E-05 5.9E-05Incidental ingestion of groundwater during washing of vehicles 3.8E-05 - 3.8E-05 - 3.8E-05 - - - 3.8E-05 -Incidental ingestion of groundwater during irrigation 3.0E-04 1.6E-04 3.0E-04 1.6E-04 3.0E-04 1.6E-04 - - 3.0E-04 1.6E-04Incidental ingestion of groundwater used in home swimming pools 8.6E-04 7.1E-03 8.6E-04 7.1E-03 8.6E-04 7.1E-03 - - 8.6E-04 7.1E-03Dermal contact with groundwater during showering/bathing 7.7E-07 1.1E-06 7.7E-07 1.1E-06 - - 7.7E-07 1.1E-06 - -Dermal contact with groundwater during food preparation and cleanup 4.6E-07 - 4.6E-07 - - - 4.6E-07 - - -Dermal contact with groundwater during domestic laundry 4.9E-08 - 4.9E-08 - - - 4.9E-08 - - -Dermal contact with groundwater residues after washing clothes 1.8E-05 5.0E-05 1.8E-05 5.0E-05 - - 1.8E-05 5.0E-05 - -Dermal contact with groundwater during household cleaning 3.0E-08 3.9E-08 3.0E-08 3.9E-08 - - 3.0E-08 3.9E-08 - -Incidental ingestion of groundwater residues after washing floors - 1.2E-03 - 1.2E-03 - - - 1.2E-03 - -Dermal contact with groundwater residues after washing floors - 2.4E-05 - 2.4E-05 - - - 2.4E-05 - -Dermal contact with groundwater during sprinkler play 3.4E-07 8.7E-07 3.4E-07 8.7E-07 3.4E-07 8.7E-07 - - 3.4E-07 8.7E-07Dermal contact with groundwater during washing of animals 1.8E-07 3.7E-08 1.8E-07 3.7E-08 1.8E-07 3.7E-08 - - 1.8E-07 3.7E-08Dermal contact with groundwater during washing of vehicles 8.8E-08 - 8.8E-08 - 8.8E-08 - - - 8.8E-08 -Dermal contact with groundwater during irrigation 7.0E-07 9.8E-08 7.0E-07 9.8E-08 7.0E-07 9.8E-08 - - 7.0E-07 9.8E-08Dermal contact with groundwater residues after washing companion animals 6.7E-05 2.2E-04 6.7E-05 2.2E-04 6.7E-05 2.2E-04 - - 6.7E-05 2.2E-04Incidental ingestion of groundwater residues after washing companion animals 1.7E-03 4.4E-04 1.7E-03 4.4E-04 1.7E-03 4.4E-04 - - 1.7E-03 4.4E-04Dermal contact with groundwater used in home swimming pools 6.9E-07 8.7E-07 6.9E-07 8.7E-07 6.9E-07 8.7E-07 - - 6.9E-07 8.7E-07

DIETARY EXPOSURE PATHWAYSIngestion of finfish from the Site 5.7E-03 1.3E-02 5.7E-03 1.3E-02 5.7E-03 1.3E-02 5.7E-03 1.3E-02 5.7E-03 1.3E-02Ingestion of breast milk by infants - - - - - - - - - -Ingestion of home grown beef 7.6E-03 1.8E-02 7.6E-03 1.8E-02 7.6E-03 1.8E-02 - - - -Ingestion of home grown livestock milk - - - - - - - - - -Ingestion of home grown eggs 1.6E-01 3.7E-01 1.6E-01 3.7E-01 1.6E-01 3.7E-01 - - - -Ingestion of home grown fruit - - - - - - - - - -Ingestion of home grown green vegetables - - - - - - - - - -Ingestion of home grown lamb - - - - - - - - - -Ingestion of rabbit meat - - - - - - - - - -Ingestion of crustaceans and oysters 1.3E-03 8.0E-05 1.3E-03 8.0E-05 1.3E-03 8.0E-05 1.3E-03 8.0E-05 1.3E-03 8.0E-05

TOTAL 1.14E+00 1.32E+00 1.79E-01 4.25E-01 1.78E-01 4.15E-01 8.63E-03 2.37E-02 1.04E-02 2.56E-02

Scenario 4.1b


Scenario 5.1b


Scenario 1.1b Scenario 2.1b Scenario 3.1b





Sediment(mg/kg)

SurfaceWater (mg/L)

Groundwater(mg/L)


(mg/kg)


(mg/kg)

Site: RAAF Base Williamtown Perfluorooctane Sulfonate (PFOS) 0.00935 0.013 0.00373 0.0014 modelled modelled 0.00225 0.0022Address: RAAF Base Williamtown, NSW Perfluorooctanoic Acid (PFOA) 0 0.00008 0.00009 modelled modelled 0.0003Client: Department of Defence Perfluorohexane Sulphonate (PFHxS) 0 0.00347 0.00136 modelled modelledScenario: Scenario 1.2a, 2.2a, 3.2a, 4.2a and 5.2a Perfluorohexanoic Acid (PFHxA) 0 0.0007 0.00059 modelled modelled












































Sediment Pathwaysx Incidental ingestion of sediment

x Dermal contact with sediment

Surface Water Pathwaysx Incidental ingestion of surface water during fishing

x Dermal contact with surface water during fishing








x Ingestion of beef

Ingestion of lamb

Ingestion of rabbit





Soil (mg/kg)







Calculation of Surface Loading on Floors Following CleaningRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.2a, 2.2a, 3.2a, 4.2a and 5.2a Scenario


Floor Area m2


Water (C)


Surfaceloading on

floor

mg/L L/cm2 mg/cm2


Chemical

10.0

1.25




Calculation of Concentrations in Cattle Meat (Steer) Based on Environmental ConcentrationsRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.2a, 2.2a, 3.2a, 4.2a and 5.2a Scenario







SoilConcentration

(Cs)


(Cp)



(CDIlivestock)


Beef SteerVolume of

Distribution(Vd)




Serum Ratio(TSR)





Chemical




Calculation of Contaminant Concentrations in EggsRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.2a, 2.2a, 3.2a, 4.2a and 5.2a Scenario








L/day 0.61 CCME (1999)




SoilConcentration



(Cw)1





Chemical




Health Risk Calculations - Incidental Soil IngestionRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.2a, 2.2a, 3.2a, 4.2a and 5.2a Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 4.31E-04 3.35E-03



Factor




Health Risk Calculations - Dermal Contact with SoilRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.2a, 2.2a, 3.2a, 4.2a and 5.2a Scenario


Adult IntakeFactor

(threshold)


Hazard Index(Adult)

Child IntakeFactor

(threshold)


Hazard Index(Child)



TOTAL 3.85E-05 5.36E-05



DermalAbsorption

Factor (DAF)




Health Risk Calculations - Inhalation of Soil-Derived Dust (Particulates) in Indoor AirRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.2a, 2.2a, 3.2a, 4.2a and 5.2a Scenario





Hazard Index(Adult)




Hazard Index(Child)



TOTAL 8.03E-07 8.03E-07




Surface Soil)




Health Risk Calculations - Inhalation of Soil-Derived Dust (Particulates) in Outdoor AirRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.2a, 2.2a, 3.2a, 4.2a and 5.2a Scenario



(threshold)



Hazard Index(Adult)




Hazard Index(Child)



TOTAL 2.88E-10 2.88E-10








Health Risk Calculations - Ingestion of Potable GroundwaterRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.2a, 2.2a, 3.2a, 4.2a and 5.2a Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 7.19E+00 8.63E+00





Health Risk Calculations - Ingestion of FinfishRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.2a, 2.2a, 3.2a, 4.2a and 5.2a Scenario


Adult IntakeFactor

(threshold)


Hazard Index(Adult)



Hazard Index(Child)



TOTAL 3.96E-02 9.26E-02

ChemicalFish


Factor





Health Risk Calculations - Incidental ingestion of groundwater during showering/bathingRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.2a, 2.2a, 3.2a, 4.2a and 5.2a Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 6.42E-02 3.60E-01






Health Risk Calculations - Dermal contact with groundwater during showering/bathingRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.2a, 2.2a, 3.2a, 4.2a and 5.2a Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.03E-05 1.46E-05







Health Risk Calculations - Incidental ingestion of groundwater during food preparation and cleanupRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.2a, 2.2a, 3.2a, 4.2a and 5.2a Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 8.22E-03






Health Risk Calculations - Dermal contact with groundwater during food preparation and cleanupRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.2a, 2.2a, 3.2a, 4.2a and 5.2a Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 3.95E-06







Health Risk Calculations - Incidental ingestion of groundwater during domestic laundryRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.2a, 2.2a, 3.2a, 4.2a and 5.2a Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 3.08E-03






Health Risk Calculations - Dermal contact with groundwater during domestic laundryRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.2a, 2.2a, 3.2a, 4.2a and 5.2a Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.48E-06







Health Risk Calculations - Dermal Contact with residues in clothes after washing with groundwaterRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.2a, 2.2a, 3.2a, 4.2a and 5.2a Scenario

Oral RfD(Background

Corrected)



Hazard Index(Adult)



Hazard Index(Child)



TOTAL 7.81E-05 5.31E-04



Water







Health Risk Calculations - Incidental ingestion of groundwater during household cleaningRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.2a, 2.2a, 3.2a, 4.2a and 5.2a Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.07E-03 5.01E-03






Health Risk Calculations - Dermal contact with groundwater during household cleaningRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.2a, 2.2a, 3.2a, 4.2a and 5.2a Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 5.15E-07 6.72E-07







Health Risk Calculations - Incidental Ingestion via Hand to Mouth Transfer of Residues on Floors After CleaningRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.2a, 2.2a, 3.2a, 4.2a and 5.2a Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 3.10E-02

Chemical









Adult IntakeFactor

(threshold)


Hazard Index(Adult)



Hazard Index(Child)



TOTAL 5.21E-04

Chemical


in Water



factor




Health Risk Calculations - Incidental ingestion of groundwater during sprinkler playRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.2a, 2.2a, 3.2a, 4.2a and 5.2a Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 2.74E-02 1.43E-01






Health Risk Calculations - Dermal contact with groundwater during sprinkler playRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.2a, 2.2a, 3.2a, 4.2a and 5.2a Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 8.78E-06 1.16E-05











Hazard Index(Adult)



Hazard Index(Child)



TOTAL 9.66E-03 2.50E-03






Health Risk Calculations - Dermal contact with groundwater during washing of animalsRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.2a, 2.2a, 3.2a, 4.2a and 5.2a Scenario


Adult IntakeFactor

(threshold)


Hazard Index(Adult)

Child IntakeFactor

(threshold)


Hazard Index(Child)



TOTAL 1.35E-05 9.43E-07







Health Risk Calculations - Incidental Ingestion via Hand to Mouth Transfer of Residues on Animals after washing with groundwaterRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.2a, 2.2a, 3.2a, 4.2a and 5.2a Scenario








Hazard Index(Adult)



Hazard Index(Child)



TOTAL 2.43E-02 8.91E-03

Chemical


Water



Factor






Adult IntakeFactor

(threshold)


Hazard Index(Adult)

Child IntakeFactor

(threshold)


Hazard Index(Child)



TOTAL 9.35E-04 5.40E-03

Chemical


Water

DermalAbsorption

factor










Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.61E-03






Health Risk Calculations - Dermal contact with groundwater during washing of vehiclesRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.2a, 2.2a, 3.2a, 4.2a and 5.2a Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 2.25E-06







Health Risk Calculations - Incidental ingestion of groundwater during irrigationRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.2a, 2.2a, 3.2a, 4.2a and 5.2a Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.13E-02 5.86E-03






Health Risk Calculations - Dermal contact with groundwater during irrigationRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.2a, 2.2a, 3.2a, 4.2a and 5.2a Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.58E-05 2.21E-06







Health Risk Calculations - Incidental ingestion of groundwater used in home swimming poolsRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.2a, 2.2a, 3.2a, 4.2a and 5.2a Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.58E-01 3.57E-01






Health Risk Calculations - Dermal contact with groundwater used in home swimming poolsRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.2a, 2.2a, 3.2a, 4.2a and 5.2a Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 2.53E-05 1.45E-05







Health Risk Calculations - Incidental Sediment IngestionRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.2a, 2.2a, 3.2a, 4.2a and 5.2a Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.71E-04 3.32E-04

ChemicalSediment

ConcentrationOral Sediment

Bioavailability Factor





Health Risk Calculations - Dermal Contact with SedimentRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.2a, 2.2a, 3.2a, 4.2a and 5.2a Scenario


Adult IntakeFactor

(threshold)


Hazard Index(Adult)

Child IntakeFactor

(threshold)


Hazard Index(Child)


Perfluorooctane Sulfonate (PFOS) 0.013 0.0005 1.86E-05 1.34E-08 1.74E-10 9.33E-06 3.84E-09 5.00E-11 2.69E-06Perfluorooctanoic Acid (PFOA) - - - - - - - - -Perfluorohexane Sulphonate (PFHxS) - - - - - - - - -Perfluorohexanoic Acid (PFHxA) - - - - - - - - -

TOTAL 9.33E-06 2.69E-06

ChemicalSediment

Concentration

DermalAbsorption

Factor (DAF)





Health Risk Calculations - Dermal contact with surface water during fishingRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.2a, 2.2a, 3.2a, 4.2a and 5.2a Scenario




Hazard Index(Adult)



Hazard Index(Child)



- - - - - - - - -

TOTAL 3.84E-05 3.01E-06

ChemicalSurface WaterConcentration






Health Risk Calculations - Incidental ingestion of surface water water during fishingRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.2a, 2.2a, 3.2a, 4.2a and 5.2a Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 5.93E-02 1.73E-02






Health Risk Calculations - Ingestion of EggsRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.2a, 2.2a, 3.2a, 4.2a and 5.2a Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 9.18E-01 3.36E+00






Health Risk Calculations - Ingestion of Crustaceans and OsytersRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.2a, 2.2a, 3.2a, 4.2a and 5.2a Scenario


Adult IntakeFactor

(threshold)


Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.97E-02 1.07E-02

Chemical


Concentration






Health Risk Calculations - Ingestion of Cattle Muscle Tissue (Beef)RAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.2a, 2.2a, 3.2a, 4.2a and 5.2a Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 8.21E-02 1.93E-01

Chemical


Steer)


OralBioavailability

Factor




Summary of Estimated Health RisksRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.2a, 2.2a, 3.2a, 4.2a and 5.2a Scenario



SEDIMENT EXPOSURE PATHWAYSIncidental ingestion of sediment 1.7E-04 3.3E-04 1.7E-04 3.3E-04 1.7E-04 3.3E-04 1.7E-04 3.3E-04 1.7E-04 3.3E-04Dermal contact with sediment 9.3E-06 2.7E-06 9.3E-06 2.7E-06 9.3E-06 2.7E-06 9.3E-06 2.7E-06 9.3E-06 2.7E-06

GROUNDWATER EXPOSURE PATHWAYSIngestion of Potable Groundwater 7.2E+00 8.6E+00 - - - - - - - -Inhalation of Groundwater-Derived Vapours in Indoor Air - - - - - - - - - -Inhalation of Groundwater-Derived Vapours in Outdoor Air - - - - - - - - - -Inhalation of Groundwater Vapours (Where GW Enters Trench) - - - - - - - - - -Inhalation of Groundwater Derived Vapours from Shower/ Irrigation - - - - - - - - - -Vapours from Flowing Water - - - - - - - - - -Incidental Ingestion of Groundwater (Bathing or Excavation) - - - - - - - - - -Dermal Contact with Groundwater (Bathing or Excavation) - - - - - - - - - -Incidental ingestion of groundwater during showering/bathing 6.4E-02 3.6E-01 6.4E-02 3.6E-01 - - 6.4E-02 3.6E-01 - -Incidental ingestion of groundwater during food preparation and cleanup 8.2E-03 - 8.2E-03 - - - 8.2E-03 - - -Incidental ingestion of groundwater during domestic laundry 3.1E-03 - 3.1E-03 - - - 3.1E-03 - - -Incidental ingestion of groundwater during household cleaning 1.1E-03 5.0E-03 1.1E-03 5.0E-03 - - 1.1E-03 5.0E-03 - -Incidental ingestion of groundwater during sprinkler play 2.7E-02 1.4E-01 2.7E-02 1.4E-01 2.7E-02 1.4E-01 - - 2.7E-02 1.4E-01Incidental ingestion of groundwater during washing of animals 9.7E-03 2.5E-03 9.7E-03 2.5E-03 9.7E-03 2.5E-03 - - 9.7E-03 2.5E-03Incidental ingestion of groundwater during washing of vehicles 1.6E-03 - 1.6E-03 - 1.6E-03 - - - 1.6E-03 -Incidental ingestion of groundwater during irrigation 1.1E-02 5.9E-03 1.1E-02 5.9E-03 1.1E-02 5.9E-03 - - 1.1E-02 5.9E-03Incidental ingestion of groundwater used in home swimming pools 1.6E-01 3.6E-01 1.6E-01 3.6E-01 1.6E-01 3.6E-01 - - 1.6E-01 3.6E-01Dermal contact with groundwater during showering/bathing 1.0E-05 1.5E-05 1.0E-05 1.5E-05 - - 1.0E-05 1.5E-05 - -Dermal contact with groundwater during food preparation and cleanup 3.9E-06 - 3.9E-06 - - - 3.9E-06 - - -Dermal contact with groundwater during domestic laundry 1.5E-06 - 1.5E-06 - - - 1.5E-06 - - -Dermal contact with groundwater residues after washing clothes 7.8E-05 5.3E-04 7.8E-05 5.3E-04 - - 7.8E-05 5.3E-04 - -Dermal contact with groundwater during household cleaning 5.2E-07 6.7E-07 5.2E-07 6.7E-07 - - 5.2E-07 6.7E-07 - -Incidental ingestion of groundwater residues after washing floors - 3.1E-02 - 3.1E-02 - - - 3.1E-02 - -Dermal contact with groundwater residues after washing floors - 5.2E-04 - 5.2E-04 - - - 5.2E-04 - -Dermal contact with groundwater during sprinkler play 8.8E-06 1.2E-05 8.8E-06 1.2E-05 8.8E-06 1.2E-05 - - 8.8E-06 1.2E-05Dermal contact with groundwater during washing of animals 1.4E-05 9.4E-07 1.4E-05 9.4E-07 1.4E-05 9.4E-07 - - 1.4E-05 9.4E-07Dermal contact with groundwater during washing of vehicles 2.3E-06 - 2.3E-06 - 2.3E-06 - - - 2.3E-06 -Dermal contact with groundwater during irrigation 1.6E-05 2.2E-06 1.6E-05 2.2E-06 1.6E-05 2.2E-06 - - 1.6E-05 2.2E-06Dermal contact with groundwater residues after washing companion animals 9.3E-04 5.4E-03 9.3E-04 5.4E-03 9.3E-04 5.4E-03 - - 9.3E-04 5.4E-03Incidental ingestion of groundwater residues after washing companion animals 2.4E-02 8.9E-03 2.4E-02 8.9E-03 2.4E-02 8.9E-03 - - 2.4E-02 8.9E-03Dermal contact with groundwater used in home swimming pools 2.5E-05 1.5E-05 2.5E-05 1.5E-05 2.5E-05 1.5E-05 - - 2.5E-05 1.5E-05

SURFACE WATER EXPOSURE PATHWAYSIncidental ingestion of surface water during fishing 5.9E-02 1.7E-02 5.9E-02 1.7E-02 5.9E-02 1.7E-02 5.9E-02 1.7E-02 5.9E-02 1.7E-02Incidental ingestion of surface water during boating - - - - - - - - - -Incidental ingestion of surface water during swimming in creeks/rivers - - - - - - - - - -Dermal contact with surface water during fishing 3.8E-05 3.0E-06 3.8E-05 3.0E-06 3.8E-05 3.0E-06 3.8E-05 3.0E-06 3.8E-05 3.0E-06Dermal contact with surface water during boating - - - - - - - - - -Dermal contact with surface water during swimming in creeks/rivers - - - - - - - - - -

DIETARY EXPOSURE PATHWAYSIngestion of finfish from the Site 4.0E-02 9.3E-02 4.0E-02 9.3E-02 4.0E-02 9.3E-02 4.0E-02 9.3E-02 4.0E-02 9.3E-02Ingestion of home grown beef 8.2E-02 1.9E-01 8.2E-02 1.9E-01 8.2E-02 1.9E-01 - - - -Ingestion of home grown livestock milk - - - - - - - - - -Ingestion of home grown eggs 9.2E-01 3.4E+00 9.2E-01 3.4E+00 9.2E-01 3.4E+00 - - - -Ingestion of home grown fruit - - - - - - - - - -Ingestion of home grown green vegetables - - - - - - - - - -Ingestion of crustaceans and oysters 2.0E-02 1.1E-02 2.0E-02 1.1E-02 2.0E-02 1.1E-02 2.0E-02 1.1E-02 2.0E-02 1.1E-02

TOTAL 8.62E+00 1.32E+01 1.43E+00 4.60E+00 1.35E+00 4.20E+00 1.96E-01 5.18E-01 3.53E-01 6.46E-01

Scenario 4.2a


Scenario 5.2a


Scenario 1.2a Scenario 2.2a Scenario 3.2a





Sediment(mg/kg)

SurfaceWater (mg/L)

Groundwater(mg/L)


(mg/kg)


(mg/kg)

Site: RAAF Base Williamtown Perfluorooctane Sulfonate (PFOS) 0.00419 0.0094 0.001581 0.000358 modelled modelled 0.00225 0.0022Address: RAAF Base Williamtown, NSW Perfluorooctanoic Acid (PFOA) 0 0.000376 0.0000658 modelled modelled 0.0003Client: Department of Defence Perfluorohexane Sulphonate (PFHxS) 0 0.002439 0.00028 modelled modelledScenario: Scenario 1.2b, 2.2b, 3.2b, 4.2b and 5.2b Perfluorohexanoic Acid (PFHxA) 0 0.000342 0.00059 modelled modelled























































x Ingestion of beef

Ingestion of lamb

Ingestion of rabbit





Soil (mg/kg)







Calculation of Surface Loading on Floors Following CleaningRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.2b, 2.2b, 3.2b, 4.2b and 5.2b Scenario


Floor Area m2


Water (C)


Surfaceloading on

floor

mg/L L/cm2 mg/cm2


Chemical

10.0

1.25




Calculation of Concentrations in Cattle Meat (Steer) Based on Environmental ConcentrationsRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.2b, 2.2b, 3.2b, 4.2b and 5.2b Scenario







SoilConcentration

(Cs)


(Cp)



(CDIlivestock)


Beef SteerVolume of

Distribution(Vd)




Serum Ratio(TSR)





Chemical




Calculation of Contaminant Concentrations in EggsRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.2b, 2.2b, 3.2b, 4.2b and 5.2b Scenario








L/day 0.61 CCME (1999)




SoilConcentration



(Cw)1





Chemical




Health Risk Calculations - Incidental Soil IngestionRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.2b, 2.2b, 3.2b, 4.2b and 5.2b Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.61E-04 7.51E-04



Factor




Health Risk Calculations - Dermal Contact with SoilRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.2b, 2.2b, 3.2b, 4.2b and 5.2b Scenario


Adult IntakeFactor

(threshold)


Hazard Index(Adult)

Child IntakeFactor

(threshold)


Hazard Index(Child)



TOTAL 5.07E-06 7.07E-06



DermalAbsorption

Factor (DAF)




Health Risk Calculations - Inhalation of Soil-Derived Dust (Particulates) in Indoor AirRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.2b, 2.2b, 3.2b, 4.2b and 5.2b Scenario





Hazard Index(Adult)




Hazard Index(Child)



TOTAL 3.60E-07 2.93E-07




Surface Soil)




Health Risk Calculations - Inhalation of Soil-Derived Dust (Particulates) in Outdoor AirRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.2b, 2.2b, 3.2b, 4.2b and 5.2b Scenario



(threshold)



Hazard Index(Adult)




Hazard Index(Child)



TOTAL 9.68E-11 6.45E-11








Health Risk Calculations - Ingestion of Potable GroundwaterRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.2b, 2.2b, 3.2b, 4.2b and 5.2b Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 9.62E-01 8.98E-01





Health Risk Calculations - Ingestion of FinfishRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.2b, 2.2b, 3.2b, 4.2b and 5.2b Scenario


Adult IntakeFactor

(threshold)


Hazard Index(Adult)



Hazard Index(Child)



TOTAL 8.50E-03 1.98E-02

ChemicalFish


Factor





Health Risk Calculations - Incidental ingestion of groundwater during showering/bathingRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.2b, 2.2b, 3.2b, 4.2b and 5.2b Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 9.62E-04 8.98E-03






Health Risk Calculations - Dermal contact with groundwater during showering/bathingRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.2b, 2.2b, 3.2b, 4.2b and 5.2b Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 7.70E-07 1.10E-06







Health Risk Calculations - Incidental ingestion of groundwater during food preparation and cleanupRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.2b, 2.2b, 3.2b, 4.2b and 5.2b Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 5.77E-04






Health Risk Calculations - Dermal contact with groundwater during food preparation and cleanupRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.2b, 2.2b, 3.2b, 4.2b and 5.2b Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 4.62E-07







Health Risk Calculations - Incidental ingestion of groundwater during domestic laundryRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.2b, 2.2b, 3.2b, 4.2b and 5.2b Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 6.17E-05






Health Risk Calculations - Dermal contact with groundwater during domestic laundryRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.2b, 2.2b, 3.2b, 4.2b and 5.2b Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 4.93E-08







Health Risk Calculations - Dermal Contact with residues in clothes after washing with groundwaterRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.2b, 2.2b, 3.2b, 4.2b and 5.2b Scenario

Oral RfD(Background

Corrected)



Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.83E-05 4.97E-05



Water







Health Risk Calculations - Incidental ingestion of groundwater during household cleaningRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.2b, 2.2b, 3.2b, 4.2b and 5.2b Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 3.77E-05 1.76E-04






Health Risk Calculations - Dermal contact with groundwater during household cleaningRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.2b, 2.2b, 3.2b, 4.2b and 5.2b Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 3.01E-08 3.93E-08







Health Risk Calculations - Incidental Ingestion via Hand to Mouth Transfer of Residues on Floors After CleaningRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.2b, 2.2b, 3.2b, 4.2b and 5.2b Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.15E-03

Chemical









Adult IntakeFactor

(threshold)


Hazard Index(Adult)



Hazard Index(Child)



TOTAL 2.44E-05

Chemical


in Water



factor




Health Risk Calculations - Incidental ingestion of groundwater during sprinkler playRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.2b, 2.2b, 3.2b, 4.2b and 5.2b Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 2.14E-04 3.57E-03






Health Risk Calculations - Dermal contact with groundwater during sprinkler playRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.2b, 2.2b, 3.2b, 4.2b and 5.2b Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 3.43E-07 8.70E-07











Hazard Index(Adult)



Hazard Index(Child)



TOTAL 7.54E-05 5.86E-05






Health Risk Calculations - Dermal contact with groundwater during washing of animalsRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.2b, 2.2b, 3.2b, 4.2b and 5.2b Scenario


Adult IntakeFactor

(threshold)


Hazard Index(Adult)

Child IntakeFactor

(threshold)


Hazard Index(Child)



TOTAL 1.76E-07 3.68E-08







Health Risk Calculations - Incidental Ingestion via Hand to Mouth Transfer of Residues on Animals after washing with groundwaterRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.2b, 2.2b, 3.2b, 4.2b and 5.2b Scenario








Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.68E-03 4.36E-04

Chemical


Water



Factor






Adult IntakeFactor

(threshold)


Hazard Index(Adult)

Child IntakeFactor

(threshold)


Hazard Index(Child)



TOTAL 6.74E-05 2.20E-04

Chemical


Water

DermalAbsorption

factor










Hazard Index(Adult)



Hazard Index(Child)



TOTAL 3.77E-05






Health Risk Calculations - Dermal contact with groundwater during washing of vehiclesRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.2b, 2.2b, 3.2b, 4.2b and 5.2b Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 8.79E-08







Health Risk Calculations - Incidental ingestion of groundwater during irrigationRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.2b, 2.2b, 3.2b, 4.2b and 5.2b Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 3.01E-04 1.56E-04






Health Risk Calculations - Dermal contact with groundwater during irrigationRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.2b, 2.2b, 3.2b, 4.2b and 5.2b Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 7.03E-07 9.81E-08







Health Risk Calculations - Incidental ingestion of groundwater used in home swimming poolsRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.2b, 2.2b, 3.2b, 4.2b and 5.2b Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 8.56E-04 7.13E-03






Health Risk Calculations - Dermal contact with groundwater used in home swimming poolsRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.2b, 2.2b, 3.2b, 4.2b and 5.2b Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 6.85E-07 8.70E-07







Health Risk Calculations - Incidental Sediment IngestionRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.2b, 2.2b, 3.2b, 4.2b and 5.2b Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 5.14E-05 6.00E-05

ChemicalSediment







Health Risk Calculations - Dermal Contact with SedimentRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.2b, 2.2b, 3.2b, 4.2b and 5.2b Scenario


Adult IntakeFactor

(threshold)


Hazard Index(Adult)

Child IntakeFactor

(threshold)


Hazard Index(Child)



TOTAL 2.97E-06 4.76E-07

ChemicalSediment

Concentration

DermalAbsorption

Factor (DAF)





Health Risk Calculations - Dermal contact with surface water during fishingRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.2b, 2.2b, 3.2b, 4.2b and 5.2b Scenario




Hazard Index(Adult)



Hazard Index(Child)



- - - - - - - - -

TOTAL 9.44E-07 7.40E-08







Health Risk Calculations - Incidental ingestion of surface water water during fishingRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.2b, 2.2b, 3.2b, 4.2b and 5.2b Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 4.86E-04 1.42E-04






Health Risk Calculations - Ingestion of EggsRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.2b, 2.2b, 3.2b, 4.2b and 5.2b Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.60E-01 3.72E-01






Health Risk Calculations - Ingestion of Crustaceans and OsytersRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.2b, 2.2b, 3.2b, 4.2b and 5.2b Scenario


Adult IntakeFactor

(threshold)


Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.96E-03 1.20E-04

Chemical


Concentration






Health Risk Calculations - Ingestion of Cattle Muscle Tissue (Beef)RAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.2b, 2.2b, 3.2b, 4.2b and 5.2b Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 7.61E-03 1.76E-02

Chemical


Steer)


OralBioavailability

Factor




Summary of Estimated Health RisksRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.2b, 2.2b, 3.2b, 4.2b and 5.2b Scenario



SEDIMENT EXPOSURE PATHWAYSIncidental ingestion of sediment 5.1E-05 6.0E-05 5.1E-05 6.0E-05 5.1E-05 6.0E-05 5.1E-05 6.0E-05 5.1E-05 6.0E-05Dermal contact with sediment 3.0E-06 4.8E-07 3.0E-06 4.8E-07 3.0E-06 4.8E-07 3.0E-06 4.8E-07 3.0E-06 4.8E-07

GROUNDWATER EXPOSURE PATHWAYSIngestion of Potable Groundwater 9.6E-01 9.0E-01 - - - - - - - -Inhalation of Groundwater-Derived Vapours in Indoor Air - - - - - - - - - -Inhalation of Groundwater-Derived Vapours in Outdoor Air - - - - - - - - - -Inhalation of Groundwater Vapours (Where GW Enters Trench) - - - - - - - - - -Inhalation of Groundwater Derived Vapours from Shower/ Irrigation - - - - - - - - - -Vapours from Flowing Water - - - - - - - - - -Incidental Ingestion of Groundwater (Bathing or Excavation) - - - - - - - - - -Dermal Contact with Groundwater (Bathing or Excavation) - - - - - - - - - -Incidental ingestion of groundwater during showering/bathing 9.6E-04 9.0E-03 9.6E-04 9.0E-03 - - 9.6E-04 9.0E-03 - -Incidental ingestion of groundwater during food preparation and cleanup 5.8E-04 - 5.8E-04 - - - 5.8E-04 - - -Incidental ingestion of groundwater during domestic laundry 6.2E-05 - 6.2E-05 - - - 6.2E-05 - - -Incidental ingestion of groundwater during household cleaning 3.8E-05 1.8E-04 3.8E-05 1.8E-04 - - 3.8E-05 1.8E-04 - -Incidental ingestion of groundwater during sprinkler play 2.1E-04 3.6E-03 2.1E-04 3.6E-03 2.1E-04 3.6E-03 - - 2.1E-04 3.6E-03Incidental ingestion of groundwater during washing of animals 7.5E-05 5.9E-05 7.5E-05 5.9E-05 7.5E-05 5.9E-05 - - 7.5E-05 5.9E-05Incidental ingestion of groundwater during washing of vehicles 3.8E-05 - 3.8E-05 - 3.8E-05 - - - 3.8E-05 -Incidental ingestion of groundwater during irrigation 3.0E-04 1.6E-04 3.0E-04 1.6E-04 3.0E-04 1.6E-04 - - 3.0E-04 1.6E-04Incidental ingestion of groundwater used in home swimming pools 8.6E-04 7.1E-03 8.6E-04 7.1E-03 8.6E-04 7.1E-03 - - 8.6E-04 7.1E-03Dermal contact with groundwater during showering/bathing 7.7E-07 1.1E-06 7.7E-07 1.1E-06 - - 7.7E-07 1.1E-06 - -Dermal contact with groundwater during food preparation and cleanup 4.6E-07 - 4.6E-07 - - - 4.6E-07 - - -Dermal contact with groundwater during domestic laundry 4.9E-08 - 4.9E-08 - - - 4.9E-08 - - -Dermal contact with groundwater residues after washing clothes 1.8E-05 5.0E-05 1.8E-05 5.0E-05 - - 1.8E-05 5.0E-05 - -Dermal contact with groundwater during household cleaning 3.0E-08 3.9E-08 3.0E-08 3.9E-08 - - 3.0E-08 3.9E-08 - -Incidental ingestion of groundwater residues after washing floors - 1.2E-03 - 1.2E-03 - - - 1.2E-03 - -Dermal contact with groundwater residues after washing floors - 2.4E-05 - 2.4E-05 - - - 2.4E-05 - -Dermal contact with groundwater during sprinkler play 3.4E-07 8.7E-07 3.4E-07 8.7E-07 3.4E-07 8.7E-07 - - 3.4E-07 8.7E-07Dermal contact with groundwater during washing of animals 1.8E-07 3.7E-08 1.8E-07 3.7E-08 1.8E-07 3.7E-08 - - 1.8E-07 3.7E-08Dermal contact with groundwater during washing of vehicles 8.8E-08 - 8.8E-08 - 8.8E-08 - - - 8.8E-08 -Dermal contact with groundwater during irrigation 7.0E-07 9.8E-08 7.0E-07 9.8E-08 7.0E-07 9.8E-08 - - 7.0E-07 9.8E-08Dermal contact with groundwater residues after washing companion animals 6.7E-05 2.2E-04 6.7E-05 2.2E-04 6.7E-05 2.2E-04 - - 6.7E-05 2.2E-04Incidental ingestion of groundwater residues after washing companion animals 1.7E-03 4.4E-04 1.7E-03 4.4E-04 1.7E-03 4.4E-04 - - 1.7E-03 4.4E-04Dermal contact with groundwater used in home swimming pools 6.9E-07 8.7E-07 6.9E-07 8.7E-07 6.9E-07 8.7E-07 - - 6.9E-07 8.7E-07

SURFACE WATER EXPOSURE PATHWAYSIncidental ingestion of surface water during fishing 4.9E-04 1.4E-04 4.9E-04 1.4E-04 4.9E-04 1.4E-04 4.9E-04 1.4E-04 4.9E-04 1.4E-04Incidental ingestion of surface water during boating - - - - - - - - - -Incidental ingestion of surface water during swimming in creeks/rivers - - - - - - - - - -Dermal contact with surface water during fishing 9.4E-07 7.4E-08 9.4E-07 7.4E-08 9.4E-07 7.4E-08 9.4E-07 7.4E-08 9.4E-07 7.4E-08Dermal contact with surface water during boating - - - - - - - - - -Dermal contact with surface water during swimming in creeks/rivers - - - - - - - - - -

DIETARY EXPOSURE PATHWAYSIngestion of finfish from the Site 8.5E-03 2.0E-02 8.5E-03 2.0E-02 8.5E-03 2.0E-02 8.5E-03 2.0E-02 8.5E-03 2.0E-02Ingestion of breast milk by infants - - - - - - - - - -Ingestion of home grown beef 7.6E-03 1.8E-02 7.6E-03 1.8E-02 7.6E-03 1.8E-02 - - - -Ingestion of home grown livestock milk - - - - - - - - - -Ingestion of home grown eggs 1.6E-01 3.7E-01 1.6E-01 3.7E-01 1.6E-01 3.7E-01 - - - -Ingestion of home grown fruit - - - - - - - - - -Ingestion of home grown green vegetables - - - - - - - - - -Ingestion of home grown lamb - - - - - - - - - -Ingestion of rabbit meat - - - - - - - - - -Ingestion of crustaceans and oysters 2.0E-03 1.2E-04 2.0E-03 1.2E-04 2.0E-03 1.2E-04 2.0E-03 1.2E-04 2.0E-03 1.2E-04

TOTAL 1.15E+00 1.33E+00 1.83E-01 4.32E-01 1.82E-01 4.22E-01 1.27E-02 3.05E-02 1.44E-02 3.25E-02

Scenario 4.2b


Scenario 5.2b


Scenario 1.2b Scenario 2.2b Scenario 3.2b


AECOM


Scenario 6Stage 2B Investigation AreaRisk Estimates



Scenario 6.1a


Sediment(mg/kg)

SurfaceWater (mg/L)

Cattle Meat(mg/kg)

Finfish(mg/kg)


(mg/kg)

Site: RAAF Base Williamtown Perfluorooctane Sulfonate (PFOS) 0.00935 0.1052 0.004734 modelled 0.00225 0.0022Address: RAAF Base Williamtown, NSW Perfluorooctanoic Acid (PFOA) 0 0.0006016 modelled 0.0003Client: Department of Defence Perfluorohexane Sulphonate (PFHxS) 0 0.04 0.006105 modelledScenario: Scenario 6.1a Perfluorohexanoic Acid (PFHxA) 0 0.005 0.002065 modelled













Groundwater PathwaysIngestion of potable groundwater








Incidental ingestion of groundwater during showering/bathing

Dermal contact with groundwater during showering/bathing

Incidental ingestion of groundwater during food preparation and cleanup

Dermal contact with groundwater during food preparation and cleanup

Incidental ingestion of groundwater during domestic laundry

Dermal contact with groundwater during domestic laundry

Dermal contact with groundwater residues after washing clothes

Incidental ingestion of groundwater during household cleaning

Dermal contact with groundwater during household cleaning

Incidental ingestion of groundwater residues after washing floors

Dermal contact with groundwater residues after washing floors

Incidental ingestion of groundwater during sprinkler play

Dermal contact with groundwater during sprinkler play

Incidental ingestion of groundwater during washing of animalsDermal contact with groundwater during washing of animalsIncidental ingestion of groundwater residues after washing animals

Dermal contact with groundwater residues after washing companion animals

Incidental ingestion of groundwater during washing of vehicles

Dermal contact with groundwater during washing of vehicles

Incidental ingestion of groundwater during irrigation

Dermal contact with groundwater during irrigation

Incidental ingestion of groundwater used in home swimming pools

Dermal contact with groundwater used in home swimming pools









x Incidental ingestion of surface water during swimming in creeks/rivers

x Dermal contact with surface water during swimming in creeks/rivers

x Incidental ingestion of surface water during irrigation

x Dermal contact with surface water during irrigation

Dietary PathwaysIngestion of home grown eggs



x Ingestion of beef

Ingestion of lamb

Ingestion of rabbit





Soil (mg/kg)






Scenario 6.1a

Calculation of Concentrations in Cattle Meat (Steer) Based on Environmental ConcentrationsRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 6.1a Scenario







SoilConcentration

(Cs)


(Cp)



(CDIlivestock)


Beef SteerVolume of

Distribution(Vd)




Serum Ratio(TSR)





Chemical



Scenario 6.1a

Health Risk Calculations - Incidental Soil IngestionRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 6.1a Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 4.31E-04 3.35E-03



Factor



Scenario 6.1a

Health Risk Calculations - Dermal Contact with SoilRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 6.1a Scenario


Adult IntakeFactor

(threshold)


Hazard Index(Adult)

Child IntakeFactor

(threshold)


Hazard Index(Child)



TOTAL 3.85E-05 5.36E-05



DermalAbsorption

Factor (DAF)



Scenario 6.1a

Health Risk Calculations - Inhalation of Soil-Derived Dust (Particulates) in Indoor AirRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 6.1a Scenario





Hazard Index(Adult)




Hazard Index(Child)



TOTAL 8.03E-07 8.03E-07




Surface Soil)



Scenario 6.1a

Health Risk Calculations - Inhalation of Soil-Derived Dust (Particulates) in Outdoor AirRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 6.1a Scenario



(threshold)



Hazard Index(Adult)




Hazard Index(Child)



TOTAL 2.88E-10 2.88E-10







Scenario 6.1a

Health Risk Calculations - Ingestion of FinfishRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 6.1a Scenario


Adult IntakeFactor

(threshold)


Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.70E-02 3.97E-02

ChemicalFish


Factor




Scenario 6.1a

Health Risk Calculations - Incidental Sediment IngestionRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 6.1a Scenario




Hazard Index(Adult)



Hazard Index(Child)


Perfluorooctane Sulfonate (PFOS) 0.1052 1.00E+00 1.86E-05 2.44E-07 2.57E-08 1.38E-03 4.75E-07 5.00E-08 2.69E-03Perfluorooctanoic Acid (PFOA) - - - - - - - - -Perfluorohexane Sulphonate (PFHxS) 0.04 1.00E+00 2.00E-05 2.44E-07 9.77E-09 4.88E-04 4.75E-07 1.90E-08 9.50E-04Perfluorohexanoic Acid (PFHxA) 0.005 1.00E+00 1.00E-01 2.44E-07 1.22E-09 1.22E-08 4.75E-07 2.37E-09 2.37E-08

TOTAL 1.87E-03 3.64E-03

ChemicalSediment






Scenario 6.1a

Health Risk Calculations - Dermal Contact with SedimentRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 6.1a Scenario


Adult IntakeFactor

(threshold)


Hazard Index(Adult)

Child IntakeFactor

(threshold)


Hazard Index(Child)


Perfluorooctane Sulfonate (PFOS) 0.1052 0.0005 1.86E-05 1.34E-08 1.40E-09 7.55E-05 3.84E-09 4.04E-10 2.17E-05Perfluorooctanoic Acid (PFOA) - - - - - - - - -Perfluorohexane Sulphonate (PFHxS) 0.04 0.0005 2.00E-05 1.34E-08 5.34E-10 2.67E-05 3.84E-09 1.54E-10 7.69E-06Perfluorohexanoic Acid (PFHxA) 0.005 0.0005 1.00E-01 1.34E-08 6.68E-11 6.68E-10 3.84E-09 1.92E-11 1.92E-10

TOTAL 1.02E-04 2.94E-05

ChemicalSediment

Concentration

DermalAbsorption

Factor (DAF)




Scenario 6.1a

Health Risk Calculations - Incidental ingestion of surface water water during swimming in creeks and other surface water bodiesRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 6.1a Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 6.20E-01 1.61E+00





Scenario 6.1a

Health Risk Calculations - Dermal contact with surface water during swimming in creeks and other surface water bodiesRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 6.1a Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 9.93E-05 6.53E-05






Scenario 6.1a

Health Risk Calculations - Ingestion of Crustaceans and OsytersRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 6.1a Scenario


Adult IntakeFactor

(threshold)


Hazard Index(Adult)



Hazard Index(Child)



TOTAL 8.45E-03 4.57E-03

Chemical


Concentration





Scenario 6.1a

Health Risk Calculations - Ingestion of Cattle Muscle Tissue (Beef)RAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 6.1a Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 8.21E-02 1.93E-01

Chemical


Steer)


OralBioavailability

Factor



Scenario 6.1a

Health Risk Calculations - Incidental ingestion of surface water during irrigationRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 6.1a Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 4.43E-02 2.30E-02





Scenario 6.1a

Health Risk Calculations - Dermal contact with surface water during irrigationRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 6.1a Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 6.20E-05 8.64E-06






Scenario 6.1a

Summary of Estimated Health RisksRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 6.1a Scenario

Adult Exposure Childhood Exposure

SOIL EXPOSURE PATHWAYSIncidental Ingestion of Soil 4.3E-04 3.4E-03Dermal Contact with Soil 3.8E-05 5.4E-05Inhalation of Surface Soil-Derived Dust in Indoor Air 8.0E-07 8.0E-07Inhalation of Surface Soil-Derived Dust in Outdoor Air 2.9E-10 2.9E-10Inhalation of Surface Soil-Derived Vapours in Outdoor Air - -Inhalation of Surface Soil-Derived Vapours from Excavation - -Inhalation of Subsurface Soil-Derived Vapours in Indoor Air - -Inhalation of Subsurface Soil-Derived Vapours in Outdoor Air - -

SEDIMENT EXPOSURE PATHWAYSIncidental ingestion of sediment 1.9E-03 3.6E-03Dermal contact with sediment 1.0E-04 2.9E-05

SURFACE WATER EXPOSURE PATHWAYSIncidental ingestion of surface water during fishing - -Incidental ingestion of surface water during boating - -Incidental ingestion of surface water during swimming in creeks/rivers 6.2E-01 1.6E+00Incidental ingestion of surface water during irrigation 4.4E-02 2.3E-02Dermal contact with surface water during fishing - -Dermal contact with surface water during boating - -Dermal contact with surface water during swimming in creeks/rivers 9.9E-05 6.5E-05Dermal contact with surface water during irrigation 6.2E-05 8.6E-06

DIETARY EXPOSURE PATHWAYSIngestion of finfish from the Site 1.7E-02 4.0E-02Ingestion of breast milk by infants - -Ingestion of home grown beef 8.2E-02 1.9E-01Ingestion of home grown livestock milk - -Ingestion of home grown eggs - -Ingestion of home grown fruit - -Ingestion of home grown green vegetables - -Ingestion of home grown lamb - -Ingestion of rabbit meat - -Ingestion of crustaceans and oysters 8.4E-03 4.6E-03

TOTAL 7.75E-01 1.87E+00

Exposure Pathway Threshold Risk Estimates

Scenario 6.1a



Scenario 6.1b


Sediment(mg/kg)

SurfaceWater (mg/L)

Cattle Meat(mg/kg)

Finfish(mg/kg)


(mg/kg)

Site: RAAF Base Williamtown Perfluorooctane Sulfonate (PFOS) 0.00419 0.0501 0.001724 modelled 0.00225 0.0022Address: RAAF Base Williamtown, NSW Perfluorooctanoic Acid (PFOA) 0 0.000123 modelled 0.0003Client: Department of Defence Perfluorohexane Sulphonate (PFHxS) 0 0.0139 0.003045 modelledScenario: Scenario 6.1b Perfluorohexanoic Acid (PFHxA) 0 0.00231 0.00099 modelled

























































x Ingestion of beef

Ingestion of lamb

Ingestion of rabbit





Soil (mg/kg)






Scenario 6.1b

Calculation of Concentrations in Cattle Meat (Steer) Based on Environmental ConcentrationsRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 6.1b Scenario







SoilConcentration

(Cs)


(Cp)



(CDIlivestock)


Beef SteerVolume of

Distribution(Vd)




Serum Ratio(TSR)





Chemical



Scenario 6.1b

Health Risk Calculations - Incidental Soil IngestionRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 6.1b Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.61E-04 7.51E-04



Factor



Scenario 6.1b

Health Risk Calculations - Dermal Contact with SoilRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 6.1b Scenario


Adult IntakeFactor

(threshold)


Hazard Index(Adult)

Child IntakeFactor

(threshold)


Hazard Index(Child)



TOTAL 5.07E-06 7.07E-06



DermalAbsorption

Factor (DAF)



Scenario 6.1b

Health Risk Calculations - Inhalation of Soil-Derived Dust (Particulates) in Indoor AirRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 6.1b Scenario





Hazard Index(Adult)




Hazard Index(Child)



TOTAL 3.60E-07 2.93E-07




Surface Soil)



Scenario 6.1b

Health Risk Calculations - Inhalation of Soil-Derived Dust (Particulates) in Outdoor AirRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 6.1b Scenario



(threshold)



Hazard Index(Adult)




Hazard Index(Child)



TOTAL 9.68E-11 6.45E-11







Scenario 6.1b

Health Risk Calculations - Ingestion of FinfishRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 6.1b Scenario


Adult IntakeFactor

(threshold)


Hazard Index(Adult)



Hazard Index(Child)



TOTAL 5.67E-03 1.32E-02

ChemicalFish


Factor




Scenario 6.1b

Health Risk Calculations - Incidental Sediment IngestionRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 6.1b Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 3.45E-04 4.02E-04

ChemicalSediment






Scenario 6.1b

Health Risk Calculations - Dermal Contact with SedimentRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 6.1b Scenario


Adult IntakeFactor

(threshold)


Hazard Index(Adult)

Child IntakeFactor

(threshold)


Hazard Index(Child)



TOTAL 1.99E-05 3.19E-06

ChemicalSediment

Concentration

DermalAbsorption

Factor (DAF)




Scenario 6.1b

Health Risk Calculations - Incidental ingestion of surface water water during swimming in creeks and other surface water bodiesRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 6.1b Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 6.25E-03 7.35E-03





Scenario 6.1b

Health Risk Calculations - Dermal contact with surface water during swimming in creeks and other surface water bodiesRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 6.1b Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 5.00E-06 8.97E-07






Scenario 6.1b

Health Risk Calculations - Ingestion of Crustaceans and OsytersRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 6.1b Scenario


Adult IntakeFactor

(threshold)


Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.30E-03 8.01E-05

Chemical


Concentration





Scenario 6.1b

Health Risk Calculations - Ingestion of Cattle Muscle Tissue (Beef)RAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 6.1b Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 7.61E-03 1.76E-02

Chemical


Steer)


OralBioavailability

Factor



Scenario 6.1b

Health Risk Calculations - Incidental ingestion of surface water during irrigationRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 6.1b Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 2.20E-03 1.14E-03





Scenario 6.1b

Health Risk Calculations - Dermal contact with surface water during irrigationRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 6.1b Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 5.13E-06 7.16E-07






Scenario 6.1b

Summary of Estimated Health RisksRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 6.1b Scenario




SURFACE WATER EXPOSURE PATHWAYSIncidental ingestion of surface water during fishing - -Incidental ingestion of surface water during boating - -Incidental ingestion of surface water during swimming in creeks/rivers 6.3E-03 7.4E-03Incidental ingestion of surface water during irrigation 2.2E-03 1.1E-03Dermal contact with surface water during fishing - -Dermal contact with surface water during boating - -Dermal contact with surface water during swimming in creeks/rivers 5.0E-06 9.0E-07Dermal contact with surface water during irrigation 5.1E-06 7.2E-07


TOTAL 2.4E-02 4.1E-02


Scenario 6.1b



Scenario 6.2a


Sediment(mg/kg)

SurfaceWater (mg/L)

Cattle Meat(mg/kg)

Finfish(mg/kg)


(mg/kg)

Site: RAAF Base Williamtown Perfluorooctane Sulfonate (PFOS) 0.00935 0.1052 0.004734 modelled 0.00225 0.0022Address: RAAF Base Williamtown, NSW Perfluorooctanoic Acid (PFOA) 0 0.000616 modelled 0.0003Client: Department of Defence Perfluorohexane Sulphonate (PFHxS) 0 0.04 0.006105 modelledScenario: Scenario 6.2a Perfluorohexanoic Acid (PFHxA) 0 0.005 0.002065 modelled

























































x Ingestion of beef

Ingestion of lamb

Ingestion of rabbit





Soil (mg/kg)






Scenario 6.2a

Calculation of Concentrations in Cattle Meat (Steer) Based on Environmental ConcentrationsRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 6.2a Scenario







SoilConcentration

(Cs)


(Cp)



(CDIlivestock)


Beef SteerVolume of

Distribution(Vd)




Serum Ratio(TSR)





Chemical



Scenario 6.2a

Health Risk Calculations - Incidental Soil IngestionRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 6.2a Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 4.31E-04 3.35E-03



Factor



Scenario 6.2a

Health Risk Calculations - Dermal Contact with SoilRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 6.2a Scenario


Adult IntakeFactor

(threshold)


Hazard Index(Adult)

Child IntakeFactor

(threshold)


Hazard Index(Child)



TOTAL 3.85E-05 5.36E-05



DermalAbsorption

Factor (DAF)



Scenario 6.2a

Health Risk Calculations - Inhalation of Soil-Derived Dust (Particulates) in Indoor AirRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 6.2a Scenario





Hazard Index(Adult)




Hazard Index(Child)



TOTAL 8.03E-07 8.03E-07




Surface Soil)



Scenario 6.2a

Health Risk Calculations - Inhalation of Soil-Derived Dust (Particulates) in Outdoor AirRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 6.2a Scenario



(threshold)



Hazard Index(Adult)




Hazard Index(Child)



TOTAL 2.88E-10 2.88E-10







Scenario 6.2a

Health Risk Calculations - Ingestion of FinfishRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 6.2a Scenario


Adult IntakeFactor

(threshold)


Hazard Index(Adult)



Hazard Index(Child)



TOTAL 3.96E-02 9.26E-02

ChemicalFish


Factor




Scenario 6.2a

Health Risk Calculations - Incidental Sediment IngestionRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 6.2a Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.87E-03 3.64E-03

ChemicalSediment






Scenario 6.2a

Health Risk Calculations - Dermal Contact with SedimentRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 6.2a Scenario


Adult IntakeFactor

(threshold)


Hazard Index(Adult)

Child IntakeFactor

(threshold)


Hazard Index(Child)



TOTAL 1.02E-04 2.94E-05

ChemicalSediment

Concentration

DermalAbsorption

Factor (DAF)




Scenario 6.2a

Health Risk Calculations - Incidental ingestion of surface water water during swimming in creeks and other surface water bodiesRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 6.2a Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 6.20E-01 1.61E+00





Scenario 6.2a

Health Risk Calculations - Dermal contact with surface water during swimming in creeks and other surface water bodiesRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 6.2a Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 9.93E-05 6.53E-05






Scenario 6.2a

Health Risk Calculations - Ingestion of Crustaceans and OsytersRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 6.2a Scenario


Adult IntakeFactor

(threshold)


Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.97E-02 1.07E-02

Chemical


Concentration





Scenario 6.2a

Health Risk Calculations - Ingestion of Cattle Muscle Tissue (Beef)RAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 6.2a Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 8.21E-02 1.93E-01

Chemical


Steer)


OralBioavailability

Factor



Scenario 6.2a

Health Risk Calculations - Incidental ingestion of surface water during irrigationRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 6.2a Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 4.43E-02 2.30E-02





Scenario 6.2a

Health Risk Calculations - Dermal contact with surface water during irrigationRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 6.2a Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 6.20E-05 8.64E-06






Scenario 6.2a

Summary of Estimated Health RisksRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 6.2a Scenario



SEDIMENT EXPOSURE PATHWAYSIncidental ingestion of sediment in creeks/rivers and other surface water bodies 1.9E-03 3.6E-03Dermal contact with sediment in creeks/rivers and other surface water bodies 1.0E-04 2.9E-05Incidental ingestion of sediment during recreational fishing (Scenario 1.2a) 1.7E-04 3.3E-04Dermal contact with sediment during recreational fishing (Scenario 1.2a) 9.3E-06 2.7E-06

SURFACE WATER EXPOSURE PATHWAYSIncidental ingestion of surface water during fishing (Scenario 1.2a) 5.9E-02 1.7E-02Incidental ingestion of surface water during boating - -Incidental ingestion of surface water during swimming in creeks/rivers 6.2E-01 1.6E+00Incidental ingestion of surface water during irrigation 4.4E-02 2.3E-02Dermal contact with surface water during fishing (Scenario 1.2a) 3.8E-05 3.0E-06Dermal contact with surface water during boating - -Dermal contact with surface water during swimming in creeks/rivers 9.9E-05 6.5E-05Dermal contact with surface water during irrigation 6.2E-05 8.6E-06


TOTAL 8.68E-01 1.95E+00


Scenario 6.2a



Scenario 6.2b


Sediment(mg/kg)

SurfaceWater (mg/L)

Cattle Meat(mg/kg)

Finfish(mg/kg)


(mg/kg)

Site: RAAF Base Williamtown Perfluorooctane Sulfonate (PFOS) 0.00419 0.0501 0.001724 modelled 0.00225 0.0022Address: RAAF Base Williamtown, NSW Perfluorooctanoic Acid (PFOA) 0 0.000123 modelled 0.0003Client: Department of Defence Perfluorohexane Sulphonate (PFHxS) 0 0.0139 0.003045 modelledScenario: Scenario 6.2b Perfluorohexanoic Acid (PFHxA) 0 0.00231 0.00099 modelled

























































x Ingestion of beef

Ingestion of lamb

Ingestion of rabbit





Soil (mg/kg)






Scenario 6.2b

Calculation of Concentrations in Cattle Meat (Steer) Based on Environmental ConcentrationsRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 6.2b Scenario







SoilConcentration

(Cs)


(Cp)



(CDIlivestock)


Beef SteerVolume of

Distribution(Vd)




Serum Ratio(TSR)





Chemical



Scenario 6.2b

Health Risk Calculations - Incidental Soil IngestionRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 6.2b Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.61E-04 7.51E-04



Factor



Scenario 6.2b

Health Risk Calculations - Dermal Contact with SoilRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 6.2b Scenario


Adult IntakeFactor

(threshold)


Hazard Index(Adult)

Child IntakeFactor

(threshold)


Hazard Index(Child)



TOTAL 5.07E-06 7.07E-06



DermalAbsorption

Factor (DAF)



Scenario 6.2b

Health Risk Calculations - Inhalation of Soil-Derived Dust (Particulates) in Indoor AirRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 6.2b Scenario





Hazard Index(Adult)




Hazard Index(Child)



TOTAL 3.60E-07 2.93E-07




Surface Soil)



Scenario 6.2b

Health Risk Calculations - Inhalation of Soil-Derived Dust (Particulates) in Outdoor AirRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 6.2b Scenario



(threshold)



Hazard Index(Adult)




Hazard Index(Child)



TOTAL 9.68E-11 6.45E-11







Scenario 6.2b

Health Risk Calculations - Ingestion of FinfishRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 6.2b Scenario


Adult IntakeFactor

(threshold)


Hazard Index(Adult)



Hazard Index(Child)



TOTAL 8.50E-03 1.98E-02

ChemicalFish


Factor




Scenario 6.2b

Health Risk Calculations - Incidental Sediment IngestionRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 6.2b Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 3.45E-04 4.02E-04

ChemicalSediment






Scenario 6.2b

Health Risk Calculations - Dermal Contact with SedimentRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 6.2b Scenario


Adult IntakeFactor

(threshold)


Hazard Index(Adult)

Child IntakeFactor

(threshold)


Hazard Index(Child)



TOTAL 1.99E-05 3.19E-06

ChemicalSediment

Concentration

DermalAbsorption

Factor (DAF)




Scenario 6.2b

Health Risk Calculations - Incidental ingestion of surface water water during swimming in creeks and other surface water bodiesRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 6.2b Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 6.25E-03 7.35E-03





Scenario 6.2b

Health Risk Calculations - Dermal contact with surface water during swimming in creeks and other surface water bodiesRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 6.2b Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 5.00E-06 8.97E-07






Scenario 6.2b

Health Risk Calculations - Ingestion of Crustaceans and OsytersRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 6.2b Scenario


Adult IntakeFactor

(threshold)


Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.96E-03 1.20E-04

Chemical


Concentration





Scenario 6.2b

Health Risk Calculations - Ingestion of Cattle Muscle Tissue (Beef)RAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 6.2b Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 7.61E-03 1.76E-02

Chemical


Steer)


OralBioavailability

Factor



Scenario 6.2b

Health Risk Calculations - Incidental ingestion of surface water during irrigationRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 6.2b Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 2.20E-03 1.14E-03





Scenario 6.2b

Health Risk Calculations - Dermal contact with surface water during irrigationRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 6.2b Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 5.13E-06 7.16E-07






Scenario 6.2b

Summary of Estimated Health RisksRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 6.2b Scenario



SEDIMENT EXPOSURE PATHWAYSIncidental ingestion of sediment 3.4E-04 4.0E-04Dermal contact with sediment 2.0E-05 3.2E-06Incidental ingestion of sediment during recreational fishing (Scenario 1.2b) 5.1E-05 6.0E-05Dermal contact with sediment during recreational fishing (Scenario 1.2b) 3.0E-06 4.8E-07

SURFACE WATER EXPOSURE PATHWAYSIncidental ingestion of surface water during fishing (Scenario 1.2b) 4.9E-04 1.4E-04Incidental ingestion of surface water during boating - -Incidental ingestion of surface water during swimming in creeks/rivers 6.3E-03 7.4E-03Incidental ingestion of surface water during irrigation 2.2E-03 1.1E-03Dermal contact with surface water during fishing (Scenario 1.2b) 9.4E-07 7.4E-08Dermal contact with surface water during boating - -Dermal contact with surface water during swimming in creeks/rivers 5.0E-06 9.0E-07Dermal contact with surface water during irrigation 5.1E-06 7.2E-07


TOTAL 1.9E-02 2.8E-02


Scenario 6.2b


AECOM





Scenario 7a


Sediment(mg/kg)

SurfaceWater (mg/L)

Groundwater(mg/L)

Cattle Meat(mg/kg) Egg (mg/kg)

Site: RAAF Base Williamtown Perfluorooctane Sulfonate (PFOS) 0.00935 0.1052 0.004734 0.0014 modelled modelledAddress: RAAF Base Williamtown, NSW Perfluorooctanoic Acid (PFOA) 0 0 0.0006016 0.00009 modelled modelledClient: Department of Defence Perfluorohexane Sulphonate (PFHxS) 0 0.04 0.006105 0.00136 modelled modelledScenario: Scenario 7a Perfluorohexanoic Acid (PFHxA) 0 0.005 0.002065 0.00059 modelled modelled





















































Ingestion of finfish

Ingestion of crustraceans and oysters

x Ingestion of beef

Ingestion of lamb

Ingestion of rabbit





Soil (mg/kg)






Scenario 7a

Calculation of Surface Loading on Floors Following CleaningRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 7a Scenario


Floor Area m2


Water (C)


Surfaceloading on

floor

mg/L L/cm2 mg/cm2


Chemical

10.0

1.25



Scenario 7a

Calculation of Concentrations in Cattle Meat (Steer) Based on Environmental ConcentrationsRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 7a Scenario







SoilConcentration

(Cs)


(Cp)



(CDIlivestock)


Beef SteerVolume of

Distribution(Vd)




Serum Ratio(TSR)





Chemical



Scenario 7a

Calculation of Contaminant Concentrations in EggsRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 7a Scenario








L/day 0.61 CCME (1999)




SoilConcentration



(Cw)





Chemical



Scenario 7a

Health Risk Calculations - Incidental Soil IngestionRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 7a Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 4.31E-04 3.35E-03



Factor



Scenario 7a

Health Risk Calculations - Dermal Contact with SoilRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 7a Scenario


Adult IntakeFactor

(threshold)


Hazard Index(Adult)

Child IntakeFactor

(threshold)


Hazard Index(Child)



TOTAL 3.85E-05 5.36E-05



DermalAbsorption

Factor (DAF)



Scenario 7a

Health Risk Calculations - Inhalation of Soil-Derived Dust (Particulates) in Indoor AirRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 7a Scenario





Hazard Index(Adult)




Hazard Index(Child)



TOTAL 8.03E-07 8.03E-07




Surface Soil)



Scenario 7a

Health Risk Calculations - Inhalation of Soil-Derived Dust (Particulates) in Outdoor AirRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 7a Scenario



(threshold)



Hazard Index(Adult)




Hazard Index(Child)



TOTAL 2.88E-10 2.88E-10







Scenario 7a

Health Risk Calculations - Incidental ingestion of groundwater during showering/bathingRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 7a Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 6.42E-02 3.60E-01





Scenario 7a

Health Risk Calculations - Dermal contact with groundwater during showering/bathingRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 7a Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.03E-05 1.46E-05






Scenario 7a

Health Risk Calculations - Incidental ingestion of groundwater during food preparation and cleanupRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 7a Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 8.22E-03





Scenario 7a

Health Risk Calculations - Dermal contact with groundwater during food preparation and cleanupRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 7a Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 3.95E-06






Scenario 7a

Health Risk Calculations - Incidental ingestion of groundwater during domestic laundryRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 7a Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 3.08E-03





Scenario 7a

Health Risk Calculations - Dermal contact with groundwater during domestic laundryRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 7a Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.48E-06






Scenario 7a

Health Risk Calculations - Dermal Contact with residues in clothes after washing with groundwaterRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 7a Scenario

Oral RfD(Background

Corrected)



Hazard Index(Adult)



Hazard Index(Child)



TOTAL 7.81E-05 5.31E-04



Water






Scenario 7a

Health Risk Calculations - Incidental ingestion of groundwater during household cleaningRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 7a Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.07E-03 5.01E-03





Scenario 7a

Health Risk Calculations - Dermal contact with groundwater during household cleaningRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 7a Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 5.15E-07 6.72E-07






Scenario 7a

Health Risk Calculations - Incidental Ingestion via Hand to Mouth Transfer of Residues on Floors After CleaningRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 7a Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 3.10E-02

Chemical






Scenario 7a

Health Risk Calculations - Dermal Contact with residues on floors after cleaningRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 7a Scenario


Adult IntakeFactor

(threshold)


Hazard Index(Adult)



Hazard Index(Child)



TOTAL 5.21E-04

Chemical


in Water



factor



Scenario 7a

Health Risk Calculations - Incidental ingestion of groundwater during sprinkler playRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 7a Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 2.74E-02 1.43E-01





Scenario 7a

Health Risk Calculations - Dermal contact with groundwater during sprinkler playRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 7a Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 8.78E-06 1.16E-05






Scenario 7a

Health Risk Calculations - Incidental ingestion of groundwater during washing of animalsRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 7a Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 9.66E-03 2.50E-03





Scenario 7a

Health Risk Calculations - Dermal contact with groundwater during washing of animalsRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 7a Scenario


Adult IntakeFactor

(threshold)


Hazard Index(Adult)

Child IntakeFactor

(threshold)


Hazard Index(Child)



TOTAL 1.35E-05 9.43E-07






Scenario 7a

Health Risk Calculations - Incidental Ingestion via Hand to Mouth Transfer of Residues on Animals after washing with groundwaterRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 7a Scenario








Hazard Index(Adult)



Hazard Index(Child)



TOTAL 2.43E-02 8.91E-03

Chemical


Water



Factor



Scenario 7a



Adult IntakeFactor

(threshold)


Hazard Index(Adult)

Child IntakeFactor

(threshold)


Hazard Index(Child)



TOTAL 9.35E-04 5.40E-03

Chemical


Water

DermalAbsorption

factor





Scenario 7a





Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.61E-03





Scenario 7a

Health Risk Calculations - Dermal contact with groundwater during washing of vehiclesRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 7a Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 2.25E-06






Scenario 7a

Health Risk Calculations - Incidental ingestion of groundwater during irrigationRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 7a Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.13E-02 5.86E-03





Scenario 7a

Health Risk Calculations - Dermal contact with groundwater during irrigationRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 7a Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.58E-05 2.21E-06






Scenario 7a

Health Risk Calculations - Incidental ingestion of groundwater used in home swimming poolsRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 7a Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.58E-01 3.57E-01





Scenario 7a

Health Risk Calculations - Dermal contact with groundwater used in home swimming poolsRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 7a Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 2.53E-05 1.45E-05






Scenario 7a

Health Risk Calculations - Incidental Sediment IngestionRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 7a Scenario




Hazard Index(Adult)



Hazard Index(Child)


Perfluorooctane Sulfonate (PFOS) 0.1052 1.00E+00 1.86E-05 2.44E-07 2.57E-08 1.38E-03 4.75E-07 5.00E-08 2.69E-03Perfluorooctanoic Acid (PFOA) 1.00E+00 1.59E-04 2.44E-07 4.75E-07Perfluorohexane Sulphonate (PFHxS) 0.04 1.00E+00 2.00E-05 2.44E-07 9.77E-09 4.88E-04 4.75E-07 1.90E-08 9.50E-04Perfluorohexanoic Acid (PFHxA) 0.005 1.00E+00 1.00E-01 2.44E-07 1.22E-09 1.22E-08 4.75E-07 2.37E-09 2.37E-08

TOTAL 1.87E-03 3.64E-03

ChemicalSediment






Scenario 7a

Health Risk Calculations - Dermal Contact with SedimentRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 7a Scenario


Adult IntakeFactor

(threshold)


Hazard Index(Adult)

Child IntakeFactor

(threshold)


Hazard Index(Child)


Perfluorooctane Sulfonate (PFOS) 0.1052 0.0005 1.86E-05 1.34E-08 1.40E-09 7.55E-05 3.84E-09 4.04E-10 2.17E-05Perfluorooctanoic Acid (PFOA) 0.0005 1.59E-04 1.34E-08 3.84E-09Perfluorohexane Sulphonate (PFHxS) 0.04 0.0005 2.00E-05 1.34E-08 5.34E-10 2.67E-05 3.84E-09 1.54E-10 7.69E-06Perfluorohexanoic Acid (PFHxA) 0.005 0.0005 1.00E-01 1.34E-08 6.68E-11 6.68E-10 3.84E-09 1.92E-11 1.92E-10

TOTAL 1.02E-04 2.94E-05

ChemicalSediment

Concentration

DermalAbsorption

Factor (DAF)




Scenario 7a

Health Risk Calculations - Incidental ingestion of surface water water during swimming in creeks and other surface water bodiesRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 7a Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 6.20E-01 1.61E+00





Scenario 7a

Health Risk Calculations - Dermal contact with surface water during swimming in creeks and other surface water bodiesRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 7a Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 9.93E-05 6.53E-05






Scenario 7a

Health Risk Calculations - Ingestion of EggsRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 7a Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 9.18E-01 3.36E+00





Scenario 7a

Health Risk Calculations - Ingestion of Cattle Muscle Tissue (Beef)RAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 7a Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 8.21E-02 1.93E-01

Chemical


Steer)


OralBioavailability

Factor



Scenario 7a

Summary of Estimated Health RisksRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 7a Scenario




GROUNDWATER EXPOSURE PATHWAYSIngestion of Potable Groundwater - -Inhalation of Groundwater-Derived Vapours in Indoor Air - -Inhalation of Groundwater-Derived Vapours in Outdoor Air - -Inhalation of Groundwater Vapours (Where GW Enters Trench) - -Inhalation of Groundwater Derived Vapours from Shower/ Irrigation - -Vapours from Flowing Water - -Incidental Ingestion of Groundwater (Bathing or Excavation) - -Dermal Contact with Groundwater (Bathing or Excavation) - -Incidental ingestion of groundwater during showering/bathing 6.4E-02 3.6E-01Incidental ingestion of groundwater during food preparation and cleanup 8.2E-03 -Incidental ingestion of groundwater during domestic laundry 3.1E-03 -Incidental ingestion of groundwater during household cleaning 1.1E-03 5.0E-03Incidental ingestion of groundwater during sprinkler play 2.7E-02 1.4E-01Incidental ingestion of groundwater during washing of animals 9.7E-03 2.5E-03Incidental ingestion of groundwater during washing of vehicles 1.6E-03 -Incidental ingestion of groundwater during irrigation 1.1E-02 5.9E-03Incidental ingestion of groundwater used in home swimming pools 1.6E-01 3.6E-01Dermal contact with groundwater during showering/bathing 1.0E-05 1.5E-05Dermal contact with groundwater during food preparation and cleanup 3.9E-06 -Dermal contact with groundwater during domestic laundry 1.5E-06 -Dermal contact with groundwater residues after washing clothes 7.8E-05 5.3E-04Dermal contact with groundwater during household cleaning 5.2E-07 6.7E-07Incidental ingestion of groundwater residues after washing floors - 3.1E-02Dermal contact with groundwater residues after washing floors - 5.2E-04Dermal contact with groundwater during sprinkler play 8.8E-06 1.2E-05Dermal contact with groundwater during washing of animals 1.4E-05 9.4E-07Dermal contact with groundwater during washing of vehicles 2.3E-06 -Dermal contact with groundwater during irrigation 1.6E-05 2.2E-06Dermal contact with groundwater residues after washing companion animals 9.3E-04 5.4E-03Incidental ingestion of groundwater residues after washing companion animals 2.4E-02 8.9E-03Dermal contact with groundwater used in home swimming pools 2.5E-05 1.5E-05

SURFACE WATER EXPOSURE PATHWAYSIncidental ingestion of surface water during fishing - -Incidental ingestion of surface water during boating - -Incidental ingestion of surface water during swimming in creeks/rivers 6.2E-01 1.6E+00Dermal contact with surface water during fishing - -Dermal contact with surface water during boating - -Dermal contact with surface water during swimming in creeks/rivers 9.9E-05 6.5E-05

DIETARY EXPOSURE PATHWAYSIngestion of finfish from the Site - -Ingestion of breast milk by infants - -Ingestion of home grown beef 8.2E-02 1.9E-01Ingestion of home grown livestock milk - -Ingestion of home grown eggs 9.2E-01 3.4E+00Ingestion of home grown fruit - -Ingestion of home grown green vegetables - -Ingestion of home grown lamb - -Ingestion of rabbit meat - -Ingestion of crustaceans and oysters - -

TOTAL 1.93E+00 6.09E+00


Scenario 7a



Scenario 7b


Sediment(mg/kg)

SurfaceWater (mg/L)

Groundwater(mg/L)

Cattle Meat(mg/kg) Egg (mg/kg)

Site: RAAF Base Williamtown Perfluorooctane Sulfonate (PFOS) 0.00419 0.0501 0.001724 0.000358 modelled modelledAddress: RAAF Base Williamtown, NSW Perfluorooctanoic Acid (PFOA) 0 0.000123 0.0000658 modelled modelledClient: Department of Defence Perfluorohexane Sulphonate (PFHxS) 0 0.0139 0.003045 0.00028 modelled modelledScenario: Scenario 7b Perfluorohexanoic Acid (PFHxA) 0 0.00231 0.00099 0.00059 modelled modelled























































x Ingestion of beef

Ingestion of lamb

Ingestion of rabbit





Soil (mg/kg)






Scenario 7b

Calculation of Surface Loading on Floors Following CleaningRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 7b Scenario


Floor Area m2


Water (C)


Surfaceloading on

floor

mg/L L/cm2 mg/cm2


Chemical

10.0

1.25



Scenario 7b

Calculation of Concentrations in Cattle Meat (Steer) Based on Environmental ConcentrationsRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 7b Scenario







SoilConcentration

(Cs)


(Cp)



(CDIlivestock)


Beef SteerVolume of

Distribution(Vd)




Serum Ratio(TSR)





Chemical



Scenario 7b

Calculation of Contaminant Concentrations in EggsRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 7b Scenario








L/day 0.61 CCME (1999)




SoilConcentration



(Cw)





Chemical



Scenario 7b

Health Risk Calculations - Incidental Soil IngestionRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 7b Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.61E-04 7.51E-04



Factor



Scenario 7b

Health Risk Calculations - Dermal Contact with SoilRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 7b Scenario


Adult IntakeFactor

(threshold)


Hazard Index(Adult)

Child IntakeFactor

(threshold)


Hazard Index(Child)



TOTAL 5.07E-06 7.07E-06



DermalAbsorption

Factor (DAF)



Scenario 7b

Health Risk Calculations - Inhalation of Soil-Derived Dust (Particulates) in Indoor AirRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 7b Scenario





Hazard Index(Adult)




Hazard Index(Child)



TOTAL 3.60E-07 2.93E-07




Surface Soil)



Scenario 7b

Health Risk Calculations - Inhalation of Soil-Derived Dust (Particulates) in Outdoor AirRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 7b Scenario



(threshold)



Hazard Index(Adult)




Hazard Index(Child)



TOTAL 9.68E-11 6.45E-11







Scenario 7b

Health Risk Calculations - Incidental ingestion of groundwater during showering/bathingRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 7b Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 9.62E-04 8.98E-03





Scenario 7b

Health Risk Calculations - Dermal contact with groundwater during showering/bathingRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 7b Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 7.70E-07 1.10E-06






Scenario 7b

Health Risk Calculations - Incidental ingestion of groundwater during food preparation and cleanupRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 7b Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 5.77E-04





Scenario 7b

Health Risk Calculations - Dermal contact with groundwater during food preparation and cleanupRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 7b Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 4.62E-07






Scenario 7b

Health Risk Calculations - Incidental ingestion of groundwater during domestic laundryRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 7b Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 6.17E-05





Scenario 7b

Health Risk Calculations - Dermal contact with groundwater during domestic laundryRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 7b Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 4.93E-08






Scenario 7b

Health Risk Calculations - Dermal Contact with residues in clothes after washing with groundwaterRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 7b Scenario

Oral RfD(Background

Corrected)



Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.83E-05 4.97E-05



Water






Scenario 7b

Health Risk Calculations - Incidental ingestion of groundwater during household cleaningRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 7b Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 3.77E-05 1.76E-04





Scenario 7b

Health Risk Calculations - Dermal contact with groundwater during household cleaningRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 7b Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 3.01E-08 3.93E-08






Scenario 7b

Health Risk Calculations - Incidental Ingestion via Hand to Mouth Transfer of Residues on Floors After CleaningRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 7b Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.15E-03

Chemical






Scenario 7b

Health Risk Calculations - Dermal Contact with residues on floors after cleaningRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 7b Scenario


Adult IntakeFactor

(threshold)


Hazard Index(Adult)



Hazard Index(Child)



TOTAL 2.44E-05

Chemical


in Water



factor



Scenario 7b

Health Risk Calculations - Incidental ingestion of groundwater during sprinkler playRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 7b Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 2.14E-04 3.57E-03





Scenario 7b

Health Risk Calculations - Dermal contact with groundwater during sprinkler playRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 7b Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 3.43E-07 8.70E-07






Scenario 7b

Health Risk Calculations - Incidental ingestion of groundwater during washing of animalsRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 7b Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 7.54E-05 5.86E-05





Scenario 7b

Health Risk Calculations - Dermal contact with groundwater during washing of animalsRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 7b Scenario


Adult IntakeFactor

(threshold)


Hazard Index(Adult)

Child IntakeFactor

(threshold)


Hazard Index(Child)



TOTAL 1.76E-07 3.68E-08






Scenario 7b

Health Risk Calculations - Incidental Ingestion via Hand to Mouth Transfer of Residues on Animals after washing with groundwaterRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 7b Scenario








Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.68E-03 4.36E-04

Chemical


Water



Factor



Scenario 7b



Adult IntakeFactor

(threshold)


Hazard Index(Adult)

Child IntakeFactor

(threshold)


Hazard Index(Child)



TOTAL 6.74E-05 2.20E-04

Chemical


Water

DermalAbsorption

factor





Scenario 7b





Hazard Index(Adult)



Hazard Index(Child)



TOTAL 3.77E-05





Scenario 7b

Health Risk Calculations - Dermal contact with groundwater during washing of vehiclesRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 7b Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 8.79E-08






Scenario 7b

Health Risk Calculations - Incidental ingestion of groundwater during irrigationRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 7b Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 3.01E-04 1.56E-04





Scenario 7b

Health Risk Calculations - Dermal contact with groundwater during irrigationRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 7b Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 7.03E-07 9.81E-08






Scenario 7b

Health Risk Calculations - Incidental ingestion of groundwater used in home swimming poolsRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 7b Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 8.56E-04 7.13E-03





Scenario 7b

Health Risk Calculations - Dermal contact with groundwater used in home swimming poolsRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 7b Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 6.85E-07 8.70E-07






Scenario 7b

Health Risk Calculations - Incidental Sediment IngestionRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 7b Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 3.45E-04 4.02E-04

ChemicalSediment






Scenario 7b

Health Risk Calculations - Dermal Contact with SedimentRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 7b Scenario


Adult IntakeFactor

(threshold)


Hazard Index(Adult)

Child IntakeFactor

(threshold)


Hazard Index(Child)



TOTAL 1.99E-05 3.19E-06

ChemicalSediment

Concentration

DermalAbsorption

Factor (DAF)




Scenario 7b

Health Risk Calculations - Incidental ingestion of surface water water during swimming in creeks and other surface water bodiesRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 7b Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 6.25E-03 7.35E-03





Scenario 7b

Health Risk Calculations - Dermal contact with surface water during swimming in creeks and other surface water bodiesRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 7b Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 5.00E-06 8.97E-07






Scenario 7b

Health Risk Calculations - Ingestion of EggsRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 7b Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.60E-01 3.72E-01





Scenario 7b

Health Risk Calculations - Ingestion of Cattle Muscle Tissue (Beef)RAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 7b Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 7.61E-03 1.76E-02

Chemical


Steer)


OralBioavailability

Factor



Scenario 7b

Summary of Estimated Health RisksRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 7b Scenario





SURFACE WATER EXPOSURE PATHWAYSIncidental ingestion of surface water during fishing - -Incidental ingestion of surface water during boating - -Incidental ingestion of surface water during swimming in creeks/rivers 6.3E-03 7.4E-03Dermal contact with surface water during fishing - -Dermal contact with surface water during boating - -Dermal contact with surface water during swimming in creeks/rivers 5.0E-06 9.0E-07

DIETARY EXPOSURE PATHWAYSIngestion of finfish from the Site - -Ingestion of breast milk by infants - -Ingestion of home grown beef 7.6E-03 1.8E-02Ingestion of home grown livestock milk - -Ingestion of home grown eggs 1.6E-01 3.7E-01Ingestion of home grown fruit - -Ingestion of home grown green vegetables - -Ingestion of home grown lamb - -Ingestion of rabbit meat - -Ingestion of crustaceans and oysters - -

TOTAL 1.79E-01 4.20E-01


Scenario 7b


AECOM


Scenario 8 and 9Stage 2B Investigation AreaRisk Estimates



Scenario 8a and Scenario 9a


Sediment(mg/kg)

SurfaceWater (mg/L)

Finfish(mg/kg)


(mg/kg)

Site: RAAF Base Williamtown Perfluorooctane Sulfonate (PFOS) 0.013 0.00373 0.00225 0.0022Address: RAAF Base Williamtown, NSW Perfluorooctanoic Acid (PFOA) 0.00008 0.0003Client: Department of Defence Perfluorohexane Sulphonate (PFHxS) 0.00347Scenario: Scenario 8a and 9a Perfluorohexanoic Acid (PFHxA) 0.0007


Incidental ingestion of soil

Dermal contact with soil

Inhalation of surface soil-derived dust in indoor air

Inhalation of surface soil-derived dust in outdoor air


















































Ingestion of beef

Ingestion of lamb

Ingestion of rabbit




General Information: Exposure Point Concentrations

Receptor:Commercial fishing workerExposure Assumptions:Reasonable Maximum Exposure





Health Risk Calculations - Ingestion of FinfishRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 8a and 9a Scenario


Adult IntakeFactor

(threshold)


Hazard Index(Adult)



Hazard Index(Child)


Perfluorooctane Sulfonate (PFOS) 0.00225 1.00E+00 1.86E-05 3.64E-03 8.20E-06 4.41E-01 1.47E-02 3.30E-05 1.77E+00Perfluorooctanoic Acid (PFOA) - - - - - - - - -Perfluorohexane Sulphonate (PFHxS) - - - - - - - - -Perfluorohexanoic Acid (PFHxA) - - - - - - - - -

TOTAL 4.41E-01 1.77E+00

ChemicalFish


Factor





Health Risk Calculations - Incidental Sediment IngestionRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 8a and 9a Scenario




Hazard Index(Adult)



Hazard Index(Child)


Perfluorooctane Sulfonate (PFOS) 0.013 1.00E+00 1.86E-05 8.57E-07 1.11E-08 5.99E-04 - -Perfluorooctanoic Acid (PFOA) - - - - - - - - -Perfluorohexane Sulphonate (PFHxS) - - - - - - - - -Perfluorohexanoic Acid (PFHxA) - - - - - - - - -

TOTAL 5.99E-04

ChemicalSediment







Health Risk Calculations - Dermal Contact with SedimentRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 8a and 9a Scenario


Adult IntakeFactor

(threshold)


Hazard Index(Adult)

Child IntakeFactor

(threshold)


Hazard Index(Child)


Perfluorooctane Sulfonate (PFOS) 0.013 0.0005 1.86E-05 4.36E-08 5.66E-10 3.05E-05 - -Perfluorooctanoic Acid (PFOA) - - - - - - - -Perfluorohexane Sulphonate (PFHxS) - - - - - - - - -Perfluorohexanoic Acid (PFHxA) - - - - - - - - -

TOTAL 3.05E-05

ChemicalSediment

Concentration

DermalAbsorption

Factor (DAF)





Health Risk Calculations - Dermal contact with surface water during fishingRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 8a and 9a Scenario




Hazard Index(Adult)



Hazard Index(Child)



- - - - - - - - -

TOTAL 2.61E-04







Health Risk Calculations - Incidental ingestion of surface water water during fishingRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 8a and 9a Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 4.62E-01






Health Risk Calculations - Ingestion of Crustaceans and OsytersRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 8a and 9a Scenario


Adult IntakeFactor

(threshold)


Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.16E-01 1.31E-01

Chemical


Concentration






Summary of Estimated Health RisksRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 8a and 9a Scenario

Adult Exposure Childhood Exposure Adult Exposure Childhood Exposure

SOIL EXPOSURE PATHWAYS (Scenario 1.2a)Incidental Ingestion of Soil 4.3E-04 3.4E-03 - -Dermal Contact with Soil 3.8E-05 5.4E-05 - -Inhalation of Surface Soil-Derived Dust in Indoor Air 8.0E-07 8.0E-07 - -Inhalation of Surface Soil-Derived Dust in Outdoor Air 2.9E-10 2.9E-10 - -Inhalation of Surface Soil-Derived Vapours in Outdoor Air - - - -Inhalation of Surface Soil-Derived Vapours from Excavation - - - -Inhalation of Subsurface Soil-Derived Vapours in Indoor Air - - - -Inhalation of Subsurface Soil-Derived Vapours in Outdoor Air - - - -

SEDIMENT EXPOSURE PATHWAYSIncidental ingestion of sediment during fishing 6.0E-04 - 6.0E-04 -Dermal contact with sediment during fishing 3.0E-05 - 3.0E-05 -

GROUNDWATER EXPOSURE PATHWAYS (Scenario 1.2a)Ingestion of Potable Groundwater - - - -Inhalation of Groundwater-Derived Vapours in Indoor Air - - - -Inhalation of Groundwater-Derived Vapours in Outdoor Air - - - -Inhalation of Groundwater Vapours (Where GW Enters Trench) - - - -Inhalation of Groundwater Derived Vapours from Shower/ Irrigation - - - -Vapours from Flowing Water - - - -Incidental Ingestion of Groundwater (Bathing or Excavation) - - - -Dermal Contact with Groundwater (Bathing or Excavation) - - - -Incidental ingestion of groundwater during showering/bathing 6.4E-02 3.6E-01 - -Incidental ingestion of groundwater during food preparation and cleanup 8.2E-03 - - -Incidental ingestion of groundwater during domestic laundry 3.1E-03 - - -Incidental ingestion of groundwater during household cleaning 1.1E-03 5.0E-03 - -Incidental ingestion of groundwater during sprinkler play 2.7E-02 1.4E-01 - -Incidental ingestion of groundwater during washing of animals 9.7E-03 2.5E-03 - -Incidental ingestion of groundwater during washing of vehicles 1.6E-03 - - -Incidental ingestion of groundwater during irrigation 1.1E-02 5.9E-03 - -Incidental ingestion of groundwater used in home swimming pools 1.6E-01 3.6E-01 - -Dermal contact with groundwater during showering/bathing 1.0E-05 1.5E-05 - -Dermal contact with groundwater during food preparation and cleanup 3.9E-06 - - -Dermal contact with groundwater during domestic laundry 1.5E-06 - - -Dermal contact with groundwater residues after washing clothes 7.8E-05 5.3E-04 - -Dermal contact with groundwater during household cleaning 5.2E-07 6.7E-07 - -Incidental ingestion of groundwater residues after washing floors - 3.1E-02 - -Dermal contact with groundwater residues after washing floors - 5.2E-04 - -Dermal contact with groundwater during sprinkler play 8.8E-06 1.2E-05 - -Dermal contact with groundwater during washing of animals 1.4E-05 9.4E-07 - -Dermal contact with groundwater during washing of vehicles 2.3E-06 - - -Dermal contact with groundwater during irrigation 1.6E-05 2.2E-06 - -Dermal contact with groundwater residues after washing companion animals 9.3E-04 5.4E-03 - -Incidental ingestion of groundwater residues after washing companion animals 2.4E-02 8.9E-03 - -Dermal contact with groundwater used in home swimming pools 2.5E-05 1.5E-05 - -

SURFACE WATER EXPOSURE PATHWAYSIncidental ingestion of surface water during fishing 4.6E-01 - 4.6E-01 -Incidental ingestion of surface water during boating - - - -Incidental ingestion of surface water during swimming in creeks/rivers - - - -Dermal contact with surface water during fishing 2.6E-04 - 2.6E-04 -Dermal contact with surface water during boating - - - -Dermal contact with surface water during swimming in creeks/rivers - - - -

DIETARY EXPOSURE PATHWAYSIngestion of finfish from the Site 4.4E-01 1.8E+00 4.4E-01 1.8E+00Ingestion of breast milk by infants - - - -Ingestion of home grown beef - - - -Ingestion of home grown livestock milk - - - -Ingestion of home grown eggs - - - -Ingestion of home grown fruit - - - -Ingestion of home grown green vegetables - - - -Ingestion of home grown lamb - - - -Ingestion of rabbit meat - - - -Ingestion of crustaceans and oysters 1.2E-01 1.3E-01 1.2E-01 1.3E-01

TOTAL 1.33E+00 2.83E+00 1.02E+00 1.91E+00


Scenario 9aScenario 8a




Scenario 8b and 9b


Sediment(mg/kg)

SurfaceWater (mg/L)

Finfish(mg/kg)


(mg/kg)

Site: RAAF Base Williamtown Perfluorooctane Sulfonate (PFOS) 0.0094 0.001581 0.00225 0.0022Address: RAAF Base Williamtown, NSW Perfluorooctanoic Acid (PFOA) 0.000376 0.0003Client: Department of Defence Perfluorohexane Sulphonate (PFHxS) 0.002439Scenario: Scenario 8b and 9b Perfluorohexanoic Acid (PFHxA) 0.000342























































Ingestion of beef

Ingestion of lamb

Ingestion of rabbit





Receptor:Commercial fishing workerExposure Assumptions:Average Exposure




Scenario 8b and 9b

Health Risk Calculations - Ingestion of FinfishRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 8b and 9b Scenario


Adult IntakeFactor

(threshold)


Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.13E-01 2.65E-01

ChemicalFish


Factor




Scenario 8b and 9b

Health Risk Calculations - Incidental Sediment IngestionRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 8b and 9b Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 2.37E-04

ChemicalSediment






Scenario 8b and 9b

Health Risk Calculations - Dermal Contact with SedimentRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 8b and 9b Scenario


Adult IntakeFactor

(threshold)


Hazard Index(Adult)

Child IntakeFactor

(threshold)


Hazard Index(Child)



TOTAL 1.27E-05

ChemicalSediment

Concentration

DermalAbsorption

Factor (DAF)




Scenario 8b and 9b

Health Risk Calculations - Dermal contact with surface water during fishingRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 8b and 9b Scenario




Hazard Index(Adult)



Hazard Index(Child)



- - - - - - - - -

TOTAL 9.59E-05






Scenario 8b and 9b

Health Risk Calculations - Incidental ingestion of surface water water during fishingRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 8b and 9b Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 5.66E-02





Scenario 8b and 9b

Health Risk Calculations - Ingestion of Crustaceans and OsytersRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 8b and 9b Scenario


Adult IntakeFactor

(threshold)


Hazard Index(Adult)



Hazard Index(Child)



TOTAL 5.63E-02 3.04E-02

Chemical


Concentration





Scenario 8b and 9b

Summary of Estimated Health RisksRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 8b and 9b Scenario

Adult Exposure Childhood Exposure Adult Exposure Childhood Exposure

SOIL EXPOSURE PATHWAYS (Scenario 1.2b)Incidental Ingestion of Soil 1.6E-04 7.5E-04 - -Dermal Contact with Soil 5.1E-06 7.1E-06 - -Inhalation of Surface Soil-Derived Dust in Indoor Air 3.6E-07 2.9E-07 - -Inhalation of Surface Soil-Derived Dust in Outdoor Air 9.7E-11 6.5E-11 - -Inhalation of Surface Soil-Derived Vapours in Outdoor Air - - - -Inhalation of Surface Soil-Derived Vapours from Excavation - - - -Inhalation of Subsurface Soil-Derived Vapours in Indoor Air - - - -Inhalation of Subsurface Soil-Derived Vapours in Outdoor Air - - - -

SEDIMENT EXPOSURE PATHWAYSIncidental ingestion of sediment during fishing 2.4E-04 - 2.4E-04 -Dermal contact with sediment during fishing 1.3E-05 - 1.3E-05 -

GROUNDWATER EXPOSURE PATHWAYS (Scenario 1.2b)Ingestion of Potable Groundwater - - - -Inhalation of Groundwater-Derived Vapours in Indoor Air - - - -Inhalation of Groundwater-Derived Vapours in Outdoor Air - - - -Inhalation of Groundwater Vapours (Where GW Enters Trench) - - - -Inhalation of Groundwater Derived Vapours from Shower/ Irrigation - - - -Vapours from Flowing Water - - - -Incidental Ingestion of Groundwater (Bathing or Excavation) - - - -Dermal Contact with Groundwater (Bathing or Excavation) - - - -Incidental ingestion of groundwater during showering/bathing 9.6E-04 9.0E-03 - -Incidental ingestion of groundwater during food preparation and cleanup 5.8E-04 - - -Incidental ingestion of groundwater during domestic laundry 6.2E-05 - - -Incidental ingestion of groundwater during household cleaning 3.8E-05 1.8E-04 - -Incidental ingestion of groundwater during sprinkler play 2.1E-04 3.6E-03 - -Incidental ingestion of groundwater during washing of animals 7.5E-05 5.9E-05 - -Incidental ingestion of groundwater during washing of vehicles 3.8E-05 - - -Incidental ingestion of groundwater during irrigation 3.0E-04 1.6E-04 - -Incidental ingestion of groundwater used in home swimming pools 8.6E-04 7.1E-03 - -Dermal contact with groundwater during showering/bathing 7.7E-07 1.1E-06 - -Dermal contact with groundwater during food preparation and cleanup 4.6E-07 - - -Dermal contact with groundwater during domestic laundry 4.9E-08 - - -Dermal contact with groundwater residues after washing clothes 1.8E-05 5.0E-05 - -Dermal contact with groundwater during household cleaning 3.0E-08 3.9E-08 - -Incidental ingestion of groundwater residues after washing floors - 1.2E-03 - -Dermal contact with groundwater residues after washing floors - 2.4E-05 - -Dermal contact with groundwater during sprinkler play 3.4E-07 8.7E-07 - -Dermal contact with groundwater during washing of animals 1.8E-07 3.7E-08 - -Dermal contact with groundwater during washing of vehicles 8.8E-08 - - -Dermal contact with groundwater during irrigation 7.0E-07 9.8E-08 - -Dermal contact with groundwater residues after washing companion animals 6.7E-05 2.2E-04 - -Incidental ingestion of groundwater residues after washing companion animals 1.7E-03 4.4E-04 - -Dermal contact with groundwater used in home swimming pools 6.9E-07 8.7E-07 - -

SURFACE WATER EXPOSURE PATHWAYSIncidental ingestion of surface water during fishing 5.7E-02 - 5.7E-02 -Incidental ingestion of surface water during boating - - - -Incidental ingestion of surface water during swimming in creeks/rivers - - - -Dermal contact with surface water during fishing 9.6E-05 - 9.6E-05 -Dermal contact with surface water during boating - - - -Dermal contact with surface water during swimming in creeks/rivers - - - -

DIETARY EXPOSURE PATHWAYSIngestion of finfish from the Site 1.1E-01 2.6E-01 1.1E-01 2.6E-01Ingestion of breast milk by infants - - - -Ingestion of home grown beef - - - -Ingestion of home grown livestock milk - - - -Ingestion of home grown eggs - - - -Ingestion of home grown fruit - - - -Ingestion of home grown green vegetables - - - -Ingestion of home grown lamb - - - -Ingestion of rabbit meat - - - -Ingestion of crustaceans and oysters 5.6E-02 3.0E-02 5.6E-02 3.0E-02

TOTAL 2.32E-01 3.18E-01 2.26E-01 2.95E-01


Scenario 9bScenario 8b



AECOM





Scenario 10a


Sediment(mg/kg)

SurfaceWater (mg/L)

Site: RAAF Base Williamtown Perfluorooctane Sulfonate (PFOS) 0.013 0.00373Address: RAAF Base Williamtown, NSW Perfluorooctanoic Acid (PFOA) 0.00008Client: Department of Defence Perfluorohexane Sulphonate (PFHxS) 0.00347Scenario: Scenario 10a Perfluorohexanoic Acid (PFHxA) 0.0007
















































x Incidental ingestion of surface water during boating

x Dermal contact with surface water during boating






Ingestion of beef

Ingestion of lamb

Ingestion of rabbit




General Information: Exposure PointConcentrations

Receptor:RecreationalExposure Assumptions:Reasonable Maximum Exposure




Scenario 10a





Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.71E-04 3.32E-04

ChemicalSediment






Scenario 10a



Adult IntakeFactor

(threshold)


Hazard Index(Adult)

Child IntakeFactor

(threshold)


Hazard Index(Child)



TOTAL 9.33E-06 2.69E-06

ChemicalSediment

Concentration

DermalAbsorption

Factor (DAF)




Scenario 10a

Health Risk Calculations - Incidental ingestion of surface water water during boatingRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 10a Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 2.50E-02 1.17E-01





Scenario 10a

Health Risk Calculations - Dermal contact with surface water during boatingRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 10a Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 4.47E-05 6.37E-05






Scenario 10a





Hazard Index(Adult)



Hazard Index(Child)



TOTAL 4.12E-01 1.07E+00





Scenario 10a





Hazard Index(Adult)



Hazard Index(Child)



TOTAL 6.60E-05 4.34E-05






Scenario 10a




SURFACE WATER EXPOSURE PATHWAYSIncidental ingestion of surface water during fishing - -Incidental ingestion of surface water during boating 2.5E-02 1.2E-01Incidental ingestion of surface water during swimming in creeks/rivers 4.1E-01 1.1E+00Dermal contact with surface water during fishing - -Dermal contact with surface water during boating 4.5E-05 6.4E-05Dermal contact with surface water during swimming in creeks/rivers 6.6E-05 4.3E-05

TOTAL 4.38E-01 1.18E+00


Scenario 10a



Scenario 10b


Sediment(mg/kg)

SurfaceWater (mg/L)

Site: RAAF Base Williamtown Perfluorooctane Sulfonate (PFOS) 0.0094 0.001581Address: RAAF Base Williamtown, NSW Perfluorooctanoic Acid (PFOA) 0.000376Client: Department of Defence Perfluorohexane Sulphonate (PFHxS) 0.002439Scenario: Scenario 10b Perfluorohexanoic Acid (PFHxA) 0.000342
















































x Incidental ingestion of surface water during boating

x Dermal contact with surface water during boating






Ingestion of beef

Ingestion of lamb

Ingestion of rabbit




General Information: Exposure PointConcentrations

Receptor:RecreationalExposure Assumptions:Average Exposure




Scenario 10b





Hazard Index(Adult)



Hazard Index(Child)



TOTAL 5.14E-05 6.00E-05

ChemicalSediment






Scenario 10b



Adult IntakeFactor

(threshold)


Hazard Index(Adult)

Child IntakeFactor

(threshold)


Hazard Index(Child)



TOTAL 2.97E-06 4.76E-07

ChemicalSediment

Concentration

DermalAbsorption

Factor (DAF)




Scenario 10b

Health Risk Calculations - Incidental ingestion of surface water water during boatingRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 10b Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 4.99E-04 2.33E-03





Scenario 10b

Health Risk Calculations - Dermal contact with surface water during boatingRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 10b Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.20E-06 1.39E-06






Scenario 10b





Hazard Index(Adult)



Hazard Index(Child)



TOTAL 5.33E-03 6.26E-03





Scenario 10b





Hazard Index(Adult)



Hazard Index(Child)



TOTAL 4.26E-06 7.64E-07






Scenario 10b




SURFACE WATER EXPOSURE PATHWAYSIncidental ingestion of surface water during fishing - -Incidental ingestion of surface water during boating 5.0E-04 2.3E-03Incidental ingestion of surface water during swimming in creeks/rivers 5.3E-03 6.3E-03Dermal contact with surface water during fishing - -Dermal contact with surface water during boating 1.2E-06 1.4E-06Dermal contact with surface water during swimming in creeks/rivers 4.3E-06 7.6E-07

TOTAL 5.88E-03 8.66E-03


Scenario 10b


AECOM





Scenario 11a


Sediment(mg/kg)

Surface Water(mg/L)

Site: RAAF Base Williamtown Perfluorooctane Sulfonate (PFOS) 0.00935 0.1052 0.004734Address: RAAF Base Williamtown, NSW Perfluorooctanoic Acid (PFOA) 0.0006016Client: Department of Defence Perfluorohexane Sulphonate (PFHxS) 0.04 0.006105Scenario: Scenario 11a Perfluorohexanoic Acid (PFHxA) 0.005 0.002065

Council Worker























































Ingestion of beef

Ingestion of lamb

Ingestion of rabbit





Soil (mg/kg)


Receptor:

Exposure Assumptions:Reasonable Maximum Exposure




Scenario 11a





Hazard Index(Adult)

(mg/kg) (unitless) (mg/kg/day) (kg/kg/day) (mg/kg/day) (unitless)

Perfluorooctane Sulfonate (PFOS) 0.00935 1.00E+00 1.86E-05 3.10E-06 2.90E-08 1.56E-03Perfluorooctanoic Acid (PFOA) - - - - - -Perfluorohexane Sulphonate (PFHxS) - - - - - -Perfluorohexanoic Acid (PFHxA) - - - - - -

TOTAL 1.56E-03



Factor



Scenario 11a



Adult IntakeFactor

(threshold)


Hazard Index(Adult)

Child IntakeFactor

(threshold)


Hazard Index(Child)


Perfluorooctane Sulfonate (PFOS) 0.00935 0.0005 1.86E-05 6.61E-08 6.18E-10 3.32E-05 - - -Perfluorooctanoic Acid (PFOA) - - - - - - - - -Perfluorohexane Sulphonate (PFHxS) - - - - - - - - -Perfluorohexanoic Acid (PFHxA) - - - - - - - - -

TOTAL 3.32E-05



DermalAbsorption

Factor (DAF)



Scenario 11a




(threshold)



Hazard Index(Adult)




Hazard Index(Child)


Perfluorooctane Sulfonate (PFOS) 0.00935 3.85E-08 7.00E-05 3.16E-09 2.96E-11 4.22E-07 - - -Perfluorooctanoic Acid (PFOA) - - - - - - - - -Perfluorohexane Sulphonate (PFHxS) - - - - - - - - -Perfluorohexanoic Acid (PFHxA) - - - - - - - - -

TOTAL 4.22E-07







Scenario 11a





Hazard Index(Adult)



Hazard Index(Child)


Perfluorooctane Sulfonate (PFOS) 0.1052 1.00E+00 1.86E-05 3.10E-06 3.26E-07 1.75E-02 - - -Perfluorooctanoic Acid (PFOA) - - - - - - - - -Perfluorohexane Sulphonate (PFHxS) 0.04 1.00E+00 2.00E-05 3.10E-06 1.24E-07 6.20E-03 - - -Perfluorohexanoic Acid (PFHxA) 0.005 1.00E+00 1.00E-01 3.10E-06 1.55E-08 1.55E-07 - - -

TOTAL 2.37E-02

ChemicalSediment






Scenario 11a



Adult IntakeFactor

(threshold)


Hazard Index(Adult)

Child IntakeFactor

(threshold)


Hazard Index(Child)


Perfluorooctane Sulfonate (PFOS) 0.1052 0.0005 1.86E-05 3.89E-08 4.09E-09 2.20E-04 - - -Perfluorooctanoic Acid (PFOA) - - - - - - - - -Perfluorohexane Sulphonate (PFHxS) 0.04 0.0005 2.00E-05 3.89E-08 1.56E-09 7.78E-05 - - -Perfluorohexanoic Acid (PFHxA) 0.005 0.0005 1.00E-01 3.89E-08 1.94E-10 1.94E-09 - - -

TOTAL 2.98E-04

ChemicalSediment

Concentration

DermalAbsorption

Factor (DAF)




Scenario 11a





Hazard Index(Adult)



Hazard Index(Child)


Perfluorooctane Sulfonate (PFOS) 0.004734 1.86E-05 3.76E-04 1.78E-06 9.56E-02 - - -Perfluorooctanoic Acid (PFOA) 0.0006016 1.59E-04 3.76E-04 2.26E-07 1.42E-03 - - -Perfluorohexane Sulphonate (PFHxS) 0.006105 2.00E-05 3.76E-04 2.29E-06 1.15E-01 - - -Perfluorohexanoic Acid (PFHxA) 0.002065 1.00E-01 3.76E-04 7.76E-07 7.76E-06 - - -

TOTAL 2.12E-01





Scenario 11a





Hazard Index(Adult)



Hazard Index(Child)


Perfluorooctane Sulfonate (PFOS) 0.004734 0.000001 1.86E-05 6.22E-07 2.95E-09 1.58E-04 - - -Perfluorooctanoic Acid (PFOA) 0.0006016 0.000001 1.59E-04 6.22E-07 3.74E-10 2.35E-06 - - -Perfluorohexane Sulphonate (PFHxS) 0.006105 0.000001 2.00E-05 6.22E-07 3.80E-09 1.90E-04 - - -Perfluorohexanoic Acid (PFHxA) 0.002065 0.000001 1.00E-01 6.22E-07 1.28E-09 1.28E-08 - - -

TOTAL 3.51E-04






Scenario 11a



SOIL EXPOSURE PATHWAYSIncidental Ingestion of Soil 1.6E-03 -Dermal Contact with Soil 3.3E-05 -Inhalation of Surface Soil-Derived Dust in Indoor Air - -Inhalation of Surface Soil-Derived Dust in Outdoor Air 4.2E-07 -Inhalation of Surface Soil-Derived Vapours in Outdoor Air - -Inhalation of Surface Soil-Derived Vapours from Excavation - -Inhalation of Subsurface Soil-Derived Vapours in Indoor Air - -Inhalation of Subsurface Soil-Derived Vapours in Outdoor Air - -

SEDIMENT EXPOSURE PATHWAYSIncidental ingestion of sediment 2.4E-02 -Dermal contact with sediment 3.0E-04 -

SURFACE WATER EXPOSURE PATHWAYSIncidental ingestion of surface water during fishing - -Incidental ingestion of surface water during boating - -Incidental ingestion of surface water during swimming in creeks/rivers 2.1E-01 -Dermal contact with surface water during fishing - -Dermal contact with surface water during boating - -Dermal contact with surface water during swimming in creeks/rivers 3.5E-04 -

TOTAL 2.38E-01


Scenario 11a



Scenario 11b


Sediment(mg/kg)

SurfaceWater (mg/L)

Site: RAAF Base Williamtown Perfluorooctane Sulfonate (PFOS) 0.00419 0.0501 0.001724Address: RAAF Base Williamtown, NSW Perfluorooctanoic Acid (PFOA) 0.000123Client: Department of Defence Perfluorohexane Sulphonate (PFHxS) 0.0139 0.003045Scenario: Scenario 11b Perfluorohexanoic Acid (PFHxA) 0.00231 0.00099

Council Worker























































Ingestion of beef

Ingestion of lamb

Ingestion of rabbit





Soil (mg/kg)


Receptor:





Scenario 11b





Hazard Index(Adult)


Perfluorooctane Sulfonate (PFOS) 0.00419 1.00E+00 1.86E-05 3.87E-07 1.62E-09 8.73E-05Perfluorooctanoic Acid (PFOA) - - - - - -Perfluorohexane Sulphonate (PFHxS) - - - - - -Perfluorohexanoic Acid (PFHxA) - - - - - -

TOTAL 8.73E-05



Factor



Scenario 11b



Adult IntakeFactor

(threshold)


Hazard Index(Adult)

Child IntakeFactor

(threshold)


Hazard Index(Child)


Perfluorooctane Sulfonate (PFOS) 0.00419 0.0005 1.86E-05 2.43E-09 1.02E-11 5.48E-07 - - -Perfluorooctanoic Acid (PFOA) - - - - - - - - -Perfluorohexane Sulphonate (PFHxS) - - - - - - - - -Perfluorohexanoic Acid (PFHxA) - - - - - - - - -

TOTAL 5.48E-07



DermalAbsorption

Factor (DAF)



Scenario 11b




(threshold)



Hazard Index(Adult)




Hazard Index(Child)


Perfluorooctane Sulfonate (PFOS) 0.00419 3.85E-08 7.00E-05 3.95E-10 1.66E-12 2.37E-08 - - -Perfluorooctanoic Acid (PFOA) - - - - - - - - -Perfluorohexane Sulphonate (PFHxS) - - - - - - - - -Perfluorohexanoic Acid (PFHxA) - - - - - - - - -

TOTAL 2.37E-08







Scenario 11b





Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.31E-03

ChemicalSediment






Scenario 11b



Adult IntakeFactor

(threshold)


Hazard Index(Adult)

Child IntakeFactor

(threshold)


Hazard Index(Child)



TOTAL 1.45E-05

ChemicalSediment

Concentration

DermalAbsorption

Factor (DAF)




Scenario 11b





Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.15E-02





Scenario 11b





Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.91E-05






Scenario 11b






TOTAL 1.30E-02


Scenario 11b


AECOM





Scenario 12a


SurfaceWater (mg/L)

Groundwater(mg/L)

Cattle BloodSerum (mg/L)

Cattle Meat(mg/kg)

Site: RAAF Base Williamtown Perfluorooctane Sulfonate (PFOS) 0.00935 0.004734 0.0014 modelled modelledAddress: RAAF Base Williamtown, NSW Perfluorooctanoic Acid (PFOA) 0 0.0006016 0.00009 modelled modelledClient: Department of Defence Perfluorohexane Sulphonate (PFHxS) 0 0.006105 0.00136 modelled modelledScenario: Scenario 12a Perfluorohexanoic Acid (PFHxA) 0 0.002065 0.00059 modelled modelled


x Incidental ingestion of soilx Dermal contact with soilx Inhalation of surface soil-derived dust in indoor air


Inhalation of surface soil-derived vapours in outdoor airInhalation of soil-derived vapours from excavation (USEPA 2002 method)Inhalation of subsurface soil-derived vapours in indoor airInhalation of subsurface soil-derived vapours in outdoor airIncidental ingestion of lead in soil (Adult Lead Model)


Inhalation of lead in dust outdoors (Adult Lead Model)Groundwater Pathways

Ingestion of potable groundwaterInhalation of groundwater-derived vapours in indoor airInhalation of groundwater-derived vapours in outdoor airInhalation of groundwater vapours during irrigation/ showeringInhalation of vapour emissions from groundwater seepage in an excavationInhalation of vapour emissions from groundwater seepage in a basementIncidental ingestion of groundwater seepage in an excavationDermal contact with groundwater seepage in an excavation

x Incidental ingestion of groundwater during showering/bathingx Dermal contact with groundwater during showering/bathing


x Dermal contact with groundwater during food preparation and cleanupx Incidental ingestion of groundwater during domestic laundryx Dermal contact with groundwater during domestic laundryx Dermal contact with groundwater residues after washing clothes


x Dermal contact with groundwater during household cleaningx Incidental ingestion of groundwater residues after washing floorsx Dermal contact with groundwater residues after washing floorsx Incidental ingestion of groundwater during sprinkler playx Dermal contact with groundwater during sprinkler playx Incidental ingestion of groundwater during washing of animalsx Dermal contact with groundwater during washing of animalsx Incidental ingestion of groundwater residues after washing animalsx Dermal contact with groundwater residues after washing companion animalsx Incidental ingestion of groundwater during washing of vehiclesx Dermal contact with groundwater during washing of vehiclesx Incidental ingestion of groundwater during irrigation


x Incidental ingestion of groundwater used in home swimming poolsx Dermal contact with groundwater used in home swimming pools

Soil Vapour PathwaysInhalation of soil vapour-derived vapours in indoor airInhalation of soil vapour-derived vapours in outdoor air


Dermal contact with sedimentSurface Water Pathways

Incidental ingestion of surface water during fishingDermal contact with surface water during fishingIncidental ingestion of surface water during boatingDermal contact with surface water during boating


Dermal contact with surface water during swimming in creeks/riversx Incidental ingestion of surface water during irrigationx Dermal contact with surface water during irrigation

Dietary PathwaysIngestion of home grown eggsIngestion of finfish


x Ingestion of beefIngestion of lambIngestion of rabbitIngestion of milk from livestockIngestion of home grown green vegetablesIngestion of home grown fruit


Soil (mg/kg)


Receptor:Agricultural workerExposure Assumptions:Reasonable Maximum Exposure




Scenario 12a



Floor Area m2


Water (C)


Surfaceloading on

floor

mg/L L/cm2 mg/cm2


Chemical

10.0

1.25



Scenario 12a








SoilConcentration

(Cs)


(Cp)



(CDIlivestock)


Beef SteerVolume of

Distribution(Vd)




Serum Ratio(TSR)





Chemical



Scenario 12a





Hazard Index(Adult)



Hazard Index(Child)



TOTAL 4.31E-04 3.35E-03



Factor



Scenario 12a



Adult IntakeFactor

(threshold)


Hazard Index(Adult)

Child IntakeFactor

(threshold)


Hazard Index(Child)



TOTAL 3.85E-05 5.36E-05



DermalAbsorption

Factor (DAF)



Scenario 12a






Hazard Index(Adult)




Hazard Index(Child)



TOTAL 8.03E-07 8.03E-07




Surface Soil)



Scenario 12a




(threshold)



Hazard Index(Adult)




Hazard Index(Child)



TOTAL 2.88E-10 2.88E-10







Scenario 12a





Hazard Index(Adult)



Hazard Index(Child)



TOTAL 6.42E-02 3.60E-01





Scenario 12a





Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.03E-05 1.46E-05






Scenario 12a





Hazard Index(Adult)



Hazard Index(Child)



TOTAL 8.22E-03





Scenario 12a





Hazard Index(Adult)



Hazard Index(Child)



TOTAL 3.95E-06






Scenario 12a





Hazard Index(Adult)



Hazard Index(Child)



TOTAL 3.08E-03





Scenario 12a





Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.48E-06






Scenario 12a


Oral RfD(Background

Corrected)



Hazard Index(Adult)



Hazard Index(Child)



TOTAL 7.81E-05 5.31E-04



Water






Scenario 12a





Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.07E-03 5.01E-03





Scenario 12a





Hazard Index(Adult)



Hazard Index(Child)



TOTAL 5.15E-07 6.72E-07






Scenario 12a





Hazard Index(Adult)



Hazard Index(Child)



TOTAL 3.10E-02

Chemical






Scenario 12a



Adult IntakeFactor

(threshold)


Hazard Index(Adult)



Hazard Index(Child)



TOTAL 5.21E-04

Chemical


in Water



factor



Scenario 12a





Hazard Index(Adult)



Hazard Index(Child)



TOTAL 2.74E-02 1.43E-01





Scenario 12a





Hazard Index(Adult)



Hazard Index(Child)



TOTAL 8.78E-06 1.16E-05






Scenario 12a





Hazard Index(Adult)



Hazard Index(Child)



TOTAL 9.66E-03 2.50E-03





Scenario 12a



Adult IntakeFactor

(threshold)


Hazard Index(Adult)

Child IntakeFactor

(threshold)


Hazard Index(Child)



TOTAL 1.35E-05 9.43E-07






Scenario 12a









Hazard Index(Adult)



Hazard Index(Child)



TOTAL 2.43E-02 8.91E-03

Chemical


Water



Factor



Scenario 12a



Adult IntakeFactor

(threshold)


Hazard Index(Adult)

Child IntakeFactor

(threshold)


Hazard Index(Child)



TOTAL 9.35E-04 5.40E-03

Chemical


Water

DermalAbsorption

factor





Scenario 12a





Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.13E-02 5.86E-03





Scenario 12a





Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.58E-05 2.21E-06






Scenario 12a





Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.58E-01 3.57E-01





Scenario 12a





Hazard Index(Adult)



Hazard Index(Child)



TOTAL 2.53E-05 1.45E-05






Scenario 12a





Hazard Index(Adult)



Hazard Index(Child)


Perfluorooctane Sulfonate (PFOS) 0.018708425 1.00E+00 1.86E-05 1.77E-03 3.32E-05 1.78E+00 3.95E-03 7.38E-05 3.97E+00Perfluorooctanoic Acid (PFOA) 1.5923E-05 1.00E+00 1.59E-04 1.77E-03 2.83E-08 1.77E-04 3.95E-03 6.28E-08 3.95E-04Perfluorohexane Sulphonate (PFHxS) - - - - - - - - -Perfluorohexanoic Acid (PFHxA) - - - - - - - - -

TOTAL 1.78E+00 3.97E+00

Chemical


Steer)


OralBioavailability

Factor



Scenario 12a

Health Risk Calculations - Incidental ingestion of surface water during irrigationRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 12a Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 4.43E-02 2.30E-02





Scenario 12a

Health Risk Calculations - Dermal contact with surface water during irrigationRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 12a Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 6.20E-05 8.64E-06






Scenario 12a





SURFACE WATER EXPOSURE PATHWAYSIncidental ingestion of surface water during fishing - -Incidental ingestion of surface water during boating - -Incidental ingestion of surface water during swimming in creeks/rivers - -Incidental ingestion of surface water during irrigation 4.4E-02 2.3E-02Dermal contact with surface water during fishing - -Dermal contact with surface water during boating - -Dermal contact with surface water during swimming in creeks/rivers - -Dermal contact with surface water during irrigation 6.2E-05 8.6E-06

DIETARY EXPOSURE PATHWAYSIngestion of finfish from the Site - -Ingestion of breast milk by infants - -Ingestion of home grown beef 1.8E+00 4.0E+00Ingestion of home grown livestock milk - -Ingestion of home grown eggs - -Ingestion of home grown fruit - -Ingestion of home grown green vegetables - -Ingestion of home grown lamb - -Ingestion of rabbit meat - -Ingestion of crustaceans and oysters - -

TOTAL 2.14E+00 4.92E+00


Scenario 12a



Scenario 12b



Floor Area m2


Water (C)


Surfaceloading on

floor

mg/L L/cm2 mg/cm2


Chemical

10.0

1.25



Scenario 12b








SoilConcentration

(Cs)


(Cp)



(CDIlivestock)


Beef SteerVolume of

Distribution(Vd)




Serum Ratio(TSR)



Perfluorooctane Sulfonate (PFOS) 4.2E-03 1.7E-03 3.4E-04 1.14E+02 2.10E-01 2.65E-01 1.00E-01 6.88E-03Perfluorooctanoic Acid (PFOA) 1.2E-04 - - - - - -Perfluorohexane Sulphonate (PFHxS) 3.0E-03 - - - - - -Perfluorohexanoic Acid (PFHxA) 9.9E-04 - - - - - -


Chemical



Scenario 12b





Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.61E-04 7.51E-04



Factor



Scenario 12b



Adult IntakeFactor

(threshold)


Hazard Index(Adult)

Child IntakeFactor

(threshold)


Hazard Index(Child)



TOTAL 5.07E-06 7.07E-06



DermalAbsorption

Factor (DAF)



Scenario 12b






Hazard Index(Adult)




Hazard Index(Child)



TOTAL 3.60E-07 2.93E-07




Surface Soil)



Scenario 12b




(threshold)



Hazard Index(Adult)




Hazard Index(Child)



TOTAL 9.68E-11 6.45E-11







Scenario 12b





Hazard Index(Adult)



Hazard Index(Child)



TOTAL 9.62E-04 8.98E-03





Scenario 12b





Hazard Index(Adult)



Hazard Index(Child)



TOTAL 7.70E-07 1.10E-06






Scenario 12b





Hazard Index(Adult)



Hazard Index(Child)



TOTAL 5.77E-04





Scenario 12b





Hazard Index(Adult)



Hazard Index(Child)



TOTAL 4.62E-07






Scenario 12b





Hazard Index(Adult)



Hazard Index(Child)



TOTAL 6.17E-05





Scenario 12b





Hazard Index(Adult)



Hazard Index(Child)



TOTAL 4.93E-08






Scenario 12b





Hazard Index(Adult)


(mg/L) (unitless) (mL/m2) (unitless) (mg/kg/day) (L/kg/day) (mg/kg/day) (unitless) (L/kg/day)

Perfluorooctane Sulfonate (PFOS) 0.000358 0.0005 4.50E+01 1.00E+00 1.86E-05 5.43E-07 1.94E-10 1.04E-05 1.48E-06Perfluorooctanoic Acid (PFOA) 0.0000658 0.0005 4.50E+01 1.00E+00 1.59E-04 5.43E-07 3.57E-11 2.24E-07 1.48E-06Perfluorohexane Sulphonate (PFHxS) 0.00028 0.0005 4.50E+01 1.00E+00 2.00E-05 5.43E-07 1.52E-10 7.60E-06 1.48E-06Perfluorohexanoic Acid (PFHxA) 0.00059 0.0005 4.50E+01 1.00E+00 1.00E-01 5.43E-07 3.20E-10 3.20E-09 1.48E-06

TOTAL 1.83E-05



Water






Scenario 12b


(mg/L) (unitless) (mL/m2)

Perfluorooctane Sulfonate (PFOS) 0.000358 0.0005 4.50E+01Perfluorooctanoic Acid (PFOA) 0.0000658 0.0005 4.50E+01Perfluorohexane Sulphonate (PFHxS) 0.00028 0.0005 4.50E+01Perfluorohexanoic Acid (PFHxA) 0.00059 0.0005 4.50E+01

TOTAL

Chemical


Water


Amount of waterleft in garment Child Intake

(threshold)Hazard Index

(Child)

(mg/kg/day) (unitless)

5.29E-10 2.84E-059.72E-11 6.10E-074.14E-10 2.07E-058.71E-10 8.71E-09

4.97E-05



Scenario 12b





Hazard Index(Adult)



Hazard Index(Child)



TOTAL 3.77E-05 1.76E-04





Scenario 12b





Hazard Index(Adult)



Hazard Index(Child)



TOTAL 3.01E-08 3.93E-08






Scenario 12b





Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.15E-03

Chemical






Scenario 12b



Adult IntakeFactor

(threshold)


Hazard Index(Adult)



Hazard Index(Child)



TOTAL 2.44E-05

Chemical


in Water



factor



Scenario 12b





Hazard Index(Adult)



Hazard Index(Child)



TOTAL 2.14E-04 3.57E-03





Scenario 12b





Hazard Index(Adult)



Hazard Index(Child)



TOTAL 3.43E-07 8.70E-07






Scenario 12b





Hazard Index(Adult)



Hazard Index(Child)



TOTAL 7.54E-05 5.86E-05





Scenario 12b



Adult IntakeFactor

(threshold)


Hazard Index(Adult)

Child IntakeFactor

(threshold)


Hazard Index(Child)



TOTAL 1.76E-07 3.68E-08






Scenario 12b









Hazard Index(Adult)


(mg/L) L/cm2 (unitless) (mg/kg/day) (L/kg/day) (mg/kg/day) (unitless) (L/kg/day)

Perfluorooctane Sulfonate (PFOS) 0.000358 2.36E-05 1.00E+00 1.86E-05 5.00E-05 1.79E-08 9.63E-04 1.30E-05Perfluorooctanoic Acid (PFOA) 0.0000658 2.36E-05 1.00E+00 1.59E-04 5.00E-05 3.29E-09 2.07E-05 1.30E-05Perfluorohexane Sulphonate (PFHxS) 0.00028 2.36E-05 1.00E+00 2.00E-05 5.00E-05 1.40E-08 7.00E-04 1.30E-05Perfluorohexanoic Acid (PFHxA) 0.00059 2.36E-05 1.00E+00 1.00E-01 5.00E-05 2.95E-08 2.95E-07 1.30E-05

TOTAL 1.68E-03

Chemical


Water



Factor



Scenario 12b


Water left on dog after washing 0.00007

Body weight of dog 23

Surface area of dog 8443

Fraction of residue transferred to hands 0.04

(mg/L) L/cm2

Perfluorooctane Sulfonate (PFOS) 0.000358 2.36E-05Perfluorooctanoic Acid (PFOA) 0.0000658 2.36E-05Perfluorohexane Sulphonate (PFHxS) 0.00028 2.36E-05Perfluorohexanoic Acid (PFHxA) 0.00059 2.36E-05

TOTAL

Chemical


Water

Hand residue loadingfactor Child Intake

(threshold)Hazard Index

(Child)

(mg/kg/day) (unitless)

4.64E-09 2.49E-048.53E-10 5.36E-063.63E-09 1.81E-047.65E-09 7.65E-08

4.36E-04



Scenario 12b



Adult IntakeFactor

(threshold)


Hazard Index(Adult)

Child IntakeFactor

(threshold)


Hazard Index(Child)



TOTAL 6.74E-05 2.20E-04

Chemical


Water

DermalAbsorption

factor





Scenario 12b





Hazard Index(Adult)



Hazard Index(Child)



TOTAL 3.01E-04 1.56E-04





Scenario 12b





Hazard Index(Adult)



Hazard Index(Child)



TOTAL 7.03E-07 9.81E-08






Scenario 12b





Hazard Index(Adult)



Hazard Index(Child)



TOTAL 8.56E-04 7.13E-03





Scenario 12b





Hazard Index(Adult)



Hazard Index(Child)



TOTAL 6.85E-07 8.70E-07






Scenario 12b





Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.51E-01 3.53E-01

Chemical


Steer)


OralBioavailability

Factor



Scenario 12b

Health Risk Calculations - Incidental ingestion of surface water during irrigationRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 12b Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 2.20E-03 1.14E-03





Scenario 12b

Health Risk Calculations - Dermal contact with surface water during irrigationRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 12b Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 5.13E-06 7.16E-07






Scenario 12b






DIETARY EXPOSURE PATHWAYSIngestion of finfish from the Site - -Ingestion of breast milk by infants - -Ingestion of home grown beef 1.5E-01 3.5E-01Ingestion of home grown livestock milk - -Ingestion of home grown eggs - -Ingestion of home grown fruit - -Ingestion of home grown green vegetables - -Ingestion of home grown lamb - -Ingestion of rabbit meat - -Ingestion of crustaceans and oysters - -

TOTAL 1.58E-01 3.77E-01


Scenario 12b


AECOM


Southern AreaRisk Estimates



Scenario 2.1a, 3.1a, 4.1a and 5.1a - Southern Area


Groundwater(mg/L)

Cattle Meat(mg/kg)

Finfish(mg/kg)


(mg/kg)

Site: RAAF Base Williamtown Perfluorooctane Sulfonate (PFOS) 0.15 0.0982 modelled 0.00225 0.0022Address: RAAF Base Williamtown, NSW Perfluorooctanoic Acid (PFOA) 0.005 0.00294 modelled 0.0003Client: Department of Defence Perfluorohexane Sulphonate (PFHxS) 0.015 0.0186 modelledScenario: Scenario 2.1a, 3.1a, 4.1a and 5.1a - Southern Area Perfluorohexanoic Acid (PFHxA) 0.004 0.00805 modelled




















Dermal contact with surface water during swimming in creeks/riversDietary Pathways

Ingestion of home grown eggsx Ingestion of finfish




Soil (mg/kg)







Calculation of Surface Loading on Floors Following CleaningRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.1a, 3.1a, 4.1a and 5.1a - Southern Area Scenario


Floor Area m2


Water (C)


Surfaceloading on

floor

mg/L L/cm2 mg/cm2


Chemical

10.0

1.25




Calculation of Concentrations in Cattle Meat (Steer) Based on Environmental ConcentrationsRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.1a, 3.1a, 4.1a and 5.1a - Southern Area Scenario







SoilConcentration

(Cs)


(Cp)



(CDIlivestock)


Beef SteerVolume of

Distribution(Vd)




Serum Ratio(TSR)



Perfluorooctane Sulfonate (PFOS) 1.5E-01 4.7E-03 1.5E-03 1.14E+02 2.10E-01 1.21E+00 1.00E-01 3.15E-02Perfluorooctanoic Acid (PFOA) 5.0E-03 6.0E-04 1.3E-04 8.00E-01 2.10E-01 7.36E-04 1.00E-01 1.91E-05Perfluorohexane Sulphonate (PFHxS) 1.5E-02 6.1E-03 1.2E-03 - - - - -Perfluorohexanoic Acid (PFHxA) 4.0E-03 2.1E-03 4.0E-04 - - - - -


Chemical




Health Risk Calculations - Incidental Soil IngestionRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.1a, 3.1a, 4.1a and 5.1a - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)


Perfluorooctane Sulfonate (PFOS) 0.15 1.00E+00 1.86E-05 8.57E-07 1.29E-07 6.91E-03 6.67E-06 1.00E-06 5.38E-02Perfluorooctanoic Acid (PFOA) 0.005 1.00E+00 1.59E-04 8.57E-07 4.29E-09 2.69E-05 6.67E-06 3.33E-08 2.09E-04Perfluorohexane Sulphonate (PFHxS) 0.015 1.00E+00 2.00E-05 8.57E-07 1.29E-08 6.43E-04 6.67E-06 1.00E-07 5.00E-03Perfluorohexanoic Acid (PFHxA) 0.004 1.00E+00 1.00E-01 8.57E-07 3.43E-09 3.43E-08 6.67E-06 2.67E-08 2.67E-07

TOTAL 7.58E-03 5.90E-02



Factor




Health Risk Calculations - Dermal Contact with SoilRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.1a, 3.1a, 4.1a and 5.1a - Southern Area Scenario


Adult IntakeFactor

(threshold)


Hazard Index(Adult)

Child IntakeFactor

(threshold)


Hazard Index(Child)



TOTAL 6.77E-04 9.43E-04



DermalAbsorption

Factor (DAF)




Health Risk Calculations - Inhalation of Soil-Derived Dust (Particulates) in Indoor AirRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.1a, 3.1a, 4.1a and 5.1a - Southern Area Scenario





Hazard Index(Adult)




Hazard Index(Child)


Perfluorooctane Sulfonate (PFOS) 0.15 3.85E-08 7.00E-05 6.01E-09 9.01E-10 1.29E-05 6.01E-09 9.01E-10 1.29E-05Perfluorooctanoic Acid (PFOA) 0.005 3.85E-08 5.60E-04 6.01E-09 3.00E-11 5.37E-08 6.01E-09 3.00E-11 5.37E-08Perfluorohexane Sulphonate (PFHxS) 0.015 3.85E-08 7.00E-05 6.01E-09 9.01E-11 1.29E-06 6.01E-09 9.01E-11 1.29E-06Perfluorohexanoic Acid (PFHxA) 0.004 3.85E-08 3.50E-01 6.01E-09 2.40E-11 6.87E-11 6.01E-09 2.40E-11 6.87E-11

TOTAL 1.42E-05 1.42E-05




Surface Soil)




Health Risk Calculations - Inhalation of Soil-Derived Dust (Particulates) in Outdoor AirRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.1a, 3.1a, 4.1a and 5.1a - Southern Area Scenario



(threshold)



Hazard Index(Adult)




Hazard Index(Child)



TOTAL 5.10E-09 5.10E-09








Health Risk Calculations - Ingestion of FinfishRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.1a, 3.1a, 4.1a and 5.1a - Southern Area Scenario


Adult IntakeFactor

(threshold)


Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.70E-02 3.97E-02

ChemicalFish


Factor





Health Risk Calculations - Incidental ingestion of groundwater during showering/bathingRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.1a, 3.1a, 4.1a and 5.1a - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)


Perfluorooctane Sulfonate (PFOS) 0.0982 1.86E-05 4.46E-04 4.38E-05 2.36E+00 2.50E-03 2.46E-04 1.32E+01Perfluorooctanoic Acid (PFOA) 0.00294 1.59E-04 4.46E-04 1.31E-06 8.24E-03 2.50E-03 7.35E-06 4.62E-02Perfluorohexane Sulphonate (PFHxS) 0.0186 2.00E-05 4.46E-04 8.30E-06 4.15E-01 2.50E-03 4.65E-05 2.33E+00Perfluorohexanoic Acid (PFHxA) 0.00805 1.00E-01 4.46E-04 3.59E-06 3.59E-05 2.50E-03 2.01E-05 2.01E-04

TOTAL 2.78E+00 1.56E+01






Health Risk Calculations - Dermal contact with groundwater during showering/bathingRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.1a, 3.1a, 4.1a and 5.1a - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 4.45E-04 6.33E-04







Health Risk Calculations - Incidental ingestion of groundwater during food preparation and cleanupRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.1a, 3.1a, 4.1a and 5.1a - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 3.56E-01






Health Risk Calculations - Dermal contact with groundwater during food preparation and cleanupRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.1a, 3.1a, 4.1a and 5.1a - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.71E-04







Health Risk Calculations - Incidental ingestion of groundwater during domestic laundryRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.1a, 3.1a, 4.1a and 5.1a - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.33E-01






Health Risk Calculations - Dermal contact with groundwater during domestic laundryRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.1a, 3.1a, 4.1a and 5.1a - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 6.41E-05







Health Risk Calculations - Dermal Contact with residues in clothes after washing with groundwaterRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.1a, 3.1a, 4.1a and 5.1a - Southern Area Scenario

Oral RfD(Background

Corrected)



Hazard Index(Adult)



Hazard Index(Child)



TOTAL 3.38E-03 2.30E-02



Water







Health Risk Calculations - Incidental ingestion of groundwater during household cleaningRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.1a, 3.1a, 4.1a and 5.1a - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 4.65E-02 2.17E-01






Health Risk Calculations - Dermal contact with groundwater during household cleaningRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.1a, 3.1a, 4.1a and 5.1a - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 2.23E-05 2.91E-05







Health Risk Calculations - Incidental Ingestion via Hand to Mouth Transfer of Residues on Floors After CleaningRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.1a, 3.1a, 4.1a and 5.1a - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)


Perfluorooctane Sulfonate (PFOS) 0.0982 1.25E-05 1.86E-05 - - 2.15E-04 2.12E-05 1.14E+00Perfluorooctanoic Acid (PFOA) 0.00294 1.25E-05 1.59E-04 - - 2.15E-04 6.33E-07 3.98E-03Perfluorohexane Sulphonate (PFHxS) 0.0186 1.25E-05 2.00E-05 - - 2.15E-04 4.01E-06 2.00E-01Perfluorohexanoic Acid (PFHxA) 0.00805 1.25E-05 1.00E-01 - - 2.15E-04 1.73E-06 1.73E-05

TOTAL 1.34E+00

Chemical







Health Risk Calculations - Dermal Contact with residues on floors after cleaningRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.1a, 3.1a, 4.1a and 5.1a - Southern Area Scenario


Adult IntakeFactor

(threshold)


Hazard Index(Adult)



Hazard Index(Child)



TOTAL 2.26E-02

Chemical


in Water



factor




Health Risk Calculations - Incidental ingestion of groundwater during sprinkler playRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.1a, 3.1a, 4.1a and 5.1a - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)


Perfluorooctane Sulfonate (PFOS) 0.0982 1.86E-05 1.91E-04 1.87E-05 1.01E+00 9.92E-04 9.74E-05 5.24E+00Perfluorooctanoic Acid (PFOA) 0.00294 1.59E-04 1.91E-04 5.61E-07 3.52E-03 9.92E-04 2.92E-06 1.83E-02Perfluorohexane Sulphonate (PFHxS) 0.0186 2.00E-05 1.91E-04 3.55E-06 1.77E-01 9.92E-04 1.84E-05 9.22E-01Perfluorohexanoic Acid (PFHxA) 0.00805 1.00E-01 1.91E-04 1.54E-06 1.54E-05 9.92E-04 7.98E-06 7.98E-05

TOTAL 1.19E+00 6.18E+00






Health Risk Calculations - Dermal contact with groundwater during sprinkler playRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.1a, 3.1a, 4.1a and 5.1a - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 3.80E-04 5.02E-04







Health Risk Calculations - Incidental ingestion of groundwater during washing of animalsRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.1a, 3.1a, 4.1a and 5.1a - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 4.18E-01 1.08E-01






Health Risk Calculations - Dermal contact with groundwater during washing of animalsRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.1a, 3.1a, 4.1a and 5.1a - Southern Area Scenario


Adult IntakeFactor

(threshold)


Hazard Index(Adult)

Child IntakeFactor

(threshold)


Hazard Index(Child)



TOTAL 5.86E-04 4.08E-05







Health Risk Calculations - Incidental Ingestion via Hand to Mouth Transfer of Residues on Animals after washing with groundwaterRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.1a, 3.1a, 4.1a and 5.1a - Southern Area Scenario








Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.05E+00 3.86E-01

Chemical


Water



Factor






Adult IntakeFactor

(threshold)


Hazard Index(Adult)

Child IntakeFactor

(threshold)


Hazard Index(Child)



TOTAL 4.05E-02 2.34E-01

Chemical


Water

DermalAbsorption

factor










Hazard Index(Adult)



Hazard Index(Child)



TOTAL 6.97E-02






Health Risk Calculations - Dermal contact with groundwater during washing of vehiclesRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.1a, 3.1a, 4.1a and 5.1a - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 9.76E-05







Health Risk Calculations - Incidental ingestion of groundwater during irrigationRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.1a, 3.1a, 4.1a and 5.1a - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 4.89E-01 2.54E-01






Health Risk Calculations - Dermal contact with groundwater during irrigationRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.1a, 3.1a, 4.1a and 5.1a - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 6.85E-04 9.55E-05







Health Risk Calculations - Incidental ingestion of groundwater used in home swimming poolsRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.1a, 3.1a, 4.1a and 5.1a - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 6.86E+00 1.54E+01






Health Risk Calculations - Dermal contact with groundwater used in home swimming poolsRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.1a, 3.1a, 4.1a and 5.1a - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.10E-03 6.28E-04







Health Risk Calculations - Ingestion of EggsRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.1a, 3.1a, 4.1a and 5.1a - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)


Perfluorooctane Sulfonate (PFOS) - - - - - - - -Perfluorooctanoic Acid (PFOA) - - - - - - - -Perfluorohexane Sulphonate (PFHxS) - - - - - - - -Perfluorohexanoic Acid (PFHxA) - - - - - - - -

TOTAL






Health Risk Calculations - Ingestion of Crustaceans and OsytersRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.1a, 3.1a, 4.1a and 5.1a - Southern Area Scenario


Adult IntakeFactor

(threshold)


Hazard Index(Adult)



Hazard Index(Child)



TOTAL 8.45E-03 4.57E-03

Chemical


Concentration






Health Risk Calculations - Ingestion of Cattle Muscle Tissue (Beef)RAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.1a, 3.1a, 4.1a and 5.1a - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.38E-01 3.26E-01

Chemical


Steer)


OralBioavailability

Factor




Summary of Estimated Health RisksRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.1a, 3.1a, 4.1a and 5.1a - Southern Area Scenario

Adult Exposure Childhood Exposure Adult Exposure Childhood Exposure Adult Exposure Childhood Exposure Adult Exposure Childhood Exposure

SOIL EXPOSURE PATHWAYSIncidental Ingestion of Soil 7.6E-03 5.9E-02 7.6E-03 5.9E-02 - - 7.6E-03 5.9E-02Dermal Contact with Soil 6.8E-04 9.4E-04 6.8E-04 9.4E-04 - - 6.8E-04 9.4E-04Inhalation of Surface Soil-Derived Dust in Indoor Air 1.4E-05 1.4E-05 1.4E-05 1.4E-05 - - 1.4E-05 1.4E-05Inhalation of Surface Soil-Derived Dust in Outdoor Air 5.1E-09 5.1E-09 5.1E-09 5.1E-09 - - 5.1E-09 5.1E-09Inhalation of Surface Soil-Derived Vapours in Outdoor Air - - - - - - - -Inhalation of Surface Soil-Derived Vapours from Excavation - - - - - - - -Inhalation of Subsurface Soil-Derived Vapours in Indoor Air - - - - - - - -Inhalation of Subsurface Soil-Derived Vapours in Outdoor Air - - - - - - - -

GROUNDWATER EXPOSURE PATHWAYSIngestion of Potable Groundwater - - - - - - - -Inhalation of Groundwater-Derived Vapours in Indoor Air - - - - - - - -Inhalation of Groundwater-Derived Vapours in Outdoor Air - - - - - - - -Inhalation of Groundwater Vapours (Where GW Enters Trench) - - - - - - - -Inhalation of Groundwater Derived Vapours from Shower/ Irrigation - - - - - - - -Vapours from Flowing Water - - - - - - - -Incidental Ingestion of Groundwater (Bathing or Excavation) - - - - - - - -Dermal Contact with Groundwater (Bathing or Excavation) - - - - - - - -Incidental ingestion of groundwater during showering/bathing 2.8E+00 1.6E+01 - - 2.8E+00 1.6E+01 - -Incidental ingestion of groundwater during food preparation and cleanup 3.6E-01 - - - 3.6E-01 - - -Incidental ingestion of groundwater during domestic laundry 1.3E-01 - - - 1.3E-01 - - -Incidental ingestion of groundwater during household cleaning 4.6E-02 2.2E-01 - - 4.6E-02 2.2E-01 - -Incidental ingestion of groundwater during sprinkler play 1.2E+00 6.2E+00 1.2E+00 6.2E+00 - - 1.2E+00 6.2E+00Incidental ingestion of groundwater during washing of animals 4.2E-01 1.1E-01 4.2E-01 1.1E-01 - - 4.2E-01 1.1E-01Incidental ingestion of groundwater during washing of vehicles 7.0E-02 - 7.0E-02 - - - 7.0E-02 -Incidental ingestion of groundwater during irrigation 4.9E-01 2.5E-01 4.9E-01 2.5E-01 - - 4.9E-01 2.5E-01Incidental ingestion of groundwater used in home swimming pools 6.9E+00 1.5E+01 6.9E+00 1.5E+01 - - 6.9E+00 1.5E+01Dermal contact with groundwater during showering/bathing 4.4E-04 6.3E-04 - - 4.4E-04 6.3E-04 - -Dermal contact with groundwater during food preparation and cleanup 1.7E-04 - - - 1.7E-04 - - -Dermal contact with groundwater during domestic laundry 6.4E-05 - - - 6.4E-05 - - -Dermal contact with groundwater residues after washing clothes 3.4E-03 2.3E-02 - - 3.4E-03 2.3E-02 - -Dermal contact with groundwater during household cleaning 2.2E-05 2.9E-05 - - 2.2E-05 2.9E-05 - -Incidental ingestion of groundwater residues after washing floors - 1.3E+00 - - - 1.3E+00 - -Dermal contact with groundwater residues after washing floors - 2.3E-02 - - - 2.3E-02 - -Dermal contact with groundwater during sprinkler play 3.8E-04 5.0E-04 3.8E-04 5.0E-04 - - 3.8E-04 5.0E-04Dermal contact with groundwater during washing of animals 5.9E-04 4.1E-05 5.9E-04 4.1E-05 - - 5.9E-04 4.1E-05Dermal contact with groundwater during washing of vehicles 9.8E-05 - 9.8E-05 - - - 9.8E-05 -Dermal contact with groundwater during irrigation 6.9E-04 9.5E-05 6.9E-04 9.5E-05 - - 6.9E-04 9.5E-05Dermal contact with groundwater residues after washing companion animals 4.0E-02 2.3E-01 4.0E-02 2.3E-01 - - 4.0E-02 2.3E-01Incidental ingestion of groundwater residues after washing companion animals 1.1E+00 3.9E-01 1.1E+00 3.9E-01 - - 1.1E+00 3.9E-01Dermal contact with groundwater used in home swimming pools 1.1E-03 6.3E-04 1.1E-03 6.3E-04 - - 1.1E-03 6.3E-04

DIETARY EXPOSURE PATHWAYSIngestion of finfish from the Site 1.7E-02 4.0E-02 1.7E-02 4.0E-02 1.7E-02 4.0E-02 1.7E-02 4.0E-02Ingestion of breast milk by infants - - - - - - - -Ingestion of home grown beef 1.4E-01 3.3E-01 1.4E-01 3.3E-01 - - - -Ingestion of home grown livestock milk - - - - - - - -Ingestion of home grown eggs - - - - - - - -Ingestion of home grown fruit - - - - - - - -Ingestion of home grown green vegetables - - - - - - - -Ingestion of home grown lamb - - - - - - - -Ingestion of rabbit meat - - - - - - - -Ingestion of crustaceans and oysters 8.4E-03 4.6E-03 8.4E-03 4.6E-03 8.4E-03 4.6E-03 8.4E-03 4.6E-03

TOTAL 1.36E+01 4.02E+01 1.03E+01 2.30E+01 3.35E+00 1.72E+01 1.02E+01 2.27E+01

Scenario 4.1a Southern Area


Scenario 5.1a Southern Area

Threshold Risk EstimatesExposure Pathway Threshold Risk Estimates Threshold Risk Estimates

Scenario 2.1a Southern Area Scenario 3.1a Southern Area



Scenario 2.1b, 3.1b, 4.1b and 5.1b - Southern Area


Groundwater(mg/L)

Cattle Meat(mg/kg)

Finfish(mg/kg)


(mg/kg)

Site: RAAF Base Williamtown Perfluorooctane Sulfonate (PFOS) 0.0901 0.0982 modelled 0.00225 0.0022Address: RAAF Base Williamtown, NSW Perfluorooctanoic Acid (PFOA) 0.0035 0.00294 modelled 0.0003Client: Department of Defence Perfluorohexane Sulphonate (PFHxS) 0.012 0.0186 modelledScenario: Scenario 2.1b, 3.1b, 4.1b and 5.1b - Southern Area Perfluorohexanoic Acid (PFHxA) 0.0008 0.00805 modelled




















Dermal contact with surface water during swimming in creeks/riversDietary Pathways

Ingestion of home grown eggsx Ingestion of finfish




Soil (mg/kg)







Calculation of Surface Loading on Floors Following CleaningRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.1b, 3.1b, 4.1b and 5.1b - Southern Area Scenario


Floor Area m2


Water (C)


Surfaceloading on

floor

mg/L L/cm2 mg/cm2


Chemical

10.0

1.25




Calculation of Concentrations in Cattle Meat (Steer) Based on Environmental ConcentrationsRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.1b, 3.1b, 4.1b and 5.1b - Southern Area Scenario







SoilConcentration

(Cs)


(Cp)



(CDIlivestock)


Beef SteerVolume of

Distribution(Vd)




Serum Ratio(TSR)



Perfluorooctane Sulfonate (PFOS) 9.0E-02 1.7E-03 7.2E-04 1.14E+02 2.10E-01 5.66E-01 1.00E-01 1.47E-02Perfluorooctanoic Acid (PFOA) 3.5E-03 1.2E-04 3.8E-05 8.00E-01 2.10E-01 2.11E-04 1.00E-01 5.50E-06Perfluorohexane Sulphonate (PFHxS) 1.2E-02 3.0E-03 6.2E-04 - - - - -Perfluorohexanoic Acid (PFHxA) 8.0E-04 9.9E-04 1.9E-04 - - - - -

Notes:1. Groundwater concentrations reported at residential properties.

Chemical




Health Risk Calculations - Incidental Soil IngestionRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.1b, 3.1b, 4.1b and 5.1b - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 3.90E-03 1.82E-02



Factor




Health Risk Calculations - Dermal Contact with SoilRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.1b, 3.1b, 4.1b and 5.1b - Southern Area Scenario


Adult IntakeFactor

(threshold)


Hazard Index(Adult)

Child IntakeFactor

(threshold)


Hazard Index(Child)



TOTAL 1.23E-04 1.71E-04



DermalAbsorption

Factor (DAF)




Health Risk Calculations - Inhalation of Soil-Derived Dust (Particulates) in Indoor AirRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.1b, 3.1b, 4.1b and 5.1b - Southern Area Scenario





Hazard Index(Adult)




Hazard Index(Child)



TOTAL 8.80E-06 7.17E-06




Surface Soil)




Health Risk Calculations - Inhalation of Soil-Derived Dust (Particulates) in Outdoor AirRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.1b, 3.1b, 4.1b and 5.1b - Southern Area Scenario



(threshold)



Hazard Index(Adult)




Hazard Index(Child)



TOTAL 2.37E-09 1.58E-09








Health Risk Calculations - Ingestion of FinfishRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.1b, 3.1b, 4.1b and 5.1b - Southern Area Scenario


Adult IntakeFactor

(threshold)


Hazard Index(Adult)



Hazard Index(Child)



TOTAL 5.67E-03 1.32E-02

ChemicalFish


Factor





Health Risk Calculations - Incidental ingestion of groundwater during showering/bathingRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.1b, 3.1b, 4.1b and 5.1b - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)


Perfluorooctane Sulfonate (PFOS) 0.0982 1.86E-05 2.86E-05 2.81E-06 1.51E-01 2.67E-04 2.62E-05 1.41E+00Perfluorooctanoic Acid (PFOA) 0.00294 1.59E-04 2.86E-05 8.40E-08 5.28E-04 2.67E-04 7.84E-07 4.92E-03Perfluorohexane Sulphonate (PFHxS) 0.0186 2.00E-05 2.86E-05 5.31E-07 2.66E-02 2.67E-04 4.96E-06 2.48E-01Perfluorohexanoic Acid (PFHxA) 0.00805 1.00E-01 2.86E-05 2.30E-07 2.30E-06 2.67E-04 2.15E-06 2.15E-05

TOTAL 1.78E-01 1.66E+00






Health Risk Calculations - Dermal contact with groundwater during showering/bathingRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.1b, 3.1b, 4.1b and 5.1b - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.42E-04 2.03E-04







Health Risk Calculations - Incidental ingestion of groundwater during food preparation and cleanupRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.1b, 3.1b, 4.1b and 5.1b - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.07E-01






Health Risk Calculations - Dermal contact with groundwater during food preparation and cleanupRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.1b, 3.1b, 4.1b and 5.1b - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 8.54E-05







Health Risk Calculations - Incidental ingestion of groundwater during domestic laundryRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.1b, 3.1b, 4.1b and 5.1b - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.14E-02






Health Risk Calculations - Dermal contact with groundwater during domestic laundryRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.1b, 3.1b, 4.1b and 5.1b - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 9.13E-06







Health Risk Calculations - Dermal Contact with residues in clothes after washing with groundwaterRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.1b, 3.1b, 4.1b and 5.1b - Southern Area Scenario

Oral RfD(Background

Corrected)



Hazard Index(Adult)



Hazard Index(Child)



TOTAL 3.38E-03 9.20E-03



Water







Health Risk Calculations - Incidental ingestion of groundwater during household cleaningRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.1b, 3.1b, 4.1b and 5.1b - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 6.97E-03 3.25E-02






Health Risk Calculations - Dermal contact with groundwater during household cleaningRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.1b, 3.1b, 4.1b and 5.1b - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 5.58E-06 7.28E-06







Health Risk Calculations - Incidental Ingestion via Hand to Mouth Transfer of Residues on Floors After CleaningRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.1b, 3.1b, 4.1b and 5.1b - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 2.13E-01

Chemical







Health Risk Calculations - Dermal Contact with residues on floors after cleaningRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.1b, 3.1b, 4.1b and 5.1b - Southern Area Scenario


Adult IntakeFactor

(threshold)


Hazard Index(Adult)



Hazard Index(Child)



TOTAL 4.51E-03

Chemical


in Water



factor




Health Risk Calculations - Incidental ingestion of groundwater during sprinkler playRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.1b, 3.1b, 4.1b and 5.1b - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 3.96E-02 6.60E-01






Health Risk Calculations - Dermal contact with groundwater during sprinkler playRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.1b, 3.1b, 4.1b and 5.1b - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 6.34E-05 1.61E-04







Health Risk Calculations - Incidental ingestion of groundwater during washing of animalsRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.1b, 3.1b, 4.1b and 5.1b - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.39E-02 1.08E-02






Health Risk Calculations - Dermal contact with groundwater during washing of animalsRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.1b, 3.1b, 4.1b and 5.1b - Southern Area Scenario


Adult IntakeFactor

(threshold)


Hazard Index(Adult)

Child IntakeFactor

(threshold)


Hazard Index(Child)



TOTAL 3.25E-05 6.80E-06







Health Risk Calculations - Incidental Ingestion via Hand to Mouth Transfer of Residues on Animals after washing with groundwaterRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.1b, 3.1b, 4.1b and 5.1b - Southern Area Scenario








Hazard Index(Adult)



Hazard Index(Child)



TOTAL 3.12E-01 8.07E-02

Chemical


Water



Factor






Adult IntakeFactor

(threshold)


Hazard Index(Adult)

Child IntakeFactor

(threshold)


Hazard Index(Child)



TOTAL 1.25E-02 4.07E-02

Chemical


Water

DermalAbsorption

factor










Hazard Index(Adult)



Hazard Index(Child)



TOTAL 6.97E-03






Health Risk Calculations - Dermal contact with groundwater during washing of vehiclesRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.1b, 3.1b, 4.1b and 5.1b - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.63E-05







Health Risk Calculations - Incidental ingestion of groundwater during irrigationRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.1b, 3.1b, 4.1b and 5.1b - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 5.58E-02 2.89E-02






Health Risk Calculations - Dermal contact with groundwater during irrigationRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.1b, 3.1b, 4.1b and 5.1b - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.30E-04 1.81E-05







Health Risk Calculations - Incidental ingestion of groundwater used in home swimming poolsRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.1b, 3.1b, 4.1b and 5.1b - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.58E-01 1.32E+00






Health Risk Calculations - Dermal contact with groundwater used in home swimming poolsRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.1b, 3.1b, 4.1b and 5.1b - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.27E-04 1.61E-04







Health Risk Calculations - Ingestion of EggsRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.1b, 3.1b, 4.1b and 5.1b - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL






Health Risk Calculations - Ingestion of Crustaceans and OsytersRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.1b, 3.1b, 4.1b and 5.1b - Southern Area Scenario


Adult IntakeFactor

(threshold)


Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.30E-03 8.01E-05

Chemical


Concentration






Health Risk Calculations - Ingestion of Cattle Muscle Tissue (Beef)RAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.1b, 3.1b, 4.1b and 5.1b - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.63E-02 3.77E-02

Chemical


Steer)


OralBioavailability

Factor




Summary of Estimated Health RisksRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.1b, 3.1b, 4.1b and 5.1b - Southern Area Scenario



GROUNDWATER EXPOSURE PATHWAYSIngestion of Potable Groundwater - - - - - - - -Inhalation of Groundwater-Derived Vapours in Indoor Air - - - - - - - -Inhalation of Groundwater-Derived Vapours in Outdoor Air - - - - - - - -Inhalation of Groundwater Vapours (Where GW Enters Trench) - - - - - - - -Inhalation of Groundwater Derived Vapours from Shower/ Irrigation - - - - - - - -Vapours from Flowing Water - - - - - - - -Incidental Ingestion of Groundwater (Bathing or Excavation) - - - - - - - -Dermal Contact with Groundwater (Bathing or Excavation) - - - - - - - -Incidental ingestion of groundwater during showering/bathing 1.8E-01 1.7E+00 - - 1.8E-01 1.7E+00 - -Incidental ingestion of groundwater during food preparation and cleanup 1.1E-01 - - - 1.1E-01 - - -Incidental ingestion of groundwater during domestic laundry 1.1E-02 - - - 1.1E-02 - - -Incidental ingestion of groundwater during household cleaning 7.0E-03 3.3E-02 - - 7.0E-03 3.3E-02 - -Incidental ingestion of groundwater during sprinkler play 4.0E-02 6.6E-01 4.0E-02 6.6E-01 - - 4.0E-02 6.6E-01Incidental ingestion of groundwater during washing of animals 1.4E-02 1.1E-02 1.4E-02 1.1E-02 - - 1.4E-02 1.1E-02Incidental ingestion of groundwater during washing of vehicles 7.0E-03 - 7.0E-03 - - - 7.0E-03 -Incidental ingestion of groundwater during irrigation 5.6E-02 2.9E-02 5.6E-02 2.9E-02 - - 5.6E-02 2.9E-02Incidental ingestion of groundwater used in home swimming pools 1.6E-01 1.3E+00 1.6E-01 1.3E+00 - - 1.6E-01 1.3E+00Dermal contact with groundwater during showering/bathing 1.4E-04 2.0E-04 - - 1.4E-04 2.0E-04 - -Dermal contact with groundwater during food preparation and cleanup 8.5E-05 - - - 8.5E-05 - - -Dermal contact with groundwater during domestic laundry 9.1E-06 - - - 9.1E-06 - - -Dermal contact with groundwater residues after washing clothes 3.4E-03 9.2E-03 - - 3.4E-03 9.2E-03 - -Dermal contact with groundwater during household cleaning 5.6E-06 7.3E-06 - - 5.6E-06 7.3E-06 - -Incidental ingestion of groundwater residues after washing floors - 2.1E-01 - - - 2.1E-01 - -Dermal contact with groundwater residues after washing floors - 4.5E-03 - - - 4.5E-03 - -Dermal contact with groundwater during sprinkler play 6.3E-05 1.6E-04 6.3E-05 1.6E-04 - - 6.3E-05 1.6E-04Dermal contact with groundwater during washing of animals 3.3E-05 6.8E-06 3.3E-05 6.8E-06 - - 3.3E-05 6.8E-06Dermal contact with groundwater during washing of vehicles 1.6E-05 - 1.6E-05 - - - 1.6E-05 -Dermal contact with groundwater during irrigation 1.3E-04 1.8E-05 1.3E-04 1.8E-05 - - 1.3E-04 1.8E-05Dermal contact with groundwater residues after washing companion animals 1.2E-02 4.1E-02 1.2E-02 4.1E-02 - - 1.2E-02 4.1E-02Incidental ingestion of groundwater residues after washing companion animals 3.1E-01 8.1E-02 3.1E-01 8.1E-02 - - 3.1E-01 8.1E-02Dermal contact with groundwater used in home swimming pools 1.3E-04 1.6E-04 1.3E-04 1.6E-04 - - 1.3E-04 1.6E-04


TOTAL 9.33E-01 4.13E+00 6.26E-01 2.21E+00 3.14E-01 1.93E+00 6.10E-01 2.17E+00

Scenario 4.1b - Southern Area




Scenario 2.1b - Southern Area Scenario 3.1b - Southern Area

Client Name: Department of DefenceProject Name: Human Health Risk Assessment




Sediment(mg/kg)

SurfaceWater (mg/L)

Groundwater(mg/L)

Cattle Meat(mg/kg)

Finfish(mg/kg)


(mg/kg)

Site: RAAF Base Williamtown Perfluorooctane Sulfonate (PFOS) 0.15 0.013 0.00373 0.0982 modelled 0.00225 0.0022Address: RAAF Base Williamtown, NSW Perfluorooctanoic Acid (PFOA) 0.005 0.00008 0.00294 modelled 0.0003Client: Department of Defence Perfluorohexane Sulphonate (PFHxS) 0.015 0.00347 0.0186 modelledScenario: Scenario 2.2a, 3.2a, 4.2a and 5.2a - Southern Area Perfluorohexanoic Acid (PFHxA) 0.004 0.0007 0.00805 modelled























































x Ingestion of beef

Ingestion of lamb

Ingestion of rabbit





Soil (mg/kg)







Calculation of Surface Loading on Floors Following CleaningRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.2a, 3.2a, 4.2a and 5.2a - Southern Area Scenario


Floor Area m2


Water (C)


Surfaceloading on

floor

mg/L L/cm2 mg/cm2


Chemical

10.0

1.25




Calculation of Concentrations in Cattle Meat (Steer) Based on Environmental ConcentrationsRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.2a, 3.2a, 4.2a and 5.2a - Southern Area Scenario







SoilConcentration

(Cs)


(Cp)

Surface water Concentration(Cw)1


(CDIlivestock)


Beef SteerVolume of

Distribution(Vd)




Serum Ratio(TSR)





Chemical




Health Risk Calculations - Incidental Soil IngestionRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.2a, 3.2a, 4.2a and 5.2a - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 7.58E-03 5.90E-02



Factor




Health Risk Calculations - Dermal Contact with SoilRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.2a, 3.2a, 4.2a and 5.2a - Southern Area Scenario


Adult IntakeFactor

(threshold)


Hazard Index(Adult)

Child IntakeFactor

(threshold)


Hazard Index(Child)



TOTAL 6.77E-04 9.43E-04



DermalAbsorption

Factor (DAF)




Health Risk Calculations - Inhalation of Soil-Derived Dust (Particulates) in Indoor AirRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.2a, 3.2a, 4.2a and 5.2a - Southern Area Scenario





Hazard Index(Adult)




Hazard Index(Child)



TOTAL 1.42E-05 1.42E-05




Surface Soil)




Health Risk Calculations - Inhalation of Soil-Derived Dust (Particulates) in Outdoor AirRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.2a, 3.2a, 4.2a and 5.2a - Southern Area Scenario



(threshold)



Hazard Index(Adult)




Hazard Index(Child)



TOTAL 5.10E-09 5.10E-09








Health Risk Calculations - Ingestion of FinfishRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.2a, 3.2a, 4.2a and 5.2a - Southern Area Scenario


Adult IntakeFactor

(threshold)


Hazard Index(Adult)



Hazard Index(Child)



TOTAL 3.96E-02 9.26E-02

ChemicalFish


Factor





Health Risk Calculations - Incidental ingestion of groundwater during showering/bathingRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.2a, 3.2a, 4.2a and 5.2a - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 2.78E+00 1.56E+01






Health Risk Calculations - Dermal contact with groundwater during showering/bathingRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.2a, 3.2a, 4.2a and 5.2a - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 4.45E-04 6.33E-04







Health Risk Calculations - Incidental ingestion of groundwater during food preparation and cleanupRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.2a, 3.2a, 4.2a and 5.2a - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 3.56E-01






Health Risk Calculations - Dermal contact with groundwater during food preparation and cleanupRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.2a, 3.2a, 4.2a and 5.2a - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.71E-04







Health Risk Calculations - Incidental ingestion of groundwater during domestic laundryRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.2a, 3.2a, 4.2a and 5.2a - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.33E-01






Health Risk Calculations - Dermal contact with groundwater during domestic laundryRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.2a, 3.2a, 4.2a and 5.2a - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 6.41E-05







Health Risk Calculations - Dermal Contact with residues in clothes after washing with groundwaterRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.2a, 3.2a, 4.2a and 5.2a - Southern Area Scenario

Oral RfD(Background

Corrected)



Hazard Index(Adult)



Hazard Index(Child)



TOTAL 3.38E-03 2.30E-02



Water







Health Risk Calculations - Incidental ingestion of groundwater during household cleaningRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.2a, 3.2a, 4.2a and 5.2a - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 4.65E-02 2.17E-01






Health Risk Calculations - Dermal contact with groundwater during household cleaningRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.2a, 3.2a, 4.2a and 5.2a - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 2.23E-05 2.91E-05







Health Risk Calculations - Incidental Ingestion via Hand to Mouth Transfer of Residues on Floors After CleaningRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.2a, 3.2a, 4.2a and 5.2a - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.34E+00

Chemical









Adult IntakeFactor

(threshold)


Hazard Index(Adult)



Hazard Index(Child)



TOTAL 2.26E-02

Chemical


in Water



factor




Health Risk Calculations - Incidental ingestion of groundwater during sprinkler playRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.2a, 3.2a, 4.2a and 5.2a - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.19E+00 6.18E+00






Health Risk Calculations - Dermal contact with groundwater during sprinkler playRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.2a, 3.2a, 4.2a and 5.2a - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 3.80E-04 5.02E-04











Hazard Index(Adult)



Hazard Index(Child)



TOTAL 4.18E-01 1.08E-01






Health Risk Calculations - Dermal contact with groundwater during washing of animalsRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.2a, 3.2a, 4.2a and 5.2a - Southern Area Scenario


Adult IntakeFactor

(threshold)


Hazard Index(Adult)

Child IntakeFactor

(threshold)


Hazard Index(Child)



TOTAL 5.86E-04 4.08E-05







Health Risk Calculations - Incidental Ingestion via Hand to Mouth Transfer of Residues on Animals after washing with groundwaterRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.2a, 3.2a, 4.2a and 5.2a - Southern Area Scenario





Oral RfD(Background

Corrected)



Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.05E+00 3.86E-01

Chemical


Water



Factor





Oral RfD(Background

Corrected)

Adult IntakeFactor

(threshold)


Hazard Index(Adult)

Child IntakeFactor

(threshold)


Hazard Index(Child)



TOTAL 4.05E-02 2.34E-01

Chemical


Water

DermalAbsorption

factor







Oral RfD(Background

Corrected)



Hazard Index(Adult)



Hazard Index(Child)



TOTAL 6.97E-02

ChemicalGroundwater

Concentration





Health Risk Calculations - Dermal contact with groundwater during washing of vehiclesRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.2a, 3.2a, 4.2a and 5.2a - Southern Area Scenario

Dermal RfD(Background

Corrected)



Hazard Index(Adult)



Hazard Index(Child)



TOTAL 9.76E-05

ChemicalGroundwater

Concentration

DermalPermeability

Constant (kp)





Health Risk Calculations - Incidental ingestion of groundwater during irrigationRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.2a, 3.2a, 4.2a and 5.2a - Southern Area Scenario

Oral RfD(Background

Corrected)



Hazard Index(Adult)



Hazard Index(Child)



TOTAL 4.89E-01 2.54E-01

ChemicalGroundwater

Concentration





Health Risk Calculations - Dermal contact with groundwater during irrigationRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.2a, 3.2a, 4.2a and 5.2a - Southern Area Scenario


Corrected)



Hazard Index(Adult)



Hazard Index(Child)



TOTAL 6.85E-04 9.55E-05

ChemicalGroundwater

Concentration

DermalPermeability

Constant (kp)





Health Risk Calculations - Incidental ingestion of groundwater used in home swimming poolsRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.2a, 3.2a, 4.2a and 5.2a - Southern Area Scenario

Oral RfD(Background

Corrected)



Hazard Index(Adult)



Hazard Index(Child)



TOTAL 6.86E+00 1.54E+01

ChemicalGroundwater

Concentration





Health Risk Calculations - Dermal contact with groundwater used in home swimming poolsRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.2a, 3.2a, 4.2a and 5.2a - Southern Area Scenario


Corrected)



Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.10E-03 6.28E-04

ChemicalGroundwater

Concentration

DermalPermeability

Constant (kp)





Health Risk Calculations - Incidental Sediment IngestionRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.2a, 3.2a, 4.2a and 5.2a - Southern Area Scenario

Oral RfD(Background

Corrected)



Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.71E-04 3.32E-04

ChemicalSediment







Health Risk Calculations - Dermal Contact with SedimentRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.2a, 3.2a, 4.2a and 5.2a - Southern Area Scenario


Corrected)

Adult IntakeFactor

(threshold)


Hazard Index(Adult)

Child IntakeFactor

(threshold)


Hazard Index(Child)



TOTAL 9.33E-06 2.69E-06

ChemicalSediment

Concentration

DermalAbsorption

Factor (DAF)





Health Risk Calculations - Dermal contact with surface water during fishingRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.2a, 3.2a, 4.2a and 5.2a - Southern Area Scenario


Corrected)



Hazard Index(Adult)



Hazard Index(Child)



- - - - - - - - -

TOTAL 3.84E-05 3.01E-06


DermalPermeability

Constant (kp)





Health Risk Calculations - Incidental ingestion of surface water water during fishingRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.2a, 3.2a, 4.2a and 5.2a - Southern Area Scenario

Oral RfD(Background

Corrected)



Hazard Index(Adult)



Hazard Index(Child)



TOTAL 5.93E-02 1.73E-02






Health Risk Calculations - Ingestion of EggsRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.2a, 3.2a, 4.2a and 5.2a - Southern Area Scenario

Oral RfD(Background

Corrected)



Hazard Index(Adult)



Hazard Index(Child)



TOTAL






Health Risk Calculations - Ingestion of Crustaceans and OsytersRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.2a, 3.2a, 4.2a and 5.2a - Southern Area Scenario

Oral RfD(Background

Corrected)

Adult IntakeFactor

(threshold)


Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.97E-02 1.07E-02

Chemical


Concentration






Health Risk Calculations - Ingestion of Cattle Muscle Tissue (Beef)RAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.2a, 3.2a, 4.2a and 5.2a - Southern Area Scenario

Oral RfD(Background

Corrected)



Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.38E-01 3.26E-01

Chemical


Steer)


OralBioavailability

Factor




Summary of Estimated Health RisksRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.2a, 3.2a, 4.2a and 5.2a - Southern Area Scenario



SEDIMENT EXPOSURE PATHWAYSIncidental ingestion of sediment 1.7E-04 3.3E-04 1.7E-04 3.3E-04 1.7E-04 3.3E-04 1.7E-04 3.3E-04Dermal contact with sediment 9.3E-06 2.7E-06 9.3E-06 2.7E-06 9.3E-06 2.7E-06 9.3E-06 2.7E-06

GROUNDWATER EXPOSURE PATHWAYSIngestion of Potable Groundwater - - - - - - - -Inhalation of Groundwater-Derived Vapours in Indoor Air - - - - - - - -Inhalation of Groundwater-Derived Vapours in Outdoor Air - - - - - - - -Inhalation of Groundwater Vapours (Where GW Enters Trench) - - - - - - - -Inhalation of Groundwater Derived Vapours from Shower/ Irrigation - - - - - - - -Vapours from Flowing Water - - - - - - - -Incidental Ingestion of Groundwater (Bathing or Excavation) - - - - - - - -Dermal Contact with Groundwater (Bathing or Excavation) - - - - - - - -Incidental ingestion of groundwater during showering/bathing 2.8E+00 1.6E+01 - - 2.8E+00 1.6E+01 - -Incidental ingestion of groundwater during food preparation and cleanup 3.6E-01 - - - 3.6E-01 - - -Incidental ingestion of groundwater during domestic laundry 1.3E-01 - - - 1.3E-01 - - -Incidental ingestion of groundwater during household cleaning 4.6E-02 2.2E-01 - - 4.6E-02 2.2E-01 - -Incidental ingestion of groundwater during sprinkler play 1.2E+00 6.2E+00 1.2E+00 6.2E+00 - - 1.2E+00 6.2E+00Incidental ingestion of groundwater during washing of animals 4.2E-01 1.1E-01 4.2E-01 1.1E-01 - - 4.2E-01 1.1E-01Incidental ingestion of groundwater during washing of vehicles 7.0E-02 - 7.0E-02 - - - 7.0E-02 -Incidental ingestion of groundwater during irrigation 4.9E-01 2.5E-01 4.9E-01 2.5E-01 - - 4.9E-01 2.5E-01Incidental ingestion of groundwater used in home swimming pools 6.9E+00 1.5E+01 6.9E+00 1.5E+01 - - 6.9E+00 1.5E+01Dermal contact with groundwater during showering/bathing 4.4E-04 6.3E-04 - - 4.4E-04 6.3E-04 - -Dermal contact with groundwater during food preparation and cleanup 1.7E-04 - - - 1.7E-04 - - -Dermal contact with groundwater during domestic laundry 6.4E-05 - - - 6.4E-05 - - -Dermal contact with groundwater residues after washing clothes 3.4E-03 2.3E-02 - - 3.4E-03 2.3E-02 - -Dermal contact with groundwater during household cleaning 2.2E-05 2.9E-05 - - 2.2E-05 2.9E-05 - -Incidental ingestion of groundwater residues after washing floors - 1.3E+00 - - - 1.3E+00 - -Dermal contact with groundwater residues after washing floors - 2.3E-02 - - - 2.3E-02 - -Dermal contact with groundwater during sprinkler play 3.8E-04 5.0E-04 3.8E-04 5.0E-04 - - 3.8E-04 5.0E-04Dermal contact with groundwater during washing of animals 5.9E-04 4.1E-05 5.9E-04 4.1E-05 - - 5.9E-04 4.1E-05Dermal contact with groundwater during washing of vehicles 9.8E-05 - 9.8E-05 - - - 9.8E-05 -Dermal contact with groundwater during irrigation 6.9E-04 9.5E-05 6.9E-04 9.5E-05 - - 6.9E-04 9.5E-05Dermal contact with groundwater residues after washing companion animals 4.0E-02 2.3E-01 4.0E-02 2.3E-01 - - 4.0E-02 2.3E-01Incidental ingestion of groundwater residues after washing companion animals 1.1E+00 3.9E-01 1.1E+00 3.9E-01 - - 1.1E+00 3.9E-01Dermal contact with groundwater used in home swimming pools 1.1E-03 6.3E-04 1.1E-03 6.3E-04 - - 1.1E-03 6.3E-04

SURFACE WATER EXPOSURE PATHWAYSIncidental ingestion of surface water during fishing 5.9E-02 1.7E-02 5.9E-02 1.7E-02 5.9E-02 1.7E-02 5.9E-02 1.7E-02Incidental ingestion of surface water during boating - - - - - - - -Incidental ingestion of surface water during swimming in creeks/rivers - - - - - - - -Dermal contact with surface water during fishing 3.8E-05 3.0E-06 3.8E-05 3.0E-06 3.8E-05 3.0E-06 3.8E-05 3.0E-06Dermal contact with surface water during boating - - - - - - - -Dermal contact with surface water during swimming in creeks/rivers - - - - - - - -


TOTAL 1.37E+01 4.03E+01 1.04E+01 2.31E+01 3.44E+00 1.73E+01 1.02E+01 2.28E+01

Scenario 4.2a - Southern Area




Scenario 2.2a - Southern Area Scenario 3.2a - Southern Area





Sediment(mg/kg)

SurfaceWater (mg/L)

Groundwater(mg/L)

Cattle Meat(mg/kg)

Finfish(mg/kg)


(mg/kg)

Site: RAAF Base Williamtown Perfluorooctane Sulfonate (PFOS) 0.0901 0.0094 0.001581 0.0982 modelled 0.00225 0.0022Address: RAAF Base Williamtown, NSW Perfluorooctanoic Acid (PFOA) 0.0035 0.000376 0.00294 modelled 0.0003Client: Department of Defence Perfluorohexane Sulphonate (PFHxS) 0.012 0.002439 0.0186 modelledScenario: Scenario 2.2b, 3.2b, 4.2b and 5.2b - Southern Area Perfluorohexanoic Acid (PFHxA) 0.0008 0.000342 0.00805 modelled























































x Ingestion of beef

Ingestion of lamb

Ingestion of rabbit





Soil (mg/kg)







Calculation of Surface Loading on Floors Following CleaningRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.2b, 3.2b, 4.2b and 5.2b - Southern Area Scenario


Floor Area m2


Water (C)


Surfaceloading on

floor

mg/L L/cm2 mg/cm2


Chemical

10.0

1.25




Calculation of Concentrations in Cattle Meat (Steer) Based on Environmental ConcentrationsRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.2b, 3.2b, 4.2b and 5.2b - Southern Area Scenario







SoilConcentration

(Cs)


(Cp)



(CDIlivestock)


Beef SteerVolume of

Distribution(Vd)




Serum Ratio(TSR)





Chemical




Health Risk Calculations - Incidental Soil IngestionRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.2b, 3.2b, 4.2b and 5.2b - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 3.90E-03 1.82E-02



Factor




Health Risk Calculations - Dermal Contact with SoilRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.2b, 3.2b, 4.2b and 5.2b - Southern Area Scenario


Adult IntakeFactor

(threshold)


Hazard Index(Adult)

Child IntakeFactor

(threshold)


Hazard Index(Child)



TOTAL 1.23E-04 1.71E-04



DermalAbsorption

Factor (DAF)




Health Risk Calculations - Inhalation of Soil-Derived Dust (Particulates) in Indoor AirRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.2b, 3.2b, 4.2b and 5.2b - Southern Area Scenario





Hazard Index(Adult)




Hazard Index(Child)



TOTAL 8.80E-06 7.17E-06




Surface Soil)




Health Risk Calculations - Inhalation of Soil-Derived Dust (Particulates) in Outdoor AirRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.2b, 3.2b, 4.2b and 5.2b - Southern Area Scenario



(threshold)



Hazard Index(Adult)




Hazard Index(Child)



TOTAL 2.37E-09 1.58E-09








Health Risk Calculations - Ingestion of FinfishRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.2b, 3.2b, 4.2b and 5.2b - Southern Area Scenario


Adult IntakeFactor

(threshold)


Hazard Index(Adult)



Hazard Index(Child)



TOTAL 8.50E-03 1.98E-02

ChemicalFish


Factor





Health Risk Calculations - Incidental ingestion of groundwater during showering/bathingRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.2b, 3.2b, 4.2b and 5.2b - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.78E-01 1.66E+00






Health Risk Calculations - Dermal contact with groundwater during showering/bathingRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.2b, 3.2b, 4.2b and 5.2b - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.42E-04 2.03E-04







Health Risk Calculations - Incidental ingestion of groundwater during food preparation and cleanupRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.2b, 3.2b, 4.2b and 5.2b - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.07E-01






Health Risk Calculations - Dermal contact with groundwater during food preparation and cleanupRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.2b, 3.2b, 4.2b and 5.2b - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 8.54E-05







Health Risk Calculations - Incidental ingestion of groundwater during domestic laundryRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.2b, 3.2b, 4.2b and 5.2b - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.14E-02






Health Risk Calculations - Dermal contact with groundwater during domestic laundryRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.2b, 3.2b, 4.2b and 5.2b - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 9.13E-06







Health Risk Calculations - Dermal Contact with residues in clothes after washing with groundwaterRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.2b, 3.2b, 4.2b and 5.2b - Southern Area Scenario

Oral RfD(Background

Corrected)



Hazard Index(Adult)



Hazard Index(Child)



TOTAL 3.38E-03 9.20E-03



Water







Health Risk Calculations - Incidental ingestion of groundwater during household cleaningRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.2b, 3.2b, 4.2b and 5.2b - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 6.97E-03 3.25E-02






Health Risk Calculations - Dermal contact with groundwater during household cleaningRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.2b, 3.2b, 4.2b and 5.2b - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 5.58E-06 7.28E-06







Health Risk Calculations - Incidental Ingestion via Hand to Mouth Transfer of Residues on Floors After CleaningRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.2b, 3.2b, 4.2b and 5.2b - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 2.13E-01

Chemical









Adult IntakeFactor

(threshold)


Hazard Index(Adult)



Hazard Index(Child)



TOTAL 4.51E-03

Chemical


in Water



factor




Health Risk Calculations - Incidental ingestion of groundwater during sprinkler playRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.2b, 3.2b, 4.2b and 5.2b - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 3.96E-02 6.60E-01






Health Risk Calculations - Dermal contact with groundwater during sprinkler playRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.2b, 3.2b, 4.2b and 5.2b - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 6.34E-05 1.61E-04











Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.39E-02 1.08E-02






Health Risk Calculations - Dermal contact with groundwater during washing of animalsRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.2b, 3.2b, 4.2b and 5.2b - Southern Area Scenario


Adult IntakeFactor

(threshold)


Hazard Index(Adult)

Child IntakeFactor

(threshold)


Hazard Index(Child)



TOTAL 3.25E-05 6.80E-06







Health Risk Calculations - Incidental Ingestion via Hand to Mouth Transfer of Residues on Animals after washing with groundwaterRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.2b, 3.2b, 4.2b and 5.2b - Southern Area Scenario





Oral RfD(Background

Corrected)



Hazard Index(Adult)



Hazard Index(Child)



TOTAL 3.12E-01 8.07E-02

Chemical


Water



Factor






Adult IntakeFactor

(threshold)


Hazard Index(Adult)

Child IntakeFactor

(threshold)


Hazard Index(Child)



TOTAL 1.25E-02 4.07E-02

Chemical


Water

DermalAbsorption

factor










Hazard Index(Adult)



Hazard Index(Child)



TOTAL 6.97E-03






Health Risk Calculations - Dermal contact with groundwater during washing of vehiclesRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.2b, 3.2b, 4.2b and 5.2b - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.63E-05







Health Risk Calculations - Incidental ingestion of groundwater during irrigationRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.2b, 3.2b, 4.2b and 5.2b - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 5.58E-02 2.89E-02






Health Risk Calculations - Dermal contact with groundwater during irrigationRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.2b, 3.2b, 4.2b and 5.2b - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.30E-04 1.81E-05







Health Risk Calculations - Incidental ingestion of groundwater used in home swimming poolsRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.2b, 3.2b, 4.2b and 5.2b - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.58E-01 1.32E+00






Health Risk Calculations - Dermal contact with groundwater used in home swimming poolsRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.2b, 3.2b, 4.2b and 5.2b - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.27E-04 1.61E-04







Health Risk Calculations - Incidental Sediment IngestionRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.2b, 3.2b, 4.2b and 5.2b - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 5.14E-05 6.00E-05

ChemicalSediment







Health Risk Calculations - Dermal Contact with SedimentRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.2b, 3.2b, 4.2b and 5.2b - Southern Area Scenario


Adult IntakeFactor

(threshold)


Hazard Index(Adult)

Child IntakeFactor

(threshold)


Hazard Index(Child)



TOTAL 2.97E-06 4.76E-07

ChemicalSediment

Concentration

DermalAbsorption

Factor (DAF)





Health Risk Calculations - Dermal contact with surface water during fishingRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.2b, 3.2b, 4.2b and 5.2b - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



- - - - - - - - -

TOTAL 9.44E-07 7.40E-08







Health Risk Calculations - Incidental ingestion of surface water water during fishingRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.2b, 3.2b, 4.2b and 5.2b - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 4.86E-04 1.42E-04






Health Risk Calculations - Ingestion of EggsRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.2b, 3.2b, 4.2b and 5.2b - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL






Health Risk Calculations - Ingestion of Crustaceans and OsytersRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.2b, 3.2b, 4.2b and 5.2b - Southern Area Scenario


Adult IntakeFactor

(threshold)


Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.96E-03 1.20E-04

Chemical


Concentration






Health Risk Calculations - Ingestion of Cattle Muscle Tissue (Beef)RAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.2b, 3.2b, 4.2b and 5.2b - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.63E-02 3.77E-02

Chemical


Steer)


OralBioavailability

Factor




Summary of Estimated Health RisksRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.2b, 3.2b, 4.2b and 5.2b - Southern Area Scenario



SEDIMENT EXPOSURE PATHWAYSIncidental ingestion of sediment 5.1E-05 6.0E-05 5.1E-05 6.0E-05 5.1E-05 6.0E-05 5.1E-05 6.0E-05Dermal contact with sediment 3.0E-06 4.8E-07 3.0E-06 4.8E-07 3.0E-06 4.8E-07 3.0E-06 4.8E-07

GROUNDWATER EXPOSURE PATHWAYSIngestion of Potable Groundwater - - - - - - - -Inhalation of Groundwater-Derived Vapours in Indoor Air - - - - - - - -Inhalation of Groundwater-Derived Vapours in Outdoor Air - - - - - - - -Inhalation of Groundwater Vapours (Where GW Enters Trench) - - - - - - - -Inhalation of Groundwater Derived Vapours from Shower/ Irrigation - - - - - - - -Vapours from Flowing Water - - - - - - - -Incidental Ingestion of Groundwater (Bathing or Excavation) - - - - - - - -Dermal Contact with Groundwater (Bathing or Excavation) - - - - - - - -Incidental ingestion of groundwater during showering/bathing 1.8E-01 1.7E+00 - - 1.8E-01 1.7E+00 - -Incidental ingestion of groundwater during food preparation and cleanup 1.1E-01 - - - 1.1E-01 - - -Incidental ingestion of groundwater during domestic laundry 1.1E-02 - - - 1.1E-02 - - -Incidental ingestion of groundwater during household cleaning 7.0E-03 3.3E-02 - - 7.0E-03 3.3E-02 - -Incidental ingestion of groundwater during sprinkler play 4.0E-02 6.6E-01 4.0E-02 6.6E-01 - - 4.0E-02 6.6E-01Incidental ingestion of groundwater during washing of animals 1.4E-02 1.1E-02 1.4E-02 1.1E-02 - - 1.4E-02 1.1E-02Incidental ingestion of groundwater during washing of vehicles 7.0E-03 - 7.0E-03 - - - 7.0E-03 -Incidental ingestion of groundwater during irrigation 5.6E-02 2.9E-02 5.6E-02 2.9E-02 - - 5.6E-02 2.9E-02Incidental ingestion of groundwater used in home swimming pools 1.6E-01 1.3E+00 1.6E-01 1.3E+00 - - 1.6E-01 1.3E+00Dermal contact with groundwater during showering/bathing 1.4E-04 2.0E-04 - - 1.4E-04 2.0E-04 - -Dermal contact with groundwater during food preparation and cleanup 8.5E-05 - - - 8.5E-05 - - -Dermal contact with groundwater during domestic laundry 9.1E-06 - - - 9.1E-06 - - -Dermal contact with groundwater residues after washing clothes 3.4E-03 9.2E-03 - - 3.4E-03 9.2E-03 - -Dermal contact with groundwater during household cleaning 5.6E-06 7.3E-06 - - 5.6E-06 7.3E-06 - -Incidental ingestion of groundwater residues after washing floors - 2.1E-01 - - - 2.1E-01 - -Dermal contact with groundwater residues after washing floors - 4.5E-03 - - - 4.5E-03 - -Dermal contact with groundwater during sprinkler play 6.3E-05 1.6E-04 6.3E-05 1.6E-04 - - 6.3E-05 1.6E-04Dermal contact with groundwater during washing of animals 3.3E-05 6.8E-06 3.3E-05 6.8E-06 - - 3.3E-05 6.8E-06Dermal contact with groundwater during washing of vehicles 1.6E-05 - 1.6E-05 - - - 1.6E-05 -Dermal contact with groundwater during irrigation 1.3E-04 1.8E-05 1.3E-04 1.8E-05 - - 1.3E-04 1.8E-05Dermal contact with groundwater residues after washing companion animals 1.2E-02 4.1E-02 1.2E-02 4.1E-02 - - 1.2E-02 4.1E-02Incidental ingestion of groundwater residues after washing companion animals 3.1E-01 8.1E-02 3.1E-01 8.1E-02 - - 3.1E-01 8.1E-02Dermal contact with groundwater used in home swimming pools 1.3E-04 1.6E-04 1.3E-04 1.6E-04 - - 1.3E-04 1.6E-04

SURFACE WATER EXPOSURE PATHWAYSIncidental ingestion of surface water during fishing 4.9E-04 1.4E-04 4.9E-04 1.4E-04 4.9E-04 1.4E-04 4.9E-04 1.4E-04Incidental ingestion of surface water during boating - - - - - - - -Incidental ingestion of surface water during swimming in creeks/rivers - - - - - - - -Dermal contact with surface water during fishing 9.4E-07 7.4E-08 9.4E-07 7.4E-08 9.4E-07 7.4E-08 9.4E-07 7.4E-08Dermal contact with surface water during boating - - - - - - - -Dermal contact with surface water during swimming in creeks/rivers - - - - - - - -


TOTAL 9.37E-01 4.14E+00 6.31E-01 2.22E+00 3.18E-01 1.94E+00 6.14E-01 2.18E+00





Scenario 2.2b - Southern Area Scenario 3.2b - Southern Area





Sediment(mg/kg)

SurfaceWater (mg/L)

Cattle Meat(mg/kg)

Finfish(mg/kg)


(mg/kg)

Site: RAAF Base Williamtown Perfluorooctane Sulfonate (PFOS) 0.15 0.1052 0.004734 modelled 0.00225 0.0022Address: RAAF Base Williamtown, NSW Perfluorooctanoic Acid (PFOA) 0.005 0.0006016 modelled 0.0003Client: Department of Defence Perfluorohexane Sulphonate (PFHxS) 0.015 0.04 0.006105 modelledScenario: Scenario 6.1a - Southern Area Perfluorohexanoic Acid (PFHxA) 0.004 0.005 0.002065 modelled

























































x Ingestion of beef

Ingestion of lamb

Ingestion of rabbit





Soil (mg/kg)







Calculation of Concentrations in Cattle Meat (Steer) Based on Environmental ConcentrationsRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 6.1a - Southern Area Scenario







SoilConcentration

(Cs)


(Cp)



(CDIlivestock)


Beef SteerVolume of

Distribution(Vd)




Serum Ratio(TSR)





Chemical




Health Risk Calculations - Incidental Soil IngestionRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 6.1a - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 7.58E-03 5.90E-02



Factor




Health Risk Calculations - Dermal Contact with SoilRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 6.1a - Southern Area Scenario


Adult IntakeFactor

(threshold)


Hazard Index(Adult)

Child IntakeFactor

(threshold)


Hazard Index(Child)



TOTAL 6.77E-04 9.43E-04



DermalAbsorption

Factor (DAF)




Health Risk Calculations - Inhalation of Soil-Derived Dust (Particulates) in Indoor AirRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 6.1a - Southern Area Scenario





Hazard Index(Adult)




Hazard Index(Child)



TOTAL 1.42E-05 1.42E-05




Surface Soil)




Health Risk Calculations - Inhalation of Soil-Derived Dust (Particulates) in Outdoor AirRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 6.1a - Southern Area Scenario



(threshold)



Hazard Index(Adult)




Hazard Index(Child)



TOTAL 5.10E-09 5.10E-09








Health Risk Calculations - Ingestion of FinfishRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 6.1a - Southern Area Scenario


Adult IntakeFactor

(threshold)


Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.70E-02 3.97E-02

ChemicalFish


Factor





Health Risk Calculations - Incidental Sediment IngestionRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 6.1a - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.87E-03 3.64E-03

ChemicalSediment







Health Risk Calculations - Dermal Contact with SedimentRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 6.1a - Southern Area Scenario


Adult IntakeFactor

(threshold)


Hazard Index(Adult)

Child IntakeFactor

(threshold)


Hazard Index(Child)



TOTAL 1.02E-04 2.94E-05

ChemicalSediment

Concentration

DermalAbsorption

Factor (DAF)





Health Risk Calculations - Incidental ingestion of surface water water during swimming in creeks and other surface water bodiesRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 6.1a - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 6.20E-01 1.61E+00






Health Risk Calculations - Dermal contact with surface water during swimming in creeks and other surface water bodiesRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 6.1a - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 9.93E-05 6.53E-05







Health Risk Calculations - Ingestion of Crustaceans and OsytersRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 6.1a - Southern Area Scenario


Adult IntakeFactor

(threshold)


Hazard Index(Adult)



Hazard Index(Child)



TOTAL 8.45E-03 4.57E-03

Chemical


Concentration






Health Risk Calculations - Ingestion of Cattle Muscle Tissue (Beef)RAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 6.1a - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.38E-01 3.26E-01

Chemical


Steer)


OralBioavailability

Factor




Health Risk Calculations - Incidental ingestion of surface water during irrigationRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 6.1a - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 4.43E-02 2.30E-02






Health Risk Calculations - Dermal contact with surface water during irrigationRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 6.1a - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 6.20E-05 8.64E-06







Summary of Estimated Health RisksRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 6.1a - Southern Area Scenario




SURFACE WATER EXPOSURE PATHWAYSIncidental ingestion of surface water during fishing - -Incidental ingestion of surface water during boating - -Incidental ingestion of surface water during swimming in creeks/rivers 6.2E-01 1.6E+00Incidental ingestion of surface water during irrigation 4.4E-02 2.3E-02Dermal contact with surface water during fishing - -Dermal contact with surface water during boating - -Dermal contact with surface water during swimming in creeks/rivers 9.9E-05 6.5E-05Dermal contact with surface water during irrigation 6.2E-05 8.6E-06


TOTAL 8.39E-01 2.06E+00


Scenario 6.1a





Sediment(mg/kg)

SurfaceWater (mg/L)

Cattle Meat(mg/kg)

Finfish(mg/kg)


(mg/kg)

Site: RAAF Base Williamtown Perfluorooctane Sulfonate (PFOS) 0.15 0.1052 0.004734 modelled 0.00225 0.0022Address: RAAF Base Williamtown, NSW Perfluorooctanoic Acid (PFOA) 0.005 0.0006016 modelled 0.0003Client: Department of Defence Perfluorohexane Sulphonate (PFHxS) 0.015 0.04 0.006105 modelledScenario: Scenario 6.2a - Southern Area Perfluorohexanoic Acid (PFHxA) 0.004 0.005 0.00207 modelled

























































x Ingestion of beef

Ingestion of lamb

Ingestion of rabbit





Soil (mg/kg)







Calculation of Concentrations in Cattle Meat (Steer) Based on Environmental ConcentrationsRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 6.2a - Southern Area Scenario







SoilConcentration

(Cs)


(Cp)



(CDIlivestock)


Beef SteerVolume of

Distribution(Vd)




Serum Ratio(TSR)





Chemical




Health Risk Calculations - Incidental Soil IngestionRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 6.2a - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 7.58E-03 5.90E-02



Factor




Health Risk Calculations - Dermal Contact with SoilRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 6.2a - Southern Area Scenario


Adult IntakeFactor

(threshold)


Hazard Index(Adult)

Child IntakeFactor

(threshold)


Hazard Index(Child)



TOTAL 6.77E-04 9.43E-04



DermalAbsorption

Factor (DAF)




Health Risk Calculations - Inhalation of Soil-Derived Dust (Particulates) in Indoor AirRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 6.2a - Southern Area Scenario





Hazard Index(Adult)




Hazard Index(Child)



TOTAL 1.42E-05 1.42E-05




Surface Soil)




Health Risk Calculations - Inhalation of Soil-Derived Dust (Particulates) in Outdoor AirRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 6.2a - Southern Area Scenario



(threshold)



Hazard Index(Adult)




Hazard Index(Child)



TOTAL 5.10E-09 5.10E-09








Health Risk Calculations - Ingestion of FinfishRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 6.2a - Southern Area Scenario


Adult IntakeFactor

(threshold)


Hazard Index(Adult)



Hazard Index(Child)



TOTAL 3.96E-02 9.26E-02

ChemicalFish


Factor





Health Risk Calculations - Incidental Sediment IngestionRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 6.2a - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.87E-03 3.64E-03

ChemicalSediment







Health Risk Calculations - Dermal Contact with SedimentRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 6.2a - Southern Area Scenario


Adult IntakeFactor

(threshold)


Hazard Index(Adult)

Child IntakeFactor

(threshold)


Hazard Index(Child)



TOTAL 1.02E-04 2.94E-05

ChemicalSediment

Concentration

DermalAbsorption

Factor (DAF)





Health Risk Calculations - Incidental ingestion of surface water water during swimming in creeks and other surface water bodiesRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 6.2a - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 6.20E-01 1.61E+00






Health Risk Calculations - Dermal contact with surface water during swimming in creeks and other surface water bodiesRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 6.2a - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 9.93E-05 6.53E-05







Health Risk Calculations - Ingestion of Crustaceans and OsytersRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 6.2a - Southern Area Scenario


Adult IntakeFactor

(threshold)


Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.97E-02 1.07E-02

Chemical


Concentration






Health Risk Calculations - Ingestion of Cattle Muscle Tissue (Beef)RAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 6.2a - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.38E-01 3.26E-01

Chemical


Steer)


OralBioavailability

Factor




Health Risk Calculations - Incidental ingestion of surface water during irrigationRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 6.2a - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 4.43E-02 2.30E-02






Health Risk Calculations - Dermal contact with surface water during irrigationRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 6.2a - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 6.20E-05 8.64E-06







Summary of Estimated Health RisksRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 6.2a - Southern Area Scenario



SEDIMENT EXPOSURE PATHWAYSIncidental ingestion of sediment in creeks/rivers and other surface water bodies 1.9E-03 3.6E-03Dermal contact with sediment in creeks/rivers and other surface water bodies 1.0E-04 2.9E-05Incidental ingestion of sediment during recreational fishing (Scenario 2.2a) 1.7E-04 3.3E-04Dermal contact with sediment during recreational fishing (Scenario 2.2a) 9.3E-06 2.7E-06

SURFACE WATER EXPOSURE PATHWAYSIncidental ingestion of surface water during fishing (Scenario 2.2a) 5.9E-02 1.7E-02Incidental ingestion of surface water during boating - -Incidental ingestion of surface water during swimming in creeks/rivers 6.2E-01 1.6E+00Incidental ingestion of surface water during irrigation 4.4E-02 2.3E-02Dermal contact with surface water during fishing (Scenario 2.2a) 3.8E-05 3.0E-06Dermal contact with surface water during boating - -Dermal contact with surface water during swimming in creeks/rivers 9.9E-05 6.5E-05Dermal contact with surface water during irrigation 6.2E-05 8.6E-06


TOTAL 9.32E-01 2.14E+00





Scenario 7a - Southern Area


Sediment(mg/kg)

SurfaceWater (mg/L)

Groundwater(mg/L)

Cattle Meat(mg/kg)

Site: RAAF Base Williamtown Perfluorooctane Sulfonate (PFOS) 0.15 0.1052 0.004734 0.0982 modelledAddress: RAAF Base Williamtown, NSW Perfluorooctanoic Acid (PFOA) 0.005 0.0006016 0.00294 modelledClient: Department of Defence Perfluorohexane Sulphonate (PFHxS) 0.015 0.04 0.006105 0.0186 modelledScenario: Scenario 7a Perfluorohexanoic Acid (PFHxA) 0.004 0.005 0.002065 0.00805 modelled

















x Dermal contact with sedimentSurface Water Pathways



x Dermal contact with surface water during swimming in creeks/riversDietary Pathways

Ingestion of home grown eggsIngestion of finfish




Soil (mg/kg)









Floor Area m2


Water (C)


Surfaceloading on

floor

mg/L L/cm2 mg/cm2


Chemical

10.0

1.25











SoilConcentration

(Cs)


(Cp)



(CDIlivestock)


Beef SteerVolume of

Distribution(Vd)




Serum Ratio(TSR)





Chemical








Hazard Index(Adult)



Hazard Index(Child)



TOTAL 7.58E-03 5.90E-02



Factor






Adult IntakeFactor

(threshold)


Hazard Index(Adult)

Child IntakeFactor

(threshold)


Hazard Index(Child)



TOTAL 6.77E-04 9.43E-04



DermalAbsorption

Factor (DAF)









Hazard Index(Adult)




Hazard Index(Child)



TOTAL 1.42E-05 1.42E-05




Surface Soil)







(threshold)



Hazard Index(Adult)




Hazard Index(Child)



TOTAL 5.10E-09 5.10E-09












Hazard Index(Adult)



Hazard Index(Child)



TOTAL 2.78E+00 1.56E+01










Hazard Index(Adult)



Hazard Index(Child)



TOTAL 4.45E-04 6.33E-04











Hazard Index(Adult)



Hazard Index(Child)



TOTAL 3.56E-01










Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.71E-04











Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.33E-01










Hazard Index(Adult)



Hazard Index(Child)



TOTAL 6.41E-05








Oral RfD(Background

Corrected)



Hazard Index(Adult)



Hazard Index(Child)



TOTAL 3.38E-03 2.30E-02



Water











Hazard Index(Adult)



Hazard Index(Child)



TOTAL 4.65E-02 2.17E-01










Hazard Index(Adult)



Hazard Index(Child)



TOTAL 2.23E-05 2.91E-05











Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.34E+00

Chemical









Adult IntakeFactor

(threshold)


Hazard Index(Adult)



Hazard Index(Child)



TOTAL 2.26E-02

Chemical


in Water



factor








Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.19E+00 6.18E+00










Hazard Index(Adult)



Hazard Index(Child)



TOTAL 3.80E-04 5.02E-04











Hazard Index(Adult)



Hazard Index(Child)



TOTAL 4.18E-01 1.08E-01








Adult IntakeFactor

(threshold)


Hazard Index(Adult)

Child IntakeFactor

(threshold)


Hazard Index(Child)



TOTAL 5.86E-04 4.08E-05












Oral RfD(Background

Corrected)



Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.05E+00 3.86E-01

Chemical


Water



Factor






Adult IntakeFactor

(threshold)


Hazard Index(Adult)

Child IntakeFactor

(threshold)


Hazard Index(Child)



TOTAL 4.05E-02 2.34E-01

Chemical


Water

DermalAbsorption

factor










Hazard Index(Adult)



Hazard Index(Child)



TOTAL 6.97E-02






Health Risk Calculations - Dermal contact with groundwater during washing of vehiclesRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 7a Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 9.76E-05











Hazard Index(Adult)



Hazard Index(Child)



TOTAL 4.89E-01 2.54E-01










Hazard Index(Adult)



Hazard Index(Child)



TOTAL 6.85E-04 9.55E-05











Hazard Index(Adult)



Hazard Index(Child)



TOTAL 6.86E+00 1.54E+01










Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.10E-03 6.28E-04











Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.87E-03 3.64E-03

ChemicalSediment









Adult IntakeFactor

(threshold)


Hazard Index(Adult)

Child IntakeFactor

(threshold)


Hazard Index(Child)



TOTAL 1.02E-04 2.94E-05

ChemicalSediment

Concentration

DermalAbsorption

Factor (DAF)









Hazard Index(Adult)



Hazard Index(Child)



TOTAL 6.20E-01 1.61E+00










Hazard Index(Adult)



Hazard Index(Child)



TOTAL 9.93E-05 6.53E-05







Health Risk Calculations - Ingestion of EggsRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 7a Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL










Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.38E-01 3.26E-01

Chemical


Steer)


OralBioavailability

Factor








GROUNDWATER EXPOSURE PATHWAYSIngestion of Potable Groundwater - -Inhalation of Groundwater-Derived Vapours in Indoor Air - -Inhalation of Groundwater-Derived Vapours in Outdoor Air - -Inhalation of Groundwater Vapours (Where GW Enters Trench) - -Inhalation of Groundwater Derived Vapours from Shower/ Irrigation - -Vapours from Flowing Water - -Incidental Ingestion of Groundwater (Bathing or Excavation) - -Dermal Contact with Groundwater (Bathing or Excavation) - -Incidental ingestion of groundwater during showering/bathing 2.8E+00 1.6E+01Incidental ingestion of groundwater during food preparation and cleanup 3.6E-01 -Incidental ingestion of groundwater during domestic laundry 1.3E-01 -Incidental ingestion of groundwater during household cleaning 4.6E-02 2.2E-01Incidental ingestion of groundwater during sprinkler play 1.2E+00 6.2E+00Incidental ingestion of groundwater during washing of animals 4.2E-01 1.1E-01Incidental ingestion of groundwater during washing of vehicles 7.0E-02 -Incidental ingestion of groundwater during irrigation 4.9E-01 2.5E-01Incidental ingestion of groundwater used in home swimming pools 6.9E+00 1.5E+01Dermal contact with groundwater during showering/bathing 4.4E-04 6.3E-04Dermal contact with groundwater during food preparation and cleanup 1.7E-04 -Dermal contact with groundwater during domestic laundry 6.4E-05 -Dermal contact with groundwater residues after washing clothes 3.4E-03 2.3E-02Dermal contact with groundwater during household cleaning 2.2E-05 2.9E-05Incidental ingestion of groundwater residues after washing floors - 1.3E+00Dermal contact with groundwater residues after washing floors - 2.3E-02Dermal contact with groundwater during sprinkler play 3.8E-04 5.0E-04Dermal contact with groundwater during washing of animals 5.9E-04 4.1E-05Dermal contact with groundwater during washing of vehicles 9.8E-05 -Dermal contact with groundwater during irrigation 6.9E-04 9.5E-05Dermal contact with groundwater residues after washing companion animals 4.0E-02 2.3E-01Incidental ingestion of groundwater residues after washing companion animals 1.1E+00 3.9E-01Dermal contact with groundwater used in home swimming pools 1.1E-03 6.3E-04

SURFACE WATER EXPOSURE PATHWAYSIncidental ingestion of surface water during fishing - -Incidental ingestion of surface water during boating - -Incidental ingestion of surface water during swimming in creeks/rivers 6.2E-01 1.6E+00Dermal contact with surface water during fishing - -Dermal contact with surface water during boating - -Dermal contact with surface water during swimming in creeks/rivers 9.9E-05 6.5E-05


TOTAL 1.42E+01 4.18E+01


Scenario 7a



Scenario 7b - Southern Area


Sediment(mg/kg)

SurfaceWater (mg/L)

Groundwater(mg/L)

Cattle Meat(mg/kg)

Site: RAAF Base Williamtown Perfluorooctane Sulfonate (PFOS) 0.0901 0.0501 0.001724 0.0982 modelledAddress: RAAF Base Williamtown, NSW Perfluorooctanoic Acid (PFOA) 0.0035 0.000123 0.00294 modelledClient: Department of Defence Perfluorohexane Sulphonate (PFHxS) 0.012 0.0139 0.003045 0.0186 modelledScenario: Scenario 7b Perfluorohexanoic Acid (PFHxA) 0.0008 0.00231 0.00099 0.00805 modelled

















x Dermal contact with sedimentSurface Water Pathways



x Dermal contact with surface water during swimming in creeks/riversDietary Pathways

Ingestion of home grown eggsIngestion of finfish




Soil (mg/kg)









Floor Area m2


Water (C)


Surfaceloading on

floor

mg/L L/cm2 mg/cm2


Chemical

10.0

1.25











SoilConcentration

(Cs)


(Cp)



(CDIlivestock)


Beef SteerVolume of

Distribution(Vd)




Serum Ratio(TSR)





Chemical








Hazard Index(Adult)



Hazard Index(Child)



TOTAL 5.31E-03 2.48E-02



Factor






Adult IntakeFactor

(threshold)


Hazard Index(Adult)

Child IntakeFactor

(threshold)


Hazard Index(Child)



TOTAL 1.67E-04 2.33E-04



DermalAbsorption

Factor (DAF)









Hazard Index(Adult)




Hazard Index(Child)



TOTAL 1.20E-05 9.74E-06




Surface Soil)







(threshold)



Hazard Index(Adult)




Hazard Index(Child)



TOTAL 3.22E-09 2.14E-09












Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.78E-01 1.66E+00










Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.42E-04 2.03E-04











Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.07E-01










Hazard Index(Adult)



Hazard Index(Child)



TOTAL 8.54E-05











Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.14E-02










Hazard Index(Adult)



Hazard Index(Child)



TOTAL 9.13E-06








Oral RfD(Background

Corrected)



Hazard Index(Adult)



Hazard Index(Child)



TOTAL 3.38E-03 9.20E-03



Water











Hazard Index(Adult)



Hazard Index(Child)



TOTAL 6.97E-03 3.25E-02










Hazard Index(Adult)



Hazard Index(Child)



TOTAL 5.58E-06 7.28E-06











Hazard Index(Adult)



Hazard Index(Child)



TOTAL 2.13E-01

Chemical









Adult IntakeFactor

(threshold)


Hazard Index(Adult)



Hazard Index(Child)



TOTAL 4.51E-03

Chemical


in Water



factor








Hazard Index(Adult)



Hazard Index(Child)



TOTAL 3.96E-02 6.60E-01










Hazard Index(Adult)



Hazard Index(Child)



TOTAL 6.34E-05 1.61E-04











Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.39E-02 1.08E-02








Adult IntakeFactor

(threshold)


Hazard Index(Adult)

Child IntakeFactor

(threshold)


Hazard Index(Child)



TOTAL 3.25E-05 6.80E-06












Oral RfD(Background

Corrected)



Hazard Index(Adult)



Hazard Index(Child)



TOTAL 3.12E-01 8.07E-02

Chemical


Water



Factor






Adult IntakeFactor

(threshold)


Hazard Index(Adult)

Child IntakeFactor

(threshold)


Hazard Index(Child)



TOTAL 1.25E-02 4.07E-02

Chemical


Water

DermalAbsorption

factor










Hazard Index(Adult)



Hazard Index(Child)



TOTAL 6.97E-03






Health Risk Calculations - Dermal contact with groundwater during washing of vehiclesRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 7b Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.63E-05











Hazard Index(Adult)



Hazard Index(Child)



TOTAL 5.58E-02 2.89E-02










Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.30E-04 1.81E-05











Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.58E-01 1.32E+00










Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.27E-04 1.61E-04











Hazard Index(Adult)



Hazard Index(Child)



TOTAL 3.45E-04 4.02E-04

ChemicalSediment









Adult IntakeFactor

(threshold)


Hazard Index(Adult)

Child IntakeFactor

(threshold)


Hazard Index(Child)



TOTAL 1.99E-05 3.19E-06

ChemicalSediment

Concentration

DermalAbsorption

Factor (DAF)









Hazard Index(Adult)



Hazard Index(Child)



TOTAL 6.25E-03 7.35E-03










Hazard Index(Adult)



Hazard Index(Child)



TOTAL 5.00E-06 8.97E-07







Health Risk Calculations - Ingestion of EggsRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 7b Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL










Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.63E-02 3.77E-02

Chemical


Steer)


OralBioavailability

Factor








GROUNDWATER EXPOSURE PATHWAYSIngestion of Potable Groundwater - -Inhalation of Groundwater-Derived Vapours in Indoor Air - -Inhalation of Groundwater-Derived Vapours in Outdoor Air - -Inhalation of Groundwater Vapours (Where GW Enters Trench) - -Inhalation of Groundwater Derived Vapours from Shower/ Irrigation - -Vapours from Flowing Water - -Incidental Ingestion of Groundwater (Bathing or Excavation) - -Dermal Contact with Groundwater (Bathing or Excavation) - -Incidental ingestion of groundwater during showering/bathing 1.8E-01 1.7E+00Incidental ingestion of groundwater during food preparation and cleanup 1.1E-01 -Incidental ingestion of groundwater during domestic laundry 1.1E-02 -Incidental ingestion of groundwater during household cleaning 7.0E-03 3.3E-02Incidental ingestion of groundwater during sprinkler play 4.0E-02 6.6E-01Incidental ingestion of groundwater during washing of animals 1.4E-02 1.1E-02Incidental ingestion of groundwater during washing of vehicles 7.0E-03 -Incidental ingestion of groundwater during irrigation 5.6E-02 2.9E-02Incidental ingestion of groundwater used in home swimming pools 1.6E-01 1.3E+00Dermal contact with groundwater during showering/bathing 1.4E-04 2.0E-04Dermal contact with groundwater during food preparation and cleanup 8.5E-05 -Dermal contact with groundwater during domestic laundry 9.1E-06 -Dermal contact with groundwater residues after washing clothes 3.4E-03 9.2E-03Dermal contact with groundwater during household cleaning 5.6E-06 7.3E-06Incidental ingestion of groundwater residues after washing floors - 2.1E-01Dermal contact with groundwater residues after washing floors - 4.5E-03Dermal contact with groundwater during sprinkler play 6.3E-05 1.6E-04Dermal contact with groundwater during washing of animals 3.3E-05 6.8E-06Dermal contact with groundwater during washing of vehicles 1.6E-05 -Dermal contact with groundwater during irrigation 1.3E-04 1.8E-05Dermal contact with groundwater residues after washing companion animals 1.2E-02 4.1E-02Incidental ingestion of groundwater residues after washing companion animals 3.1E-01 8.1E-02Dermal contact with groundwater used in home swimming pools 1.3E-04 1.6E-04

SURFACE WATER EXPOSURE PATHWAYSIncidental ingestion of surface water during fishing - -Incidental ingestion of surface water during boating - -Incidental ingestion of surface water during swimming in creeks/rivers 6.3E-03 7.4E-03Dermal contact with surface water during fishing - -Dermal contact with surface water during boating - -Dermal contact with surface water during swimming in creeks/rivers 5.0E-06 9.0E-07


TOTAL 9.34E-01 4.13E+00


Scenario 7b





Sediment(mg/kg)

SurfaceWater (mg/L)

Finfish(mg/kg)


(mg/kg)

Site: RAAF Base Williamtown Perfluorooctane Sulfonate (PFOS) 0.013 0.00373 0.00225 0.0022Address: RAAF Base Williamtown, NSW Perfluorooctanoic Acid (PFOA) 0.00008 0.0003Client: Department of Defence Perfluorohexane Sulphonate (PFHxS) 0.00347Scenario: Scenario 8a - Southern Area Perfluorohexanoic Acid (PFHxA) 0.0007























































Ingestion of beef

Ingestion of lamb

Ingestion of rabbit





Receptor:Commercial fishing workerExposure Assumptions:Reasonable Maximum Exposure





Health Risk Calculations - Ingestion of FinfishRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 8a - Southern Area Scenario


Adult IntakeFactor

(threshold)


Hazard Index(Adult)



Hazard Index(Child)


Perfluorooctane Sulfonate (PFOS) 0.00225 1.00E+00 1.86E-05 3.64E-03 8.20E-06 4.41E-01 1.47E-02 3.30E-05 1.77E+00Perfluorooctanoic Acid (PFOA) - - - - - - - - -Perfluorohexane Sulphonate (PFHxS) - - - - - - - - -Perfluorohexanoic Acid (PFHxA) - - - - - - - - -

TOTAL 4.41E-01 1.77E+00

ChemicalFish


Factor





Health Risk Calculations - Incidental Sediment IngestionRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 8a - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 5.99E-04

ChemicalSediment







Health Risk Calculations - Dermal Contact with SedimentRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 8a - Southern Area Scenario


Adult IntakeFactor

(threshold)


Hazard Index(Adult)

Child IntakeFactor

(threshold)


Hazard Index(Child)



TOTAL 3.05E-05

ChemicalSediment

Concentration

DermalAbsorption

Factor (DAF)





Health Risk Calculations - Dermal contact with surface water during fishingRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 8a - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



- - - - - - - - -

TOTAL 2.61E-04







Health Risk Calculations - Incidental ingestion of surface water water during fishingRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 8a - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 4.62E-01






Health Risk Calculations - Ingestion of Crustaceans and OsytersRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 8a - Southern Area Scenario


Adult IntakeFactor

(threshold)


Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.16E-01 1.31E-01

Chemical


Concentration






Summary of Estimated Health RisksRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 8a - Southern Area Scenario


SOIL EXPOSURE PATHWAYS (Scenario 2.2a)Incidental Ingestion of Soil 7.6E-03 5.9E-02Dermal Contact with Soil 6.8E-04 9.4E-04Inhalation of Surface Soil-Derived Dust in Indoor Air 1.4E-05 1.4E-05Inhalation of Surface Soil-Derived Dust in Outdoor Air 5.1E-09 5.1E-09Inhalation of Surface Soil-Derived Vapours in Outdoor Air - -Inhalation of Surface Soil-Derived Vapours from Excavation - -Inhalation of Subsurface Soil-Derived Vapours in Indoor Air - -Inhalation of Subsurface Soil-Derived Vapours in Outdoor Air - -

SEDIMENT EXPOSURE PATHWAYSIncidental ingestion of sediment during fishing 6.0E-04 -Dermal contact with sediment during fishing 3.0E-05 -

GROUNDWATER EXPOSURE PATHWAYS (Scenario 2.2a)Ingestion of Potable Groundwater - -Inhalation of Groundwater-Derived Vapours in Indoor Air - -Inhalation of Groundwater-Derived Vapours in Outdoor Air - -Inhalation of Groundwater Vapours (Where GW Enters Trench) - -Inhalation of Groundwater Derived Vapours from Shower/ Irrigation - -Vapours from Flowing Water - -Incidental Ingestion of Groundwater (Bathing or Excavation) - -Dermal Contact with Groundwater (Bathing or Excavation) - -Incidental ingestion of groundwater during showering/bathing 2.8E+00 1.6E+01Incidental ingestion of groundwater during food preparation and cleanup 3.6E-01 -Incidental ingestion of groundwater during domestic laundry 1.3E-01 -Incidental ingestion of groundwater during household cleaning 4.6E-02 2.2E-01Incidental ingestion of groundwater during sprinkler play 1.2E+00 6.2E+00Incidental ingestion of groundwater during washing of animals 4.2E-01 1.1E-01Incidental ingestion of groundwater during washing of vehicles 7.0E-02 -Incidental ingestion of groundwater during irrigation 4.9E-01 2.5E-01Incidental ingestion of groundwater used in home swimming pools 6.9E+00 1.5E+01Dermal contact with groundwater during showering/bathing 4.4E-04 6.3E-04Dermal contact with groundwater during food preparation and cleanup 1.7E-04 -Dermal contact with groundwater during domestic laundry 6.4E-05 -Dermal contact with groundwater residues after washing clothes 3.4E-03 2.3E-02Dermal contact with groundwater during household cleaning 2.2E-05 2.9E-05Incidental ingestion of groundwater residues after washing floors - 1.3E+00Dermal contact with groundwater residues after washing floors - 2.3E-02Dermal contact with groundwater during sprinkler play 3.8E-04 5.0E-04Dermal contact with groundwater during washing of animals 5.9E-04 4.1E-05Dermal contact with groundwater during washing of vehicles 9.8E-05 -Dermal contact with groundwater during irrigation 6.9E-04 9.5E-05Dermal contact with groundwater residues after washing companion animals 4.0E-02 2.3E-01Incidental ingestion of groundwater residues after washing companion animals 1.1E+00 3.9E-01Dermal contact with groundwater used in home swimming pools 1.1E-03 6.3E-04

SURFACE WATER EXPOSURE PATHWAYSIncidental ingestion of surface water during fishing 4.6E-01 -Incidental ingestion of surface water during boating - -Incidental ingestion of surface water during swimming in creeks/rivers - -Dermal contact with surface water during fishing 2.6E-04 -Dermal contact with surface water during boating - -Dermal contact with surface water during swimming in creeks/rivers - -

DIETARY EXPOSURE PATHWAYSIngestion of finfish from the Site 4.4E-01 1.8E+00Ingestion of breast milk by infants - -Ingestion of home grown beef - -Ingestion of home grown livestock milk - -Ingestion of home grown eggs - -Ingestion of home grown fruit - -Ingestion of home grown green vegetables - -Ingestion of home grown lamb - -Ingestion of rabbit meat - -Ingestion of crustaceans and oysters 1.2E-01 1.3E-01

TOTAL 1.45E+01 4.17E+01

Exposure Pathway







Sediment(mg/kg)

SurfaceWater (mg/L)

Finfish(mg/kg)


(mg/kg)

Site: RAAF Base Williamtown Perfluorooctane Sulfonate (PFOS) 0.0094 0.001581 0.00225 0.0022Address: RAAF Base Williamtown, NSW Perfluorooctanoic Acid (PFOA) 0.000376 0.0003Client: Department of Defence Perfluorohexane Sulphonate (PFHxS) 0.002439Scenario: Scenario 8b - Southern Area Perfluorohexanoic Acid (PFHxA) 0.000342























































Ingestion of beef

Ingestion of lamb

Ingestion of rabbit





Receptor:Commercial fishing workerExposure Assumptions:Average Exposure





Health Risk Calculations - Ingestion of FinfishRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 8b - Southern Area Scenario


Adult IntakeFactor

(threshold)


Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.13E-01 2.65E-01

ChemicalFish


Factor





Health Risk Calculations - Incidental Sediment IngestionRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 8b - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 2.37E-04

ChemicalSediment







Health Risk Calculations - Dermal Contact with SedimentRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 8b - Southern Area Scenario


Adult IntakeFactor

(threshold)


Hazard Index(Adult)

Child IntakeFactor

(threshold)


Hazard Index(Child)



TOTAL 1.27E-05

ChemicalSediment

Concentration

DermalAbsorption

Factor (DAF)





Health Risk Calculations - Dermal contact with surface water during fishingRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 8b - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



- - - - - - - - -

TOTAL 9.59E-05







Health Risk Calculations - Incidental ingestion of surface water water during fishingRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 8b - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 5.66E-02






Health Risk Calculations - Ingestion of Crustaceans and OsytersRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 8b - Southern Area Scenario


Adult IntakeFactor

(threshold)


Hazard Index(Adult)



Hazard Index(Child)



TOTAL 5.63E-02 3.04E-02

Chemical


Concentration






Summary of Estimated Health RisksRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 8b - Southern Area Scenario


SOIL EXPOSURE PATHWAYS (Scenario 2.2b)Incidental Ingestion of Soil 3.9E-03 1.8E-02Dermal Contact with Soil 1.2E-04 1.7E-04Inhalation of Surface Soil-Derived Dust in Indoor Air 8.8E-06 7.2E-06Inhalation of Surface Soil-Derived Dust in Outdoor Air 2.4E-09 1.6E-09Inhalation of Surface Soil-Derived Vapours in Outdoor Air - -Inhalation of Surface Soil-Derived Vapours from Excavation - -Inhalation of Subsurface Soil-Derived Vapours in Indoor Air - -Inhalation of Subsurface Soil-Derived Vapours in Outdoor Air - -

SEDIMENT EXPOSURE PATHWAYSIncidental ingestion of sediment during fishing 2.4E-04 -Dermal contact with sediment during fishing 1.3E-05 -

GROUNDWATER EXPOSURE PATHWAYS (Scenario 2.2b)Ingestion of Potable Groundwater - -Inhalation of Groundwater-Derived Vapours in Indoor Air - -Inhalation of Groundwater-Derived Vapours in Outdoor Air - -Inhalation of Groundwater Vapours (Where GW Enters Trench) - -Inhalation of Groundwater Derived Vapours from Shower/ Irrigation - -Vapours from Flowing Water - -Incidental Ingestion of Groundwater (Bathing or Excavation) - -Dermal Contact with Groundwater (Bathing or Excavation) - -Incidental ingestion of groundwater during showering/bathing 1.8E-01 1.7E+00Incidental ingestion of groundwater during food preparation and cleanup 1.1E-01 -Incidental ingestion of groundwater during domestic laundry 1.1E-02 -Incidental ingestion of groundwater during household cleaning 7.0E-03 3.3E-02Incidental ingestion of groundwater during sprinkler play 4.0E-02 6.6E-01Incidental ingestion of groundwater during washing of animals 1.4E-02 1.1E-02Incidental ingestion of groundwater during washing of vehicles 7.0E-03 -Incidental ingestion of groundwater during irrigation 5.6E-02 2.9E-02Incidental ingestion of groundwater used in home swimming pools 1.6E-01 1.3E+00Dermal contact with groundwater during showering/bathing 1.4E-04 2.0E-04Dermal contact with groundwater during food preparation and cleanup 8.5E-05 -Dermal contact with groundwater during domestic laundry 9.1E-06 -Dermal contact with groundwater residues after washing clothes 3.4E-03 9.2E-03Dermal contact with groundwater during household cleaning 5.6E-06 7.3E-06Incidental ingestion of groundwater residues after washing floors - 2.1E-01Dermal contact with groundwater residues after washing floors - 4.5E-03Dermal contact with groundwater during sprinkler play 6.3E-05 1.6E-04Dermal contact with groundwater during washing of animals 3.3E-05 6.8E-06Dermal contact with groundwater during washing of vehicles 1.6E-05 -Dermal contact with groundwater during irrigation 1.3E-04 1.8E-05Dermal contact with groundwater residues after washing companion animals 1.2E-02 4.1E-02Incidental ingestion of groundwater residues after washing companion animals 3.1E-01 8.1E-02Dermal contact with groundwater used in home swimming pools 1.3E-04 1.6E-04

SURFACE WATER EXPOSURE PATHWAYSIncidental ingestion of surface water during fishing 5.7E-02 -Incidental ingestion of surface water during boating - -Incidental ingestion of surface water during swimming in creeks/rivers - -Dermal contact with surface water during fishing 9.6E-05 -Dermal contact with surface water during boating - -Dermal contact with surface water during swimming in creeks/rivers - -

DIETARY EXPOSURE PATHWAYSIngestion of finfish from the Site 1.1E-01 2.6E-01Ingestion of breast milk by infants - -Ingestion of home grown beef - -Ingestion of home grown livestock milk - -Ingestion of home grown eggs - -Ingestion of home grown fruit - -Ingestion of home grown green vegetables - -Ingestion of home grown lamb - -Ingestion of rabbit meat - -Ingestion of crustaceans and oysters 5.6E-02 3.0E-02

TOTAL 1.14E+00 4.37E+00

Exposure Pathway

Scenario 8b






Sediment(mg/kg)

SurfaceWater (mg/L)

Site: RAAF Base Williamtown Perfluorooctane Sulfonate (PFOS) 0.15 0.1052 0.004734Address: RAAF Base Williamtown, NSW Perfluorooctanoic Acid (PFOA) 0.005 0.0006016Client: Department of Defence Perfluorohexane Sulphonate (PFHxS) 0.015 0.04 0.006105Scenario: Scenario 11a - Southern Area Perfluorohexanoic Acid (PFHxA) 0.004 0.005 0.00207

Council Worker























































Ingestion of beef

Ingestion of lamb

Ingestion of rabbit





Soil (mg/kg)


Receptor:






Health Risk Calculations - Incidental Soil IngestionRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 11a - Southern Area Scenario




Hazard Index(Adult)


Perfluorooctane Sulfonate (PFOS) 0.15 1.00E+00 1.86E-05 3.10E-06 4.65E-07 2.50E-02Perfluorooctanoic Acid (PFOA) 0.005 1.00E+00 1.59E-04 3.10E-06 1.55E-08 9.73E-05Perfluorohexane Sulphonate (PFHxS) 0.015 1.00E+00 2.00E-05 3.10E-06 4.65E-08 2.32E-03Perfluorohexanoic Acid (PFHxA) 0.004 1.00E+00 1.00E-01 3.10E-06 1.24E-08 1.24E-07

TOTAL 2.74E-02



Factor




Health Risk Calculations - Dermal Contact with SoilRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 11a - Southern Area Scenario


Adult IntakeFactor

(threshold)


Hazard Index(Adult)

Child IntakeFactor

(threshold)


Hazard Index(Child)



TOTAL 5.85E-04



DermalAbsorption

Factor (DAF)




Health Risk Calculations - Inhalation of Soil-Derived Dust (Particulates) in Outdoor AirRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 11a - Southern Area Scenario



(threshold)



Hazard Index(Adult)




Hazard Index(Child)


Perfluorooctane Sulfonate (PFOS) 0.15 3.85E-08 7.00E-05 3.16E-09 4.74E-10 6.77E-06 - - -Perfluorooctanoic Acid (PFOA) 0.005 3.85E-08 5.60E-04 3.16E-09 1.58E-11 2.82E-08 - - -Perfluorohexane Sulphonate (PFHxS) 0.015 3.85E-08 7.00E-05 3.16E-09 4.74E-11 6.77E-07 - - -Perfluorohexanoic Acid (PFHxA) 0.004 3.85E-08 3.50E-01 3.16E-09 1.26E-11 3.61E-11 - - -

TOTAL 7.48E-06








Health Risk Calculations - Incidental Sediment IngestionRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 11a - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 2.37E-02

ChemicalSediment







Health Risk Calculations - Dermal Contact with SedimentRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 11a - Southern Area Scenario


Adult IntakeFactor

(threshold)


Hazard Index(Adult)

Child IntakeFactor

(threshold)


Hazard Index(Child)



TOTAL 2.98E-04

ChemicalSediment

Concentration

DermalAbsorption

Factor (DAF)





Health Risk Calculations - Incidental ingestion of surface water water during swimming in creeks and other surface water bodiesRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 11a - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 2.12E-01






Health Risk Calculations - Dermal contact with surface water during swimming in creeks and other surface water bodiesRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 11a - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 3.51E-04












TOTAL 2.64E-01







SurfaceWater (mg/L)

Groundwater(mg/L)


Cattle Meat(mg/kg)

Site: RAAF Base Williamtown Perfluorooctane Sulfonate (PFOS) 0.15 0.004734 0.0982 modelled modelledAddress: RAAF Base Williamtown, NSW Perfluorooctanoic Acid (PFOA) 0.005 0.0006016 0.00294 modelled modelledClient: Department of Defence Perfluorohexane Sulphonate (PFHxS) 0.015 0.006105 0.0186 modelled modelledScenario: Scenario 12a - Southern Area Perfluorohexanoic Acid (PFHxA) 0.004 0.00207 0.00805 modelled modelled

























Soil (mg/kg)


Receptor:Agricultural workerExposure Assumptions:Reasonable Maximum Exposure





Calculation of Surface Loading on Floors Following CleaningRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 12a - Southern Area Scenario


Floor Area m2


Water (C)


Surfaceloading on

floor

mg/L L/cm2 mg/cm2


Chemical

10.0

1.25




Calculation of Concentrations in Cattle Meat (Steer) Based on Environmental ConcentrationsRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 12a - Southern Area Scenario







SoilConcentration

(Cs)


(Cp)



(CDIlivestock)


Beef SteerVolume of

Distribution(Vd)




Serum Ratio(TSR)





Chemical




Health Risk Calculations - Incidental Soil IngestionRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 12a - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 7.58E-03 5.90E-02



Factor




Health Risk Calculations - Dermal Contact with SoilRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 12a - Southern Area Scenario


Adult IntakeFactor

(threshold)


Hazard Index(Adult)

Child IntakeFactor

(threshold)


Hazard Index(Child)



TOTAL 6.77E-04 9.43E-04



DermalAbsorption

Factor (DAF)




Health Risk Calculations - Inhalation of Soil-Derived Dust (Particulates) in Indoor AirRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 12a - Southern Area Scenario





Hazard Index(Adult)




Hazard Index(Child)



TOTAL 1.42E-05 1.42E-05




Surface Soil)




Health Risk Calculations - Inhalation of Soil-Derived Dust (Particulates) in Outdoor AirRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 12a - Southern Area Scenario



(threshold)



Hazard Index(Adult)




Hazard Index(Child)



TOTAL 5.10E-09 5.10E-09








Health Risk Calculations - Incidental ingestion of groundwater during showering/bathingRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 12a - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 2.78E+00 1.56E+01






Health Risk Calculations - Dermal contact with groundwater during showering/bathingRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 12a - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 4.45E-04 6.33E-04







Health Risk Calculations - Incidental ingestion of groundwater during food preparation and cleanupRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 12a - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 3.56E-01






Health Risk Calculations - Dermal contact with groundwater during food preparation and cleanupRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 12a - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.71E-04







Health Risk Calculations - Incidental ingestion of groundwater during domestic laundryRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 12a - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.33E-01






Health Risk Calculations - Dermal contact with groundwater during domestic laundryRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 12a - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 6.41E-05







Health Risk Calculations - Dermal Contact with residues in clothes after washing with groundwaterRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 12a - Southern Area Scenario

Oral RfD(Background

Corrected)



Hazard Index(Adult)



Hazard Index(Child)



TOTAL 3.38E-03 2.30E-02



Water







Health Risk Calculations - Incidental ingestion of groundwater during household cleaningRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 12a - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 4.65E-02 2.17E-01






Health Risk Calculations - Dermal contact with groundwater during household cleaningRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 12a - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 2.23E-05 2.91E-05







Health Risk Calculations - Incidental Ingestion via Hand to Mouth Transfer of Residues on Floors After CleaningRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 12a - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.34E+00

Chemical







Health Risk Calculations - Dermal Contact with residues on floors after cleaningRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 12a - Southern Area Scenario


Adult IntakeFactor

(threshold)


Hazard Index(Adult)



Hazard Index(Child)



TOTAL 2.26E-02

Chemical


in Water



factor




Health Risk Calculations - Incidental ingestion of groundwater during sprinkler playRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 12a - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.19E+00 6.18E+00






Health Risk Calculations - Dermal contact with groundwater during sprinkler playRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 12a - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 3.80E-04 5.02E-04







Health Risk Calculations - Incidental ingestion of groundwater during washing of animalsRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 12a - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 4.18E-01 1.08E-01






Health Risk Calculations - Dermal contact with groundwater during washing of animalsRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 12a - Southern Area Scenario


Adult IntakeFactor

(threshold)


Hazard Index(Adult)

Child IntakeFactor

(threshold)


Hazard Index(Child)



TOTAL 5.86E-04 4.08E-05







Health Risk Calculations - Incidental Ingestion via Hand to Mouth Transfer of Residues on Animals after washing with groundwaterRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 12a - Southern Area Scenario





Oral RfD(Background

Corrected)



Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.05E+00 3.86E-01

Chemical


Water



Factor




Health Risk Calculations - Dermal Contact with residues on floors after cleaningRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 12a - Southern Area Scenario


Adult IntakeFactor

(threshold)


Hazard Index(Adult)

Child IntakeFactor

(threshold)


Hazard Index(Child)



TOTAL 4.05E-02 2.34E-01

Chemical


Water

DermalAbsorption

factor






Health Risk Calculations - Incidental ingestion of groundwater during irrigationRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 12a - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 4.89E-01 2.54E-01






Health Risk Calculations - Dermal contact with groundwater during irrigationRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 12a - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 6.85E-04 9.55E-05







Health Risk Calculations - Incidental ingestion of groundwater used in home swimming poolsRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 12a - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 6.86E+00 1.54E+01






Health Risk Calculations - Dermal contact with groundwater used in home swimming poolsRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 12a - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.10E-03 6.28E-04







Health Risk Calculations - Ingestion of Cattle Muscle Tissue (Beef)RAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 12a - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)


Perfluorooctane Sulfonate (PFOS) 0.031546119 1.00E+00 1.86E-05 1.77E-03 5.60E-05 3.01E+00 3.95E-03 1.25E-04 6.69E+00Perfluorooctanoic Acid (PFOA) 1.91256E-05 1.00E+00 1.59E-04 1.77E-03 3.39E-08 2.13E-04 3.95E-03 7.55E-08 4.74E-04Perfluorohexane Sulphonate (PFHxS) - - - - - - - - -Perfluorohexanoic Acid (PFHxA) - - - - - - - - -

TOTAL 3.01E+00 6.69E+00

Chemical


Steer)


OralBioavailability

Factor




Health Risk Calculations - Incidental ingestion of surface water during irrigationRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 12a - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 4.43E-02 2.30E-02






Health Risk Calculations - Dermal contact with surface water during irrigationRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 12a - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 6.20E-05 8.64E-06










GROUNDWATER EXPOSURE PATHWAYSIngestion of Potable Groundwater - -Inhalation of Groundwater-Derived Vapours in Indoor Air - -Inhalation of Groundwater-Derived Vapours in Outdoor Air - -Inhalation of Groundwater Vapours (Where GW Enters Trench) - -Inhalation of Groundwater Derived Vapours from Shower/ Irrigation - -Vapours from Flowing Water - -Incidental Ingestion of Groundwater (Bathing or Excavation) - -Dermal Contact with Groundwater (Bathing or Excavation) - -Incidental ingestion of groundwater during showering/bathing 2.8E+00 1.6E+01Incidental ingestion of groundwater during food preparation and cleanup 3.6E-01 -Incidental ingestion of groundwater during domestic laundry 1.3E-01 -Incidental ingestion of groundwater during household cleaning 4.6E-02 2.2E-01Incidental ingestion of groundwater during sprinkler play 1.2E+00 6.2E+00Incidental ingestion of groundwater during washing of animals 4.2E-01 1.1E-01Incidental ingestion of groundwater during washing of vehicles 7.0E-02 -Incidental ingestion of groundwater during irrigation 4.9E-01 2.5E-01Incidental ingestion of groundwater used in home swimming pools 6.9E+00 1.5E+01Dermal contact with groundwater during showering/bathing 4.4E-04 6.3E-04Dermal contact with groundwater during food preparation and cleanup 1.7E-04 -Dermal contact with groundwater during domestic laundry 6.4E-05 -Dermal contact with groundwater residues after washing clothes 3.4E-03 2.3E-02Dermal contact with groundwater during household cleaning 2.2E-05 2.9E-05Incidental ingestion of groundwater residues after washing floors - 1.3E+00Dermal contact with groundwater residues after washing floors - 2.3E-02Dermal contact with groundwater during sprinkler play 3.8E-04 5.0E-04Dermal contact with groundwater during washing of animals 5.9E-04 4.1E-05Dermal contact with groundwater during washing of vehicles 9.8E-05 -Dermal contact with groundwater during irrigation 6.9E-04 9.5E-05Dermal contact with groundwater residues after washing companion animals 4.0E-02 2.3E-01Incidental ingestion of groundwater residues after washing companion animals 1.1E+00 3.9E-01Dermal contact with groundwater used in home swimming pools 1.1E-03 6.3E-04


DIETARY EXPOSURE PATHWAYSIngestion of finfish from the Site - -Ingestion of breast milk by infants - -Ingestion of home grown beef 3.0E+00 6.7E+00Ingestion of home grown livestock milk - -Ingestion of home grown eggs - -Ingestion of home grown fruit - -Ingestion of home grown green vegetables - -Ingestion of home grown lamb - -Ingestion of rabbit meat - -Ingestion of crustaceans and oysters - -

TOTAL 1.65E+01 4.66E+01







SurfaceWater (mg/L)

Groundwater(mg/L)


Cattle Meat(mg/kg)

Site: RAAF Base Williamtown Perfluorooctane Sulfonate (PFOS) 0.0901 0.001724 0.0982 modelled modelledAddress: RAAF Base Williamtown, NSW Perfluorooctanoic Acid (PFOA) 0.0035 0.000123 0.00294 modelled modelledClient: Department of Defence Perfluorohexane Sulphonate (PFHxS) 0.012 0.003045 0.0186 modelled modelledScenario: Scenario 12b - Southern Area Perfluorohexanoic Acid (PFHxA) 0.0008 0.00099 0.00805 modelled modelled

























Soil (mg/kg)


Receptor:Agricultural workerExposure Assumptions:Average Exposure





Calculation of Surface Loading on Floors Following CleaningRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 12b - Southern Area Scenario


Floor Area m2


Water (C)


Surfaceloading on

floor

mg/L L/cm2 mg/cm2


Chemical

10.0

1.25




Calculation of Concentrations in Cattle Meat (Steer) Based on Environmental ConcentrationsRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 12b - Southern Area Scenario







SoilConcentration

(Cs)


(Cp)



(CDIlivestock)


Beef SteerVolume of

Distribution(Vd)




Serum Ratio(TSR)





Chemical




Health Risk Calculations - Incidental Soil IngestionRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 12b - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 3.90E-03 1.82E-02



Factor




Health Risk Calculations - Dermal Contact with SoilRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 12b - Southern Area Scenario


Adult IntakeFactor

(threshold)


Hazard Index(Adult)

Child IntakeFactor

(threshold)


Hazard Index(Child)



TOTAL 1.23E-04 1.71E-04



DermalAbsorption

Factor (DAF)




Health Risk Calculations - Inhalation of Soil-Derived Dust (Particulates) in Indoor AirRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 12b - Southern Area Scenario





Hazard Index(Adult)




Hazard Index(Child)



TOTAL 8.80E-06 7.17E-06




Surface Soil)




Health Risk Calculations - Inhalation of Soil-Derived Dust (Particulates) in Outdoor AirRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 12b - Southern Area Scenario



(threshold)



Hazard Index(Adult)




Hazard Index(Child)



TOTAL 2.37E-09 1.58E-09








Health Risk Calculations - Incidental ingestion of groundwater during showering/bathingRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 12b - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.78E-01 1.66E+00






Health Risk Calculations - Dermal contact with groundwater during showering/bathingRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 12b - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.42E-04 2.03E-04







Health Risk Calculations - Incidental ingestion of groundwater during food preparation and cleanupRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 12b - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.07E-01






Health Risk Calculations - Dermal contact with groundwater during food preparation and cleanupRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 12b - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 8.54E-05







Health Risk Calculations - Incidental ingestion of groundwater during domestic laundryRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 12b - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.14E-02






Health Risk Calculations - Dermal contact with groundwater during domestic laundryRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 12b - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 9.13E-06







Health Risk Calculations - Dermal Contact with residues in clothes after washing with groundwaterRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 12b - Southern Area Scenario

Oral RfD(Background

Corrected)



Hazard Index(Adult)



Hazard Index(Child)



TOTAL 3.38E-03 9.20E-03



Water







Health Risk Calculations - Incidental ingestion of groundwater during household cleaningRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 12b - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 6.97E-03 3.25E-02






Health Risk Calculations - Dermal contact with groundwater during household cleaningRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 12b - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 5.58E-06 7.28E-06







Health Risk Calculations - Incidental Ingestion via Hand to Mouth Transfer of Residues on Floors After CleaningRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 12b - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 2.13E-01

Chemical







Health Risk Calculations - Dermal Contact with residues on floors after cleaningRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 12b - Southern Area Scenario


Adult IntakeFactor

(threshold)


Hazard Index(Adult)



Hazard Index(Child)



TOTAL 4.51E-03

Chemical


in Water



factor




Health Risk Calculations - Incidental ingestion of groundwater during sprinkler playRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 12b - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 3.96E-02 6.60E-01






Health Risk Calculations - Dermal contact with groundwater during sprinkler playRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 12b - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 6.34E-05 1.61E-04







Health Risk Calculations - Incidental ingestion of groundwater during washing of animalsRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 12b - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.39E-02 1.08E-02






Health Risk Calculations - Dermal contact with groundwater during washing of animalsRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 12b - Southern Area Scenario


Adult IntakeFactor

(threshold)


Hazard Index(Adult)

Child IntakeFactor

(threshold)


Hazard Index(Child)



TOTAL 3.25E-05 6.80E-06







Health Risk Calculations - Incidental Ingestion via Hand to Mouth Transfer of Residues on Animals after washing with groundwaterRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 12b - Southern Area Scenario





Oral RfD(Background

Corrected)



Hazard Index(Adult)



Hazard Index(Child)



TOTAL 3.12E-01 8.07E-02

Chemical


Water



Factor




Health Risk Calculations - Dermal Contact with residues on floors after cleaningRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 12b - Southern Area Scenario


Adult IntakeFactor

(threshold)


Hazard Index(Adult)

Child IntakeFactor

(threshold)


Hazard Index(Child)



TOTAL 1.25E-02 4.07E-02

Chemical


Water

DermalAbsorption

factor






Health Risk Calculations - Incidental ingestion of groundwater during irrigationRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 12b - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 5.58E-02 2.89E-02






Health Risk Calculations - Dermal contact with groundwater during irrigationRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 12b - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.30E-04 1.81E-05







Health Risk Calculations - Incidental ingestion of groundwater used in home swimming poolsRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 12b - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.58E-01 1.32E+00






Health Risk Calculations - Dermal contact with groundwater used in home swimming poolsRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 12b - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 1.27E-04 1.61E-04







Health Risk Calculations - Ingestion of Cattle Muscle Tissue (Beef)RAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 12b - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 3.23E-01 7.55E-01

Chemical


Steer)


OralBioavailability

Factor




Health Risk Calculations - Incidental ingestion of surface water during irrigationRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 12b - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 2.20E-03 1.14E-03






Health Risk Calculations - Dermal contact with surface water during irrigationRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 12b - Southern Area Scenario




Hazard Index(Adult)



Hazard Index(Child)



TOTAL 5.13E-06 7.16E-07







Summary of Estimated Health RisksRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 12b - Southern Area Scenario



GROUNDWATER EXPOSURE PATHWAYSIngestion of Potable Groundwater - -Inhalation of Groundwater-Derived Vapours in Indoor Air - -Inhalation of Groundwater-Derived Vapours in Outdoor Air - -Inhalation of Groundwater Vapours (Where GW Enters Trench) - -Inhalation of Groundwater Derived Vapours from Shower/ Irrigation - -Vapours from Flowing Water - -Incidental Ingestion of Groundwater (Bathing or Excavation) - -Dermal Contact with Groundwater (Bathing or Excavation) - -Incidental ingestion of groundwater during showering/bathing 1.8E-01 1.7E+00Incidental ingestion of groundwater during food preparation and cleanup 1.1E-01 -Incidental ingestion of groundwater during domestic laundry 1.1E-02 -Incidental ingestion of groundwater during household cleaning 7.0E-03 3.3E-02Incidental ingestion of groundwater during sprinkler play 4.0E-02 6.6E-01Incidental ingestion of groundwater during washing of animals 1.4E-02 1.1E-02Incidental ingestion of groundwater during washing of vehicles 7.0E-03 -Incidental ingestion of groundwater during irrigation 5.6E-02 2.9E-02Incidental ingestion of groundwater used in home swimming pools 1.6E-01 1.3E+00Dermal contact with groundwater during showering/bathing 1.4E-04 2.0E-04Dermal contact with groundwater during food preparation and cleanup 8.5E-05 -Dermal contact with groundwater during domestic laundry 9.1E-06 -Dermal contact with groundwater residues after washing clothes 3.4E-03 9.2E-03Dermal contact with groundwater during household cleaning 5.6E-06 7.3E-06Incidental ingestion of groundwater residues after washing floors - 2.1E-01Dermal contact with groundwater residues after washing floors - 4.5E-03Dermal contact with groundwater during sprinkler play 6.3E-05 1.6E-04Dermal contact with groundwater during washing of animals 3.3E-05 6.8E-06Dermal contact with groundwater during washing of vehicles 1.6E-05 -Dermal contact with groundwater during irrigation 1.3E-04 1.8E-05Dermal contact with groundwater residues after washing companion animals 1.2E-02 4.1E-02Incidental ingestion of groundwater residues after washing companion animals 3.1E-01 8.1E-02Dermal contact with groundwater used in home swimming pools 1.3E-04 1.6E-04



TOTAL 1.24E+00 4.84E+00




AECOM


Breast Milk Exposure Pathway Assessment

Health Risk Calculations - Cumulative Risk via all Pathways Including Ingestion of Breast MilkRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.2a

Exposure duration - infant 1 yearAveraging time (non-carcinogen) 1 yearBody weight - infant 7 kgBreast milk intake rate 0.85 L/dayExposure frequency - breastfeeding 180 days/year

Scenario 1.2a Scenario 1.2a

Oral RfD (BackgroundCorrected)

Empirical HumanBreast Milk/Serum

Ratio (BSR)

Concentration inHuman Breast Milk

(CBM)

Infant Intake(threshold)

Cumulative ChildIntake (threshold)

Average Daily Intake0-6 Years

Hazard Index0-6 Years

CumulativeChronic Daily

Intake by Mother

Lifetime DailyIntake

0-35 Years


(mg/kg/day) Unitless mg/L (mg/kg/day) (mg/kg/day) (mg/kg/day) (mg/kg/day) mg/kg/day (mg/kg/day) (mg/kg/day)

Perfluorooctane Sulfonate (PFOS) 1.86E-05 8.50E-02 (a) 1.00E-02 8.50E-04 5.09E-05 1.61E-04 1.56E-04 8.39E+00 9.33E-05 1.04E-04 5.59E+00Perfluorooctanoic Acid (PFOA) 1.59E-04 1.02E-02 (b) 4.00E-02 4.08E-04 2.44E-05 7.09E-06 1.06E-05 6.64E-02 5.05E-06 6.00E-06 3.77E-02Perfluorohexane Sulphonate (PFHxS) 2.00E-05 4.25E-02 (c) 1.30E-02 5.53E-04 3.31E-05 9.04E-05 8.84E-05 4.42E+00 7.15E-05 7.44E-05 3.72E+00Perfluorohexanoic Acid (PFHxA) 1.00E-01 - - - 0.00E+00 3.92E-05 3.59E-05 3.59E-04 3.09E-05 3.17E-05 3.17E-04

1.29E+01 9.35E+00(a) PFOS serum concentration reported in fish eaters (Cardno Lane Piper, 2014)

Chemical

Concentration inMother's Blood Serum

(Cserum/plasma)mg/L

(b) Maximum mean serum concentration of PFOA reported in 2002/2003 (Toms et al., 2014)(c) It is stated in the PFHxS Toxicity Profile (ToxConsult, 2016) that "In some populations with elevated PFOS serum concentrations due to PFC contamination exposure PFHxS serum levels may be 50% of the PFOS concentrations".Therefore, the 50% of the PFOS serum concentration was adopted for PFHxS.

Health Risk Calculations - Cumulative Risk via all Pathways Including Ingestion of Breast MilkRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 1.2b


Scenario 1.2b Scenario 1.2b



Ratio (BSR)


(CBM)






Intake by Mother


0-35 Years



Perfluorooctane Sulfonate (PFOS) 1.86E-05 8.50E-02 (a) 1.00E-02 8.50E-04 5.09E-05 1.74E-05 2.44E-05 1.31E+00 1.36E-05 1.54E-05 8.30E-01Perfluorooctanoic Acid (PFOA) 1.59E-04 1.02E-02 (b) 4.00E-02 4.08E-04 2.44E-05 2.14E-06 6.03E-06 3.79E-02 2.04E-06 2.72E-06 1.71E-02Perfluorohexane Sulphonate (PFHxS) 2.00E-05 4.25E-02 (c) 1.30E-02 5.53E-04 3.31E-05 7.65E-06 1.25E-05 6.26E-01 8.05E-06 8.81E-06 4.41E-01Perfluorohexanoic Acid (PFHxA) 1.00E-01 - - - 0.00E+00 1.61E-05 1.48E-05 1.48E-04 1.69E-05 1.66E-05 1.66E-04


Chemical


(Cserum/plasma)mg/L


Health Risk Calculations - Cumulative Risk via all Pathways Including Ingestion of Breast MilkRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.2a


Scenario 2.2a Scenario 2.2a



Ratio (BSR)


(CBM)






Intake by Mother


0-35 Years



Perfluorooctane Sulfonate (PFOS) 1.86E-05 8.50E-02 (a) 1.00E-02 8.50E-04 5.09E-05 7.71E-05 7.91E-05 4.25E+00 2.33E-05 3.29E-05 1.77E+00Perfluorooctanoic Acid (PFOA) 1.59E-04 1.02E-02 (b) 4.00E-02 4.08E-04 2.44E-05 1.69E-06 5.63E-06 3.53E-02 5.53E-07 1.42E-06 8.93E-03Perfluorohexane Sulphonate (PFHxS) 2.00E-05 4.25E-02 (c) 1.30E-02 5.53E-04 3.31E-05 8.80E-06 1.36E-05 6.79E-01 3.48E-06 5.22E-06 2.61E-01Perfluorohexanoic Acid (PFHxA) 1.00E-01 - - - 0.00E+00 3.79E-06 3.47E-06 3.47E-05 1.38E-06 1.74E-06 1.74E-05


Chemical


(Cserum/plasma)mg/L


Health Risk Calculations - Cumulative Risk via all Pathways Including Ingestion of Breast MilkRAAF Base WilliamtownRAAF Base Williamtown, NSWScenario 2.2b


Scenario 2.2b Scenario 2.2b



Ratio (BSR)


(CBM)






Intake by Mother


0-35 Years



Perfluorooctane Sulfonate (PFOS) 1.86E-05 8.50E-02 (a) 1.00E-02 8.50E-04 5.09E-05 7.82E-06 1.57E-05 8.41E-01 3.35E-06 5.46E-06 2.93E-01Perfluorooctanoic Acid (PFOA) 1.59E-04 1.02E-02 (b) 4.00E-02 4.08E-04 2.44E-05 3.82E-07 4.42E-06 2.78E-02 1.61E-07 8.91E-07 5.60E-03Perfluorohexane Sulphonate (PFHxS) 2.00E-05 4.25E-02 (c) 1.30E-02 5.53E-04 3.31E-05 1.85E-07 5.68E-06 2.84E-01 4.64E-08 1.01E-06 5.06E-02Perfluorohexanoic Acid (PFHxA) 1.00E-01 - - - 0.00E+00 3.85E-07 3.53E-07 3.53E-06 8.66E-08 1.32E-07 1.32E-06

1.15E+00 3.50E-01(a) PFOS serum concentration reported in fish eaters (Cardno Lane Piper, 2014)

Chemical


(Cserum/plasma)mg/L



AECOM


Modelled EstimatesAssessment



Modelled Estimates - Upper Scenario


SurfaceWater (mg/L)

Groundwater(mg/L)

Cattle BloodSerum(mg/L)

Cattle Meat(mg/kg)

LivestockMilk (mg/L) Egg (mg/kg) Grazing Flora

(mg/kg) Fruit (mg/kg)Green

Vegetables(mg/kg)

Site: RAAF Base Williamtown Perfluorooctane Sulfonate (PFOS) 0.00935 0.00473 0.0014 modelled 0.02 0.005 0.014 0.002 0.0004 0.003Address: RAAF Base Williamtown, NSW Perfluorooctanoic Acid (PFOA) 0.0006016 0.00009 modelled 0.00 0.000 0.000 0.001 0.0002 0.0002Client: Department of DefenceScenario: Modelled Estimates


Incidental ingestion of soilDermal contact with soilInhalation of surface soil-derived dust in indoor air





Ingestion of potable groundwaterInhalation of groundwater-derived vapours in indoor airInhalation of groundwater-derived vapours in outdoor airInhalation of groundwater vapours during irrigation/ showeringInhalation of vapour emissions from groundwater seepage in an excavationInhalation of vapour emissions from groundwater seepage in a basementIncidental ingestion of groundwater seepage in an excavationDermal contact with groundwater seepage in an excavationIncidental ingestion of groundwater during showering/bathingDermal contact with groundwater during showering/bathing


Dermal contact with groundwater during food preparation and cleanupIncidental ingestion of groundwater during domestic laundryDermal contact with groundwater during domestic laundryDermal contact with groundwater residues after washing clothes


Dermal contact with groundwater during household cleaningIncidental ingestion of groundwater residues after washing floorsDermal contact with groundwater residues after washing floorsIncidental ingestion of groundwater during sprinkler playDermal contact with groundwater during sprinkler playIncidental ingestion of groundwater during washing of animalsDermal contact with groundwater during washing of animalsIncidental ingestion of groundwater residues after washing animalsDermal contact with groundwater residues after washing companion animalsIncidental ingestion of groundwater during washing of vehiclesDermal contact with groundwater during washing of vehiclesIncidental ingestion of groundwater during irrigation


Incidental ingestion of groundwater used in home swimming poolsDermal contact with groundwater used in home swimming pools






Dermal contact with surface water during swimming in creeks/riversIncidental ingestion of surface water during irrigationDermal contact with surface water during irrigation

x Ingestion of home grown eggsIngestion of finfish


x Ingestion of beefIngestion of lambIngestion of rabbit

x Ingestion of milk from livestockx Ingestion of home grown green vegetablesx Ingestion of home grown fruit


Soil (mg/kg)







Calculation of Concentrations in Cattle Meat (Steer) Based on Environmental ConcentrationsRAAF Base WilliamtownRAAF Base Williamtown, NSWModelled Estimates Scenario







SoilConcentration

(Cs)


(Cp)2



(CDIlivestock)


Beef SteerVolume of

Distribution(Vd)




Serum Ratio(TSR)



Perfluorooctane Sulfonate (PFOS) 9.4E-03 2.0E-03 4.7E-03 9.7E-04 1.14E+02 2.10E-01 7.58E-01 1.00E-01 1.97E-02Perfluorooctanoic Acid (PFOA) 0.0E+00 1.0E-03 6.0E-04 1.4E-04 8.00E-01 2.10E-01 7.50E-04 1.00E-01 1.95E-05

Notes:1. Surface water concentrations reported at residential properties.2. Refer to grazing flora model in Attachment 2.

Chemical




Calculation of Concentrations in Cattle Milk Based on Environmental ConcentrationsRAAF Base WilliamtownRAAF Base Williamtown, NSWModelled Estimates Scenario






SoilConcentration

(Cs)


(Cp)2



(CDIlivestock)

Dairy Cow SerumHalf-life (t1/2)

Dairy CowVolume of

Distribution(Vd)



Cattle EmpiricalMilk/SerumRatio (MSR)

Concentration inCattle Milk (Cmilk)


Perfluorooctane Sulfonate (PFOS) 9.4E-03 2.0E-03 4.7E-03 9.7E-04 5.00E+01 2.60E-01 2.69E-01 1.90E-02 5.10E-03Perfluorooctanoic Acid (PFOA) 0.0E+00 1.0E-03 6.0E-04 1.4E-04 1.30E+00 2.60E-01 9.84E-04 8.00E-03 7.87E-06

Notes:1. Surface water concentrations reported at residential properties.2. Refer to grazing flora model in Attachment 2.

Chemical




Calculation of Contaminant Concentrations in EggsRAAF Base WilliamtownRAAF Base Williamtown, NSWModelled Estimates Scenario








L/day 0.61 CCME (1999)

Laying Rate (LR) eggs/day 0.7Professional judgement. Based ona chicken laying 5 eggs per week(260 days per year).



SoilConcentration



(Cw)




Perfluorooctane Sulfonate (PFOS) 0.002 0.00935 1.00E+00 0.0014 5.50E-01 1.36E-02Perfluorooctanoic Acid (PFOA) 0.001 0 1.00E+00 0.00009 1.50E-01 4.61E-04

Chemical




Health Risk Calculations - Ingestion of EggsRAAF Base WilliamtownRAAF Base Williamtown, NSWModelled Estimates Scenario

Oral RfD(Background

Corrected)



Hazard Index(Adult)

Child IntakeFactor

(threshold)


Hazard Index(Child)


Perfluorooctane Sulfonate (PFOS) 0.01359218 1.86E-05 1.46E-03 1.98E-05 1.06E+00 5.33E-03 7.25E-05 3.90E+00Perfluorooctanoic Acid (PFOA) 0.000461453 1.59E-04 1.46E-03 6.72E-07 4.22E-03 5.33E-03 2.46E-06 1.55E-02

TOTAL 1.07E+00 3.91E+00

ChemicalEgg

Concentration





Health Risk Calculations - Ingestion of Cattle Muscle Tissue (Beef)RAAF Base WilliamtownRAAF Base Williamtown, NSWModelled Estimates Scenario

Oral RfD(Background

Corrected)



Hazard Index(Adult)

Child IntakeFactor

(threshold)


Hazard Index(Child)


Perfluorooctane Sulfonate (PFOS) 0.019711685 1.00E+00 1.86E-05 8.16E-05 1.61E-06 8.64E-02 1.92E-04 3.78E-06 2.03E-01Perfluorooctanoic Acid (PFOA) 1.94961E-05 1.00E+00 1.59E-04 8.16E-05 1.59E-09 9.99E-06 1.92E-04 3.74E-09 2.35E-05

TOTAL 8.65E-02 2.03E-01

Chemical


Steer)


OralBioavailability

Factor




Health Risk Calculations - Ingestion of Livestock MilkRAAF Base WilliamtownRAAF Base Williamtown, NSWModelled Estimates Scenario

Oral RfD(Background

Corrected)

Adult IntakeFactor

(threshold)


Hazard Index(Adult)



Hazard Index(Child)

(mg/L) (unitless) (mg/kg/day) (L/kg/day) (mg/kg/day) (unitless) (L/kg/day) (mg/kg/day) (unitless)

Perfluorooctane Sulfonate (PFOS) 0.005102877 1.00E+00 1.86E-05 2.23E-03 1.14E-05 6.11E-01 2.58E-02 1.31E-04 7.07E+00Perfluorooctanoic Acid (PFOA) 7.87344E-06 1.00E+00 1.59E-04 2.23E-03 1.75E-08 1.10E-04 2.58E-02 2.03E-07 1.27E-03

TOTAL 6.12E-01 7.07E+00

ChemicalLivestock MilkConcentration






Health Risk Calculations - Ingestion of FruitRAAF Base WilliamtownRAAF Base Williamtown, NSWModelled Estimates Scenario

Oral RfD(Background

Corrected)



Hazard Index(Adult)

Child IntakeFactor

(threshold)


Hazard Index(Child)

(mg/kg) (mg/kg/day) (kg/kg/day) (mg/kg/day) (unitless) (L/kg/day) (mg/kg/day) (unitless)

Perfluorooctane Sulfonate (PFOS) 0.0004 1.86E-05 2.72E-03 1.09E-06 5.86E-02 1.18E-02 4.71E-06 2.53E-01Perfluorooctanoic Acid (PFOA) 0.0002 1.59E-04 2.72E-03 5.45E-07 3.42E-03 1.18E-02 2.36E-06 1.48E-02

TOTAL 6.20E-02 2.68E-01

ChemicalFruit

Concentration





Health Risk Calculations - Ingestion of VegetablesRAAF Base WilliamtownRAAF Base Williamtown, NSWModelled Estimates Scenario

Oral RfD(Background

Corrected)



Hazard Index(Adult)

Child IntakeFactor

(threshold)


Hazard Index(Child)

(mg/kg) (mg/kg/day) (kg/kg/day) (mg/kg/day) (unitless) (L/kg/day) (mg/kg/day) (unitless)

Perfluorooctane Sulfonate (PFOS) 0.003 1.86E-05 2.45E-03 7.35E-06 3.95E-01 5.07E-03 1.52E-05 8.18E-01Perfluorooctanoic Acid (PFOA) 0.0002 1.59E-04 2.45E-03 4.90E-07 3.08E-03 5.07E-03 1.01E-06 6.37E-03

TOTAL 3.98E-01 8.25E-01

ChemicalVegetable

Concentration





Summary of Estimated Health RisksRAAF Base WilliamtownRAAF Base Williamtown, NSWModelled Estimates Scenario


DIETARY EXPOSURE PATHWAYSIngestion of finfish from the Site - -Ingestion of breast milk by infants - -Ingestion of home grown beef 8.6E-02 2.0E-01Ingestion of home grown livestock milk 6.1E-01 7.1E+00Ingestion of home grown eggs 1.1E+00 3.9E+00Ingestion of home grown fruit 6.2E-02 2.7E-01Ingestion of home grown green vegetables 4.0E-01 8.2E-01Ingestion of home grown lamb - -Ingestion of rabbit meat - -Ingestion of crustaceans and oysters - -

TOTAL 2.23E+00 1.23E+01


Addendum to Off-Site Human Health Risk …...AECOM RAAF Base Williamtown Addendum to Off-Site Human...

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