Phase 1 Report - Nottinghamshire
Transcript of Phase 1 Report - Nottinghamshire
B W B C o n s u l t i n g L t d ¤ R e g i s t e r e d i n E n g l a n d 5 2 6 5 8 6 3
ENVIRONMENT GROUP
Jones Homes (Northern) Ltd Phase 1A Development, Harworth Colliery Scrooby Road
Material Classification, Remediation and
Earthworks Principles Assessment Report
B W B C o n s u l t i n g L t d ¤ R e g i s t e r e d i n E n g l a n d 5 2 6 5 8 6 3
ENVIRONMENTAL
Jones Homes (Northern) Ltd Phase 1A Development, Harworth Colliery Scrooby Road
Material Classification, Remediation and
Earthworks Principles Assessment Report BWB Consulting Ltd Birmingham Livery Place, 35 Livery Street, Colmore Business District, Birmingham, B3 2PB T: +44(0) 121 233 3322, F: +44(0) 121 233 3318
Leeds Whitehall Waterfront, 2 Riverside Way, Leeds LS1 4EH T: +44(0) 113 2338000 F: +44(0) 113 2450654 London
15 Weller Street, London, SE1 1QU T: +44(0) 20 7234 9122
Manchester 4th Floor Carvers Warehouse, 77 Dale Street Manchester, M1 2HG
T: +44(0) 0161 2334260 Nottingham 5th Floor Waterfront House, Station Street, Nottingham NG2 3DQ T: +44(0) 115 924 1100 E: [email protected]
Date: November 2013
AUTHOR:
Simon Steele MEng (Hons) FGS
CHECKED:
Ashley Lowe BSc CGeol PGeol
FGS
APPROVED:
Ashley Lowe BSc CGeol PGeol FGS
REPORT REF
NO:
NTE2034E/01/V5
STATUS:
FINAL
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Document Revision Status
Issue Date Comments
V1 June 2012 Final
V2 July 2012 Final with amendments to earthworks principles
V3 August 2012 Final with amendments to paragraphs 3.8 and 3.9 to exclude the use of either lime or cement modification in accordance with NHBC requirements
V4 September 2013
Amendments to earthwork proposals
V5 November 2013
Final with rewording of paragraph 6.7
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CONTENTS PAGE
1.0 INTRODUCTION 1
Instruction 1
Objectives 1
Limitations 1
2.0 SITE SETTING 3
Site Location 3
Site Description 3
Published Geology 4
Site History 4
Previous Reports 4
3.0 Material Properties 5
Earthworks Material Properties 5
Calorific Value 7
Asbestos 8
Environmental 8
4.0 Remediation 10
Gas Protection Measures 11
5.0 Settlement Review 13
Proposed Structures 13
Conceptual Ground Model 13
Settlement Calculations 14
Settlement Results 15
6.0 EARTHWORKS PRINCIPLES 17
Material Quantities 17
End Specification 17
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TABLES
Table 1 Summary of Earthworks Geotechnical Test Results
FIGURES
Figure 1 Site Location Plan (included in main text) Figure 2 Site Layout and Monitoring Well Location Plan Figure 3 Likely Foundation Solution Zones
APPENDICES
Appendix 1 CLEA Statistical Assessment – Colliery Spoil Appendix 2 CLEA Statistical Assessment – Ash/Clinker Fill Appendix 3 BWB GSAC Derivation
Appendix 4 General Fill (above 2m of Formation) Validation Criteria Appendix 5 Engineered Fill (below 2.0m of Formation) Validation Criteria
Appendix 6 Imported Topsoil/ Subsoil Validation Criteria Appendix 7 Proposed Site Layout Plan
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1.0 INTRODUCTION
Instruction
1.1 BWB Consulting (BWB) was instructed by Jones Homes (Northern) Ltd (the Client) to carry out a further materials classification and remediation/
earthworks assessment at the Phase 1A Development Area, Harworth Colliery, Scrooby Road, Harworth, in order to address further NHBC
requirements. Details of the project brief are included in BWB email proposal dated 4th May 2012.
Objectives
1.2 The overall objective of the further assessment is to:
Assess the soils suitability and likely acceptability envelope for use
as engineered fill; Assess the soils suitability in accordance with reassessed
engineering and remediation criteria; Determine earthworks end specification parameters; and Assess the likely foundation settlement performance of expected
foundation types.
Limitations
1.3 The assessments and interpretation have been made in line with legislation and guidelines in force at the time of writing, representing best practice at that time.
1.4 All of the comments and opinions contained in this report, including any conclusions, are based on the information obtained by BWB during our
investigations.
1.5 There may be other conditions prevailing on the site which have not been disclosed by this investigation and which have not been taken into account
by this report. Responsibility cannot be accepted for conditions not revealed by the investigation.
1.6 Any diagram or opinion of the possible configuration of the findings is conjectural and given for guidance only and confirmation of intermediate ground conditions should be considered if deemed necessary.
1.7 Except as otherwise requested by the Client, BWB is not obliged and disclaims any obligation to update the report for events taking place after:
a) the date on which this assessment was undertaken; and b) the date on which the final report is delivered.
1.8 BWB makes no representation whatsoever concerning the legal
significance of its findings or to other legal matters referred to in the following report.
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1.9 This report has been prepared for the sole use of Jones Homes (Northern)
Ltd. No other third parties may rely upon or reproduce the contents of this report without the written permission of BWB. If any unauthorised third party comes into possession of this report they rely on it at their own
risk and the authors do not owe them any Duty of Care or Skill.
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2.0 SITE SETTING
Site Location
2.1 The site is located at Harworth Colliery in Harworth, located at national grid reference 461890, 391460. The location of the site is shown in
Figure 1.
Figure 1: Site Location Plan
Reproduced from the Ordnance Survey 1:25,000 scale map with the permission of the controller of Her Majesty’s Stationery Office Crown Copyright Reserved. OS Licence number 100013665.
Site Description
2.2 The Phase 1A development area comprises a portion of land, approximately 5.82ha in size, which forms part of the wider Harworth
Colliery site located to the south of Bircotes and Harworth village.
2.3 The Phase 1A development area is bound to the north by Scrooby Road, by residential properties to the east and west and other areas of the
colliery to the south.
2.4 The site is predominately occupied by a former backfilled brick pit,
recently cleared of vegetation. Three settling ponds are located to the southeast of the site. The northwest portion of the site is occupied by a former plant nursery, separated from the site by chainlink fencing and
high hedges.
2.5 The site slopes from circa 28m AOD in the east to circa 17m AOD in the
west.
2.6 The layout of the site with the main features is presented as Figure 2.
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Published Geology
2.7 The site is underlain by Glacial Till overlying the Sherwood Sandstone Group overlying Permian Marl and Limestone deposits and productive Coal Measures. The Sherwood Sandstone and Permian Limestone are classified
as Principal Aquifers in the region. The Permian Marl acts as an aquiclude between the Sherwood Sandstone and Permian Limestone.
Site History
2.8 From 1854 to 1904 a brick and tile works is shown to be present across the Phase 1A site area, followed by various phases of filling and settling
pond excavation.
Previous Reports
2.9 The following reports have recently been completed with respect to the site:
BWB Consulting Ltd for UK Coal Mining Ltd, Phase 1 Geo-Environmental Desk Study, Harworth Colliery, Harworth, Doncaster, Reference UKC020HE/01/V1, dated October 2007;
BWB Consulting Ltd for UK Coal Mining Ltd, Phase 2 Geo Environmental Assessment ‘Status’ Report, Harworth Colliery, DN11
8AB, Reference UKC020HE/02/V3, dated May 2011;
BWB Consulting Ltd for Harworth Estates Ltd, Phase 2 - Ground Investigation Factual Report, Phase 1A Development, Scrooby Road,
Harworth, Reference NTE1017/01/V1, dated May 2011;
BWB Consulting for Jones Homes (Northern) Ltd, Further
Delineation of Infilled Pit Letter Report, Reference SS/DRW/NTE1017E/221111, dated 22nd November 2011; and
BWB Consulting for Jones Homes (Northern) Ltd, Material Properties
Factual Letter Report, Reference SS/DRW/NTE2034, dated 14th June 2012.
2.10 The contents of the above reports have been used to inform sections of this report relevant to the Phase 1A site area; although familiarity and access to these has been assumed on the part of the reader, this report is
designed to assess pertinent environmental and geotechnical aspects pertaining to the proposed development of Phase 1A area only.
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3.0 MATERIAL PROPERTIES
3.1 Geotechnical and environmental material properties determined from relevant laboratory testing undertaken during all recent and historical phases of investigation of the Phase 1A Development area are
summarised in the following sections (reports referenced in Section 2.0).
3.2 Excavated soils, both ash/clinker fill and colliery spoil, should be visually
sorted to remove any significant extraneous items which would otherwise determine the soils as unsuitable. To ensure suitability for reuse, the significant quantities of whole glass bottles and glass fragments should be
separated by screening from ash/clinker material, hand sorted to remove other extraneous items, and reused/recycled as a glass aggregate.
Separate brick (e.g. from existing buried structures and stockpiled brick “seconds” encountered) may be crushed, screened and reused as a
selected clean granular fill material.
3.3 The resultant void would be back backfilled with geotechnically and environmentally suitable site won materials and imported material (in
order to address the likely mass deficit after compaction of ashy fill material) in order to provide a developable platform suitable of the
proposed residential development.
Earthworks Material Properties
3.4 The pertinent geotechnical results relating to the re-use of materials for
the proposed earthworks fill are summarised in Table 1.
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Table 1: Summary of Earthworks Geotechnical Test Results
Material Type
Natural Moisture Content
Plasticity Index
Earthworks Class
Compaction (2.5kg Rammer)
Maximum Dry Density
Optimum Moisture Content
Site Won Colliery Spoil
(8 samples)
Min. 12%
Avg. 16.1%
Max. 24%
(6 samples)
Min. 14%
Avg. 17.7%
Max. 22%
2C - 6 samples
(4 samples)
Min. 1.67 Mg/m2
Avg. 1.69 Mg/m2
Max. 1.72 Mg/m2
(4 samples)
Min. 10%
Avg. 12.8%
Max. 14%
Site Won Ash/Clinker
Fill
(8 samples)
Min. 25%
Avg. 28%
Max. 30%
- 2C - 2 sample
(2 samples)
Min. 0.96 Mg/m2
Avg. 0.965 Mg/m2
Max. 0.97Mg/m2
(2 samples)
Min. 30%
Avg. 36.5%
Max. 43%
Off Plot Colliery
Spoil - Bund
(1 sample)
18%
(1 sample)
18% 2C - 1 sample
(1 sample)
1.57 Mg/m2
(1 sample)
17%
Off Plot Colliery
Spoil - Tip No. 1
(21 samples)
Min. 9.9%
Avg. 17.6%
Max. 26%
(11 samples)
Min. 17%
Avg. 19.8%
Max. 24%
2C - 7 samples
1A - 1 samples
(5 samples)
Min. 1.49 Mg/m2
Avg. 1.67 Mg/m2
Max. 1.79 Mg/m2
(5 samples)
Min. 10%
Avg. 14.72%
Max. 20%
Off Plot Colliery Spoil - Eastern
Stockpiles
(5 samples)
Min. 10%
Avg. 14.6%
Max. 18%
(2 samples)
Min. 18%
Avg. 18.5%
Max. 19%
2C - 3 samples
1A - 2 samples
(3 samples)
Min. 1.70 Mg/m2
Avg. 1.72 Mg/m2
Max. 1.74 Mg/m2
(3 samples)
Min. 10%
Avg. 13%
Max. 16%
Note: Number in () brackets is the number of samples tested.
3.5 The geotechnical test results indicated that all colliery spoil (site won and
from the wider site area) comprise similar materials which are likely to behave similarly geotechnically.
3.6 The results of the compaction testing reveals that the natural moisture content is typically at 2% to 4% wet of the optimum moisture content. In all cases, the natural moisture content places the material within 95% of
the maximum dry density on their respective compaction curves.
3.7 For all colliery spoil, CBR testing on the compacted samples resulted in
values ranging between 9% and 20%, with hand shear vane testing in excess of 130 kPa (although it should be noted that the colliery spoil has a high granular fraction).
3.8 For the ash/clinker fill, CBR testing on compacted samples resulted in values ranging between 26% and 32%.
3.9 The potentially expansive nature of site won ash/clinker fill material shall be required to be assessed in order to determine its suitability prior to its use as a fill material.
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3.10 The suitability of earthworks materials has been assessed on the basis of
the testing carried out as part of this investigation. The materials encountered on site may vary from those analysed; furthermore, inclement weather or winter working may result in materials being
unsuitable for incorporation within the works.
3.11 Preliminary lime modification test results undertaken of representative
combined samples of both site won and wider site colliery spoil indicated that the 28 day soaking of lime modified soils (2.5% lime) resulting in swelling less than 4 mm. Notwithstanding this, the use of Lime and or
Cement modified soils shall however be prohibited on this site due to potentially high sulphate conditions as required by NHBC.
3.12 Stockpiled materials often deteriorate due to water infiltration and they may become unsuitable for incorporation in the works; adequate sealing
of stockpiles should be undertaken where materials are not intended for immediate use.
Chemical Attack on Buried Concrete
3.13 The site won colliery spoil is anticipated to be pyritic in nature because of the likely coal/ carbonaceous content (although limited as Harworth
Estates/ UK Coal wish to retain all material with high proportion of coal and coal fines for product recovery).
3.14 For the colliery spoil (from all sources), water soluble sulphate
concentrations in soils varied from 636 mg/l to 4140 mg/l with soil pH values ranging from 2.5 to 7.5.
3.15 Total sulphur concentrations ranged from 0.30% to 1.26 %.
3.16 In accordance with the recommendations of BRE Special Digest 1, ‘Concrete in Aggressive Ground’ 2005, the conditions of the soils at the
site would therefore likely be classified as Design Sulphate Class DS-4 and ACEC Class AC-5 for soils and groundwater, when considering the most
appropriate type of concrete to be used at the site in order to resist chemical attack from elevated sulphate present in the soils (assuming mobile groundwater in potentially pyritic soils).
3.17 This assessment should be reconfirmed after assessment of appropriate compliance testing of materials after completion of the proposed
earthworks.
Calorific Value
3.18 Calorific values of the colliery spoil ranged between 1.1 MJ/kg and 7.5
MJ/kg (6 no. samples, average of 4.5 MJ/kg). The calorific values of ash/ clinker fill to be confirmed after assessment of appropriate compliance
testing of materials prior to placement as fill.
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3.19 There is no statuary guidance for the assessment of potential
combustibility of in-situ material, however guidance given in ICRCL Guidance note 61/84 ‘Notes on the fire hazards of contaminated land’ states that material with calorific values in excess of 10 MJ/kg are likely to
ignite, and there is an unacceptable risk of smouldering when the calorific value of soils exceeds 7 MJ/kg (to be adopted as the screening criteria).
Asbestos
3.20 No visual evidence of asbestos containing materials was observed within the soils matrix during the intrusive investigations.
3.21 Of the 14 no. colliery spoil samples screened for the presence of asbestos, 3 no. samples detected fibres within the soils matrix (loose fibres within
the soil) located both in-situ and across the colliery site. These 3 no. samples were further tested for asbestos quantification, which did not
reveal any concentrations above the limits of detection (0.001%). 2 no. ash/clinker samples also screened for the presence of asbestos; no fibre were detected.
3.22 In the absence of statutory guidance, recommendation given in the Dutch Asbestos Guidelines (report 711701034) have been adopted as a
screening criteria; any soils containing visually identifiable asbestos material or soil bound asbestos fibres greater than 0.01% w/w (100 mg/kg) shall be deemed unsuitable for re-use as engineered fill. This
value has not been exceeded in the samples tested.
Environmental
3.23 The site won colliery spoil has been initially sampled and analysed for a wide number of potential contaminants, the results of which are presented within Appendix 1. The results of the analysis have identified elevated
concentrations of arsenic and naphthalene in the majority of samples analysed. Sample concentrations are broadly similar and it has been
concluded that these elevated concentrations are likely to represent naturally occurring background levels of impurities within the colliery spoil. Low level longer chain TPH fractions are considered representative
of carbonaceous coal fragments within this fill.
3.24 The site won ash/clinker fill were also analysed, as presented within
Appendix 2. The results of the analysis indicated elevated concentrations of arsenic, chromium, lead and naphthalene.
3.25 The material has been assessed against BWB’s Generic Site Assessment
Criteria (GSAC) developed by BWB using the CLEA model 1.06 and the updated CLEA framework (2009) for assessing risk from soil
contamination to human health. Details of the derivation of GSACs are presented in Appendix 3.
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3.26 The colliery spoil material has been found to be chemically suitable for use
as general fill across the site (well within a public open space assessment criteria), but it would not be suitable for use at surface level in private residential gardens. The CLEA results are presented as Appendix 1.
3.27 The ash clinker fill has been found suitable for placement as fill at depth (deeper than 2m below formation), subject to incorporation of basic
radon/ gas protection measures. The CLEA results are presented as Appendix 2.
3.28 A cover system will therefore be required in sensitive area (e.g. private
gardens), comprising delineation of the upper surface of the fill using a geotextile membrane, coupled with a surface capping layer (minimum
thickness of 500mm) of imported, chemically suitable subsoil/topsoil.
3.29 Where natural materials are removed from foundation excavations or in
order to create a level fill platform (e.g. in the vicinity of the traditional spread foundation zone described by Figure 3 or natural soils removed from the base of the bulk earthworks excavations elsewhere), these may
be segregated and, subject to compliance testing, could be utilised as subsoil within the cover system in the residential private garden areas.
3.30 Re-engineered colliery spoil soils shall be suitable for placement beneath building footprints or beneath hard stand areas.
3.31 Processed ash/clinker fill shall be suitable for placement at depths greater
than 2m below formation.
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4.0 REMEDIATION
4.1 To ensure that suitably clean material (with respect to human health) is placed during the proposed earthworks, the following validation criteria have been adopted.
4.2 The validation criteria to be adopted are based on the Generic Site Assessment Criteria (GSAC) developed by BWB using the CLEA model
1.06 and the updated CLEA framework (2009) for assessing risk from soil contamination to human health.
General Engineered Fill above 2.0m of Required Formation
4.3 Relevant pathways associated with the general fill are considered to be:
Soil Ingestion;
Dermal Contact;
Particulate Inhalation; and
Inhalation of Vapour outdoors.
4.4 Indoor inhalation pathways will be suitably mitigated by the proposed basic gas protection measures (either basic radon or appropriate
characteristic gas situation assessed and applied to the development) which are to be installed in residential properties.
4.5 The general fill will be suitable for use within 2m of final formation directly under all hardcover areas of the site, including pavements, footpaths and under building footprints. Ash/ clinker fill will not be suitable for this
purpose.
4.6 The general fill will require periodic compliance testing to ensure it is
chemically consistent. The validation criteria to be adopted for these materials, which have been designed to yield a material which would be suitable for use in a public open space, are presented as Appendix 4.
Engineered Fill Below 2.0m of Required Formation Level
4.7 Relevant pathways associated with deeper fill are considered to be:
Inhalation of vapours outdoors.
4.8 Engineered fill meeting the below criteria will be suitable for placement as fill below 2m of final formation only.
4.9 Indoor inhalation pathways will be suitably mitigated by the proposed basic gas protection measures (either basic radon or appropriate
characteristic gas situation assessed and applied to the development) which are to be installed in residential properties.
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4.10 The validation criteria to be adopted for these materials, which have been
designed to yield a material which would be suitable for placement at depth below residential properties, are presented as Appendix 5.
Imported Topsoil/ Subsoil
4.11 Relevant pathways associated with topsoil/subsoil to be provided in residential private gardens are considered to be:
Soil Ingestion;
Dermal Contact;
Particulate Inhalation;
Ingestion of Site Grown Vegetables and Attached Soil; and
Inhalation of Vapours Outdoors.
4.12 The validation criteria to be adopted for these materials (to control identified pollutant linkages) are presented as Appendix 6.
4.13 Colliery spoil and ash/clinker fill soils are not suitable for use as imported subsoil in private residential gardens; excavated natural soils will be suitable for this purpose, subject to confirmatory compliance testing.
Gas Protection Measures
4.14 Two phases of ground gas monitoring have been undertaken in monitoring
wells installed within the Phase 1A development area. The first comprised 1 no. visit on the 20th March 2009 (WS201 and WS202). The second phase of monitoring undertaken to date comprised 3 no. visits between 5th
April and 15th April 2011 (WS201, WS202, WS304 and WS305). The positions of the relevant monitoring well locations are shown on Figure 2.
It is expected, based on the monitoring undertaken, that this area of the site (i.e. in the vicinity of the area for traditional spread foundations as described by Figure 3) may be classified as Green in accordance with
CIRIA C665.
4.15 It is expected at this stage that the remainder of the site (located over
proposed engineered fill) will be classified as Amber 1. The gassing regime of the resultant development platform should be confirmed upon completion of the Earthworks.
4.16 Gas protection measures are also required to mitigate indoor inhalation pathways; furthermore it is also recommended/ advised by the Health
Protection Agency that at least basic radon protection measures should be installed in all new buildings.
4.17 Further gas monitoring should be undertaken and assessed in accordance
with CIRIA C665. It is recommended that this should be undertaken at a
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frequency of 9 events over a 6 month period (the generation potential of
the earthworks fill is considered to be low, as potential gas generation sources will be removed during the earthworks and replaced with engineered fill of very limited degradability/ organic content (to be
confirmed by validation testing); and 3 events over a 3 month period to augment the data (WS201, WS202, WS304 and WS305) obtained for
areas of the site not located on engineered fill to meet the recommended frequency of testing.
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5.0 SETTLEMENT REVIEW
5.1 This assessment provides an indication of the likely expected performance of the proposed engineered fill to prepare it for a proposed residential development. Consideration has also been given to the use of traditional
spread foundations in areas where engineered fill is not required to reach formation. A preliminary plan indicating expected foundation zones is
presented as Figure 3.
Proposed Structures
5.2 There is mixture of proposed low rise residential building types ranging
from circa 8m x 9m detached, to 10m x 18m terraced plots; it is anticipated that raft foundation loads would not exceed 35 kPa and wall
line loads for tradition spread foundations are not expected to exceed 65 kN/m.
5.3 Proposed final formations are either at or below final existing topographic levels, therefore no additional loads are expected due to additional soil surcharge.
5.4 The proposed site layout plan is included as Appendix 7.
Conceptual Ground Model
5.5 Based on the ground profile revealed by the 2011 intrusive investigation, it is evident that varying thicknesses of engineered fill will overlie cohesive Glacial Till. Hand shear vane measurements of the undrained shear
strength (cu) in the Glacial Till indicate deposits likely to be encountered at the base of the earthworks excavation are likely to exceed 100 kPa (this
concurs with SPT ‘N’ values in the order of 20, which equates to an approximate undrained shear strength of 105kPa - Stroud 1974 assuming a multiplication factor f1 of 5.2 based on a plasticity index of 20%).
5.6 Furthermore, for this material, based on an average Plasticity Index value of 20% (BWB investigation) and the relationships proposed by Stroud &
Butler (1975), the drained modulus E’ (kPa) = cu (kPa) x 230 = 23,000 MPa (modulus of compressibility mv = 1/E’ = 4.35x10-5 kPa).
5.7 The Drained Modulus of Constrained Compressibility for the earthworks fill
of E’=15 MPa (mv = 6.67x10-5 kPa) has been assumed; equivalent to the average determined by laboratory testing, as a likely value to be achieved
within the engineered fill which has been assumed to achieve a cu in the order of 80 kPa;
5.8 Typically for well compacted cohesive fill, values for the coefficient of
secondary compression, Cα, may be in the range of 0.001 to 0.005 (0.1% to 0.5%), as indicated in BRE 424, 2001; therefore 0.1% has been
adopted as the design parameter in this case (the engineered fill will be well compacted and strictly controlled).
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5.9 Resting groundwater levels recorded during the 2011 BWB investigation
revealed perched groundwater overlying the Till which are considered to present water associated with the settlement lagoons, one of which (now bypassed) was known to leak. All settlement lagoons are to be removed
during the proposed earthworks and groundwater controlled throughout, therefore no significant groundwater would be expected to be encountered
post earthworks.
Settlement Calculations
5.10 Settlement assessments have been undertaken in general accordance
with the methods outlined in Eurocode 7 (BS EN 1997-1) in order to determine the settlement Serviceability Limit State (SLS). It should be
noted that settlement calculations provide an indication of likely settlement, and should not be regarded as accurate.
5.11 The Boussinesq formula had been used to calculate the vertical stress under a loaded rectangular area; Eurocode 7 states that depth of influence may be taken as the depth at which the effective vertical stress
due to foundation load is 20% of the effective overburden stress.
5.12 Conservatively, settlement characteristics for the engineered fill are
assumed to be predominantly cohesive.
Immediate Settlement (s0)
5.13 Undrained settlements which occur virtually instantaneously on application
of load.
5.14 The adjusted elasticity method (Eurocode 7) has been utilised to calculate
immediate settlement (using the principles of superposition and layering):
5.15 s0 = p.B.f / E
5.16 (where p = applied pressure, B = width of loaded area, f = influence factor and E =
drained modulus)
Consolidation Settlement (s1)
5.17 Drained consolidation caused by the applied load of the proposed structure.
5.18 The odometer (one-dimensional deformation) method of assessing consolidation settlement has been utilised, adopting Skempton and Bjerrum (1957) empirical correction factors allowed by Eurocode 7 (using
the principle of layering):
5.19 S1 = σapp.mv.h.μ
5.20 (where mv = 1/E’, h = soil thickness, σapp= applied stress and μ= correction factor)
PHASE 1A DEVELOPMENT, HARWORTH COLLIERY
MATERIAL CLASSIFICATION, REMEDIATION AND EARTHWORKS PRINCIPLES ASSESSMENT REPORT
SEPTEMBER 2013
NTE2034E/01/V5
15
Inundation Settlement - Collapse Compression (s2)
5.21 Settlement induced by recovering groundwater levels.
5.22 The vulnerability to collapse compression is linked to the bulk permeability of the clay fill. The cohesive fill is to be placed according to a specification
which will result in a voids ratio less of than 5%. This will generally lead to the placed material achieving a permeability within the range 1x10-9 to
1x10-10 m/s. BRE 424:2001 indicates that engineered materials of such low permeability are not vulnerable to collapse compression.
Secondary Compression (s2)
5.23 The long term ‘creep’ consolidation of fill material caused by the self weight of the fill.
5.24 An estimate of the time dependant secondary settlement due to self weight of the fill is given by:
5.25 Δh =h.Cα.log (t2/t1) (BRE 421:2001)
5.26 Δh= secondary compression settlement, h = depth of fill, Cα = coefficient of secondary
compression
5.27 Given the expected length of time for deposition of the fill up to final formation and completion of the proposed development, for the
construction phase of secondary compression, t1=1 years and t2=50 years will be adopted for the purpose of this assessment.
Settlement Results
Engineered Fill
Table 1:
Depth of Engineered
Fill
Immediate Settlement
(s0)
Consolidation Settlement
(s1)
Secondary Settlement
(s2)
s0 + s1 stotal
(after 50
years)
(m) (mm) (mm) (mm) (mm) (mm)
1 0.9 11.6 1.7 13 14
2 0.9 12.4 3.4 13 17
3 0.9 13.2 5.1 14 19
4 1.0 14.1 6.8 15 22
5 1.0 14.9 8.5 16 24
6 1.0 15.7 10.2 17 27
7 1.1 16.4 11.9 18 29
5.28 The results above indicate that total predicted settlements of proposed low rise semi rigid raft founded structures are unlikely to exceed 25mm
within several years after completion of development (immediate and
PHASE 1A DEVELOPMENT, HARWORTH COLLIERY
MATERIAL CLASSIFICATION, REMEDIATION AND EARTHWORKS PRINCIPLES ASSESSMENT REPORT
SEPTEMBER 2013
NTE2034E/01/V5
16
consolidation settlements); this will increase to less than 30mm after 50
years.
5.29 Maximum predicted differential settlements after 50 years will be in the order of 15mm (between 1m and 7m of fill); should this occur over a
minimum raft dimension of 8m this would result in a differential settlement in the order of 1:530 (less than 1:500 recommended in
Eurocode 7, and less than 1:400 suggested in BRE Digest 475 for low rise buildings.
5.30 It is unlikely that such variation in fill thickness would occur beneath
single plot area, as the base of excavation is limited to 1:10 (equivalent to a change in fill less that 10% across single plot areas) resulting in
differential settlement significantly less the maximum calculated.
Traditional Spread
5.31 Settlement assessment has indicated that total settlement for traditional strip foundation would be less that 15mm based on assessment of 0.6m wide wall line loads up to 65 kN/m for strip foundations placed on the stiff
glacial till. Differential settlements are considered to be negligible by calculation.
5.32 The volume change potential should be considered in any foundation schedule for structures and services located within the influence zone of trees or bushes (proposed, existing or to be removed) and appropriate
precautions and/or founding depths should be designed accordingly.
5.33 In areas where shallow or trench fill foundations are to be employed in the
predominantly high plasticity clays with a low to medium volume change potential (Plastic Limit ranging between 14% and 26%), it is recommended that foundations are designed in accordance with NHBC
Standards Chapter 4.2 (2011) with respect to building near trees.
PHASE 1A DEVELOPMENT, HARWORTH COLLIERY
MATERIAL CLASSIFICATION, REMEDIATION AND EARTHWORKS PRINCIPLES ASSESSMENT REPORT
SEPTEMBER 2013
NTE2034E/01/V5
17
6.0 EARTHWORKS PRINCIPLES
6.1 The existing ash and clinker fill with associated brick structure and other extraneous items are to be excavated and removed and the existing settlement lagoons are to be drained, and organic matter, lagoon
deposits/ soft soils removed to reveal the underlying competent strata (Glacial Till).
6.2 Full details of the proposed earthworks are presented within the BWB Earthworks Specification report, reference NTE2042E/02/V2, dated June 2012 and the following earthworks drawings (or latest revision):
BWB Drawing reference NTE/2034/HD100 P2, Proposed Formation Level Contours;
BWB Drawing reference NTE/2034/HD101 P2, Base of Excavation Contour Levels;
BWB Drawing reference NTE/2034/HD102 P2, Earthworks Sections; and
BWB Drawing reference NTE/2034/HD103 P2, Isopachytes
Excavation to Formation.
6.3 The resultant void is to be backfilled with suitable colliery spoil both site
won and sourced from the wider colliery site, appropriately classified as Class 1 or Class 2 in accordance with Specification for Highway Works (SHW) and placed following the general method principles set out in the
SHW achieving the end specification detailed below.
Material Quantities
6.4 Based on the proposed earthworks models, it is expected that approximately 137,700m3 of material is required to be excavated, of which approximately 60,000m3 is ash and clinker fill which is expected to
lose 25% to 30% volume due to removal of unsuitable material and compaction. Approximately 95,000m3 is estimated to be required to fill
the resultant void to formation; leaving a requirement for approximately 30,000m3 of colliery spoil to be disposed off-site.
End Specification
6.5 This material should be placed in an engineered fashion in order to meet an end specification, to ensure that 95% of the maximum dry density is
achieved for all fill, to be placed within +4% and -2% of optimum moisture content, as determined by laboratory testing. In addition to this, less than 5% total air void criteria will be enforced.
6.6 In order to ensure that the engineered fill is suitable for the proposed residential development, a minimum expected modulus of subgrade
reaction (K) of at least 14,000 kN/m2/m (which equates to a minimum
PHASE 1A DEVELOPMENT, HARWORTH COLLIERY
MATERIAL CLASSIFICATION, REMEDIATION AND EARTHWORKS PRINCIPLES ASSESSMENT REPORT
SEPTEMBER 2013
NTE2034E/01/V5
18
settlement of 10 mm based on 200% of the maximum expected design
load of 35 kPa) will be required. This modulus subgrade reaction is approximately equivalent to a CBR of 3%.
6.7 To ensure that an appropriate level of compaction has been achieved
insitu CBR testing (DCP or MEXE Probe) to be undertaken on a 50m grid per layer (minimum 3no. tests per layer) to achieve an average CBR of
4% with no single test result less than 3% is achieved to ensure to achieved.
6.8 On completion of the earthworks, monument settlement markers shall be
placed across the engineered fill and monitored for a period of 6 weeks following completion of the earthworks.
6.9 Maintained area load tests should be undertaken at formation (in accordance with the methods detailed in BS1377-9:1990). A minimum of
three tests shall be completed over the deepest areas of fill with an applied load equivalent to 150% of the proposed design pressure (i.e. 35kPa x 150% = 52.5kPa), and should be maintained for a period of 6
weeks. Level monitoring should be undertaken immediately after each incremental load is applied then 1hour, 24 hrs, 2 days, 7 days, 12 days,
22 days and 42 days (6 weeks) after final loading then immediately after unloading of the two equal increments applied. Maximum ‘maintained load’ settlement deviation criteria of less than 25mm over the 6 week
period will be acceptable.
BWB Consulting Ltd November 2013
FIGURES
FIGURE 2
SITE LAYOUT AND MONITORING WELL LOCATION PLAN
MH
R
27
26
26
26
26
25
25
26
27
28
28
29
29
29
29
30
29
29
29
29
27
27
26
26
26
27.1
3
27.0
2
27.4
6
27.4
8
27.8
0
28.0
3
28.2
4
29.2
027.9
227.3
327.0
226.3
1
25.0
9
24.3
1
23.5
3
21.3
1
19.7
3
19.0
6
18.3
2
18.2
218.0
317.9
1
17.9
318.3
6
18.2
9
18.1
9
18.5
9
18.4
118.7
019.4
2
21
21
21
21
21
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21
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20
20
20
2020
20
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18 19
19
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21
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25
24
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20.1
3
20.2
4
20.2
322.3
5
22.4
5
20.4
6
20.3
4
20.3
3
20.8
220.7
823.3
2
24.0
9
21.8
9
21.6
3
21.5
4
22.4
0
22.7
8
23.0
5
24.7
724.7
0
23.6
8
23.6
8
23.3
3
24.5
225.0
2
25.2
0
25.2
0
26.1
4
25.8
0
25.3
6
25.6
9
26.5
4
26.9
9
27.3
6
27.2
8
26.9
7
26.3
927.0
227.2
0
27.5
9
27.5
327.4
2
27.6
0
27.3
6
27.3
9
27.8
5
27.8
4
27.8
327.5
3
28.0
5
28.2
3
27
.4
27
.7
27
.9
27
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25.4
25
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23
.0
20
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18
.0
20
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19
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17
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17
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24.7
26.5
18.6
6
20.1
3
19.4
0
18.6
6
19.4
019.4
2
20
20
20
2 025
21.7
0
23.3
0
27
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18
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16
.95
WS
202
WS
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WS
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Co
pyrig
ht B
WB
Consulting Ltd
cA
3
Autho
rised
Revision
Draw
ing S
tatus
Draw
ing N
o:
Scale
Date
Draw
n
Draw
n
Draw
ing T
itle
Pro
ject Title
Client
Date
Rev
Descrip
tion
AM
EN
DM
EN
TS
Auth'd
NO
TES
3-4 Kayes W
alk Th
e Lace Market N
ottingham
0115 924 11000115 950 3966
bw
bco
nsulting.com
Tenvironmental
water
transportation
civilstructural
highw
aysinfrastructure
FW
NG
1 1PY
Figure 2: S
ite Layout andInvestigation Location P
lan
Phase 1A
, Harw
orth Colliery
Jones Hom
es (Northern) Ltd
FIGURE 3
LIKELY FOUNDATION SOLUTION ZONES
MH
R
27
26
26
26
26
25
25
26
27
28
28
29
29
29
29
30
29
29
29
29
27
27
26
26
26
27.1
3
27.0
2
27.4
6
27.4
8
27.8
0
28.0
3
28.2
4
29.2
027.9
227.3
327.0
226.3
1
25.0
9
24.3
1
23.5
3
21.3
1
19.7
3
19.0
6
18.3
2
18.2
218.0
317.9
1
17.9
318.3
6
18.2
9
18.1
9
18.5
9
18.4
118.7
019.4
2
21
21
21
21
21
21
21
21
20
20
20
2020
20
19
18 19
19
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20.1
3
20.2
4
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322.3
5
22.4
5
20.4
6
20.3
4
20.3
3
20.8
220.7
823.3
2
24.0
9
21.8
9
21.6
3
21.5
4
22.4
0
22.7
8
23.0
5
24.7
724.7
0
23.6
8
23.6
8
23.3
3
24.5
225.0
2
25.2
0
25.2
0
26.1
4
25.8
0
25.3
6
25.6
9
26.5
4
26.9
9
27.3
6
27.2
8
26.9
7
26.3
927.0
227.2
0
27.5
9
27.5
327.4
2
27.6
0
27.3
6
27.3
9
27.8
5
27.8
4
27.8
327.5
3
28.0
5
28.2
3
27
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27
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27
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27
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25.4
25
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23
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26.5
18.6
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18.6
6
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20
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.95
WS
202
WS
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Co
pyrig
ht B
WB
Consulting Ltd
cA
3
Autho
rised
Revision
Draw
ing S
tatus
Draw
ing N
o:
Scale
Date
Draw
n
Draw
n
Draw
ing T
itle
Pro
ject Title
Client
Date
Rev
Descrip
tion
AM
EN
DM
EN
TS
Auth'd
NO
TES
3-4 Kayes W
alk Th
e Lace Market N
ottingham
0115 924 11000115 950 3966
bw
bco
nsulting.com
Tenvironmental
water
transportation
civilstructural
highw
aysinfrastructure
FW
NG
1 1PY
Figure 3: P
roposed FoundationTyp
e Zones
Phase 1A
, Harw
orth Colliery
Jones Hom
es (Northern) Ltd
APPENDICES
APPENDIX 1
CLEA STATISTICAL ASSESSMENT – COLLIERY SPOIL
STATISTICAL APPROACH FOR ASSESSING RISK TO HUMAN HEALTH FROM CONTAMINATED LAND 2008
CIEH/CLAIRE Guidance on Comparing Soil Contamination Data with a Critical Concentration May 2008
STAGE 2 DATA SCREENING
STAGE 3 ZONING AND
OUTLIER CHECK
STAGE 4UPPER CONFIDENCE
LIMIT
Compare all data against GSACDo any values exceed GSAC?
With outliers removed are data normally DistributedHistogram
Shapiro Wilkes test, q-q plot
With outliers removed do any values exceed GSAC ?
True mean is less thancritical concentrationNo action required
Normal Distributed dataUCL from
Students t-test
Non-normal Distributed dataUCL from
Chebychev theorem
Yes
Yes
yes
No
No
Compare UCL to GSACDoes UCL exceed GSAC?
Yes
No
true mean is greater thancritical concentration
Further action required
True mean is less thancritical concentrationNo action required
True mean is less thancritical concentrationNo action required
STAGE 1QA CHECK
Are data of acceptable qualityLab sampling errors / eroneous resultsAre data sufficient to characterise area
of interestNo
Review CSM, update sampling and
analytical strategy
Non detects to DL or DL/2Remove outliers
Normal Non-normal
OutliersAssess Outliers directly against
GSAC
Plot data on bubble chartPlot histogram
Identify and deal with non detects
Harworth Phase 1A Development NTE2034
Key Receptor (Residential / Commercial)
Public Open Space (Playing Field)
Exposure Pathway Selection(Residential/Commercial scenarios only) Residential CommercialSoil Ingestion, dermal contact, particulate inhalation
TRUE TRUE TRUEIngestion of site grown vegetables and soil attached to vegetables FALSE Optional FALSEInhalation of vapours Indoors TRUE TRUE TRUEInhalation of vapours Outdoors TRUE TRUE TRUE
pH (Only required for vegetable uptake pathway) 7V3.04, October 2009
Colliery Spoil
Default pathways
Human Health Generic QRA Worksheet
Generic Assessment Criteria
Harworth Phase 1A Development Public Open NTE2034 mg/kg SourceArsenic 1.25E+02 BWBBarium 6.66E+04 BWBBeryllium 3.77E+02 BWBBoron 5.33E+04 BWBCadmium 1.11E+02 BWBChromium VI 5.78E+02 BWBCopper 5.33E+04 BWBLead* 4.50E+02 SGVInorganic Mercury 1.28E+03 BWBNickel 3.76E+03 BWBSelenium 3.63E+03 BWBVanadium 1.58E+03 BWBZinc 2.49E+05 BWBCyanide (Free) 4.30E+01 SNIFFERCyanide (Complex) 2.13E+02 SNIFFERPhenols (Total) 8.89E+02 BWBEthyl benzene 5.18E+02 BWBm-Xylene 6.25E+02 BWBp-Xylene 5.76E+02 BWBo-Xylene 4.78E+02 BWBTPH (EC5-6) aliphatic 2.29E+02 BWBTPH (>EC6-8) aliphatic 5.95E+02 BWBTPH (>EC8-10) aliphatic 1.60E+02 BWBTPH (>EC10-12) aliphatic 8.53E+02 BWBTPH (>EC12-16) aliphatic 3.02E+03 BWBTPH (>EC16-21) aliphatic 1.27E+05 BWBTPH (>EC21-35) aliphatic 1.27E+05 BWBTPH (>EC35-44) aliphatic 1.27E+05 BWBTPH (>EC6-7) aromatic (benzene) 1.37E+01 BWBTPH (>EC7-8) aromatic (toluene) 8.69E+02 BWBTPH (>EC8-10) aromatic 2.49E+02 BWBTPH (>EC10-12) aromatic 1.06E+03 BWBTPH (>EC12-16) aromatic 2.45E+03 BWBTPH (>EC16-21) aromatic 2.57E+03 BWBTPH (>EC21-35) aromatic 2.77E+03 BWBTPH (>EC35-44) aromatic 2.77E+03 BWBNaphthalene 1.18E+02 BWBAcenaphthylene 5.94E+00 BWBAcenaphthene 1.76E+02 BWBFluorene 7.19E+03 BWBPhenanthrene 4.63E+02 BWBAnthracene 5.50E+04 BWBFluoranthene 8.40E+01 BWBPyrene 8.05E+02 BWBBenzo(a)anthracene 1.51E+01 BWBChrysene 1.42E+02 BWBBenzo(b)fluoranthene 1.72E+01 BWBBenzo(k)fluoranthene 1.87E+01 BWBBenzo(a)pyrene 1.81E+00 BWBIndeno(1,2,3-c,d)pyrene 1.65E+01 BWBDibenzo(a,h)anthracene 1.99E+00 BWBBenzo(g,hi)perylene 5.57E+03 BWBTetrachloroethene (PCE) 1.14E+02 BWBTrichloroethene (TCE) 8.49E+00 BWBcis -1,2-Dichloroethene 0.00E+00 EICVinyl Chloride (VC) 4.06E-02 BWB1,1,2,2-Tetrachloroethane (PCA) 1.75E+02 BWB1,1,1-Trichloroethane (TCA) 5.05E+02 BWB1,2-Dichloroethane 4.82E-01 BWBCarbon Tetrachloride 1.65E+00 BWB
Lo
cati
on
Sam
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dep
th
East
ing
No
rth
ing
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rface
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Ars
en
ic
Bari
um
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ron
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Ch
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ium
VI
Co
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Lead
Detection Limit 0.6 0.6 0.01 1 0.02 0.9 0.6 1.4 0.7GSAC 1.25E+02 6.66E+04 3.77E+02 5.33E+04 1.11E+02 0.00E+00 5.78E+02 5.33E+04 4.50E+02SAMPLE 514 (BUND) - 66.5 109 0.803 1 0.0855 39.3 43.7 23.4TP501 1.50- 99.8 81.4 0.702 1 0.264 8.57 76.5 37.1TP502 0.00-2.00 23.6 103 0.903 1 0.137 10 46.3 24.9TP503 0.00-1.00 35.2 181 0.799 1 0.255 19.9 34.9 24.5TP504 0.00-1.80 32.1 219 0.939 1 0.297 14.9 57.7 40.5TP505 (BUND) - 38.9 161 0.909 1 0.231 11.2 57.8 33.3TP506 0.00-3.00 37.9 221 1.27 1 0.244 11.5 61.6 44TP507 0.40-2.00 18.2 245 0.699 1 1.25 16 35.9 48.7TP508 1.50- 48.1 154 0.505 1 0.136 8.22 39.7 28.4TP509 (STOCKPILE) - 44.1 168 0.457 1 0.276 7.39 48.8 28TP510 0.30-3.00 68.5 89.5 0.25 1 0.136 9.4 29.7 22.2TP511 0.20-2.30 57.9 173 0.401 1 0.146 34.6 32.8 22.1TP512 0.30-1.30 32.7 117 0.313 1 0.151 18.9 23.3 26.5TP513 0.60-2.50 20.2 147 1.41 1 0.291 9.37 45.8 35.3TP11 2.00- 24.7 349 0.293 1 0.394 18.5 643 51.2WS107 1.00- 97.8 157 0.01 1 0.163 13.4 32.8 33.9
Lo
cati
on
Sam
ple
dep
th
Detection LimitGSACSAMPLE 514 (BUND) -TP501 1.50-TP502 0.00-2.00TP503 0.00-1.00TP504 0.00-1.80TP505 (BUND) -TP506 0.00-3.00TP507 0.40-2.00TP508 1.50-TP509 (STOCKPILE) -TP510 0.30-3.00TP511 0.20-2.30TP512 0.30-1.30TP513 0.60-2.50TP11 2.00-WS107 1.00-
Ino
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0.14 0.2 1 0.2 1.9 1 1 0.035 0.003 0.006 0.006 0.003 0.01 0.01 0.011.28E+03 3.76E+03 3.63E+03 1.58E+03 2.49E+05 4.30E+01 2.13E+02 8.89E+02 5.18E+02 6.25E+02 5.76E+02 4.78E+02 2.29E+02 5.95E+02 1.60E+02
0.14 27.9 1 32.5 31.3 1 1 0.181 0.003 0.006 0.006 0.003 0.01 0.0373 0.01360.778 26.2 3.24 11.4 40.4 1 1 0.035 0.003 0.00784 0.00784 0.00448 0.056 0.179 0.04140.142 23.4 1 11.5 61.8 1 1 0.035 0.003 0.006 0.006 0.003 0.0155 0.0588 0.01780.14 38.3 1 18.3 56.9 1 1 0.035 0.003 0.006 0.006 0.003 0.0109 0.0415 0.0131
0.266 26.7 1 17.8 76 1 1 0.035 0.00351 0.00702 0.00702 0.00468 0.0199 0.0655 0.03040.24 25.5 1.76 15.9 43.8 1 1 0.035 0.003 0.006 0.006 0.00339 0.017 0.052 0.035
0.317 29.3 1.71 19.9 56.8 1 1 0.035 0.003 0.006 0.006 0.003 0.0148 0.049 0.01940.244 17.1 1 17.4 128 1 1 0.035 0.003 0.006 0.006 0.003 0.01 0.0376 0.01480.14 11.3 1.18 11.5 30.6 1 1 0.157 0.003 0.006 0.006 0.003 0.0101 0.0426 0.01
0.156 13.9 1.66 10.4 29.3 1 3.07 0.035 0.003 0.006 0.006 0.003 0.0121 0.0375 0.01450.14 11.3 1 9.88 21.4 1 1 0.035 0.003 0.006 0.006 0.003 0.01 0.0348 0.01510.14 18.2 1 26 37.3 1 1 0.035 0.003 0.006 0.006 0.003 0.0124 0.0509 0.01920.14 10.6 1.54 19.9 28.4 1 1 0.035 0.003 0.00678 0.00678 0.003 0.0158 0.0644 0.01920.14 32.3 1.28 12.7 57.5 1 1 0.035 0.00452 0.0192 0.0192 0.00791 0.0633 0.179 0.05990.14 35.8 1 19.6 780 1 1 0.1 0.00578 0.0196 0.0196 0.00924 0.0497 0.126 0.0589
0.144 15.1 2 16.9 32.8 1 1 0.1 0.003 0.006 0.006 0.003 0.012 0.0405 0.0197
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dep
th
Detection LimitGSACSAMPLE 514 (BUND) -TP501 1.50-TP502 0.00-2.00TP503 0.00-1.00TP504 0.00-1.80TP505 (BUND) -TP506 0.00-3.00TP507 0.40-2.00TP508 1.50-TP509 (STOCKPILE) -TP510 0.30-3.00TP511 0.20-2.30TP512 0.30-1.30TP513 0.60-2.50TP11 2.00-WS107 1.00-
TP
H (
>E
C1
0-1
2)
ali
ph
ati
c
TP
H (
>E
C1
2-1
6)
ali
ph
ati
c
TP
H (
>E
C1
6-2
1)
ali
ph
ati
c
TP
H (
>E
C2
1-3
5)
ali
ph
ati
c
TP
H (
>E
C3
5-4
4)
ali
ph
ati
c
TP
H (
>E
C6
-7)
aro
mati
c (b
en
zen
e)
TP
H (
>E
C7
-8)
aro
mati
c (t
olu
en
e)
TP
H (
>E
C8
-10
) aro
mati
c
TP
H (
>E
C1
0-1
2)
aro
mati
c
TP
H (
>E
C1
2-1
6)
aro
mati
c
TP
H (
>E
C1
6-2
1)
aro
mati
c
TP
H (
>E
C2
1-3
5)
aro
mati
c
TP
H (
>E
C3
5-4
4)
aro
mati
c
Nap
hth
ale
ne
0.01 0.1 0.1 0.1 0.1 0.01 0.01 0.01 0.01 0.1 0.1 0.1 0.1 0.0098.53E+02 3.02E+03 1.27E+05 1.27E+05 1.27E+05 1.37E+01 8.69E+02 2.49E+02 1.06E+03 2.45E+03 2.57E+03 2.77E+03 2.77E+03 1.18E+02
0.0102 4.61 4.73 11.3 0.1 0.01 0.01 0.0124 0.01 6.2 9.54 15.7 6.41 2.50.0224 11.9 12.5 24.1 2.31 0.01 0.0101 0.0426 0.0146 32 33.2 59.6 15 5.640.0133 9.81 11.9 21.5 2.52 0.01 0.01 0.0178 0.01 23.4 22.7 39 7.11 3.92
0.01 10.6 13 23.2 1.79 0.01 0.01 0.0186 0.01 16.8 17.3 33.4 6.14 2.140.0222 10 14.8 46.6 15.6 0.0105 0.01 0.0363 0.0152 17.9 26.7 60.4 22.8 2.60.0452 24.9 43.8 125 51.1 0.01 0.01 0.0328 0.0305 34.6 51.6 101 39.3 12.50.0171 15.9 19.2 30.5 2.92 0.01 0.01 0.0194 0.0114 38.8 50.9 94.8 22 8.760.0125 12.4 18.2 89.7 26.5 0.01 0.01 0.0125 0.01 27.3 36.9 120 46.7 7.07
0.01 17.1 17.2 19.8 0.1 0.01 0.01 0.0123 0.01 34.3 34.6 58.1 7.17 2.210.0121 21.2 33 82.8 39.1 0.01 0.01 0.0157 0.01 26.8 46.2 127 70.1 5.2
0.01 8.21 6.58 9.03 0.1 0.01 0.01 0.0128 0.01 10.8 14.6 19.5 1.85 2.90.0158 7.1 7.29 13.1 0.1 0.01 0.01 0.0203 0.0102 9.91 12.3 22.2 3.37 2.640.0124 9.95 8.76 15.3 0.1 0.01 0.0113 0.0237 0.01 34.9 194 2150 322 2.650.0362 19 17.6 21.5 0.1 0.0158 0.0226 0.0712 0.0249 35.6 35.1 59.6 15.5 4.280.0809 15.7 10.1 21.6 2.35 0.0173 0.0231 0.0739 0.0543 28.8 22.9 50.9 16.1 0.8630.0142 25.5 9.42 19.4 1.47 0.01 0.01 0.0208 0.01 42.5 24.6 46.2 18.4 1.85
Lo
cati
on
Sam
ple
dep
th
Detection LimitGSACSAMPLE 514 (BUND) -TP501 1.50-TP502 0.00-2.00TP503 0.00-1.00TP504 0.00-1.80TP505 (BUND) -TP506 0.00-3.00TP507 0.40-2.00TP508 1.50-TP509 (STOCKPILE) -TP510 0.30-3.00TP511 0.20-2.30TP512 0.30-1.30TP513 0.60-2.50TP11 2.00-WS107 1.00-
Ace
nap
hth
yle
ne
Ace
nap
hth
en
e
Flu
ore
ne
Ph
en
an
thre
ne
An
thra
cen
e
Flu
ora
nth
en
e
Pyre
ne
Ben
zo(a
)an
thra
cen
e
Ch
ryse
ne
Ben
zo(b
)flu
ora
nth
en
e
Ben
zo(k
)flu
ora
nth
en
e
Ben
zo(a
)pyre
ne
Ind
en
o(1
,2,3
-c,d
)pyre
ne
Dib
en
zo(a
,h)a
nth
race
ne
Ben
zo(g
,hi)
pery
len
e
0.012 0.008 0.01 0.015 0.016 0.017 0.015 0.014 0.01 0.015 0.014 0.015 0.018 0.023 0.0245.94E+00 1.76E+02 7.19E+03 4.63E+02 5.50E+04 8.40E+01 8.05E+02 1.51E+01 1.42E+02 1.72E+01 1.87E+01 1.81E+00 1.65E+01 1.99E+00 5.57E+03
0.012 0.00976 0.0325 0.81 0.0354 0.1 0.0965 0.0732 0.0806 0.0687 0.0162 0.0419 0.018 0.023 0.1110.012 0.0699 0.134 1.92 0.217 0.456 0.465 0.321 0.292 0.327 0.0718 0.193 0.101 0.0573 0.328
0.0135 0.0266 0.0648 1.35 0.137 0.288 0.304 0.194 0.187 0.215 0.0577 0.124 0.0603 0.0344 0.2770.012 0.0148 0.0385 0.679 0.0458 0.119 0.126 0.116 0.104 0.109 0.0312 0.0738 0.0319 0.023 0.08360.012 0.0484 0.0831 0.884 0.0806 0.297 0.281 0.177 0.169 0.183 0.066 0.125 0.0921 0.0688 0.2
0.0897 0.554 0.669 4.9 1.06 3.04 3.32 1.45 1.03 1.79 0.563 1.35 0.588 0.209 1.040.0314 0.173 0.21 4.31 0.507 2.24 1.86 1.2 0.994 1.37 0.422 0.833 0.384 0.159 0.7470.0346 0.0701 0.117 2.58 0.295 1.01 0.941 0.569 0.556 0.685 0.209 0.451 0.231 0.0986 0.5350.012 0.0176 0.0269 0.857 0.0568 0.39 0.366 0.213 0.238 0.274 0.1 0.179 0.107 0.041 0.181
0.0152 0.045 0.0481 2.8 0.115 0.724 0.594 0.337 0.438 0.496 0.0943 0.169 0.119 0.0686 0.3690.012 0.008 0.0203 1.18 0.034 0.139 0.131 0.102 0.142 0.111 0.0208 0.0402 0.0246 0.023 0.1110.012 0.0111 0.0304 0.927 0.0386 0.141 0.142 0.125 0.13 0.109 0.0218 0.0568 0.0311 0.023 0.1070.012 0.0233 0.0348 0.951 0.0546 0.23 0.208 0.13 0.149 0.147 0.033 0.0799 0.0441 0.023 0.0894
0.0561 0.0463 0.134 2.19 0.182 0.835 0.704 0.386 0.351 0.409 0.13 0.274 0.117 0.0506 0.2660.012 0.0104 0.0237 0.286 0.0284 0.12 0.102 0.0712 0.0625 0.0658 0.0241 0.0386 0.0278 0.023 0.0530.012 0.008 0.0366 0.531 0.0252 0.0682 0.0726 0.0642 0.0596 0.0449 0.014 0.0248 0.018 0.023 0.0549
Date Version Author Checked Authorisation Notes
17/09/2008 1 TJH Initial beta issue
23/10/2008 2 TJH Lognormal outlier test added, bug fixes
06/02/2009 3 TJH Revised CLEA 2008 GSACs
15/04/2009 3.01 TJH Revised 2009 TOX reports for Hg, Se, BTEX, Soil saturation limit added
04/06/2009 3.02 TJH Revised 2009 TOX reports for As, Ni, Outlier test updated, format changes to report sheet
22/07/2009 3.03 TJH Revised 2009 TOX reports for Phenol and Cadmium
19/10/2009 3.04 TJH Non standard landuses added for schools and playing fields
20/03/2012 3.05 TJH Cr VI and Cr III added
APPENDIX 2
CLEA STATISTICAL ASSESSMENT – ASH/CLINKER FILL
STATISTICAL APPROACH FOR ASSESSING RISK TO HUMAN HEALTH FROM CONTAMINATED LAND 2008
CIEH/CLAIRE Guidance on Comparing Soil Contamination Data with a Critical Concentration May 2008
STAGE 2 DATA SCREENING
STAGE 3 ZONING AND
OUTLIER CHECK
STAGE 4UPPER CONFIDENCE
LIMIT
Compare all data against GSACDo any values exceed GSAC?
With outliers removed are data normally DistributedHistogram
Shapiro Wilkes test, q-q plot
With outliers removed do any values exceed GSAC ?
True mean is less thancritical concentrationNo action required
Normal Distributed dataUCL from
Students t-test
Non-normal Distributed dataUCL from
Chebychev theorem
Yes
Yes
yes
No
No
Compare UCL to GSACDoes UCL exceed GSAC?
Yes
No
true mean is greater thancritical concentration
Further action required
True mean is less thancritical concentrationNo action required
True mean is less thancritical concentrationNo action required
STAGE 1QA CHECK
Are data of acceptable qualityLab sampling errors / eroneous resultsAre data sufficient to characterise area
of interestNo
Review CSM, update sampling and
analytical strategy
Non detects to DL or DL/2Remove outliers
Normal Non-normal
OutliersAssess Outliers directly against
GSAC
Plot data on bubble chartPlot histogram
Identify and deal with non detects
Harworth Phase 1A Development NTE2034
Key Receptor (Residential / Commercial) Residential
Exposure Pathway Selection(Residential/Commercial scenarios only) Residential CommercialSoil Ingestion, dermal contact, particulate inhalation
FALSE TRUE TRUEIngestion of site grown vegetables and soil attached to vegetables TRUE Optional FALSEInhalation of vapours Indoors FALSE TRUE TRUEInhalation of vapours Outdoors TRUE TRUE TRUE
pH (Only required for vegetable uptake pathway) 7V3.04, October 2009
Ash/Clinker Fill
Default pathways
Human Health Generic QRA Worksheet
Generic Assessment Criteria
Harworth Phase 1A Development ResidentialNTE2034 mg/kg SourceArsenic Not of concern BWBBarium Not of concern BWBBeryllium Not of concern BWBBoron Not of concern BWBCadmium Not of concern BWBChromium VI Not of concern BWBCopper Not of concern BWBLead* Not of concern SGVInorganic Mercury Not of concern BWBNickel Not of concern BWBSelenium Not of concern BWBVanadium Not of concern BWBZinc Not of concern BWBCyanide (Free) Not of concern SNIFFERCyanide (Complex) Not of concern SNIFFERPhenols (Total) 4.53E+02 BWBEthyl benzene 1.07E+02 BWBm-Xylene 2.05E+02 BWBp-Xylene 1.93E+02 BWBo-Xylene 1.87E+02 BWBTPH (EC5-6) aliphatic 9.65E+03 BWBTPH (>EC6-8) aliphatic 3.28E+04 BWBTPH (>EC8-10) aliphatic 2.28E+03 BWBTPH (>EC10-12) aliphatic 1.72E+04 BWBTPH (>EC12-16) aliphatic 2.06E+05 BWBTPH (>EC16-21) aliphatic 1.01E+07 BWBTPH (>EC21-35) aliphatic 1.01E+07 BWBTPH (>EC35-44) aliphatic 1.01E+07 BWBTPH (>EC6-7) aromatic (benzene) 1.13E-01 BWBTPH (>EC7-8) aromatic (toluene) 1.48E+02 BWBTPH (>EC8-10) aromatic 7.44E+01 BWBTPH (>EC10-12) aromatic 9.70E+01 BWBTPH (>EC12-16) aromatic 1.67E+02 BWBTPH (>EC16-21) aromatic 3.45E+02 BWBTPH (>EC21-35) aromatic 2.66E+03 BWBTPH (>EC35-44) aromatic 2.66E+03 BWBNaphthalene 2.72E+01 BWBAcenaphthylene 8.07E+00 BWBAcenaphthene 2.31E+02 BWBFluorene 8.53E+02 BWBPhenanthrene 6.58E+02 BWBAnthracene 1.30E+04 BWBFluoranthene 5.55E+01 BWBPyrene 4.92E+02 BWBBenzo(a)anthracene 2.67E+01 BWBChrysene 1.84E+02 BWBBenzo(b)fluoranthene 3.74E+01 BWBBenzo(k)fluoranthene 5.39E+01 BWBBenzo(a)pyrene 4.64E+00 BWBIndeno(1,2,3-c,d)pyrene 3.08E+01 BWBDibenzo(a,h)anthracene 6.96E+00 BWBBenzo(g,hi)perylene 2.41E+04 BWBTetrachloroethene (PCE) 1.07E+01 BWBTrichloroethene (TCE) 2.85E+00 BWBcis -1,2-Dichloroethene 1.75E+00 EICVinyl Chloride (VC) 3.70E-03 BWB1,1,2,2-Tetrachloroethane (PCA) 2.72E+00 BWB1,1,1-Trichloroethane (TCA) 3.22E+02 BWB1,2-Dichloroethane 3.07E-02 BWBCarbon Tetrachloride 3.74E+01 BWB
Locati
on
Sam
ple
dep
th
Easti
ng
Nort
hin
g
Su
rface L
evel
Ars
en
ic
Bari
um
Bery
lliu
m
Boro
n
Cad
miu
m
Ch
rom
ium
III
Ch
rom
ium
VI
Cop
per
Lead
Detection Limit 0.6 0.6 0.01 1 0.02 0.9 0.6 1.4 0.7GSAC Not of concernNot of concernNot of concernNot of concernNot of concernNot of concernNot of concernNot of concernNot of concernBH1 3.00-4.00 102 196 2.02 5.72 1.02 21.1 121 97BH2 1.00-2.00 56.5 399 3.67 4.42 0.856 26.4 323 204BH3 1.00-2.00 34.6 346 3.23 7.33 2.12 22.8 125 113WS101 0.10-0.20 16.2 171 0.772 1.41 0.524 14.1 52.7 68.2WS106 0.50-1.00 102 140 2 5.3 1.62 52.5 1080 1120WS107 1.00- 97.8 157 0.01 1 0.163 13.4 32.8 33.9
Locati
on
Sam
ple
dep
th
Detection LimitGSACBH1 3.00-4.00BH2 1.00-2.00BH3 1.00-2.00WS101 0.10-0.20WS106 0.50-1.00WS107 1.00-
Inorg
an
ic M
erc
ury
Nic
kel
Sele
niu
m
Van
ad
ium
Zin
c
Cyan
ide (
Fre
e)
Cyan
ide (
Com
ple
x)
Ph
en
ols
(Tota
l)
Eth
yl
ben
zen
e
m-X
yle
ne
p-x
yle
ne
o-x
yle
ne
TP
H (
EC
5-6
) ali
ph
ati
c
TP
H (
>EC
6-8
) ali
ph
ati
c
TP
H (
>EC
8-1
0)
ali
ph
ati
c
0.14 0.2 1 0.2 1.9 1 1 0.035 0.003 0.006 0.006 0.003 0.01 0.01 0.01Not of concernNot of concernNot of concernNot of concernNot of concernNot of concernNot of concern4.53E+02 1.07E+02 2.05E+02 1.93E+02 1.87E+02 9.65E+03 3.28E+04 2.28E+03
0.14 49.3 10 46.9 86.2 1 1 0.1 0.00476 0.0107 0.0107 0.00476 0.0345 0.0988 0.03450.14 43 1 60.3 318 1 1 0.1 0.00633 0.0253 0.0253 0.0114 0.0949 0.231 0.05440.14 43.9 1 58.4 2520 1 1 0.1 0.00389 0.0155 0.0155 0.00648 0.0453 0.111 0.03370.14 19.1 1 27.4 154 1 1 0.1 0.003 0.006 0.006 0.003 0.01 0.0125 0.010.14 78.2 5 90.3 640 1 1 0.1 0.003 0.006 0.006 0.003 0.01 0.01 0.01
0.144 15.1 2 16.9 32.8 1 1 0.1 0.003 0.006 0.006 0.003 0.012 0.0405 0.0197
Locati
on
Sam
ple
dep
th
Detection LimitGSACBH1 3.00-4.00BH2 1.00-2.00BH3 1.00-2.00WS101 0.10-0.20WS106 0.50-1.00WS107 1.00-
TP
H (
>EC
10
-12
) ali
ph
ati
c
TP
H (
>EC
12
-16
) ali
ph
ati
c
TP
H (
>EC
16
-21
) ali
ph
ati
c
TP
H (
>EC
21
-35
) ali
ph
ati
c
TP
H (
>EC
35
-44
) ali
ph
ati
c
TP
H (
>EC
6-7
) aro
mati
c (
ben
zen
e)
TP
H (
>EC
7-8
) aro
mati
c (
tolu
en
e)
TP
H (
>EC
8-1
0)
aro
mati
c
TP
H (
>EC
10
-12
) aro
mati
c
TP
H (
>EC
12
-16
) aro
mati
c
TP
H (
>EC
16
-21
) aro
mati
c
TP
H (
>EC
21
-35
) aro
mati
c
TP
H (
>EC
35
-44
) aro
mati
c
Nap
hth
ale
ne
0.01 0.1 0.1 0.1 0.1 0.01 0.01 0.01 0.01 0.1 0.1 0.1 0.1 0.0091.72E+04 2.06E+05 1.01E+07 1.01E+07 1.01E+07 1.13E-01 1.48E+02 7.44E+01 9.70E+01 1.67E+02 3.45E+02 2.66E+03 2.66E+03 2.72E+01
0.0226 28.3 16.8 38.6 4.37 0.01 0.0274 0.0428 0.0155 43.6 33.1 57.7 15.3 6.350.0278 15.9 14.2 45.1 5.33 0.0215 0.0746 0.0797 0.019 24.2 27 74.1 23.9 2.530.0168 24.6 19.2 33 3.68 0.01 0.035 0.0479 0.0117 55.7 47.3 100 27.3 2.91
0.01 10.9 7.93 16.1 1.66 0.01 0.01 0.0114 0.01 16.4 13.9 34.2 7.81 0.4690.01 4.63 0.699 2.22 0.162 0.01 0.01 0.01 0.01 1.03 3.64 0.643 1.04 0.191
0.0142 25.5 9.42 19.4 1.47 0.01 0.01 0.0208 0.01 42.5 24.6 46.2 18.4 1.85
Locati
on
Sam
ple
dep
th
Detection LimitGSACBH1 3.00-4.00BH2 1.00-2.00BH3 1.00-2.00WS101 0.10-0.20WS106 0.50-1.00WS107 1.00-
Acen
ap
hth
yle
ne
Acen
ap
hth
en
e
Flu
ore
ne
Ph
en
an
thre
ne
An
thra
cen
e
Flu
ora
nth
en
e
Pyre
ne
Ben
zo(a
)an
thra
cen
e
Ch
rysen
e
Ben
zo(b
)flu
ora
nth
en
e
Ben
zo(k
)flu
ora
nth
en
e
Ben
zo(a
)pyre
ne
Ind
en
o(1
,2,3
-c,d
)pyre
ne
Dib
en
zo(a
,h)a
nth
racen
e
Ben
zo(g
,hi)
pery
len
e
0.012 0.008 0.01 0.015 0.016 0.017 0.015 0.014 0.01 0.015 0.014 0.015 0.018 0.023 0.0248.07E+00 2.31E+02 8.53E+02 6.58E+02 1.30E+04 5.55E+01 4.92E+02 2.67E+01 1.84E+02 3.74E+01 5.39E+01 4.64E+00 3.08E+01 6.96E+00 2.41E+04
0.124 0.0247 0.0359 1.85 0.122 0.568 0.516 0.366 0.363 0.403 0.133 0.214 0.114 0.0534 0.2750.0372 0.0266 0.0339 1.29 0.209 1.51 1.19 0.843 0.629 1.11 0.347 0.657 0.313 0.105 0.4940.0591 0.0317 0.0438 1.3 0.208 1.18 0.922 0.611 0.445 0.672 0.23 0.437 0.2 0.0719 0.3450.0174 0.0149 0.0135 0.347 0.0519 0.486 0.41 0.217 0.212 0.266 0.117 0.186 0.116 0.0374 0.1750.012 0.008 0.01 0.0472 0.016 0.017 0.015 0.014 0.01 0.015 0.014 0.015 0.018 0.023 0.0240.012 0.008 0.0366 0.531 0.0252 0.0682 0.0726 0.0642 0.0596 0.0449 0.014 0.0248 0.018 0.023 0.0549
Residential Pathway Specific Assessment Sub Criteria derived March 2009
Vapour Inhalation (Indoors)
Vapour Inhalation (Outdoors)
Soil Ingestion
Ingestion of Contaminated
Vegetables and soil attached to vegetables
Dermal contact
Particulate Dust
Inhalation
Residential GSAC
(mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) mg/kgArsenic NR NR 4.04E+01 4.29E+02 2.62E+02 8.50E+01 Not of concernBarium NR NR 1.35E+04 1.48E+03 NR 4.25E+06 Not of concernBeryllium NR NR 1.56E+02 1.03E+03 NR 2.89E+01 Not of concernBoron NR NR 1.08E+04 1.50E+02 NR 3.40E+06 Not of concernCadmium NR NR 1.20E+02 1.22E+01 1.64E+04 1.82E+02 Not of concernChromium III NR NR 1.44E+04 1.91E+04 NR 4.53E+06 Not of concernChromium VI NR NR 3.06E+02 4.05E+02 NR 4.25E+01 Not of concernCopper NR NR 1.08E+04 5.13E+03 NR 3.40E+06 Not of concernLead Not of concernInorganic Mercury NR NR 2.62E+02 5.81E+02 NR 2.55E+03 Not of concernNickel NR NR 8.09E+02 1.64E+03 3.15E+04 1.27E+02 Not of concernSelenium NR NR 5.97E+02 8.51E+02 NR 1.88E+05 Not of concernVanadium NR NR 2.30E+02 1.82E+02 NR 8.29E+03 Not of concernZinc NR NR 4.37E+04 5.82E+03 NR 1.38E+07 Not of concernCyanide (free) Not of concernCyanide (Complex) Not of concernPhenol 5.89E+02 5.52E+05 9.17E+04 4.53E+02 6.63E+02 3.22E+05 4.53E+02Ethylbenzene 1.70E+02 1.79E+06 1.34E+04 1.07E+02 2.62E+04 9.01E+06 1.07E+02m-xylene 5.56E+01 5.04E+05 2.42E+04 2.05E+02 4.71E+04 2.19E+06 2.05E+02p-xylene 5.34E+01 4.94E+05 2.42E+04 1.93E+02 4.71E+04 2.19E+06 1.93E+02o-xylene 5.98E+01 5.23E+05 2.42E+04 1.87E+02 4.71E+04 2.19E+06 1.87E+02TPH (EC5-6) aliphatic 2.97E+00 2.53E+06 6.74E+05 9.69E+03 1.01E+06 1.12E+08 9.65E+03TPH (>EC6-8) aliphatic 7.75E+00 4.08E+06 6.74E+05 3.30E+04 1.01E+06 1.12E+08 3.28E+04TPH (>EC8-10) aliphatic 2.14E+00 4.99E+05 6.74E+03 2.29E+03 1.01E+04 6.08E+06 2.28E+03TPH (>EC10-12) aliphatic 1.27E+01 1.22E+06 6.74E+03 1.75E+04 1.01E+04 6.08E+06 1.72E+04TPH (>EC12-16) aliphatic 6.38E+01 2.73E+06 6.74E+03 2.23E+05 1.01E+04 6.08E+06 2.06E+05TPH (>EC16-21) aliphatic 7.35E+03 7.74E+07 1.35E+05 1.16E+07 2.02E+05 4.25E+07 1.01E+07TPH (>EC21-35) aliphatic 7.35E+03 7.74E+07 1.35E+05 1.16E+07 2.02E+05 4.25E+07 1.01E+07TPH (>EC35-44) aliphatic 7.35E+03 7.74E+07 1.35E+05 1.16E+07 2.02E+05 4.25E+07 1.01E+07TPH (>EC6-7) aromatic (benzene)2.69E-01 5.63E+03 3.91E+01 1.13E-01 7.61E+01 5.95E+04 1.13E-01TPH (>EC7-8) aromatic (toluene)6.26E+02 8.62E+06 3.00E+04 1.48E+02 5.84E+04 5.81E+07 1.48E+02TPH (>EC8-10) aromatic 3.64E+00 2.91E+05 2.70E+03 7.45E+01 4.04E+03 1.21E+06 7.44E+01TPH (>EC10-12) aromatic 2.18E+01 7.11E+05 2.70E+03 9.71E+01 4.04E+03 1.21E+06 9.70E+01TPH (>EC12-16) aromatic 1.23E+02 1.68E+06 2.70E+03 1.67E+02 4.04E+03 1.21E+06 1.67E+02TPH (>EC16-21) aromatic 9.47E+02 3.34E+06 2.02E+03 3.45E+02 3.03E+03 6.37E+05 3.45E+02TPH (>EC21-35) aromatic 1.21E+05 2.50E+07 2.02E+03 2.66E+03 3.03E+03 6.37E+05 2.66E+03TPH (>EC35-44) aromatic 1.21E+05 2.50E+07 2.02E+03 2.66E+03 3.03E+03 6.37E+05 2.66E+03Naphthalene 1.64E+00 3.17E+04 2.64E+03 2.72E+01 3.96E+03 2.93E+04 2.72E+01Acenaphthylene 1.36E-01 8.48E+02 2.70E+02 8.15E+00 4.04E+02 2.97E+02 8.07E+00Acenaphthene 5.27E+00 1.84E+04 2.70E+03 2.34E+02 4.04E+03 2.97E+03 2.31E+02Fluorene 8.67E+03 1.77E+07 5.39E+03 8.53E+02 8.07E+03 1.70E+06 8.53E+02Phenanthrene 3.44E+01 3.91E+04 2.70E+03 6.69E+02 4.04E+03 2.97E+03 6.58E+02Anthracene 3.41E+05 2.69E+08 4.04E+04 1.30E+04 6.06E+04 1.27E+07 1.30E+04Fluoranthene 1.59E+01 7.09E+03 2.70E+02 5.59E+01 4.04E+02 2.97E+02 5.55E+01Pyrene 1.52E+02 6.71E+04 2.70E+03 4.96E+02 4.04E+03 2.97E+03 4.92E+02Benzo(a)anthracene 1.12E+01 1.57E+03 2.70E+01 2.72E+01 4.04E+01 2.97E+01 2.67E+01Chrysene 5.91E+02 1.37E+04 2.70E+02 1.87E+02 4.04E+02 2.97E+02 1.84E+02Benzo(b)fluoranthene 1.72E+02 1.93E+03 2.70E+01 3.81E+01 4.04E+01 2.97E+01 3.74E+01Benzo(k)fluoranthene 2.83E+02 2.30E+03 2.70E+01 5.52E+01 4.04E+01 2.97E+01 5.39E+01Benzo(a)pyrene 2.44E+01 2.13E+02 2.70E+00 4.75E+00 4.04E+00 2.97E+00 4.64E+00Indeno(123-cd)pyrene 1.43E+02 1.79E+03 2.70E+01 3.13E+01 4.04E+01 2.97E+01 3.08E+01Dibenzo(ah)anthracene 1.22E+01 2.65E+02 2.70E+00 7.15E+00 4.04E+00 2.97E+00 6.96E+00Benzo(g,h,i)perylene 2.56E+07 1.66E+08 4.04E+03 2.41E+04 6.06E+03 1.27E+06 2.41E+04Tetrachloroethene (PCE) 1.35E+00 2.65E+05 1.82E+03 1.07E+01 3.55E+03 2.50E+06 1.07E+01Trichloroethene (TCE) 1.10E-01 2.22E+04 7.01E+02 2.85E+00 1.05E+03 2.21E+05 2.85E+00cis -1,2-Dichloroethene 1.20E-01 2.33E+04 7.30E+02 1.75E+00 1.42E+03 2.30E+05 1.75E+00Vinyl Chloride (VC) 5.43E-04 3.59E+02 1.89E+00 3.70E-03 3.67E+00 1.27E+04 3.70E-031,1,2,2-Tetrachloroethane (PCA)2.76E+00 1.17E+05 7.67E+02 2.72E+00 1.49E+03 2.41E+05 2.72E+001,1,1-Trichloroethane (TCA) 6.33E+00 1.79E+06 8.09E+04 3.22E+02 1.57E+05 2.46E+07 3.22E+021,2-Dichloroethane 6.46E-03 8.09E+02 1.62E+01 3.07E-02 3.15E+01 5.10E+03 3.07E-02Carbon Tetrachloride 1.81E-02 5.07E+03 1.90E+02 1.06E+00 3.70E+02 6.93E+04 1.06E+00
Generic Site Assessment Criteria
Residential End Use
Pathway Specific Criteria
V2.11
APPENDIX 3
BWB GSAC DERIVATION
BWB HUMAN HEALTH GENERIC QUANTITATIVE RISK ASSESSMENT (GQRA) Human Health Generic Screening Criteria The Environment Agency published the revised CLEA framework for assessing the risk to human health from soil contamination in January 2009. The framework comprises a technical background document (EA, 2009a), toxicological assessment EA 2009b and CLEA spreadsheet model (EA 2009c). The new framework supersedes the 2002 CLEA model and subsequent briefing notes. The 2002 CLEA software and CLEA 2005 have also been withdrawn. All previously published Soil Guideline Values (SGV) have been withdrawn. The EA plan to issue revised SGVs for selected substances early in 2009. Conceptual Site Model The standard exposure pathways and Conceptual Models for human exposure to contaminants for different site uses are set out in the updated technical background to the CLEA model (Environment Agency 2009a). Descriptive Conceptual Models (From Environment Agency 2009a) Residential This generic scenario assumes a typical residential property consisting of a two-storey house built on a ground bearing slab with a private garden consisting of lawn, flower beds and a small fruit and vegetable patch. The occupants are assumed to be parenets with young children, who make regular use of the garden area. The key assumptions for BWB GSACs are Critical receptor is a young female child (aged zero to six years old) Exposure duration is six years Exposure pathways include direct soil and indoor dust ingestion, consumption of homegrown produce, consumption of soil attached to home grown produce, skin contact with soils and indoor dusts, and inhalation of indoor and outdoor dust and vapours. Soil type is a Sandy Loam with 1% organic matter Building type is a two storey small terraced house Commercial/industrial There are many different kinds of workplace and work-related activities. This generic scenario assumes a typical commercial or light industrial property consisting of a three storey building at which employees spend most time indoors and are involved in office based or relatively light physical work. The key assumptions for BWB GSACs are Critical receptor is a working female adult (aged 16 to 65 years) Exposure duration is a working lifetime of 49 years Exposure pathways include direct soil and indoor dust ingestion, skin contact with soils and
dusts, and inhalation of dust and vapours. Soil type is a Sandy Loam with 1% organic matter Building type is a three storey office (post 1970) (Representative of new buildings) The 2009a report identifies 10 potential exposure pathways by which contaminated soils may impact human health and also sets out which pathways are applicable for four standard land uses. The pathways for the residential and commercial end uses are shown below. Screening Criteria Modelling The CLEA model version 1.06 has been used to calculate BWB GSACs. BWB have used the model to calculate Individual criteria for each relevant pathway so, for example, in a residential with vegetable uptake scenario we would need six individual criteria:-
• Ingestion of soil and dust • Ingestion of contaminated vegetables and soil attached to
vegetables • Dermal contact indoors and outdoors • Particulate dust inhalation indoors and outdoors • Vapour inhalation indoors • Vapour inhalation outdoors
The final overall assessment criteria is calculated by adding together the reciprocal of the individual criteria for each pathway, therefore if several of the individual criteria are of similar magnitude the final criteria may be substantially lower than the lowest individual criteria so that total exposure is below the respective health threshold. 1/GSAC = ∑1/ASCingestion +1/ASCinhalation +1/ASCdermal By adopting this methodology BWB are able to provide a more flexible site specific approach to generic human health risk assessment. Pathway Selection - Generic Site Assessment Criteria Pathway Residential Commercial /
Industrial Ingestion of Soil Yes Yes Ingestion of site derived household dust Yes Yes Ingestion of contaminated homegrown produce
Optional No
Ingestion of soil attached to homegrown produce
Optional No
Dermal contact with Soil Yes Yes Dermal contact with site derived household dust
Yes Yes
Inhalation of fugitive soil dust Yes Yes Inhalation of fugitive site derived household dust
Yes Yes
Inhalation of vapours outside Yes Yes Inhalation of vapours inside Yes Yes
Health Criteria Values The general hierarchy for selecting health criteria values is as follows:
1. EA / DEFRA TOX report 2. Other UK authoritative body e.g. Committee on toxicity, Food
Standards Agency 3. EU authoritative body 4. Other EU body e.g. RIVM 5. Other US/International Body
In the absence of updated TOX reports which take into account the recommendations of EA report (2009b) TOX reports produced under the old regime have been used and GSACs will be updated accordingly as further authoritative information is issued. REFERENCES Environment Agency, 2009a, Updated Technical Background to the CLEA Model, Science Report SC050021/SR3 ISBN 978-1-84432-856-7 Environment Agency, 2009b, Human health Toxicological Assessment of Contaminants in Soil, Science Report SC050021/SR2 ISBN 978-1-84432-858-1 Environment Agency 2009c, CLEA Software Handbook (version 1.06) Science Report SC050021/SR4, ISBN 978-1-84432-857-4
Residential with Homegrown Produce Pathway Specific Assessment Sub Criteria
Vapour
Inhala
tion
(Indoors
)
Vapour
Inhala
tion
(Outd
oors
)
Soil
Ingest
ion
Ingest
ion o
f Conta
min
ate
d
Vegeta
ble
s and a
ttach
ed
soil
Derm
al
conta
ct
Part
icula
te
Dust
In
hala
tion
GSAC
(mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) Arsenic NR NR 4.04E+0
1 9.81E+01
2.62E+02
8.50E+01
1.98E+01
Barium NR NR 1.35E+04
1.48E+03
NR 4.25E+06
1.33E+03
Beryllium NR NR 1.56E+02
1.03E+03
NR 2.89E+01
2.38E+01
Boron NR NR 1.08E+04
1.50E+02
NR 3.40E+06
1.48E+02
Cadmium pH 5 NR NR 6.74E+01
5.42E-01
1.31E+04
4.25E+01
5.31E-01
Cadmium pH 6 NR NR 6.74E+01
2.44E+00
1.31E+04
4.25E+01
2.23E+00
Cadmium pH 7 NR NR 6.74E+01
7.62E+00
1.31E+04
4.25E+01
5.89E+00
Cadmium pH 8 NR NR 6.74E+01
1.30E+01
1.31E+04
4.25E+01
8.66E+00
Cadmium pH 9 NR NR 6.74E+01
1.50E+01
1.31E+04
4.25E+01
9.52E+00
Chromium NR NR 3.06E+02
4.05E+02
NR 4.25E+01
3.42E+01
Copper NR NR 1.08E+04
5.13E+03
NR 3.40E+06
3.47E+03
Mercury NR NR 2.15E+01
2.87E+01
NR 1.27E+04
1.23E+01
Nickel NR NR 3.37E+02
4.24E+02
NR 1.27E+02
7.59E+01
Selenium NR NR 3.37E+02
1.69E+01
NR 1.06E+05
1.61E+01
Vanadium NR NR 2.30E+02
1.82E+02
NR 8.29E+03
1.00E+02
Zinc NR NR 4.37E+04
5.82E+03
NR 1.38E+07
5.13E+03
Phenol 5.14E+04
4.82E+07
8.92E+04
4.40E+02
6.95E+04
2.81E+07
4.32E+02
TPH (>EC6-7) aromatic (benzene)
1.28E-02
3.13E+03
3.91E+01
1.13E-01
5.85E+01
3.87E+04
1.15E-02
TPH (>EC7-8) aromatic (toluene)
3.04E+00
4.19E+05
2.69E+04
1.33E+02
5.23E+04
2.82E+06
2.97E+00
Ethylbenzene 1.30E+01
1.37E+06
1.34E+04
1.07E+02
2.62E+04
6.89E+06
1.16E+01
m-Xylene 6.06E+00
5.50E+05
2.40E+04
2.03E+02
4.67E+04
2.39E+06
5.89E+00
p-Xylene 5.83E+00
5.39E+05
2.40E+04
1.91E+02
4.67E+04
2.39E+06
5.66E+00
o-Xylene 6.52E+00
5.70E+05
2.40E+04
1.86E+02
4.67E+04
2.39E+06
6.30E+00
TPH (EC5-6) aliphatic
2.97E+00
2.53E+06
6.74E+05
9.69E+03
1.01E+06
1.12E+08
2.97E+00
TPH (>EC6-8) aliphatic
7.75E+00
4.08E+06
6.74E+05
3.30E+04
1.01E+06
1.12E+08
7.75E+00
TPH (>EC8-10) aliphatic
2.14E+00
4.99E+05
6.74E+03
2.29E+03
1.01E+04
6.08E+06
2.13E+00
TPH (>EC10-12) aliphatic
1.27E+01
1.22E+06
6.74E+03
1.75E+04
1.01E+04
6.08E+06
1.26E+01
TPH (>EC12-16) aliphatic
6.38E+01
2.73E+06
6.74E+03
2.23E+05
1.01E+04
6.08E+06
6.28E+01
TPH (>EC16-21) aliphatic
7.35E+03
7.74E+07
1.35E+05
1.16E+07
2.02E+05
4.25E+07
6.73E+03
TPH (>EC21-35) aliphatic
7.35E+03
7.74E+07
1.35E+05
1.16E+07
2.02E+05
4.25E+07
6.73E+03
Residential with Homegrown Produce Pathway Specific Assessment Sub Criteria
Vapour
Inhala
tion
(Indoors
)
Vapour
Inhala
tion
(Outd
oors
)
Soil
Ingest
ion
Ingest
ion o
f Conta
min
ate
d
Vegeta
ble
s and a
ttach
ed
soil
Derm
al
conta
ct
Part
icula
te
Dust
In
hala
tion
GSAC
(mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) TPH (>EC35-44) aliphatic
7.35E+03
7.74E+07
1.35E+05
1.16E+07
2.02E+05
4.25E+07
6.73E+03
TPH (>EC6-7) aromatic (benzene)
1.28E-02
3.13E+03
3.91E+01
1.13E-01
5.85E+01
3.87E+04
1.15E-02
TPH (>EC7-8) aromatic (toluene)
3.04E+00
4.19E+05
2.69E+04
1.33E+02
5.23E+04
2.82E+06
2.97E+00
TPH (>EC8-10) aromatic
3.64E+00
2.91E+05
2.70E+03
7.45E+01
4.04E+03
1.21E+06
3.46E+00
TPH (>EC10-12) aromatic
2.18E+01
7.11E+05
2.70E+03
9.71E+01
4.04E+03
1.21E+06
1.76E+01
TPH (>EC12-16) aromatic
1.23E+02
1.68E+06
2.70E+03
1.67E+02
4.04E+03
1.21E+06
6.77E+01
TPH (>EC16-21) aromatic
9.47E+02
3.34E+06
2.02E+03
3.45E+02
3.03E+03
6.37E+05
2.09E+02
TPH (>EC21-35) aromatic
1.21E+05
2.50E+07
2.02E+03
2.66E+03
3.03E+03
6.37E+05
8.26E+02
TPH (>EC35-44) aromatic
1.21E+05
2.50E+07
2.02E+03
2.66E+03
3.03E+03
6.37E+05
8.26E+02
Naphthalene 1.64E+00
3.17E+04
2.64E+03
2.72E+01
3.96E+03
2.93E+04
1.54E+00
Acenaphthylene 1.36E-01
8.48E+02
2.70E+02
8.15E+00
4.04E+02
2.97E+02
1.33E-01
Acenaphthene 5.27E+00
1.84E+04
2.70E+03
2.34E+02
4.04E+03
2.97E+03
5.13E+00
Fluorene 8.67E+03
1.77E+07
5.39E+03
8.53E+02
8.07E+03
1.70E+06
6.26E+02
Phenanthrene 3.44E+01
3.91E+04
2.70E+03
6.69E+02
4.04E+03
2.97E+03
3.17E+01
Anthracene 3.41E+05
2.69E+08
4.04E+04
1.30E+04
6.06E+04
1.27E+07
8.27E+03
Fluoranthene 1.59E+01
7.09E+03
2.70E+02
5.59E+01
4.04E+02
2.97E+02
1.11E+01
Pyrene 1.52E+02
6.71E+04
2.70E+03
4.96E+02
4.04E+03
2.97E+03
1.04E+02
Benzo(a)anthracene 1.12E+01
1.57E+03
2.70E+01
2.72E+01
4.04E+01
2.97E+01
4.50E+00
Chrysene 5.91E+02
1.37E+04
2.70E+02
1.87E+02
4.04E+02
2.97E+02
6.00E+01
Benzo(b)fluoranthene
1.72E+02
1.93E+03
2.70E+01
3.81E+01
4.04E+01
2.97E+01
7.81E+00
Benzo(k)fluoranthene
2.83E+02
2.30E+03
2.70E+01
5.52E+01
4.04E+01
2.97E+01
8.51E+00
Benzo(a)pyrene 2.44E+01
2.13E+02
2.70E+00
4.75E+00
4.04E+00
2.97E+00
8.26E-01
Indeno(123-cd)pyrene
1.43E+02
1.79E+03
2.70E+01
3.13E+01
4.04E+01
2.97E+01
7.41E+00
Dibenzo(ah)anthracene
1.22E+01
2.65E+02
2.70E+00
7.15E+00
4.04E+00
2.97E+00
8.47E-01
Benzo(g,h,i)perylene 2.56E+07
1.66E+08
4.04E+03
2.41E+04
6.06E+03
1.27E+06
2.20E+03
Tetrachloroethene (PCE)
1.35E+00
2.65E+05
1.82E+03
1.07E+01
3.55E+03
2.50E+06
1.20E+00
Trichloroethene (TCE)
1.10E-01
2.22E+04
7.01E+02
2.85E+00
1.05E+03
2.21E+05
1.06E-01
Vinyl Chloride (VC) 5.43E-04
3.59E+02
1.89E+00
3.70E-03
3.67E+00
1.27E+04
4.73E-04
1,1,2,2-Tetrachloroethane (PCA)
2.76E+00
1.17E+05
7.67E+02
2.72E+00
1.49E+03
2.41E+05
1.37E+00
1,1,1-Trichloroethane (TCA)
6.33E+00
1.79E+06
8.09E+04
3.22E+02
1.57E+05
2.46E+07
6.21E+00
Residential with Homegrown Produce Pathway Specific Assessment Sub Criteria
Vapour
Inhala
tion
(Indoors
)
Vapour
Inhala
tion
(Outd
oors
)
Soil
Ingest
ion
Ingest
ion o
f Conta
min
ate
d
Vegeta
ble
s and a
ttach
ed
soil
Derm
al
conta
ct
Part
icula
te
Dust
In
hala
tion
GSAC
(mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) 1,2-Dichloroethane 6.46E-
03 8.09E+02
1.62E+01
3.07E-02
3.15E+01
5.10E+03
5.34E-03
Carbon Tetrachloride 1.81E-02
5.07E+03
1.90E+02
1.06E+00
3.70E+02
6.93E+04
1.78E-02
Residential Without Homegrown Produce Pathway Specific Assessment Sub Criteria V
apour
Inhala
tion
(Indoors
)
Vapour
Inhala
tion
(Outd
oors
)
Soil
Ingest
ion
Derm
al
conta
ct
Part
icula
te
Dust
In
hala
tion
GSAC
(mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) Arsenic NR NR 4.04E+01 2.62E+02 8.50E+01 2.48E+01 Barium NR NR 1.35E+04 NR 4.25E+06 1.34E+04 Beryllium NR NR 1.56E+02 NR 2.89E+01 2.44E+01 Boron NR NR 1.08E+04 NR 3.40E+06 1.08E+04 Cadmium NR NR 6.74E+01 1.31E+04 4.25E+01 2.60E+01 Chromium NR NR 3.06E+02 NR 4.25E+01 3.73E+01 Copper NR NR 1.08E+04 NR 3.40E+06 1.08E+04 Lead Mercury NR NR 2.15E+01 NR 1.27E+04 2.14E+01 Nickel NR NR 3.37E+02 NR 1.27E+02 9.25E+01 Selenium NR NR 3.37E+02 NR 1.06E+05 3.36E+02 Vanadium NR NR 2.30E+02 NR 8.29E+03 2.24E+02 Zinc NR NR 4.37E+04 NR 1.38E+07 4.36E+04 Cyanide (free) Cyanide (Complex) Phenol 5.14E+04 4.82E+07 8.92E+04 6.95E+04 2.81E+07 2.22E+04 TPH (>EC6-7) aromatic (benzene)
1.28E-02 3.13E+03 3.91E+01 5.85E+01 3.87E+04 1.28E-02
TPH (>EC7-8) aromatic (toluene)
3.04E+00 4.19E+05 2.69E+04 5.23E+04 2.82E+06 3.04E+00
Ethylbenzene 1.30E+01 1.37E+06 1.34E+04 2.62E+04 6.89E+06 1.30E+01 m-Xylene 6.06E+00 5.50E+05 2.40E+04 4.67E+04 2.39E+06 6.06E+00 p-Xylene 5.83E+00 5.39E+05 2.40E+04 4.67E+04 2.39E+06 5.83E+00 o-Xylene 6.52E+00 5.70E+05 2.40E+04 4.67E+04 2.39E+06 6.52E+00 TPH (EC5-6) aliphatic 2.97E+00 2.53E+06 6.74E+05 1.01E+06 1.12E+08 2.97E+00 TPH (>EC6-8) aliphatic 7.75E+00 4.08E+06 6.74E+05 1.01E+06 1.12E+08 7.75E+00 TPH (>EC8-10) aliphatic
2.14E+00 4.99E+05 6.74E+03 1.01E+04 6.08E+06 2.14E+00
TPH (>EC10-12) aliphatic
1.27E+01 1.22E+06 6.74E+03 1.01E+04 6.08E+06 1.26E+01
TPH (>EC12-16) aliphatic
6.38E+01 2.73E+06 6.74E+03 1.01E+04 6.08E+06 6.28E+01
TPH (>EC16-21) aliphatic
7.35E+03 7.74E+07 1.35E+05 2.02E+05 4.25E+07 6.73E+03
TPH (>EC21-35) aliphatic
7.35E+03 7.74E+07 1.35E+05 2.02E+05 4.25E+07 6.73E+03
TPH (>EC35-44) aliphatic
7.35E+03 7.74E+07 1.35E+05 2.02E+05 4.25E+07 6.73E+03
TPH (>EC6-7) aromatic (benzene)
1.28E-02 3.13E+03 3.91E+01 5.85E+01 3.87E+04 1.28E-02
TPH (>EC7-8) aromatic (toluene)
3.04E+00 4.19E+05 2.69E+04 5.23E+04 2.82E+06 3.04E+00
TPH (>EC8-10) aromatic
3.64E+00 2.91E+05 2.70E+03 4.04E+03 1.21E+06 3.63E+00
TPH (>EC10-12) aromatic
2.18E+01 7.11E+05 2.70E+03 4.04E+03 1.21E+06 2.15E+01
TPH (>EC12-16) aromatic
1.23E+02 1.68E+06 2.70E+03 4.04E+03 1.21E+06 1.14E+02
TPH (>EC16-21) aromatic
9.47E+02 3.34E+06 2.02E+03 3.03E+03 6.37E+05 5.31E+02
TPH (>EC21-35) aromatic
1.21E+05 2.50E+07 2.02E+03 3.03E+03 6.37E+05 1.20E+03
TPH (>EC35-44) aromatic
1.21E+05 2.50E+07 2.02E+03 3.03E+03 6.37E+05 1.20E+03
Naphthalene 1.64E+00 3.17E+04 2.64E+03 3.96E+03 2.93E+04 1.64E+00 Acenaphthylene 1.36E-01 8.48E+02 2.70E+02 4.04E+02 2.97E+02 1.35E-01 Acenaphthene 5.27E+00 1.84E+04 2.70E+03 4.04E+03 2.97E+03 5.25E+00 Fluorene 8.67E+03 1.77E+07 5.39E+03 8.07E+03 1.70E+06 2.35E+03 Phenanthrene 3.44E+01 3.91E+04 2.70E+03 4.04E+03 2.97E+03 3.33E+01 Anthracene 3.41E+05 2.69E+08 4.04E+04 6.06E+04 1.27E+07 2.26E+04 Fluoranthene 1.59E+01 7.09E+03 2.70E+02 4.04E+02 2.97E+02 1.38E+01
Residential Without Homegrown Produce Pathway Specific Assessment Sub Criteria V
apour
Inhala
tion
(Indoors
)
Vapour
Inhala
tion
(Outd
oors
)
Soil
Ingest
ion
Derm
al
conta
ct
Part
icula
te
Dust
In
hala
tion
GSAC
(mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) Pyrene 1.52E+02 6.71E+04 2.70E+03 4.04E+03 2.97E+03 1.32E+02 Benzo(a)anthracene 1.12E+01 1.57E+03 2.70E+01 4.04E+01 2.97E+01 5.39E+00 Chrysene 5.91E+02 1.37E+04 2.70E+02 4.04E+02 2.97E+02 8.84E+01 Benzo(b)fluoranthene 1.72E+02 1.93E+03 2.70E+01 4.04E+01 2.97E+01 9.82E+00 Benzo(k)fluoranthene 2.83E+02 2.30E+03 2.70E+01 4.04E+01 2.97E+01 1.01E+01 Benzo(a)pyrene 2.44E+01 2.13E+02 2.70E+00 4.04E+00 2.97E+00 1.00E+00 Indeno(123-cd)pyrene 1.43E+02 1.79E+03 2.70E+01 4.04E+01 2.97E+01 9.71E+00 Dibenzo(ah)anthracene 1.22E+01 2.65E+02 2.70E+00 4.04E+00 2.97E+00 9.61E-01 Benzo(g,h,i)perylene 2.56E+07 1.66E+08 4.04E+03 6.06E+03 1.27E+06 2.42E+03 Tetrachloroethene (PCE)
1.35E+00 2.65E+05 1.82E+03 3.55E+03 2.50E+06 1.35E+00
Trichloroethene (TCE) 1.10E-01 2.22E+04 7.01E+02 1.05E+03 2.21E+05 1.10E-01 Vinyl Chloride (VC) 5.43E-04 3.59E+02 1.89E+00 3.67E+00 1.27E+04 5.43E-04 1,1,2,2-Tetrachloroethane (PCA)
2.76E+00 1.17E+05 7.67E+02 1.49E+03 2.41E+05 2.74E+00
1,1,1-Trichloroethane (TCA)
6.33E+00 1.79E+06 8.09E+04 1.57E+05 2.46E+07 6.33E+00
1,2-Dichloroethane 6.46E-03 8.09E+02 1.62E+01 3.15E+01 5.10E+03 6.46E-03 Carbon Tetrachloride 1.81E-02 5.07E+03 1.90E+02 3.70E+02 6.93E+04 1.81E-02
Commercial Pathway Specific Assessment Sub Criteria
Vapour
Inhala
tion
(Indoors
)
Vapour
Inhala
tion
(Outd
oors
)
Soil
Ingest
ion
Derm
al
conta
ct
Part
icula
te
Dust
In
hala
tion
GSAC
(mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) Arsenic NR NR 6.67E+02 1.35E+04 6.95E+02 3.32E+02 Barium NR NR 2.22E+05 NR 3.48E+07 2.21E+05 Beryllium NR NR 3.97E+03 NR 2.36E+02 2.23E+02 Boron NR NR 2.38E+05 NR 3.72E+07 2.37E+05 Cadmium NR NR 1.71E+03 1.04E+06 3.48E+02 2.89E+02 Chromium NR NR 6.25E+03 NR 3.48E+02 3.29E+02 Copper NR NR 1.78E+05 NR 2.78E+07 1.77E+05 Mercury NR NR 5.87E+02 NR 1.04E+05 5.84E+02 Nickel NR NR 6.03E+03 NR 1.04E+03 8.89E+02 Selenium NR NR 9.65E+03 NR 1.51E+06 9.59E+03 Vanadium NR NR 5.94E+03 NR 9.20E+04 5.58E+03 Zinc NR NR 8.79E+05 NR 1.38E+08 8.74E+05 Phenol 2.00E+07 1.05E+08 1.53E+06 3.72E+06 2.40E+08 1.02E+06 TPH (>EC6-7) aromatic (benzene)
2.26E+00 6.52E+03 6.44E+02 3.00E+03 3.16E+05 2.25E+00
TPH (>EC7-8) aromatic (toluene)
5.65E+02 9.47E+05 4.44E+05 2.69E+06 2.51E+07 5.63E+02
Ethylbenzene 2.24E+03 2.95E+06 2.22E+05 1.34E+06 5.84E+07 2.21E+03 m-Xylene 1.10E+03 1.25E+06 3.97E+05 2.40E+06 2.13E+07 1.10E+03 p-Xylene 1.06E+03 1.23E+06 3.97E+05 2.40E+06 2.13E+07 1.05E+03 o-Xylene 1.18E+03 1.30E+06 3.97E+05 2.40E+06 2.13E+07 1.18E+03 TPH (EC5-6) aliphatic 5.47E+02 5.26E+06 1.11E+07 5.17E+07 9.14E+08 5.47E+02 TPH (>EC6-8) aliphatic 1.42E+03 8.49E+06 1.11E+07 5.17E+07 9.14E+08 1.42E+03 TPH (>EC8-10) aliphatic
3.93E+02 1.04E+06 1.11E+05 5.17E+05 4.97E+07 3.91E+02
TPH (>EC10-12) aliphatic
2.33E+03 2.53E+06 1.11E+05 5.17E+05 4.97E+07 2.27E+03
TPH (>EC12-16) aliphatic
1.17E+04 5.68E+06 1.11E+05 5.17E+05 4.97E+07 1.04E+04
TPH (>EC16-21) aliphatic
1.35E+06 1.61E+08 2.22E+06 1.03E+07 3.48E+08 7.72E+05
TPH (>EC21-35) aliphatic
1.35E+06 1.61E+08 2.22E+06 1.03E+07 3.48E+08 7.72E+05
TPH (>EC35-44) aliphatic
1.35E+06 1.61E+08 2.22E+06 1.03E+07 3.48E+08 7.72E+05
TPH (>EC6-7) aromatic (benzene)
2.26E+00 6.52E+03 6.44E+02 3.00E+03 3.16E+05 2.25E+00
TPH (>EC7-8) aromatic (toluene)
5.65E+02 9.47E+05 4.44E+05 2.69E+06 2.51E+07 5.63E+02
TPH (>EC8-10) aromatic
6.69E+02 6.05E+05 4.44E+04 2.07E+05 9.91E+06 6.56E+02
TPH (>EC10-12) aromatic
4.03E+03 1.48E+06 4.44E+04 2.07E+05 9.91E+06 3.62E+03
TPH (>EC12-16) aromatic
2.27E+04 3.50E+06 4.44E+04 2.07E+05 9.91E+06 1.39E+04
TPH (>EC16-21) aromatic
1.81E+05 6.96E+06 3.33E+04 1.55E+05 5.21E+06 2.36E+04
TPH (>EC21-35) aromatic
3.64E+07 5.20E+07 3.33E+04 1.55E+05 5.21E+06 2.73E+04
TPH (>EC35-44) aromatic
3.64E+07 5.20E+07 3.33E+04 1.55E+05 5.21E+06 2.73E+04
Naphthalene 3.22E+02 7.85E+04 4.42E+04 2.06E+05 2.85E+05 3.17E+02 Acenaphthylene 2.69E+01 1.77E+03 4.44E+03 2.07E+04 2.43E+03 2.60E+01 Acenaphthene 8.32E+02 3.83E+04 4.44E+04 2.07E+05 2.43E+04 7.71E+02 Fluorene 1.39E+06 3.70E+07 8.88E+04 4.14E+05 1.39E+07 6.90E+04 Phenanthrene 7.91E+03 8.13E+04 4.44E+04 2.07E+05 2.43E+04 4.83E+03 Anthracene 7.22E+07 5.60E+08 6.67E+05 3.10E+06 1.04E+08 5.41E+05 Fluoranthene 4.38E+03 1.47E+04 4.44E+03 2.07E+04 2.43E+03 1.02E+03 Pyrene 4.29E+04 1.40E+05 4.44E+04 2.07E+05 2.43E+04 1.01E+04 Benzo(a)anthracene 3.47E+03 3.27E+03 4.44E+02 2.07E+03 2.43E+02 1.34E+02 Chrysene 2.23E+05 2.85E+04 4.44E+03 2.07E+04 2.43E+03 1.38E+03
Commercial Pathway Specific Assessment Sub Criteria
Vapour
Inhala
tion
(Indoors
)
Vapour
Inhala
tion
(Outd
oors
)
Soil
Ingest
ion
Derm
al
conta
ct
Part
icula
te
Dust
In
hala
tion
GSAC
(mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) Benzo(b)fluoranthene 6.56E+04 4.02E+03 4.44E+02 2.07E+03 2.43E+02 1.41E+02 Benzo(k)fluoranthene 1.09E+05 4.78E+03 4.44E+02 2.07E+03 2.43E+02 1.42E+02 Benzo(a)pyrene 9.37E+03 4.43E+02 4.44E+01 2.07E+02 2.43E+01 1.41E+01 Indeno(123-cd)pyrene 5.46E+04 3.72E+03 4.44E+02 2.07E+03 2.43E+02 1.40E+02 Dibenzo(ah)anthracene 4.49E+03 5.51E+02 4.44E+01 2.07E+02 2.43E+01 1.42E+01 Benzo(g,h,i)perylene 9.73E+09 3.46E+08 6.66E+04 3.10E+05 1.04E+07 5.46E+04 Tetrachloroethene (PCE)
2.59E+02 6.38E+05 3.08E+04 1.87E+05 2.37E+07 2.57E+02
Trichloroethene (TCE) 1.89E+01 4.63E+04 1.16E+04 5.38E+04 1.81E+06 1.88E+01 Vinyl Chloride (VC) 1.03E-01 7.47E+02 3.11E+01 1.88E+02 1.04E+05 1.03E-01 1,1,2,2-Tetrachloroethane (PCA)
4.69E+02 2.49E+05 1.28E+04 7.76E+04 2.01E+06 4.49E+02
1,1,1-Trichloroethane (TCA)
1.11E+03 3.81E+06 1.33E+06 8.07E+06 2.07E+08 1.11E+03
1,2-Dichloroethane 1.14E+00 1.68E+03 2.67E+02 1.61E+03 4.17E+04 1.14E+00 Carbon Tetrachloride 4.81E+00 1.65E+04 3.15E+03 1.91E+04 8.85E+05 4.80E+00
APPENDIX 4
GENERAL FILL (ABOVE 2M OF FORMATION) VALIDATION CRITERIA
Generic Assessment Criteria
Harworth Phase 1A Development
General Fill (within 2m of
formation) NTE2034 mg/kg SourceArsenic 1.25E+02 BWBBarium 6.66E+04 BWBBeryllium 3.77E+02 BWBBoron 5.33E+04 BWBCadmium 1.11E+02 BWBChromium VI 5.78E+02 BWBCopper 5.33E+04 BWBLead* 4.50E+02 SGVInorganic Mercury 1.28E+03 BWBNickel 3.76E+03 BWBSelenium 3.63E+03 BWBVanadium 1.58E+03 BWBZinc 2.49E+05 BWBCyanide (Free) 4.30E+01 SNIFFERCyanide (Complex) 2.13E+02 SNIFFERPhenols (Total) 8.89E+02 BWBEthyl benzene 5.18E+02 BWBm-Xylene 6.25E+02 BWBp-Xylene 5.76E+02 BWBo-Xylene 4.78E+02 BWBTPH (EC5-6) aliphatic 2.29E+02 BWBTPH (>EC6-8) aliphatic 5.95E+02 BWBTPH (>EC8-10) aliphatic 1.60E+02 BWBTPH (>EC10-12) aliphatic 8.53E+02 BWBTPH (>EC12-16) aliphatic 3.02E+03 BWBTPH (>EC16-21) aliphatic 1.27E+05 BWBTPH (>EC21-35) aliphatic 1.27E+05 BWBTPH (>EC35-44) aliphatic 1.27E+05 BWBTPH (>EC6-7) aromatic (benzene) 1.37E+01 BWBTPH (>EC7-8) aromatic (toluene) 8.69E+02 BWBTPH (>EC8-10) aromatic 2.49E+02 BWBTPH (>EC10-12) aromatic 1.06E+03 BWBTPH (>EC12-16) aromatic 2.45E+03 BWBTPH (>EC16-21) aromatic 2.57E+03 BWBTPH (>EC21-35) aromatic 2.77E+03 BWBTPH (>EC35-44) aromatic 2.77E+03 BWB
Generic Assessment Criteria
Harworth Phase 1A Development
General Fill (within 2m of
formation) NTE2034 mg/kg SourceNaphthalene 1.18E+02 BWBAcenaphthylene 5.94E+00 BWBAcenaphthene 1.76E+02 BWBFluorene 7.19E+03 BWBPhenanthrene 4.63E+02 BWBAnthracene 5.50E+04 BWBFluoranthene 8.40E+01 BWBPyrene 8.05E+02 BWBBenzo(a)anthracene 1.51E+01 BWBChrysene 1.42E+02 BWBBenzo(b)fluoranthene 1.72E+01 BWBBenzo(k)fluoranthene 1.87E+01 BWBBenzo(a)pyrene 1.81E+00 BWBIndeno(1,2,3-c,d)pyrene 1.65E+01 BWBDibenzo(a,h)anthracene 1.99E+00 BWBBenzo(g,hi)perylene 5.57E+03 BWB
APPENDIX 5
ENGINEERED FILL (BELOW 2M OF FORMATION) VALIDATION CRITERIA
Generic Assessment Criteria
Harworth Phase 1A Development
Engineered Fill (below 2m of
formation) Validation
CriteriaNTE2034 mg/kg SourceArsenic Not of concern BWBBarium Not of concern BWBBeryllium Not of concern BWBBoron Not of concern BWBCadmium Not of concern BWBChromium VI Not of concern BWBCopper Not of concern BWBLead* Not of concern SGVInorganic Mercury Not of concern BWBNickel Not of concern BWBSelenium Not of concern BWBVanadium Not of concern BWBZinc Not of concern BWBCyanide (Free) Not of concern SNIFFERCyanide (Complex) Not of concern SNIFFERPhenols (Total) 5.52E+05 BWBEthyl benzene 1.79E+06 BWBm-Xylene 5.04E+05 BWBp-Xylene 4.94E+05 BWBo-Xylene 5.23E+05 BWBTPH (EC5-6) aliphatic 2.53E+06 BWBTPH (>EC6-8) aliphatic 4.08E+06 BWBTPH (>EC8-10) aliphatic 4.99E+05 BWBTPH (>EC10-12) aliphatic 1.22E+06 BWBTPH (>EC12-16) aliphatic 2.73E+06 BWBTPH (>EC16-21) aliphatic 7.74E+07 BWBTPH (>EC21-35) aliphatic 7.74E+07 BWBTPH (>EC35-44) aliphatic 7.74E+07 BWBTPH (>EC6-7) aromatic (benzene) 5.63E+03 BWBTPH (>EC7-8) aromatic (toluene) 8.62E+06 BWBTPH (>EC8-10) aromatic 2.91E+05 BWBTPH (>EC10-12) aromatic 7.11E+05 BWBTPH (>EC12-16) aromatic 1.68E+06 BWBTPH (>EC16-21) aromatic 3.34E+06 BWBTPH (>EC21-35) aromatic 2.50E+07 BWBTPH (>EC35-44) aromatic 2.50E+07 BWB
Generic Assessment Criteria
Harworth Phase 1A Development
Engineered Fill (below 2m of
formation) Validation
CriteriaNTE2034 mg/kg SourceNaphthalene 3.17E+04 BWBAcenaphthylene 8.48E+02 BWBAcenaphthene 1.84E+04 BWBFluorene 1.77E+07 BWBPhenanthrene 3.91E+04 BWBAnthracene 2.69E+08 BWBFluoranthene 7.09E+03 BWBPyrene 6.71E+04 BWBBenzo(a)anthracene 1.57E+03 BWBChrysene 1.37E+04 BWBBenzo(b)fluoranthene 1.93E+03 BWBBenzo(k)fluoranthene 2.30E+03 BWBBenzo(a)pyrene 2.13E+02 BWBIndeno(1,2,3-c,d)pyrene 1.79E+03 BWBDibenzo(a,h)anthracene 2.65E+02 BWBBenzo(g,hi)perylene 1.66E+08 BWB
APPENDIX 6
IMPORTED TOPSOIL/ SUBSOIL VALIDATION CRITERIA
Generic Assessment Criteria
Harworth Phase 1A Development
Topsoil Validation
CriteriaNTE2034 mg/kg SourceArsenic 3.24E+01 BWBBarium 1.33E+03 BWBBeryllium 2.38E+01 BWBBoron 1.48E+02 BWBCadmium 1.04E+01 BWBChromium VI 3.42E+01 BWBCopper 1.00E+02 BS3882Lead* 4.50E+02 SGVInorganic Mercury 1.69E+02 BWBNickel 6.00E+01 BS3882Selenium 3.50E+02 BWBVanadium 1.00E+02 BWBZinc 2.00E+02 BS3882Cyanide (Free) 4.30E+01 SNIFFERCyanide (Complex) 2.13E+02 SNIFFERPhenols (Total) 1.84E+02 BWBEthyl benzene 6.52E+01 BWBm-Xylene 4.36E+01 BWBp-Xylene 4.17E+01 BWBo-Xylene 4.52E+01 BWBTPH (EC5-6) aliphatic 2.97E+00 BWBTPH (>EC6-8) aliphatic 7.75E+00 BWBTPH (>EC8-10) aliphatic 2.13E+00 BWBTPH (>EC10-12) aliphatic 1.26E+01 BWBTPH (>EC12-16) aliphatic 6.28E+01 BWBTPH (>EC16-21) aliphatic 6.73E+03 BWBTPH (>EC21-35) aliphatic 6.73E+03 BWBTPH (>EC35-44) aliphatic 6.73E+03 BWBTPH (>EC6-7) aromatic (benzene) 7.92E-02 BWBTPH (>EC7-8) aromatic (toluene) 1.19E+02 BWBTPH (>EC8-10) aromatic 3.46E+00 BWBTPH (>EC10-12) aromatic 1.76E+01 BWBTPH (>EC12-16) aromatic 6.77E+01 BWBTPH (>EC16-21) aromatic 2.09E+02 BWBTPH (>EC21-35) aromatic 8.26E+02 BWBTPH (>EC35-44) aromatic 8.26E+02 BWB
Generic Assessment Criteria
Harworth Phase 1A Development
Topsoil Validation
CriteriaNTE2034 mg/kg SourceNaphthalene 1.54E+00 BWBAcenaphthylene 1.33E-01 BWBAcenaphthene 5.13E+00 BWBFluorene 6.26E+02 BWBPhenanthrene 3.17E+01 BWBAnthracene 8.27E+03 BWBFluoranthene 1.11E+01 BWBPyrene 1.04E+02 BWBBenzo(a)anthracene 4.50E+00 BWBChrysene 6.00E+01 BWBBenzo(b)fluoranthene 7.81E+00 BWBBenzo(k)fluoranthene 8.51E+00 BWBBenzo(a)pyrene 8.26E-01 BWBIndeno(1,2,3-c,d)pyrene 7.41E+00 BWBDibenzo(a,h)anthracene 8.47E-01 BWBBenzo(g,hi)perylene 2.20E+03 BWB
APPENDIX 7
PROPOSED SITE LAYOUT PLAN
12
13
14
23
24
25
27
26
28
31
29
30
32
39
37
38
50
40
49
41
42
51
43
44
45
46
47
48
52
55
535
4
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
77
76
W
Bi
LL
Cr
Cr
Bi
Br
86
89
85
90
88
87
91
94
95
92
96
93
10
6
99
97
10
1
98
10
0
10
2
10
9
11
0
10
3
10
5
10
4
10
8 10
7
11
2
11
1
W
Da
L
L3
Ma
Da
Da
Ma
Br
Br
Ma
Ma
Br
Br
Br
Da
W
Da
W
11
3
11
4
Br
11
5
11
6
11
7
Br
LL
76
Da
HH
Ma
LL
11
8
76
87
3
91
01
1
4
5
6
Ca
1
2
Da
Ma
W
Da
Br
Da
Ma
Br
H
Br
63
64
65
Br
74
75 7
77
8
L3
79
81
80
79
LL
78
Cr
Cr
82
84
Bi
83
82
81
80
83
84
Bi
Bi
Bi
Bi
Bi
Bi
Bi
Bi
Bi
HH
Bi
Bi
29
30
31
19
V2
22
12
2
19
35
33
34
36
29
30
31
36
37
38
52
54
53
Ca
Ca
63
64
65
74
75
77
79
78
84
83
82
81
80
35
18
Ca
32
33
34
40
49
50
39
36
37
38
35
32
33
34
40
49
50
39
52
54
53
Br
Br 15
17
HH
17
18
Bi
Bi
16
17
18
51
51
6262
66
66
LL
3L
3
L
Greenhouse
Beeston R
oadLeeds ∙ LS
11 6AD
ARCHITECTS
Em
ail ∙ info@q-ad
.co.ukW
eb ∙ ww
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Status
Project
Draw
ing Title
Draw
ing S
ize A0
Job No.
Draw
ing N
o.S
caleR
evision
Review
ed byD
rawn by
Date
No
te:
Co
ntra
cto
rs m
ust v
erify
all d
imensio
ns o
n s
ite b
efo
re
co
mm
en
cin
g a
ny w
ork
or s
ho
p d
raw
ings. T
his
dra
win
g is
not
to b
e s
ca
led
. Use
d fig
ure
d d
ime
nsio
ns o
nly
. If in d
oubt,
ple
ase
call Q
AD
.
Rev
Note
Revised
Checked
SIT
E P
LA
N
HA
RW
OR
TH
AD
IB10/1
1
PR
01
1:5
00
PR
EL
IMIN
AR
Y
JO
NE
S H
OM
ES
11
-030
V