Mercer Island School District Buildings Mercer Island ...€¦ · Mercer Island School District...

DRINKING WATER SAMPLE AND ANALYSIS REPORT

Mercer Island School District Buildings Mercer Island, Washington

Prepared for:

Tony Kuhn Mercer Island School District 4160 86th Avenue Southeast

Mercer Island, Washington 98040

Submitted by:

Med-Tox Northwest Post Office Box 1446

Auburn, Washington 98071 (253) 351-0677

E-8125.15

May 20, 2016

Drinking Water Sampling — District Facilities

May 20, 2016 i MISD

Table of ContentsAcronyms ......................................................................................................................ii

Executive Summary ..................................................................................................... 1

Background ................................................................................................................. 3

Seattle Public Utilities (SPU) .................................................................................... 3

Scope of Work ............................................................................................................. 4

Sampling Procedures and Protocol ............................................................................. 5

Sampling Procedures ............................................................................................... 5

Sampling and Preservation Requirements ............................................................... 5

Results ..................................................................................................................... 6

Laboratory Analytical Methods .................................................................................... 8

Conclusion and Recommendations ............................................................................. 8

Limitations ................................................................................................................... 9

Appendix A Site Map ....................................................................................................... A

Appendix B Analytical Results ......................................................................................... B

Appendix C OnSite Laboratory Accreditation ..................................................................C

Appendix D Sample Location Drawings ..........................................................................D

Tables Table 1. MISD Schools and Buildings .................................................................................... 4

Table 2. Summary of Lead (Pb) Drinking Water Results ........................................................ 6

Table 3. Analyses and Methods ............................................................................................. 8


May 20, 2016 ii MISD

Acronyms

CCR Consumer Confidence Report CFR Code of Federal Regulations CHMM Certified Hazardous Materials Manager CSP Certified Safety Professional DOH Washington Department of Health EPA Environmental Protection Agency HNO3 Nitric Acid MCL maximum contaminant level MCLG maximum contaminant level goals mg/L milligrams per liter

MISD Mercer Island School District MOT Maintenance, Operations and Transportation MTNW Med-Tox Northwest NIOSH National Institute for Occupational Safety and Health ODW Office of Drinking Water OnSite OnSite Environmental, Inc. ppb parts per billion SPU Seattle Public Utilities TT Treatment Technique µg/L micrograms per liter WAC Washington Administrative Code WDOE Washington Department of Ecology

Drinking Water Testing – District Facilities

May 20, 2016 1 MISD

Executive Summary

Med-Tox Northwest (MTNW) is under contract with Mercer Island School District (MISD) to perform drinking water sampling for lead content in district schools and support facilities located on Mercer Island, Washington. Sampling was performed on May 5 and 6, 2016 in accordance with our “Drinking Water Sample and Analysis Plan” dated May 2016.

MISD facilities are supplied water from Seattle Public Utilities and is not a drinking water supplier. At the time of this report, there are no regulatory requirements for MISD to perform this type and level of sampling, however, the intent of this sampling program is to ensure that drinking water in the school buildings and facilities meet guidelines and/or recommendations set by the United States Environmental Protection Agency (EPA) for schools.

For this testing program, MTNW tested for lead as recommended by the EPA following the Lead and Copper rule protocol. Future sampling will include testing for asbestos, cadmium, copper, iron, and zinc which are contaminants that can be found in deteriorating distribution pipes and/or pipe systems in older buildings. Turbidity, which refers to how cloudy the water is, will also be tested as part of an annual sampling program.

MISD consists of six schools serving a student population of approximately 4,300. Support buildings include a pool facility, an administration building and the maintenance, operations and transportation building (MOT). The buildings were constructed between 1955 and 2009.

Only high priority sites were selected for testing with a goal of testing drinking fountains, classrooms with sink faucets/bubblers, kitchen sinks where food is prepared and staff lounges/breakrooms at each site. The Sample and Analysis Plan used a random selection process to select the classrooms for sampling. Drinking fountains tested were selected based on estimated maximum use. Faucets in each of the buildings with kitchen facilities and staff breakrooms were also included in the sampling program. The following summarizes the sampling and results:

25 drinking fountains were tested at eight sites, the MOT building did not have a drinking fountain. None of the drinking fountains had detectable levels of lead present.

20 classroom faucets were tested in the six school buildings and 11 bubblers (drinking water fixture as part of the classroom sink) were tested in three school buildings. Two faucets at Islander Middle School had 7.3 and 10.0 µg/L of lead detected, none of the other faucets or bubblers had detectable levels of lead present.

11 kitchen area sinks were tested at the six school buildings and specifically food preparation sinks targeted. The administration building, Mary Wayte Pool and the MOT do not prepare food for students. One sink faucet at Island Park


May 20, 2016 2 MISD

Elementary School had lead detected at 5.8 µg/L, none of the other sinks had detectable levels of lead present.

10 staff lounge or break room sink faucets were tested at eight of the nine facilities; Crest Learning Center did not have a separate staff lounge or break room with a sink. None of the sinks had detectable levels of lead present.

EPA’s Maximum Contaminant Level Goal (MCLG) for lead in drinking water is zero. An MCLG is the level of a contaminant in drinking water below which there is no known or expected risk to health. MCLGs allow for a margin of safety and are non-enforceable public health goals.

EPA does not have a Maximum Contaminant Level (MCL) for lead; the highest level of a contaminant that is allowed in drinking water. MCLs are set as close to MCLGs as feasible using the best available treatment technology and taking cost into consideration. MCLs are enforceable standards. Instead, EPA has a Treatment Technique (TT) action level that is a required process intended to reduce the level of a contaminant in drinking water by controlling the corrosiveness of water. The action level for lead is 0.015 mg/L or 15 µg/L; both signifying 15 parts per billion (ppb).

None of the 77 samples collected exceeded the EPA TT action level for lead in drinking water. The three sink faucets at MISD schools that exceeded the EPA MCLG are being replaced.


May 20, 2016 3 MISD

Background

The state of Washington Department of Health (DOH), Office of Drinking Water (ODW) is responsible for regulating more than 16,000 public water systems that serve drinking water to more than 5.5 million Washington residents. Information collected about those systems – for example, inspection reports, water sample results and source water protection information – is used for internal decision making. It is also reported to the federal EPA and shared with local health jurisdictions and various state agencies.

The amount of data collected is voluminous. From the 23,000 identified water sources supplying the 16,000 systems, 125,000 water samples are drawn, submitted and tested each year. There may be up to 100 test results retained on some of these samples. In 1986, just 23 potential contaminants were being monitored in these water supplies. Today, public water systems must monitor for 102 contaminants. Projected federal regulations will increase the number of contaminants to 130 by 2010.

The Consumer Confidence Report (CCR) federal rule 40 Code of Federal Regulation (CFR) 141 Subpart O was adopted as a state rule by Washington Administrative Code (WAC) Chapter 246-290 Part 7 Subpart B in June 2000. It became effective as a state requirement on August 21, 2000. This state regulation requires Group A community water systems to provide their customers with a report each year about the quality of water being served by the system. Group A water systems serve 15 or more connections or 25 or more people. MISD is not a Group A water system but rather relies on Seattle Public Utilities (SPU) as a Group A water system.

The State Board of Health has adopted revisions to WAC 246-366, Primary and Secondary Schools that includes a section requiring lead testing in drinking water. However, the new provisions of WAC 246-366 (titled WAC 246-366A) can't be implemented until funding is included in the legislative budget. Until funding is available, the previous version of the rule remains in effect and does NOT include lead testing.

Seattle Public Utilities

SPU is required to monitor drinking water for specific contaminants on a regular basis. Results of regular monitoring are an indicator of whether or not drinking water meets health standards. SPU monitoring results from 2014 and 2015 show that for those compounds that are detected, the levels are well below the safe limits established by federal and state agencies; a complete list of the 177 compounds tested is available from SPU, including unregulated contaminants. Sampling results are similar for current results which area available on SPU’s website.

Lead and copper monitoring by SPU has been performed to determine concentrations related to the distribution system. Sampling in 1992 and 1997 indicated a failure rate of


May 20, 2016 4 MISD

over 13% related to lead content (none of the 390 residences sampled failed copper testing). In response, SPU worked to make the drinking water less corrosive in order to reduce lead that comes from some types of plumbing materials in homes and businesses. Sampling in 2003 resulted in only 11 failures out of 375, clearly a reduction in the failure rate (2% verses 13%). SPU has not provided current failure rates, if any, on their website.

Scope of Work

The scope of work for this project is to determine the presence and concentration of lead in the drinking water at all MISD facilities. The results will indicate if there is a degradation problem in the water distribution system within the subject structures or if the contaminates are being transported into the property by the outside distribution system. The project will involve the collection of water samples from various locations within all of the MISD buildings.

Table 1 below documents the buildings within the District including address, date of construction and site names. A site map is included in Appendix A.

Table 1. MISD Schools and Buildings

Property Name Address Year Built*

Lakeridge Elementary School 8215 Southeast 78th 1954

Island Park Elementary School 5437 Island Crest Way 1958

West Mercer Elementary School 4141 81st Southeast 1964

Islander Middle School 8225 Southeast 72nd Street 1958

Crest Learning Center 4150 86th Avenue Southeast 1952

Mercer Island High School 9100 Southeast 42nd 1955

Administration Building 4160 86th Avenue Southeast 1966

Mary Wayte Pool 8815 Southeast 40th 1972

Maintenance, Operations & Transportation (MOT) Building

4140 86th Avenue Southeast 2009

*Year of initial construction, most buildings have been significantly renovated.

For this project only lead was tested; however, future water sampling will include other potential contaminants based on year of building construction and typical distribution


May 20, 2016 5 MISD

system components. Lead is a metallic element that is commonly found in red brass alloys used in faucet and drinking fountain fixtures of all types, as well as in lead-tin solder that was commonly used for joining copper plumbing pipes until 1992. Lead can enter tap water via chemical and physical interactions between the water and the supply system materials. Lead is not normally found in source water supplies; Seattle's water supply has virtually no lead. It is a regulated contaminant for health concerns.

Classroom units selected for sampling were chosen at random utilizing procedures from the National Institute of Occupational Safety and Health (NIOSH) “Occupational Exposure Sampling Strategy Manual” (report N0: NIOSH-77-173). Leidel, Nelson A., Busch, Kenneth A., and Lynch, Jeremiah R. Systems Control Inc. Palo Alto, CA. U.S. Department of Commerce, National Technical Information Service. Springfield, VA.

Sampling Procedures and Protocol

Field sampling was performed in accordance with EPA sampling protocols for collection of drinking water samples under the Lead and Copper Rule and in accordance with the “Drinking Water Sampling and Analysis Plan” provided by MTNW and dated May 2016.

Sampling Procedures

Initial Draw: Water was collected from drinking water sources at each school and/or facility. Sample locations were any faucet used for drinking or food preparation or a drinking fountain used by the personnel and/or students. After a stagnation period of 6-12 hours, a one-liter sample of water was collected immediately after opening the water outlet from the cold water supply. Samples were labeled with the sample number and closed with the supplied cap. Sample bottles were filled to the top of the bottle so that no or minimal air space was present when the bottle was closed. The location of outlet, the type of outlet, manufacturer and model and/or serial number (if available) of the outlet were recorded on the Initial Preliminary Report Form. The samples were then delivered to OnSite Environmental, Inc. (OnSite) for analysis.

Follow-Up Sampling: None of the samples exceeded EPA action levels for lead contaminates in drinking water and follow-up sampling was not performed.

Sampling and Preservation Requirements

Sample collection bottles were one (1) liter polyethylene. OnSite provided pre-preserved bottles to the MTNW sampling team. All the sample bottles were preserved with the correct amount of nitric acid (HNO3) to significantly keep the sample pH less than two.


May 20, 2016 6 MISD

Results

Table 2. Summary of Lead (Pb) Drinking Water Results

Sample ID# Sample Location Pb (mg/L)

Lakeridge Elementary School

8125.15-LE-001 Drinking fountain – multipurpose room ND

8125.15-LE-002 Kitchen sink faucet ND

8125.15-LE-003 Drinking fountain – hallway ND

8125.15-LE-004 Classroom 20 sink faucet ND

8125.15-LE-005 Classroom 23 sink bubbler ND


8125.15-LE-007 Staff room sink faucet ND

8125.15-LE-008 Drinking fountain – hallway ND





8125.15-LE-013 Portable 5 sink faucet ND

Island Park Elementary School

8125.15-IP-001 Kitchen sink faucet, left ND

8125.15-IP-002 Kitchen sink faucet, right 0.0058

8125.15-IP-003 Drinking fountain – multipurpose room ND

8125.15-IP-004 Classroom 19 sink bubbler ND

8125.15-IP-005 Classroom 19 sink faucet ND

8125.15-IP-006 Staff lounge sink faucet ND







8125.15-IP-013 Drinking fountain – hallway, left ND

8125.15-IP-014 Drinking fountain – hallway, right ND

West Mercer Elementary School

8125.15-WM-001 Drinking fountain – hallway ND


8125.15-WM-003 Staff break room sink faucet ND

8125.15-WM-004 Kitchen faucet, food prep sink ND

8125.15-WM-005 Classroom 20 sink bubbler ND

8125.15-WM-006 Classroom 20 sink faucet ND




May 20, 2016 7 MISD








8125.15-WM-015 Drinking fountain – exterior ND

Mary Wayte Pool

8125.15-MWP-001 Drinking fountain – pool area east ND

8125.15-MWP-002 Break room sink faucet ND

8125.15-MWP-003 Drinking fountain – pool area west ND

8125.15-MWP-004 Drinking fountain – lobby ND

Administration Building

8125.15-AB-001 Lower level staff kitchen faucet ND

8125.15-AB-002 Drinking fountain – lower level ND

8125.15-AB-003 Staff lounge sink faucet (room 116) ND

MOT Building

8125.15-MOT-001 Kitchen/drivers lounge sink faucet ND

Crest Learning Center

8125.15-CLC-001 Art room sink faucet (C-19) ND

8125.15-CLC-002 Kitchen sink faucet, island ND

8125.15-CLC-003 Kitchen sink faucet ND

8125.15-CLC-004 Drinking fountain ND

Islander Middle School

8125.15-IMS-001 Drinking fountain – hallway ND

8125.15-IMS-002 Classroom 108 sink faucet 0.0073

8125.15-IMS-003 Staff lounge sink faucet ND

8125.15-IMS-004 Drinking fountain – hallway ND

8125.15-IMS-005 Classroom 207 sink faucet 0.01

8125.15-IMS-006 Drinking fountain – 300 building ND

8125.15-IMS-007 Classroom 304 sink faucet ND

8125.15-IMS-008 Kitchen sink faucet ND

Mercer Island High School

8125.15-MIHS-001 Classroom 102 sink faucet ND


8125.15-MIHS-003 Drinking fountain – hallway ND

8125.15-MIHS-004 Kitchen sink faucet ND


8125.15-MIHS-006 Faculty lounge sink faucet ND

8125.15-MIHS-007 Admin area sink faucet ND

8125.15-MIHS-008 Drinking fountain – Commons area ND

8125.15-MIHS-009 Kitchen, east sink faucet ND


May 20, 2016 8 MISD


8125.15-MIHS-010 Kitchen, prep sink faucet - center ND

8125.15-MIHS-011 Kitchen, west sink north faucet ND





Laboratory Analytical Methods

Med-Tox Northwest collected a total of 77 water samples and delivered them to OnSite for analysis. Copies of the analytical results are included in Appendix B. OnSite is accredited by the Washington Department of Ecology (WDOE) for drinking water analysis, a copy of their certification are included in Appendix C. Table 3 details the EPA analytical method and the action level for the specific contaminant.

Table 3. Analyses and Methods

Test Analytical Method Action Levels

Lead EPA method 200.8 0.015 mg/L

mg/L=milligrams per liter

Drinking water sample locations are shown on drawings of each building or facility in Appendix D.

Conclusion and Recommendations

Most of the drinking fountains at MISD facilities are newer and do not have lead lined reservoirs. Additionally, renovations to older school facilities have replaced older fixtures and plumbing more likely to contribute to lead leaching into the drinking water.

MTNW has found that drinking water systems in the MISD facilities meet regulatory requirements for Group A water systems. The number of drinking outlets tested exceeds the Lead and Copper rule requirement for a school population of 10,000 which would require a minimum of 40 sample sites. MISD tested 77 sample sites as part of this sampling program.

MTNW recommends removal and replacement of the three faucets fixtures with detectable lead content even though they are below EPA’s action level. This recommendation is based on the EPA’s MCLG of zero for lead in drinking water. Follow-up sampling of the replaced fixtures should be performed to verify the fixtures were the source of the lead (based on the non-detect results of the other 74 samples it’s


May 20, 2016 9 MISD

unlikely the distribution system contributed to the low lead levels found in the three fixtures).

For an annual or semi-annual drinking water program, MTNW recommends following the testing requirements of WAC 246-366A; although, at a reduced percentage of fixtures until funding is approved by the legislature. WAC 246-366A requires the use of 250 ml sized containers so future sampling should use those sized containers which should allow your results to grandfather into MISD requirements. You should also include other heavy metals in representative samples and asbestos as the distribution system likely has cement asbestos water pipe.

Limitations

Med-Tox Northwest performed this sampling consistent with the level of care and skill ordinarily exercised by professionals currently practicing under similar conditions in the area. The sampling was conducted for the purpose of determining the presence or absence of lead in drinking water in the MISD facilities; Med-Tox Northwest did not sample every faucet or water outlet.

The services described in this report were performed consistent with generally accepted professional consulting principles and practices and in accordance with the practices and service scope elements recommended by the EPA. No other warranty, expressed or implied, is made. These services were performed consistently with our agreement with our client. This report is solely for the use and information of our client or as otherwise noted. Unauthorized use of this report is strictly prohibited and Med-Tox Northwest assumes no liability for such use.


May 20, 2016 A MISD

Appendix A Site Map


May 20, 2016 B MISD

Appendix B Analytical Results

OnSite Environmental, Inc. 14648 NE 95th

Street, Redmond, WA 98052 (425) 883-3881

This report pertains to the samples analyzed in accordance with the chain of custody, and is intended only for the use of the individual or company to whom it is addressed.

14648 NE 95

th Street, Redmond, WA 98052 • (425) 883-3881

May 12, 2016 Jon Havelock MED-TOX P.O. Box 1146 Auburn, WA 98071 Re: Analytical Data for Project E-8125.15 Laboratory Reference No. 1605-045 Dear Jon: Enclosed are the analytical results and associated quality control data for samples submitted on May 5, 2016. The standard policy of OnSite Environmental, Inc. is to store your samples for 30 days from the date of receipt. If you require longer storage, please contact the laboratory. We appreciate the opportunity to be of service to you on this project. If you have any questions concerning the data, or need additional information, please feel free to call me. Sincerely,

David Baumeister Project Manager Enclosures

2




Date of Report: May 12, 2016 Samples Submitted: May 5, 2016 Laboratory Reference: 1605-045 Project: E-8125.15

Case Narrative

Samples were collected on May 5, 2016 and received by the laboratory on May 5, 2016. They were maintained at the laboratory at a temperature of 2

oC to 6

oC.

Please note that any and all soil sample results are reported on a dry-weight basis, unless otherwise noted below. General QA/QC issues associated with the analytical data enclosed in this laboratory report will be indicated with a reference to a comment or explanation on the Data Qualifier page. More complex and involved QA/QC issues will be discussed in detail below.

3





DRINKING WATER LEAD EPA 200.8

Matrix: Water

Units: ug/L (ppb)

Date Date

Analyte Result PQL EPA Method Prepared Analyzed Flags

Lab ID: 05-045-01

Client ID: 8125.15-IP-001

Lead ND 5.0 200.8 5-5-16

Lab ID: 05-045-02


Lead 5.8 5.0 200.8 5-5-16

Lab ID: 05-045-03


Lead ND 5.0 200.8 5-5-16

Lab ID: 05-045-04


Lead ND 5.0 200.8 5-5-16

Lab ID: 05-045-05


Lead ND 5.0 200.8 5-5-16

Lab ID: 05-045-06


Lead ND 5.0 200.8 5-5-16

Lab ID: 05-045-07


Lead ND 5.0 200.8 5-5-16

4






Matrix: Water

Units: ug/L (ppb)

Date Date


Lab ID: 05-045-08


Lead ND 5.0 200.8 5-5-16

Lab ID: 05-045-09


Lead ND 5.0 200.8 5-5-16

Lab ID: 05-045-10


Lead ND 5.0 200.8 5-5-16

Lab ID: 05-045-11


Lead ND 5.0 200.8 5-5-16

Lab ID: 05-045-12


Lead ND 5.0 200.8 5-5-16

Lab ID: 05-045-13


Lead ND 5.0 200.8 5-5-16

Lab ID: 05-045-14


Lead ND 5.0 200.8 5-5-16

5






Matrix: Water

Units: ug/L (ppb)

Date Date


Lab ID: 05-045-15

Client ID: 8125.15-WM-01

Lead ND 5.0 200.8 5-5-16

Lab ID: 05-045-16


Lead ND 5.0 200.8 5-5-16

Lab ID: 05-045-17


Lead ND 5.0 200.8 5-5-16

Lab ID: 05-045-18


Lead ND 5.0 200.8 5-5-16

Lab ID: 05-045-19


Lead ND 5.0 200.8 5-5-16

Lab ID: 05-045-20


Lead ND 5.0 200.8 5-5-16

6






Matrix: Water

Units: ug/L (ppb)

Date Date


Lab ID: 05-045-21


Lead ND 5.0 200.8 5-6-16

Lab ID: 05-045-22


Lead ND 5.0 200.8 5-6-16

Lab ID: 05-045-23


Lead ND 5.0 200.8 5-6-16

Lab ID: 05-045-24


Lead ND 5.0 200.8 5-6-16

Lab ID: 05-045-25


Lead ND 5.0 200.8 5-6-16

Lab ID: 05-045-26


Lead ND 5.0 200.8 5-6-16

Lab ID: 05-045-27


Lead ND 5.0 200.8 5-6-16

7






Matrix: Water

Units: ug/L (ppb)

Date Date


Lab ID: 05-045-28


Lead ND 5.0 200.8 5-6-16

Lab ID: 05-045-29


Lead ND 5.0 200.8 5-6-16

Lab ID: 05-045-30

Client ID: 8125.15-LE-01

Lead ND 5.0 200.8 5-6-16

Lab ID: 05-045-31


Lead ND 5.0 200.8 5-6-16

Lab ID: 05-045-32


Lead ND 5.0 200.8 5-6-16

Lab ID: 05-045-33


Lead ND 5.0 200.8 5-6-16

Lab ID: 05-045-34


Lead ND 5.0 200.8 5-6-16

8






Matrix: Water

Units: ug/L (ppb)

Date Date


Lab ID: 05-045-35


Lead ND 5.0 200.8 5-6-16

Lab ID: 05-045-36


Lead ND 5.0 200.8 5-6-16

Lab ID: 05-045-37


Lead ND 5.0 200.8 5-6-16

Lab ID: 05-045-38


Lead ND 5.0 200.8 5-6-16

Lab ID: 05-045-39


Lead ND 5.0 200.8 5-6-16

Lab ID: 05-045-40


Lead ND 5.0 200.8 5-6-16

9






Matrix: Water

Units: ug/L (ppb)

Date Date


Lab ID: 05-045-41


Lead ND 5.0 200.8 5-5-16

Lab ID: 05-045-42


Lead ND 5.0 200.8 5-5-16

10






METHOD BLANK QUALITY CONTROL

Date Analyzed: 5-5-16

Matrix: Water

Units: ug/L (ppb)

Lab ID: MB0505DW1

Analyte Method Result PQL

Lead 200.8 ND 5.0

11








Matrix: Water

Units: ug/L (ppb)

Lab ID: MB0505DW2


Lead 200.8 ND 5.0

12








Matrix: Water

Units: ug/L (ppb)

Lab ID: MB0506DW2


Lead 200.8 ND 5.0

13






DUPLICATE QUALITY CONTROL


Matrix: Water

Units: ug/L (ppb)

Lab ID: 05-040-01

Sample Duplicate

Analyte Result Result RPD PQL Flags

Lead ND ND NA 5.0

14








Matrix: Water

Units: ug/L (ppb)

Lab ID: 05-045-01

Sample Duplicate


Lead ND ND NA 5.0

15








Matrix: Water

Units: ug/L (ppb)

Lab ID: 05-045-21

Sample Duplicate


Lead ND ND NA 5.0

16






MS/MSD QUALITY CONTROL


Matrix: Water

Units: ug/L (ppb)

Lab ID: 05-040-01

Spike Percent Percent

Analyte Level MS Recovery MSD Recovery RPD Flags

Lead 400 386 96 386 96 0

17








Matrix: Water

Units: ug/L (ppb)

Lab ID: 05-045-01



Lead 400 379 95 377 94 1

18








Matrix: Water

Units: ug/L (ppb)

Lab ID: 05-045-21



Lead 400 417 104 370 92 12

19




Data Qualifiers and Abbreviations

A - Due to a high sample concentration, the amount spiked is insufficient for meaningful MS/MSD recovery data. B - The analyte indicated was also found in the blank sample.

C - The duplicate RPD is outside control limits due to high result variability when analyte concentrations are

within five times the quantitation limit. E - The value reported exceeds the quantitation range and is an estimate. F - Surrogate recovery data is not available due to the high concentration of coeluting target compounds. H - The analyte indicated is a common laboratory solvent and may have been introduced during sample

preparation, and be impacting the sample result. I - Compound recovery is outside of the control limits. J - The value reported was below the practical quantitation limit. The value is an estimate. K - Sample duplicate RPD is outside control limits due to sample inhomogeneity. The sample was re-extracted and re-analyzed with similar results. L - The RPD is outside of the control limits. M - Hydrocarbons in the gasoline range are impacting the diesel range result. M1 - Hydrocarbons in the gasoline range (toluene-napthalene) are present in the sample. N - Hydrocarbons in the lube oil range are impacting the diesel range result. N1 - Hydrocarbons in diesel range are impacting lube oil range results. O - Hydrocarbons indicative of heavier fuels are present in the sample and are impacting the gasoline result. P - The RPD of the detected concentrations between the two columns is greater than 40. Q - Surrogate recovery is outside of the control limits. S - Surrogate recovery data is not available due to the necessary dilution of the sample. T - The sample chromatogram is not similar to a typical ____________. U - The analyte was analyzed for, but was not detected above the reported sample quantitation limit. U1 - The practical quantitation limit is elevated due to interferences present in the sample. V - Matrix Spike/Matrix Spike Duplicate recoveries are outside control limits due to matrix effects. W - Matrix Spike/Matrix Spike Duplicate RPD are outside control limits due to matrix effects. X - Sample extract treated with a mercury cleanup procedure. X1- Sample extract treated with a Sulfuric acid/Silica gel cleanup procedure. Y - The calibration verification for this analyte exceeded the 20% drift specified in method 8260C, and therefore the

reported result should be considered an estimate. The overall performance of the calibration verification standard met the acceptance criteria of the method.

Z - ND - Not Detected at PQL PQL - Practical Quantitation Limit RPD - Relative Percent Difference




14648 NE 95

th Street, Redmond, WA 98052 (425) 883-3881

May 12, 2016 Jon Havelock MED-TOX P.O. Box 1146 Auburn, WA 98071 Re: Analytical Data for Project 8125.15 Laboratory Reference No. 1605-061 Dear Jon: Enclosed are the analytical results and associated quality control data for samples submitted on May 6, 2016. The standard policy of OnSite Environmental, Inc. is to store your samples for 30 days from the date of receipt. If you require longer storage, please contact the laboratory. We appreciate the opportunity to be of service to you on this project. If you have any questions concerning the data, or need additional information, please feel free to call me. Sincerely,

David Baumeister Project Manager Enclosures

2




Date of Report: May 12, 2016 Samples Submitted: May 6, 2016 Laboratory Reference: 1605-061 Project: 8125.15

Case Narrative

Samples were collected on May 6, 2016 and received by the laboratory on May 6, 2016. They were maintained at the laboratory at a temperature of 2

oC to 6

oC.

Please note that any and all soil sample results are reported on a dry-weight basis, unless otherwise noted below. General QA/QC issues associated with the analytical data enclosed in this laboratory report will be indicated with a reference to a comment or explanation on the Data Qualifier page. More complex and involved QA/QC issues will be discussed in detail below.

3






Matrix: Water

Units: ug/L (ppb)

Date Date


Lab ID: 05-061-01

Client ID: 8125.15-IM-001

Lead ND 5.0 200.8 5-6-16

Lab ID: 05-061-02


Lead 7.3 5.0 200.8 5-6-16

Lab ID: 05-061-03


Lead ND 5.0 200.8 5-6-16

Lab ID: 05-061-04


Lead ND 5.0 200.8 5-6-16

Lab ID: 05-061-05


Lead 10 5.0 200.8 5-6-16

Lab ID: 05-061-06


Lead ND 5.0 200.8 5-6-16

Lab ID: 05-061-07


Lead ND 5.0 200.8 5-6-16

4






Matrix: Water

Units: ug/L (ppb)

Date Date


Lab ID: 05-061-08


Lead ND 5.0 200.8 5-6-16

Lab ID: 05-061-09

Client ID: 8125.15-MWP-001

Lead ND 5.0 200.8 5-6-16

Lab ID: 05-061-10


Lead ND 5.0 200.8 5-6-16

Lab ID: 05-061-11


Lead ND 5.0 200.8 5-6-16

Lab ID: 05-061-12


Lead ND 5.0 200.8 5-6-16

Lab ID: 05-061-13

Client ID: 8125.15-MOT-001

Lead ND 5.0 200.8 5-6-16

Lab ID: 05-061-14

Client ID: 8125.15-AB-001

Lead ND 5.0 200.8 5-6-16

5






Matrix: Water

Units: ug/L (ppb)

Date Date


Lab ID: 05-061-15


Lead ND 5.0 200.8 5-6-16

Lab ID: 05-061-16


Lead ND 5.0 200.8 5-6-16

Lab ID: 05-061-17

Client ID: 8125.15-CLC-001

Lead ND 5.0 200.8 5-6-16

Lab ID: 05-061-18


Lead ND 5.0 200.8 5-6-16

Lab ID: 05-061-19


Lead ND 5.0 200.8 5-6-16

Lab ID: 05-061-20


Lead ND 5.0 200.8 5-6-16

6






Matrix: Water

Units: ug/L (ppb)

Date Date


Lab ID: 05-061-21

Client ID: 8125.15-MIHS-001

Lead ND 5.0 200.8 5-6-16

Lab ID: 05-061-22


Lead ND 5.0 200.8 5-6-16

Lab ID: 05-061-23


Lead ND 5.0 200.8 5-6-16

Lab ID: 05-061-24


Lead ND 5.0 200.8 5-6-16

Lab ID: 05-061-25


Lead ND 5.0 200.8 5-6-16

Lab ID: 05-061-26


Lead ND 5.0 200.8 5-6-16

Lab ID: 05-061-27


Lead ND 5.0 200.8 5-6-16

7






Matrix: Water

Units: ug/L (ppb)

Date Date


Lab ID: 05-061-28


Lead ND 5.0 200.8 5-6-16

Lab ID: 05-061-29


Lead ND 5.0 200.8 5-6-16

Lab ID: 05-061-30


Lead ND 5.0 200.8 5-6-16

Lab ID: 05-061-31


Lead ND 5.0 200.8 5-6-16

Lab ID: 05-061-32


Lead ND 5.0 200.8 5-6-16

Lab ID: 05-061-33


Lead ND 5.0 200.8 5-6-16

Lab ID: 05-061-34


Lead ND 5.0 200.8 5-6-16

8






Matrix: Water

Units: ug/L (ppb)

Date Date


Lab ID: 05-061-35


Lead ND 5.0 200.8 5-6-16

9








Matrix: Water

Units: ug/L (ppb)

Lab ID: MB0506DW3


Lead 200.8 ND 5.0

10








Matrix: Water

Units: ug/L (ppb)

Lab ID: MB0506DW4


Lead 200.8 ND 5.0

11








Matrix: Water

Units: ug/L (ppb)

Lab ID: 05-061-01

Sample Duplicate


Lead ND ND NA 5.0

12








Matrix: Water

Units: ug/L (ppb)

Lab ID: 05-061-21

Sample Duplicate


Lead ND ND NA 5.0

13








Matrix: Water

Units: ug/L (ppb)

Lab ID: 05-061-01



Lead 400 388 97 394 99 2

14








Matrix: Water

Units: ug/L (ppb)

Lab ID: 05-061-21



Lead 400 380 95 386 97 2

15




Data Qualifiers and Abbreviations

A - Due to a high sample concentration, the amount spiked is insufficient for meaningful MS/MSD recovery data. B - The analyte indicated was also found in the blank sample.

C - The duplicate RPD is outside control limits due to high result variability when analyte concentrations are

within five times the quantitation limit. E - The value reported exceeds the quantitation range and is an estimate. F - Surrogate recovery data is not available due to the high concentration of coeluting target compounds. H - The analyte indicated is a common laboratory solvent and may have been introduced during sample

preparation, and be impacting the sample result. I - Compound recovery is outside of the control limits. J - The value reported was below the practical quantitation limit. The value is an estimate. K - Sample duplicate RPD is outside control limits due to sample inhomogeneity. The sample was re-extracted and re-analyzed with similar results. L - The RPD is outside of the control limits. M - Hydrocarbons in the gasoline range are impacting the diesel range result. M1 - Hydrocarbons in the gasoline range (toluene-napthalene) are present in the sample. N - Hydrocarbons in the lube oil range are impacting the diesel range result. N1 - Hydrocarbons in diesel range are impacting lube oil range results. O - Hydrocarbons indicative of heavier fuels are present in the sample and are impacting the gasoline result. P - The RPD of the detected concentrations between the two columns is greater than 40. Q - Surrogate recovery is outside of the control limits. S - Surrogate recovery data is not available due to the necessary dilution of the sample. T - The sample chromatogram is not similar to a typical ____________. U - The analyte was analyzed for, but was not detected above the reported sample quantitation limit. U1 - The practical quantitation limit is elevated due to interferences present in the sample. V - Matrix Spike/Matrix Spike Duplicate recoveries are outside control limits due to matrix effects. W - Matrix Spike/Matrix Spike Duplicate RPD are outside control limits due to matrix effects. X - Sample extract treated with a mercury cleanup procedure. X1- Sample extract treated with a Sulfuric acid/Silica gel cleanup procedure. Y - The calibration verification for this analyte exceeded the 20% drift specified in method 8260C, and therefore the

reported result should be considered an estimate. The overall performance of the calibration verification standard met the acceptance criteria of the method.

Z - ND - Not Detected at PQL PQL - Practical Quantitation Limit RPD - Relative Percent Difference


May 20, 2016 C MISD

Appendix C OnSite Laboratory Accreditation


May 20, 2016 D MISD

Appendix D Sample Location Drawings

Mercer Island School District Buildings Mercer Island ...€¦ · Mercer Island School District...

Documents

Transcript of Mercer Island School District Buildings Mercer Island ...€¦ · Mercer Island School District...