TETRA TECH, INC. April 11, 2014

Transcription

1 TETRA TECH, INC. April 11, 2014 Greg Haet EH&S Associate Director, Environmental Protection Office of Environment, Health & Safety University of California, Berkeley University Hall, 3rd Floor #1150 Berkeley, CA Subject: Sampling Results for Western Stege Marsh Near-Surface Sediment Samples, February 27, 2014, Sampling Event University of California, Berkeley, Richmond Field Station, Richmond, California Dear Mr. Haet: Tetra Tech, Inc. (Tetra Tech), was contracted by the University of California (UC) Berkeley to conduct sampling at the Richmond Field Station (RFS), in Richmond, California. The objective of the sampling effort was to characterize near-surface sediment in remediated portions of the Western Stege Marsh, as well as to evaluate incidental sediment contact by marsh restoration workers. This sampling event, conducted on February 27, 2014, replicates the near-surface sediment sampling conducted in January 2008, February 2009, February 2010, February 2011, February 2012, and February This letter provides the rationale for the selected sampling locations, a summary of field sampling protocols, and sample results. A figure showing the sampling locations is presented at the end of this letter. Complete analytical results are presented in Attachment 1. Sample Locations Incremental sampling methodology (ISM) (previously referred to as multi-incremental ) sampling was selected for this project to provide a comprehensive and thorough evaluation of chemical concentrations in a specific area of potential exposure, or decision unit. The ISM sampling strategy for this project was based on selecting a decision unit to best represent potential exposure by workers involved in restoration activities within remediated marsh areas. In January 2008, UC Berkeley provided Tetra Tech with site-specific boundaries of the areas where marsh restoration activities may be performed. Based on this information, one decision unit, identified as Western Stege Marsh Decision Unit 1, was identified to evaluate possible exposure areas within remediated portions of the marsh under this sampling activity. This decision unit was sampled in January 2008, February 2009, February 2010, February 2011, February 2012, February 2013, and during this event on February 27, The location and extent of the Western Stege Marsh Decision Unit 1 are presented on the figure at the end of this sampling letter. The decision unit encompassed an area recommended for sampling by the March 13, 2008, Agency for Toxic Substances and Disease Registry 1999 Harrison Street, Suite 500, Oakland, CA Tel Fax

2 Mr. Greg Haet April 11, 2014 Page 2 of 3 (ATSDR) and California Department of Public Health Public Health Assessment (PHA) Evaluation of Exposure to Contaminants at the University of California, Berkeley, Richmond Field Station. The PHA concluded that there was an unknown potential health risk to marsh restoration workers posed by recontamination of sediment in the remediated marsh. Surface samples at depths of 0 to 2 inches below ground surface (bgs) were collected because the decision unit is intended to characterize near-surface soils. The rationale for this sampling interval is that the sediment which workers may be exposed to during planting or weeding on the marsh plain. The near-surface sediment also represents any sediment that may be migrating within slough channels and being deposited on top of clean Bay Mud used as backfill in 2002 to Two previous sampling events were conducted in this decision unit in 2005 and 2006 using a discrete sampling methodology. Field Sampling Protocols The near-surface sediment sample was collected on February 27, The decision unit was identified in the field based on the description above and consistent with previous sampling events. One ISM surface soil sample was collected from the decision unit. The ISM soil sample consisted of 50 subsamples, or increment locations, collected from 0 to 2 inches bgs. The ISM sampling technique was used to obtain sufficient near-surface soft sediments from the decision unit to account for both compositional and distributional heterogeneity of any possible contamination. The sampling protocol followed these steps: 1. The field sampler began at a corner of the decision unit and sampled in an orthogonal pattern, moving from north to south to collect subsamples from 50 locations with the decision unit. The location of these subsamples was not critical as long as they were distributed throughout the decision unit. The subsamples were collected using one disposable trowel for the decision unit. 2. The 50 subsamples were placed into a clean, unused Ziploc bag as they were collected and mixed to form one composited ISM sample. 3. The sediment from the bag was then redistributed into a 1-inch-thick uniform layer on a clean, stainless steel baking pan. 4. Fifty incremental subsamples of the soil were randomly collected from across the uniform layer described in Step 3 using a disposable spoon and placed in the sample containers provided by the laboratory to form the final sample that was submitted to the analytical laboratory for the analyses listed below. After the samples had been collected, the sample jar was labeled, wrapped with protective bubble wrap material, and placed into a sealable plastic bag. A copy of the chain-of-custody form is presented in Attachment 1. The sample was immediately delivered to Curtis and Tompkins, Ltd., in Berkeley, California, after the sampling event, on February 27, Harrison Street, Suite 500, Oakland, CA Tel Fax

3 Mr. Greg Haet April 11, 2014 Page 3 of 3 Sample Results The sample was submitted for analysis of metals, pesticides, and polychlorinated biphenyls (PCB) using the methods listed below. Preparation of Sample: U.S. Environmental Protection Agency (EPA) Methods 3665A and 3050B Metals by EPA Method 6010; Mercury by EPA 7471A Pesticide analysis by EPA Method 8081A PCB analysis by EPA Method 8082 Sample results are presented below along with California Human Health Screening Levels (CHHSL) ( Use of California Human Health Screening Levels [CHHSLs] in Evaluation of Contaminated Properties California Environmental Protection Agency, January 2005). All organic constituents were reported at concentrations less than the laboratory reporting limits or less than their commercial/industrial screening levels. All metals analyzed for were detected; only arsenic was reported at a concentration exceeding its background (16 milligrams per kilogram [mg/kg], as established by the Department of Toxic Substances Control [DTSC] for RFS and the Campus Bay site) or commercial/industrial screening level. A summary of the sampling results is presented in the tables following this letter. The February 2014 sampling results were compared with the 2008 through 2013 sampling results from the same decision unit, as well as with averages from discrete samples collected from the same area during sampling events in 2005 and The analytical results from the 2014 sampling event are very similar to the previously collected data; no trends have been identified. If you have any questions or comments regarding this submittal, please call me at (510) Sincerely, Jason Brodersen, P.G. Project Manager Enclosures: Analytical Summary Tables Sample Location Figure Attachment 1: Analytical Results 1999 Harrison Street, Suite 500, Oakland, CA Tel Fax

4 POLYCHLORINATED BIPHENYLS (PCB) RESULTS REPORTED IN MILLIGRAMS PER KILOGRAM (mg/kg) Sample Location CHHSL Residential CHHSL Commercial Aroclor PCBs (1) Aroclor Aroclor WSM 16 discrete sample mean* March 1, a 0.14 a WSM 30 discrete sample mean * June 13, c ND d WSM DU1-001 January 17, J WSM DU1-002 February 4, WSM DU1-003 February 18, J WSM DU1-004 February 22, U U U WSM DU1-005 February 3, U WSM DU1-006 February 4, U U U WSM DU1-007 February 27, U 0.03 J Notes: a Thirteen detections b Eleven detections c Nineteen detections d Twelve detections CHHSL California human health screening level J Estimated Value ND Not detected U Not detected (1) All other PCBs not detected * For detect-only data, the mean is the arithmetic mean. For chemicals with non-detect measurements, this value is the arithmetic mean with one-half the detection limit substituted for non-detect measurements.

5 PESTICIDE RESULTS REPORTED IN MILLIGRAMS PER KILOGRAM (mg/kg) Pesticides (1) Sample Location Aldrin Heptachlor expoxide Endosulfan I Dieldrin Endrin Endosulfan sulfate 4,4 -DDD 4,4 -DDE 4,4 -DDT Alpha- Chlordane Gamma- Chlordane Methoxychlor CHHSL Residential CHHSL Commercial NA NA WSM 16 discrete sample mean* March 1, 2005 NA NA NA NA NA NA NA NA NA NA NA NA WSM 30 discrete sample mean * June 13, 2006 NA NA NA NA NA NA NA NA NA NA NA NA WSM DU1-001 January 17, U U U U U U U U U U U 0.17 U WSM DU1-002 February 4, U U U 0.12 U 0.12 U 0.12 U 0.12 U 0.12 U 0.12 U U U 0.60 U WSM DU1-003 February 18, U U U U U U U U U U U 0.32 U WSM DU1-004 February 22, CJ CJ UJ CJ CJ UJ UJ U CJ UJ U UJ WSM DU1-005 February 3, CJ J U U U U J CJ CJ CJ CJ 0.06 U WSM DU1-006 February 4, U U U U U U U U U U U 0.17 U WSM DU1-007 February 27, U CJ U U U U U U U U U 0.37 U Notes: C Relative percent difference between columns exceeds 40% CHHSL California human health screening level J Estimated Value NA Not available samples collected in 2005 and 2006 were not analyzed for pesticides. U Not detected (method blank contamination) (1) All other pesticides were not detected. NA NA ,800

6 METALS RESULTS REPORTED IN MILLIGRAMS PER KILOGRAM (mg/kg) Metals Sample Location Aluminum Antimony Arsenic (1) Barium Beryllium Cadmium Calcium Chromium Cobalt Copper Iron Lead Magnesium Manganese Mercury Molybdenum Nickel Potassium Selenium Silver Sodium Thallium Vanadium Zinc CHHSL Residential CHHSL Commercial Background NA NA ,200 63, NA NA 100, , ,200 3,000 38,000 NA NA WSM 16 discrete sample mean* March 1, 2005 NA ND 55.7 ND a NA ND 118 NA NA NA 2.59 ND NA 1.15 b ND NA ND ND 276 WSM 30 discrete sample mean * June 13, 2006 NA 6.2 c d NA NA 82.1 NA NA e 81.4 NA 1.03 f 0.29 g NA 0.51 f WSM DU1-001 January 17, , J 2, , , U 69 3, U 0.50 U 8, U WSM DU1-002 February 4, , U 0.52 J 2, , , , J 0.89 U 30, U WSM DU1-003 February 18, , J 3, , , J 73 4, J 0.96 U 21, U WSM DU1-004 February 22, , J 3, , , , U 0.34 J 23, U WSM DU1-005 February 3, , J J 0.49 J 3, , , , J 22, J WSM DU1-006 February 4, , U J 3, , , , U 0.43 J 14, U WSM DU1-007 February 27, , J 0.93 J 3, , , , J 22, J Notes: CHHSL California human health screening level NA Not available ND Not detected J Estimated Value U Not detected (1) Arsenic screening value based on DTSC-approved ambient concentration developed for the adjacent Campus Bay site. a Fifteen detections b Eight detections c Eleven detections d Twenty-two detections e Twenty-six detections f Only thirteen detections g Two detections * For detect-only data, the mean is the arithmetic mean. For chemicals with non-detect measurements, this value is the arithmetic mean with one-half the detection limit substituted for non-detect measurements NA NA NA NA ,800 1,600 16,000 NA NA ,800 NA NA ,700 23, ,000

7 !!!!!!!!!!!! Decision Unit Boundaries (approximate)!!!! Biologically Active Permeable Barrier Wall!!!! Multi-Increment Sampling Locations (approximate)!!!!!!!!!!!!!!!!!!!!!!!! Note: Image date March 2008, courtesy of Muir Consulting!!! ! E B R P D B A Y T R A I L Feet!!! RFS CONNECTOR TRAIL Richmond Field Station University of California, Berkeley WESTERN STEGE MARSH NEAR SURFACE SAMPLING AREA V:\Misc_GIS\Richmond_Field_Station\Projects\Coastal_Prairie_Sampling\WSM.mxd TtEMI-OAK CF

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9 Laboratory Job Number ANALYTICAL REPORT Pesticides Tetra Tech EMI Project : STANDARD 1999 Harrison Street Location : WSM PHA Sampling Oakland, CA Level : IV Sample ID Lab ID WSMDUI This data package has been reviewed for technical correctness and completeness. Release of this data has been authorized by the Laboratory Manager or the Manager's designee, as verified by the following signature. The results contained in this report meet all requirements of NELAC and pertain only to those samples which were submitted for analysis. This report may be reproduced only in its entirety. Signature: Date: 03/18/2014 Mike J. Dahlquist Project Manager mike.dahlquist@ctberk.com CA ELAP# 2896, NELAP# of 191

10 CASE NARRATIVE PESTICIDES (EPA 8081A) Laboratory number: Client: Tetra Tech EMI Location: WSM PHA Sampling Request Date: 02/27/14 Samples Received: 02/27/14 This data package contains sample and QC results for one soil sample, requested for the above referenced project on 02/27/14. See attached cooler receipt form for any sample receipt problems or discrepancies. Pesticides (EPA 8081A): All samples underwent sulfur cleanup using the copper option in EPA Method 3660B. All samples underwent florisil cleanup using EPA Method 3620C. Low response was observed for endrin in the ICV analyzed 03/03/14 21:34; average ICV drift met method requirements, and this analyte was not detected at or above the RL in the associated samples. High responses were observed for 4,4'-DDD and dieldrin in the CCV analyzed 03/05/14 03:30; average CCV drift met method requirements, and these analytes were not detected at or above the RL in the associated samples. High response was observed for dieldrin in the CCV analyzed 03/04/14 22:32; average CCV drift met method requirements, and this analyte was not detected at or above the RL in the associated samples. High response was observed for endosulfan sulfate in the CCV analyzed 03/04/14 22:32; average CCV drift met method requirements, and this analyte was not detected at or above the RL in the associated sample. Matrix spikes QC729727,QC (batch ) were not reported because the parent sample required a dilution that would have diluted out the spikes. WSMDUI-007 (lab # ) was diluted due to the color of the sample extract. No other analytical problems were encountered. Page 1 of of 191

11 Chain of Custody 3 of 191

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14 Results & QC Summary 6 of 191

15 Organochlorine Pesticides Lab #: Location: WSM PHA Sampling Client: Tetra Tech EMI Prep: EPA 3550B Project#: STANDARD Analysis: EPA 8081A Field ID: WSMDUI-007 Batch#: Lab ID: Sampled: 02/27/14 Matrix: Soil Received: 02/27/14 Units: ug/kg Prepared: 03/03/14 Basis: dry Analyzed: 03/05/14 Diln Fac: Moisture: 77% Analyte Result RL MDL alpha-bhc ND beta-bhc ND gamma-bhc ND delta-bhc ND Heptachlor ND Aldrin ND Heptachlor epoxide 9.5 C J Endosulfan I ND Dieldrin ND ,4'-DDE ND Endrin ND Endosulfan II ND Endosulfan sulfate ND ,4'-DDD ND Endrin aldehyde ND ,4'-DDT ND alpha-chlordane ND gamma-chlordane ND Methoxychlor ND Toxaphene ND 1, Surrogate %REC Limits TCMX Decachlorobiphenyl C= Presence confirmed, but RPD between columns exceeds 40% J= Estimated value ND= Not Detected at or above MDL RL= Reporting Limit MDL= Method Detection Limit Page 1 of of 191

16 Batch QC Report Organochlorine Pesticides Lab #: Location: WSM PHA Sampling Client: Tetra Tech EMI Prep: EPA 3550B Project#: STANDARD Analysis: EPA 8081A Type: BLANK Diln Fac: Lab ID: QC Batch#: Matrix: Soil Prepared: 03/03/14 Units: ug/kg Analyzed: 03/04/14 Analyte Result RL MDL alpha-bhc ND beta-bhc ND gamma-bhc ND delta-bhc ND Heptachlor ND Aldrin ND Heptachlor epoxide ND Endosulfan I ND Dieldrin ND ,4'-DDE ND Endrin ND Endosulfan II ND Endosulfan sulfate ND ,4'-DDD ND Endrin aldehyde ND ,4'-DDT ND alpha-chlordane ND gamma-chlordane ND Methoxychlor ND Toxaphene ND Surrogate %REC Limits TCMX Decachlorobiphenyl ND= Not Detected at or above MDL RL= Reporting Limit MDL= Method Detection Limit Page 1 of of 191

17 Batch QC Report Organochlorine Pesticides Lab #: Location: WSM PHA Sampling Client: Tetra Tech EMI Prep: EPA 3550B Project#: STANDARD Analysis: EPA 8081A Type: LCS Diln Fac: Lab ID: QC Batch#: Matrix: Soil Prepared: 03/03/14 Units: ug/kg Analyzed: 03/04/14 Analyte Spiked Result %REC Limits gamma-bhc Heptachlor Aldrin Dieldrin # Endrin ,4'-DDT Surrogate %REC Limits TCMX Decachlorobiphenyl #= CCV drift outside limits; average CCV drift within limits per method requirements Page 1 of of 191

18 Confirmation Report for PEST Soil Curtis & Tompkins Laboratories Units: ug/kg Lab ID Client ID Analyte Result Confirmation RPD %D WSMDUI-007 Heptachlor epoxide J C C=RPD between columns exceeds 40% J=estimated Page 1 of 1 10 of 191

19 CURTIS & TOMPKINS INITIAL CALIBRATION FOR PEST Soil: EPA 8081A Inst : GC21 Name : GC21_Pest_062 Calnum : Date : 03-MAR :22 Units : pg/ul Level File Seqnum Sample ID Analyzed Stds L1 062_ ISOPEST_1/2 03-MAR :22 S24164 (2X) L2 062_ ISOPEST_1 03-MAR :43 S24164 L3 062_ ISOPEST_2 03-MAR :04 S24165 L4 062_ ISOPEST_3 03-MAR :26 S24166 L5 062_ ISOPEST_4 03-MAR :47 S24167 L6 062_ ISOPEST_5 03-MAR :08 S24168 L7 062_ ISOPEST_6 03-MAR :30 S24169 L8 062_ ISOPEST_7 03-MAR :51 S24170 r^2 Analyte Ch L1 L2 L3 L4 L5 L6 L7 L8 Type X a0 a1 a2 Avg %RSD MnR^2 MxRSD Flg alpha-bhc A AVRG R 3.29E gamma-bhc A AVRG R 3.75E beta-bhc A AVRG R 9.84E delta-bhc A AVRG R 4.02E Heptachlor A AVRG R 4.39E Aldrin A AVRG R 4.26E Heptachlor epoxide A AVRG R 4.77E gamma-chlordane A AVRG R 4.79E alpha-chlordane A AVRG R 4.96E ,4'-DDE A AVRG R 5.19E Endosulfan I A AVRG R 5.12E Dieldrin A AVRG R 5.08E Endrin A AVRG R 7.37E ,4'-DDD A AVRG R 6.68E Endosulfan II A AVRG R 6.41E ,4'-DDT A QUAD A Endrin aldehyde A AVRG R 8.61E Methoxychlor A QUAD A Endosulfan sulfate A AVRG R 7.82E TCMX A AVRG R 4.93E Decachlorobiphenyl A AVRG R 9.67E alpha-bhc B AVRG R 7.32E gamma-bhc B AVRG R 7.23E beta-bhc B AVRG R 1.81E delta-bhc B AVRG R 8.35E Page 1 of of 191

20 r^2 Analyte Ch L1 L2 L3 L4 L5 L6 L7 L8 Type X a0 a1 a2 Avg %RSD MnR^2 MxRSD Flg Heptachlor B AVRG R 6.51E Aldrin B AVRG R 7.92E Heptachlor epoxide B AVRG R 8.42E gamma-chlordane B AVRG R 8.33E alpha-chlordane B AVRG R 8.92E ,4'-DDE B AVRG R 9.28E Endosulfan I B AVRG R 9.08E Dieldrin B AVRG R 8.99E Endrin B AVRG R 1.34E ,4'-DDD B AVRG R 1.30E Endosulfan II B AVRG R 1.20E ,4'-DDT B AVRG R 1.25E Endrin aldehyde B AVRG R 1.70E Methoxychlor B AVRG R 3.30E Endosulfan sulfate B AVRG R 1.41E TCMX B AVRG R 1.82E Decachlorobiphenyl B AVRG R 1.61E Average EPA 8081A A (n=23) Average EPA 8081A B (n=23) Page 2 of of 191

21 Spiked Amounts / Drifts Ch L1 %D L2 %D L3 %D L4 %D L5 %D L6 %D L7 %D L8 %D alpha-bhc A gamma-bhc A beta-bhc A delta-bhc A Heptachlor A Aldrin A Heptachlor epoxide A gamma-chlordane A alpha-chlordane A ,4'-DDE A Endosulfan I A Dieldrin A Endrin A ,4'-DDD A Endosulfan II A ,4'-DDT A Endrin aldehyde A Methoxychlor A Endosulfan sulfate A TCMX A Decachlorobiphenyl A alpha-bhc B gamma-bhc B beta-bhc B delta-bhc B Heptachlor B Aldrin B Heptachlor epoxide B gamma-chlordane B alpha-chlordane B ,4'-DDE B Endosulfan I B Dieldrin B Endrin B ,4'-DDD B Endosulfan II B ,4'-DDT B Endrin aldehyde B Methoxychlor B Endosulfan sulfate B TCMX B Decachlorobiphenyl B Page 3 of of 191

22 MAW 03/04/14 : Corrected automatically drawn baseline in all levels. MAW 03/04/14 : Dropped various low and high points and adjusted curve fits for RSD and R^2 values within acceptable limits Analyst: MAW Date: 03/04/14 Reviewer: EAH Date: 03/04/14 X=A: Instrument response = a0 + amount * a1 + amount^2 * a2 (invert equation before quantitating); X=R: Instrument amount = a0 + response * a1 + response^2 * a2; AVRG=Average response factor; QUAD=Quadratic regression Page 4 of of 191

23 CURTIS & TOMPKINS 2ND SOURCE CALIBRATION SUMMARY FOR PEST Soil EPA 8081A Inst : GC21 Name : GC21_Pest_062 Calnum : Cal Date : 03-MAR-2014 ICV (062_ MAR-2014) stds: S23571 Analyte Ch Spiked Quant Units %D Max Flags alpha-bhc A pg/ul gamma-bhc A pg/ul beta-bhc A pg/ul delta-bhc A pg/ul 0 15 Heptachlor A pg/ul Aldrin A pg/ul Heptachlor epoxide A pg/ul gamma-chlordane A pg/ul alpha-chlordane A pg/ul ,4'-DDE A pg/ul 0 15 Endosulfan I A pg/ul Dieldrin A pg/ul 0 15 Endrin A pg/ul v- 4,4'-DDD A pg/ul Endosulfan II A pg/ul ,4'-DDT A pg/ul Endrin aldehyde A pg/ul Methoxychlor A pg/ul 2 15 Endosulfan sulfate A pg/ul alpha-bhc B pg/ul gamma-bhc B pg/ul beta-bhc B pg/ul delta-bhc B pg/ul Heptachlor B pg/ul Aldrin B pg/ul Heptachlor epoxide B pg/ul gamma-chlordane B pg/ul alpha-chlordane B pg/ul ,4'-DDE B pg/ul Endosulfan I B pg/ul Dieldrin B pg/ul Endrin B pg/ul v- 4,4'-DDD B pg/ul Endosulfan II B pg/ul ,4'-DDT B pg/ul Endrin aldehyde B pg/ul 0 15 Methoxychlor B pg/ul 1 15 Endosulfan sulfate B pg/ul Average EPA 8081A A n= Average EPA 8081A B n= Analyst: MAW Date: 03/04/14 Reviewer: EAH Date: 03/04/14 -=low bias v=icv Page 1 of ICVs 15 of 191

24 CURTIS & TOMPKINS PERFORMANCE EVALUATION FOR PEST Soil EPA 8081A Inst : GC21 Run Name : PEM IDF : 1.0 Seqnum : File : 062_021 Time : 03-MAR :39 Standards: S24117 Analyte Ch Area % Breakdown Limit Flags 4,4'-DDT A ,4'-DDE A 694 4,4'-DDD A 5695 Endrin A Endrin aldehyde A 1662 Endrin ketone A 812 4,4'-DDT B ,4'-DDE B ,4'-DDD B 9575 Endrin B Endrin aldehyde B Endrin ketone B Analyst: MAW Date: 03/04/14 Reviewer: EAH Date: 03/04/14 Page 1 of 1 16 of 191

25 CURTIS & TOMPKINS PERFORMANCE EVALUATION FOR PEST Soil EPA 8081A Inst : GC21 Run Name : PEM IDF : 1.0 Seqnum : File : 063_032 Time : 04-MAR :11 Standards: S24117 Analyte Ch Area % Breakdown Limit Flags 4,4'-DDT A ,4'-DDE A 559 4,4'-DDD A 4210 Endrin A Endrin aldehyde A 4524 Endrin ketone A ,4'-DDT B ,4'-DDE B ,4'-DDD B Endrin B Endrin aldehyde B Endrin ketone B Analyst: MAW Date: 03/05/14 Reviewer: EAH Date: 03/05/14 Page 1 of 1 17 of 191

26 CURTIS & TOMPKINS PERFORMANCE EVALUATION FOR PEST Soil EPA 8081A Inst : GC21 Run Name : PEM IDF : 1.0 Seqnum : File : 063_046 Time : 05-MAR :09 Standards: S24117 Analyte Ch Area % Breakdown Limit Flags 4,4'-DDT A ,4'-DDE A 507 4,4'-DDD A 7024 Endrin A Endrin aldehyde A 4476 Endrin ketone A ,4'-DDT B ,4'-DDE B ,4'-DDD B Endrin B Endrin aldehyde B Endrin ketone B Analyst: MAW Date: 03/05/14 Reviewer: EAH Date: 03/05/14 Page 1 of 1 18 of 191

27 CURTIS & TOMPKINS CONTINUING CALIBRATION FOR PEST Soil EPA 8081A Inst : GC21 Run Name : ISOPEST_4 IDF : 1.0 Seqnum : File : 063_033 Time : 04-MAR :32 Cal : Caldate : 03-MAR-2014 Standards: S24167 Avg Analyte Ch RF/CF RF/CF Spiked Quant Units %D Max %D Flags alpha-bhc A pg/ul 4 15 gamma-bhc A pg/ul 5 15 beta-bhc A pg/ul delta-bhc A pg/ul 9 15 Heptachlor A pg/ul 7 15 Aldrin A pg/ul 8 15 Heptachlor epoxide A pg/ul 3 15 gamma-chlordane A pg/ul 3 15 alpha-chlordane A pg/ul ,4'-DDE A pg/ul Endosulfan I A pg/ul 2 15 Dieldrin A pg/ul c+ *** Endrin A pg/ul 8 15 v- 4,4'-DDD A pg/ul Endosulfan II A pg/ul ,4'-DDT A pg/ul 0 15 Endrin aldehyde A pg/ul Methoxychlor A pg/ul 7 15 Endosulfan sulfate A pg/ul 2 15 TCMX A pg/ul Decachlorobiphenyl A pg/ul alpha-bhc B pg/ul 9 15 gamma-bhc B pg/ul beta-bhc B pg/ul delta-bhc B pg/ul Heptachlor B pg/ul 9 15 Aldrin B pg/ul c+ *** Heptachlor epoxide B pg/ul gamma-chlordane B pg/ul 7 15 alpha-chlordane B pg/ul ,4'-DDE B pg/ul Endosulfan I B pg/ul Dieldrin B pg/ul c+ *** Endrin B pg/ul v- 4,4'-DDD B pg/ul Endosulfan II B pg/ul c+ *** 4,4'-DDT B pg/ul 8 15 Endrin aldehyde B pg/ul c+ *** Methoxychlor B pg/ul Endosulfan sulfate B pg/ul c+ *** TCMX B pg/ul Decachlorobiphenyl B pg/ul 9 15 Average EPA 8081A A (n=23) 6 15 Average EPA 8081A B (n=23) MAW 03/05/14 : Corrected automatically drawn baseline. Page 1 of of 191

28 Analyst: MAW Date: 03/05/14 Reviewer: EAH Date: 03/05/14 +=high bias -=low bias c=ccv v=icv Page 2 of of 191

29 CURTIS & TOMPKINS CONTINUING CALIBRATION FOR PEST Soil EPA 8081A Inst : GC21 Run Name : ISOPEST_4 IDF : 1.0 Seqnum : File : 063_047 Time : 05-MAR :30 Cal : Caldate : 03-MAR-2014 Standards: S24167 Avg Analyte Ch RF/CF RF/CF Spiked Quant Units %D Max %D Flags alpha-bhc A pg/ul 6 15 gamma-bhc A pg/ul 7 15 beta-bhc A pg/ul delta-bhc A pg/ul Heptachlor A pg/ul 0 15 Aldrin A pg/ul Heptachlor epoxide A pg/ul 4 15 gamma-chlordane A pg/ul 4 15 alpha-chlordane A pg/ul ,4'-DDE A pg/ul Endosulfan I A pg/ul 2 15 Dieldrin A pg/ul c+ *** Endrin A pg/ul 0 15 v- 4,4'-DDD A pg/ul c+ *** Endosulfan II A pg/ul ,4'-DDT A pg/ul c- *** Endrin aldehyde A pg/ul 2 15 Methoxychlor A pg/ul Endosulfan sulfate A pg/ul 3 15 TCMX A pg/ul 0 15 Decachlorobiphenyl A pg/ul alpha-bhc B pg/ul 9 15 gamma-bhc B pg/ul beta-bhc B pg/ul 9 15 delta-bhc B pg/ul Heptachlor B pg/ul 8 15 Aldrin B pg/ul c+ *** Heptachlor epoxide B pg/ul 8 15 gamma-chlordane B pg/ul 5 15 alpha-chlordane B pg/ul ,4'-DDE B pg/ul Endosulfan I B pg/ul 8 15 Dieldrin B pg/ul Endrin B pg/ul 4 15 v- 4,4'-DDD B pg/ul Endosulfan II B pg/ul ,4'-DDT B pg/ul Endrin aldehyde B pg/ul Methoxychlor B pg/ul 8 15 Endosulfan sulfate B pg/ul TCMX B pg/ul Decachlorobiphenyl B pg/ul Average EPA 8081A A (n=23) 8 15 Average EPA 8081A B (n=23) MAW 03/05/14 : Corrected automatically drawn baseline. Page 1 of of 191

30 Analyst: MAW Date: 03/05/14 Reviewer: EAH Date: 03/05/14 +=high bias -=low bias c=ccv v=icv Page 2 of of 191

31 CURTIS & TOMPKINS SEQUENCE SUMMARY FOR Instrument : GC21 Begun : 03/03/14 07:26 Method : EPA 8081A SOP Version : pesticides_rv17 # File Type Sample ID Matrix Batch Analyzed IDF Stds Used _001 X HEX 03/03/14 07: _002 PEM PEM 03/03/14 07: _003 CCV ISOPEST_4 03/03/14 08: ac _004 X HEX 03/03/14 10: _005 PEM PEM 03/03/14 10: _006 CCV ISOPEST_4 03/03/14 10: ac _007 CCV TOX_150 03/03/14 11: arsd av _008 SAMPLE Soil /03/14 11: _009 CCV TOX_150 03/03/14 12: arsd av _010 PEM PEM 03/03/14 12: _011 CCV ISOPEST_4 03/03/14 13: ac _012 CCV ISOPEST_3 03/03/14 13: ac _013 BLANK QC Water /03/14 14: >ac <ac _014 BS QC Water /03/14 15: >ac <ac _015 BSD QC Water /03/14 15: >ac <ac _016 SAMPLE Water /03/14 15: _017 PEM PEM 03/03/14 16: _018 CCV ISOPEST_3 03/03/14 16: ac _019 X HEX 03/03/14 16: _020 X HEX 03/03/14 17: _021 PEM PEM 03/03/14 17: _022 IB CALIB 03/03/14 18: _023 ICAL ISOPEST_1/2 03/03/14 18: _024 ICAL ISOPEST_1 03/03/14 18: _025 ICAL ISOPEST_2 03/03/14 19: _026 ICAL ISOPEST_3 03/03/14 19: _027 ICAL ISOPEST_4 03/03/14 19: _028 ICAL ISOPEST_5 03/03/14 20: _029 ICAL ISOPEST_6 03/03/14 20: _030 ICAL ISOPEST_7 03/03/14 20: _031 X HEX 03/03/14 21: _032 ICV PEST_ICV 03/03/14 21: _033 X ICV 03/03/14 21: _034 CCV CHLOR_150 03/03/14 22: _035 CCV TOX_150 03/03/14 22: _036 X HEX 03/03/14 22: _037 IB CALIB 03/03/14 23: _038 ICAL TOX_40 03/03/14 23: _039 ICAL TOX_75 03/04/14 00: _040 ICAL TOX_150 03/04/14 00: _041 ICAL TOX_250 03/04/14 00: _042 ICAL TOX_500 03/04/14 01: _043 ICAL TOX_750 03/04/14 01: _044 ICAL TOX_ /04/14 01: _045 X HEX 03/04/14 02: _046 X UTOX_150 03/04/14 02: _047 ICV UTOX_150 03/04/14 02: MAW 03/03/14 : I verified that the vials loaded on the instrument matched the sequence data entry, for runs 1 through 9. MAW 03/04/14 : I verified that the vials loaded on the instrument matched the Page 1 of 2 23 of 191

32 CURTIS & TOMPKINS SEQUENCE SUMMARY FOR Instrument : GC21 Begun : 03/03/14 07:26 Method : EPA 8081A SOP Version : pesticides_rv17 sequence data entry, for runs 10 through 47. Standards used: 1=S =S =S =S =S =S =S =S =S =S =S =S =S =S =S =S23719 Flags used: <=opening >=closing ac=average CCV drift out arsd=average ICAL %RSD out av=average ICV drift out Page 2 of 2 24 of 191

33 CURTIS & TOMPKINS SEQUENCE SUMMARY FOR Instrument : GC21 Begun : 03/04/14 09:32 Method : EPA 8081A SOP Version : pesticides_rv17 # File Type Sample ID Matrix Batch Analyzed IDF Stds Used _001 X HEX 03/04/14 09: _002 PEM PEM 03/04/14 09: _003 CCV ISOPEST_3 03/04/14 10: _004 CCV TOX_150 03/04/14 10: arsd av _005 SAMPLE Soil /04/14 11: _006 PEM PEM 03/04/14 11: _007 CCV TOX_150 03/04/14 12: arsd av _008 CCV ISOPEST_2 03/04/14 12: ac _009 BLANK QC Water /04/14 13: <ac _010 BS QC Water /04/14 13: <ac _011 BSD QC Water /04/14 13: <ac _012 SAMPLE Water /04/14 14: _013 SAMPLE Water /04/14 14: <ac _014 SAMPLE Water /04/14 14: <ac _015 PEM PEM 03/04/14 15: _016 X CCV 03/04/14 15: _017 CCV ISOPEST_4 03/04/14 16: _018 BLANK QC Water /04/14 17: _019 SAMPLE Water /04/14 17: _020 PEM PEM 03/04/14 17: _021 CCV ISOPEST_4 03/04/14 18: _022 SAMPLE Soil /04/14 18: _023 SAMPLE Soil /04/14 18: _024 MSS Soil /04/14 19: _025 SAMPLE Soil /04/14 19: _026 SAMPLE Soil /04/14 20: _027 SAMPLE Soil /04/14 20: _028 SAMPLE Soil /04/14 20: _029 SAMPLE Soil /04/14 21: _030 SAMPLE Soil /04/14 21: _031 SAMPLE Soil /04/14 21: _032 PEM PEM 03/04/14 22: _033 CCV ISOPEST_4 03/04/14 22: _034 X IB 03/04/14 22: _035 BLANK QC Soil /04/14 23: _036 LCS QC Soil /04/14 23: _037 MSS Soil /04/14 23: :ACHLORDANE= _038 MS QC Soil /05/14 00: :GCHLORDANE= _039 MSD QC Soil /05/14 00: _040 SAMPLE Soil /05/14 01: _041 SAMPLE Soil /05/14 01: _042 SAMPLE Soil /05/14 01: _043 SAMPLE Soil /05/14 02: _044 SAMPLE Soil /05/14 02: _045 SAMPLE Soil /05/14 02: _046 PEM PEM 03/05/14 03: _047 CCV ISOPEST_4 03/05/14 03: MAW 03/04/14 : I verified that the vials loaded on the instrument matched the sequence data entry, for runs 1 through 8. MAW 03/04/14 : I verified that the vials loaded on the instrument matched the Page 1 of 2 25 of 191

34 CURTIS & TOMPKINS SEQUENCE SUMMARY FOR Instrument : GC21 Begun : 03/04/14 09:32 Method : EPA 8081A SOP Version : pesticides_rv17 sequence data entry, for runs 9 through 16. MAW 03/04/14 : I verified that the vials loaded on the instrument matched the sequence data entry, for runs 17 through 21. MAW 03/05/14 : I verified that the vials loaded on the instrument matched the sequence data entry, for runs 22 through 47. Standards used: 1=S =S =S =S =S24167 Flags used: <=opening ac=average CCV drift out arsd=average ICAL %RSD out av=average ICV drift out Page 2 of 2 26 of 191

35 SAMPLE PREPARATION SUMMARY Batch # : Analysis : 8081 Started By : MB3 Prep Date : 03-MAR :45 Finished By : MB3 Method : 3550B SOP Version : 8081_3550_rv14 Units : g Spike #1 ID : S24216 Spike #2 ID : S23974 Spike #3 ID : S24100 Sample Stype Matrix Initial Final Clean Prep ph Sp 1 Sp 2 Sp 3 Clean Analysis Comments DF DF Vol Vol Vol Method Soil , PCB Soil Soil Soil Soil , PCB Soil , PCB Soil , PCB mss Soil , PCB Soil , PCB Soil , PCB Soil , PCB QC BLANK Soil PCB QC LCS Soil PCB QC MS Soil PCB QC MSD Soil PCB QC LCS Soil QC MS Soil QC MSD Soil EAH 03/04/14 : Reviewed for PCB and check batch documents for pest. MAW 03/05/14 : Matrix spikes QC729727,QC (batch ) were not reported because the parent sample required a dilution that would have diluted out the spikes. KMH: 03/04/14 MAW: 03/05/14 EAH: 03/05/14 Page 1 of 1 27 of 191

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40 REPORTING SUMMARY FOR PEST Soil Sample ID Analyte Inst ID Ch Date & Time alpha-bhc GC21 A 03/05/14 01: beta-bhc GC21 A 03/05/14 01: gamma-bhc GC21 A 03/05/14 01: delta-bhc GC21 A 03/05/14 01: Heptachlor GC21 B 03/05/14 01: Aldrin GC21 A 03/05/14 01: Heptachlor epoxide GC21 A 03/05/14 01: Endosulfan I GC21 A 03/05/14 01: Dieldrin GC21 B 03/05/14 01: ,4'-DDE GC21 B 03/05/14 01: Endrin GC21 A 03/05/14 01: Endosulfan II GC21 A 03/05/14 01: Endosulfan sulfate GC21 B 03/05/14 01: ,4'-DDD GC21 A 03/05/14 01: Endrin aldehyde GC21 A 03/05/14 01: ,4'-DDT GC21 B 03/05/14 01: alpha-chlordane GC21 A 03/05/14 01: gamma-chlordane GC21 A 03/05/14 01: Methoxychlor GC21 A 03/05/14 01: Toxaphene GC21 A 03/05/14 01: TCMX GC21 A 03/05/14 01: Decachlorobiphenyl GC21 A 03/05/14 01:01 QC alpha-bhc GC21 A 03/04/14 23:15 QC beta-bhc GC21 A 03/04/14 23:15 QC gamma-bhc GC21 A 03/04/14 23:15 QC delta-bhc GC21 A 03/04/14 23:15 QC Heptachlor GC21 A 03/04/14 23:15 QC Aldrin GC21 A 03/04/14 23:15 QC Heptachlor epoxide GC21 A 03/04/14 23:15 QC Endosulfan I GC21 A 03/04/14 23:15 QC Dieldrin GC21 A 03/04/14 23:15 QC ,4'-DDE GC21 A 03/04/14 23:15 QC Endrin GC21 A 03/04/14 23:15 QC Endosulfan II GC21 A 03/04/14 23:15 QC Endosulfan sulfate GC21 A 03/04/14 23:15 QC ,4'-DDD GC21 A 03/04/14 23:15 QC Endrin aldehyde GC21 A 03/04/14 23:15 QC ,4'-DDT GC21 B 03/04/14 23:15 QC alpha-chlordane GC21 A 03/04/14 23:15 QC gamma-chlordane GC21 A 03/04/14 23:15 QC Methoxychlor GC21 A 03/04/14 23:15 QC Toxaphene GC21 A 03/04/14 23:15 QC TCMX GC21 A 03/04/14 23:15 QC Decachlorobiphenyl GC21 A 03/04/14 23:15 QC gamma-bhc GC21 A 03/04/14 23:36 QC Heptachlor GC21 A 03/04/14 23:36 QC Aldrin GC21 A 03/04/14 23:36 QC Dieldrin GC21 A 03/04/14 23:36 QC Endrin GC21 A 03/04/14 23:36 QC ,4'-DDT GC21 B 03/04/14 23:36 QC TCMX GC21 A 03/04/14 23:36 QC Decachlorobiphenyl GC21 A 03/04/14 23:36 Page 1 of 1 32 of 191

41 Laboratory Job Number ANALYTICAL REPORT PCBs Tetra Tech EMI Project : STANDARD 1999 Harrison Street Location : WSM PHA Sampling Oakland, CA Level : IV Sample ID Lab ID WSMDUI This data package has been reviewed for technical correctness and completeness. Release of this data has been authorized by the Laboratory Manager or the Manager's designee, as verified by the following signature. The results contained in this report meet all requirements of NELAC and pertain only to those samples which were submitted for analysis. This report may be reproduced only in its entirety. Signature: Date: 03/18/2014 Mike J. Dahlquist Project Manager mike.dahlquist@ctberk.com CA ELAP# 2896, NELAP# of 197

42 CASE NARRATIVE PCBS (EPA 8082) Laboratory number: Client: Tetra Tech EMI Location: WSM PHA Sampling Request Date: 02/27/14 Samples Received: 02/27/14 This data package contains sample and QC results for one soil sample, requested for the above referenced project on 02/27/14. See attached cooler receipt form for any sample receipt problems or discrepancies. PCBs (EPA 8082): All samples underwent sulfuric acid cleanup using EPA Method 3665A. All samples underwent sulfur cleanup using the copper option in EPA Method 3660B. Matrix spikes QC729727,QC (batch ) were not reported because the parent sample required a dilution that would have diluted out the spikes. No other analytical problems were encountered. Page 1 of of 197

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44 Polychlorinated Biphenyls (PCBs) Lab #: Location: WSM PHA Sampling Client: Tetra Tech EMI Prep: EPA 3550B Project#: STANDARD Analysis: EPA 8082 Field ID: WSMDUI-007 Batch#: Lab ID: Sampled: 02/27/14 Matrix: Soil Received: 02/27/14 Units: ug/kg Prepared: 03/03/14 Basis: dry Analyzed: 03/04/14 Diln Fac: Moisture: 77% Analyte Result RL MDL Aroclor-1016 ND Aroclor-1221 ND Aroclor-1232 ND Aroclor-1242 ND Aroclor Aroclor-1254 ND Aroclor J Surrogate %REC Limits TCMX Decachlorobiphenyl J= Estimated value ND= Not Detected at or above MDL RL= Reporting Limit MDL= Method Detection Limit Page 1 of of 197