B - Supplemental Site Investigation (November 2015) — Cupertino City Council, June 17, 2025

SUPPLEMEN

TAL SITE INVESTIGATION SUMMARY REPORT

SEDGWICK ELEMENTARY SCHOOL EXPANSION PROJECT
10480 FINCH AVENUE

CUPERTINO, SANTA CLARA COUNTY, CALIFORNIA
(Site Code: 204271)
Prepared for:

CUPERTINO UNION SCHOOL DISTRICT
NOVEMBER 2015
Attachment B

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TABLE OF CONTENTS
Page

1.0 INTRODUCTION ............................................................................................. 1-1

2.0 BACKGROUND ............................................................................................... 2-1

3.0 SSI ACTIVITIES .............................................................................................. 3-1 OCPs ............................................................................................................ 3-1 Lead ............................................................................................................ 3-2 SSI Field Variances ......................................................................................... 3-2 Quality Assurance/Quality Control (QA/QC) .................................................... 3-2

4.0 SSI RESULTS ................................................................................................. 4-1 OCPs in Soil ................................................................. .. ................................. 4-1 Lead in Soil ..................................................................................................... 4-2 Duplicate Soil Samples .................................................................................... 4-2 Equipment Blank ............................................................................................. 4-3 Field B
lank ...................................................................................................... 4-4 Laboratory QA/QC .......................................................................................... 4-4

5.0 RISK ASSESSMENT ....................................................................................... 5-1

6.0 CONCLUSIONS AND RECOMMENDATIONS ................................................ 6-1

7.0 REFERENCES ............................................................................................... 7-1 TABLES
4-1 Soil
Results for OCPs ..................................................................................... 4-8 4-2 Soil Results for Lead ....................................................................................... 4-11 5-1 Soil Exposure Screening Evaluation ................................................................ 5-2 Novem
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TABLE OF CONTENTS (CONTINUED)
Page
PLATES
1-1 Site Plan .......................................................................................................... 1-2 1-2 Site Location.................................................................................................... 1-3 2-1 PEA Chlordane Results .................................................................................. 2-3 2-2 PEA Lead Results (Surface Soil) ..................................................................... 2-4 3-1 Step-out Soil Samples - OCPs......................................................................... 3-3 3-2 Step-out Soil Samples - OCPs......................................................................... 3-4 3-3 Step-out Soil Samples – Lead ......................................................................... 3-5 4-1A Chlordane Results (Surface Soil) ..................................................................... 4-13 4-1B Chlordane Results (Subsurface Soil) ............................................................... 4-14 4-2 Lead Results (Surface Soil) ............................................................................. 4-15 6-1 Estimated Extent of OCP/Lead Impacts (Main Residence) .............................. 6-2 6-2 Estimated Extent of OCP Impacts (Driveway area).......................................... 6-3 APP

ENDICES
APPENDIX A: DTSC CORRESPONDENCE
APPENDIX B: QUALTITY ASSURANCE PROJECT PLAN (QAPP)
APPENDIX C: ANALYTICAL LABORATORY REPORTS AND CHAIN-OF-CUSTODYS APPENDIX D: LEADSPREAD

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1.0 INTRODUCTION
This document presents the results of a Supplemental Site Investigation (SSI) that was completed by Padre Associates, Inc. (Padre) , on behalf of the Cupertino Union School District (District), for the Sedgwick Elementary School Expansion Project located at 10480 Finch Avenue in Cupertino, Santa Clara County, California ( Project Site). The Project Site is illustrated on Plate 1-1: Site Location and Plate 1-2: Site Plan.

The SSI was completed in accordance with the Padre document titled, Supplemental Site Investigation Technical Memorandum , Sedgwick Elementary Expansion Site, Cupertino Union School District, Cupertino, Ca (Site Code: 204271 ), dated October 14, 2015 and in general accordance with the following DTSC guidance documents:
• CALEPA, DTSC, Preliminary Endangerment Assessment Guidance Manual (January 1994, Interim Final – Final October 2013);
• DTSC, Interim Guidance for Sampling Agricultural Properties (Third Revision) , dated August 7, 2008; and
• DTSC, Interim Guidance, Evaluation of School Sites with Potential Contamination as a Result of Lead from Lead- Based-Paint, Organochlorine Pesticides from Temiticides, and Polychlorinated Biphenyls from Electrical Transformers, revised June 9, 2006.

Padre previously submitted the report titled Preliminary Environmental Assessment, Sedgwick Elementary School Expansion Project, 10480 Finch Avenue, Cupertino, Santa Clara County California, dated Se ptember 2015. Based on the results of the PEA, elevated concentrations of chlordane and lead were identified in soil at the Project Site requiring further remedial investigations. Due to the presence of elevated concentrations of chlordane and lead, the potential cancer risk for the Project Site is greater than 1E -06, and a response action to reduce or eliminate the impact of the contaminants is recommended.

Recently, the risk screening level for chlordane was decreased from 1,700 micrograms per kilogram ( μg/kg) to 430 μg/kg. Due to this revision, several soil sample locations were identified requiring further assessment. Therefore, the purpose of the SSI was to further assess and delineate the lateral and vertical extent of contaminated soil identified at the Project Site.

The SSI consisted of step-out and step-down soil samples to further delineate the extent of organochlorine pesticides (OCPs) and lead contamination in the area of the main residence and to further evaluate elevated lead concentrations identified at the southeast portion of the Project Site. The results of the SSI will be used to determine the extent of a response action at the Project Site.

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2.0 BACKGROUND
The Project Site consists of approximately 1.48 acres of residential land and, which is identified by the Santa Clara County Assessor’s Office as Assessor Parcel Number (APN) 375- 40-067. The Project Site is located adjacent to the northwest corner of the Sedgwick Elementary School property at 10480 Finch Avenue in Cupertino, Santa Clara County, California.

Cupertino Union School District (District) intends to purchase the property as part of the Sedgwick Elementary School Expansion Project. The expansion project will not result in an addition of classrooms or students to the existing elementary school. Public water and sewer will be provided to the Project Site by the San Jose Water Company and the Sunnyvale Sanitation District, respectively.

Padre reviewed the document titled Phase I Environmental Site Assessment and Preliminary So il Quality Evaluation, 10480 Finch Avenue, Cupertino, California dated July 1, 2014. A copy of the Phase I ESA has previously been provided to DTSC. The Phase I ESA was prepared by Cornerstone Earth Group (Cornerstone) on behalf of David J. Powers & Associates, and a copy was provided to DTSC. Below is a summary of the findings presented in the Phase I ESA:

The property is currently owned by F.A. Pestarino Jr. Trustee, and has been owned by the Pestarino family since the 1930s. The property historically contained a prune tree orchard.

According to a review of available historical aerial photographs, the Project Site was planted as an orchard from at least 1939 through the late 1950s. The existing residential building is present in a 1956 aerial photograph. In addition to the residence, the Project Site contains a workshop (wood-framed with corrugate metal roof) located at the southeast corner of the Project Site. Located south and adjacent to the workshop are two, small, single-room dwellings that are wood-framed and situated on concrete blocks.

In 1996 a 500- gallon gasoline underground storage t ank (UST) was removed from the Project Site. Reportedly, the UST had been empty for approximately 20 years prior to removal.

Reportedly, two soil samples were collected below the ends of the UST at depths of approximately 7- feet below grade surface (bgs). Total petroleum hydrocarbons identified as gasoline (TPHg) were identified in soil at concentrations up to 60 milligrams per kilogram (mg/kg). The Santa Clara Valley Water District (SCVWD) subsequently issued a case- closure letter for the UST dated March 26, 1997 stating that “Due to the low levels of hydrocarbons detected and the site location, Santa Clara Valley Water District staff believes that with time the residual pollution will naturally attenuate and does not require any further corrective action at this time.”
Due to recognized environmental conditions (RECs) identified by the Phase I ESA, Cornerstone conducted preliminary soil assessment activities at the Project Site. Based on the historic agricultural use (orchard) at the Project Site and the age/construction of the existing structures, a total of sixteen surface soil samples were collected throughout the Project Site and

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chemically analyzed for the presence of pesticides, arsenic, lead, and mercury. Five of the soil samples were collected at the perimeter of the residence, and two soil samples were collected at the perimeter of the workshop. Below is summary of the analytical results:
• Chlordane was reported at a maximum concentration of 2,800 micrograms per kilogram ( µg/kg) a t the location of soil sample SS -5 located along the western side of the residence;
• Arsenic was reported at concentrations ranging from 5.2 mg/kg to 15 mg/kg. The highest arsenic concentration was identified at the location of soil sample SS -6 located along the northwest property boundary; and
• Lead was reported at a maximum concentration of 100 mg/kg at the location of soil sample SS-2 located along the western side of the workshop.

The soil assessment activities included the advancement of one drill hole using direct - push drilling technology to an approximate depth of 20 feet at the location of the former UST.

Soil samples were collected from approximate depths of 8 feet and 12 feet, which were chemically analyzed for the presence of TPHg, benzene, toluene, ethylbenzene, total xylenes (BTEX) and methyl-tert butyl ether (MTBE). Reportedly, TPHg, BTEX, or MTBE concentrations were not identified in the soil sample collected from a depth of 8 feet below ground s urface (bgs). However, TPHg, ethylbenzene, and total xylenes were identified at concentrations of 1,300 mg/kg, 27 mg/kg, and 180 mg/kg, respectively in the 12-foot soil sample.

During July 2015 Padre conducted a Preliminary Environmental Assessment (PE A) to further assess the chemicals of concern identified as part of Cornerstone’s preliminary soil assessment activities. The results of the PEA were documented in the Padre report titled Preliminary Environmental Assessment, Sedgwick Elementary School Expansion Project, 10480 Finch Avenue, Cupertino, Santa Clara County, California, dated September 2015. Based on the results of the PEA, elevated concentrations of pesticides and lead were identified at the Project Site requiring further investigation and/or remediation.

Based on the results of the PEA, chlordane and was identified in surface soils at the Project Site at concentrations exceeding their respective human health screening levels. The total increased cancer risk from chlordane identified in soils at the Project Site is estimated to be

3.2 x 10
-5, which exceeds DTSC’s “point of departure” of 1 in 1,000,000 (>10 -6). Chlordane concentrations identified in soil during the course of the PEA are presented on Plate 2-1.

Concentrations of lead ranged from 9.0 to 310 mg/kg in surface soil samples collected at the Project Site. Using DTSC’s lead risk assessment spreadsheet model (LeadSpread Version 8), exposure to the lead concentrations identified at the Project Site would result in a 90th percentile blood lead concentration of 8.0 micrograms per deciliter (µg/dl) in children, which exceeds the Office of Environmental Health Hazard Assessment (OEHHA) blood toxicity level of 1 µg/dl. Lead concentrations identified in surface soil during the course of the PEA are presented on Plate 2-2.

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3.0 SSI ACTIVITIES
On October 27, 2015 soil samples were collected in accordance with the sample collection procedures outlined in the Project Site PEA Work Plan, dated May 2015; and the SSI Technical Memorandum dated October 2 015 and approved by DTSC . A c opy of the SSI Technical Memorandum approval letter are presented in Appendix A.

During the completion of the PEA, elevated concentrations of chlordane were identified around the perimeter of the main residence building at concentrations exceeding the DTSC- modified screening level of 430 µg/kg. Additionally, lead was identified in several locations at concentrations exceeding DTSC’s screening level of 80 mg/kg. T he SSI field sampling plan is summarized below:

OCPs
• At the location of sample point P -4 (west side of residence), chlordane was identified at a concentration of 1,100 µg/kg at a depth of 1.0 to 1.5 feet. At this location, discrete step -down soil samples were collected from approximate depths of 2.0 to 2.5 feet and 3.0 to 3.5 feet. The 2.0 to 2.5- foot sample was chemically analyzed for OCPs and the 3.0 to 3.5-foot sample was placed on-hold with the analytical laboratory. The step -down soil sample location are presented on Plate 3-1.
• At the location of sample points P -10 and P- 11 (north side of residence) and P-15 (east side of residence), chlordane was identified in surface soil samples exceeding 430 µg/kg. At these locations, step- out samples were collected at the surface to 0.5 feet and depths of 1.0 to 1.5 feet and che mically analyzed for OCPs. The step-out soil sample locations are presented on Plate 3-1. • At the location of surface soil sample SS -6 collected during the June 2014 preliminary soil assessment conducted by Cornerstone, chlordane was identified at a concentration of 520 µ g/kg which exceeds the revised DTSC- modified screening level of 430 µg/kg. Since this location is not near a structure, Padre collected step-out soil samples on 5 and 10 -foot centers from SS -6. Soil samples were collected at the surface t o 0.5 feet, depths of 1.0 to 1.5 feet and

2.0 to 2.5 feet. The surface and 1.0 to 1.5 -foot samples were chemically analyzed for OCPs and the 2.0 to 2.5-foot samples were placed on-hold with the analytical laboratory. Additionally, the 10-foot step- out samples were placed on- hold pending the results of the 5 -foot step- out soil samples. The step- out soil sample locations are presented on Plate 3-2.

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Lead
• At the location of sample point s P- 13 and P -15 (residence courtyard) step- out samples were collected at the surface to 0.5 feet and chemically analyzed for lead. The step-out soil sample locations are presented on Plate 3-3. • At the location of sample points P -17 and P- 28 (single-room dwelling) step- out samples were collected at the surface to 0.5 feet and chemically analyzed for lead. The step-out soil sample locations are presented on Plate 3-3.

SSI Field Variances
During the course of sampling activities, one additional soil sample ( P-29A (SURF)) was collected and chemically analyzed for lead to further characterize this area of the Project Site.

Quality Assurance / Quality Control (QA/QC)
For quality control/quality assurance (QA/QC) measures, approximately 10% of the discrete soil samples (OCPs, lead) were split by the analytical laboratory and chemi cally analyzed as duplicate samples. Additionally, one equipment blank (water sample) and field blank (water sample) per sample event were chemically analyzed for the presence of arsenic and lead. Them, collection of these samples is discussed in more detail in the q uality assurance project plan (QAPP) is presented in Appendix B.

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4.0 SSI RESULTS
The following sections of this document present the results of field sampling activities performed by Padre at the Project Site on October 27 th, 2015. The laboratory analytical results are summarized in Table 4-1 and Table 4-2. Additionally, chlordane concentrations identified at the Project Site are presented on Plates 4- 1A (surface soil) and 4- 1B (subsurface soil), and lead concentrations identified in surface soil are presented on Plate 4-2 . Certified analytical laboratory reports and chain-of-custody documentation are provided in Appendix D.

OCPs in Soil
Main Residence. Discrete step-out soil samples were collected at locations of previously collected soil samples around the main residence structure where concentrations of OCPs were identified exceeding their respective screening levels. Results of the laboratory analysis are summarized below:

The following OPCs were identified at concentrations exceeding regulatory sc reening levels:
• Chlordane (technical) was reported at concentrations ranging from less than 25 to 4,800 µg/kg. The highest concentration of chlordane was identified in soil sample P-10D (SURF).

The following OPCs were identified at concentrations below regulatory screening levels:
• DDD was reported at concentrations ranging from less than 1.0 to 6.4 µg/kg; • DDE was reported at concentrations ranging from less than 1.0 to 150 µg/kg; • DDT was reported at concentrations ranging from less than 1.0 to 81 µg/kg; • D ieldrin was reported at concentrations ranging from less than 1.0 to 1.7 µg/kg; • Endrin was reported at a concentration 2.1 µg/kg;
• Heptachlor was reported at concentrations ranging from less than 1.0 to

5.4 µg/kg; and
• Heptachlor epoxide was reported at concentrations ranging from less than 1.0 to 30 µg/kg.

Soil Sample SS- 6. At the approximate location of surface soil sample SS -6, a soil sample (SS -6A) was collected at the surface to 0.5 feet and 1.0 to 1.5 feet and chemically analyzed for OCPs. Additionally, step-out soil samples were collected on 5 and 10 -foot centers

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with the 10-foot sample placed on- hold pending the results of the 5- foot step-out soil samples.

Results of the laboratory analysis are summarized below:

The following OPCs were identified at concentrations below regulatory screening levels:
• Chlordane (technical) was reported at concentrations ranging from less than 25 to 44 µg/kg;
• DDD was reported at concentrations ranging from less than 1.0 to 2.5 µg/kg; • DDE was reported at concentrations ranging from 0.45J to 25 µg/kg; • DDT was reported at concentrations ranging from less than 1.0 to 20 µg/kg; • Heptachlor was reported at concentrations ranging from less than 1.0 to 0.65J µg/kg; • Heptachlor epoxide was reported at concentrations ranging from less than 1.0 to

1.0 µg/kg; and
• Toxaphene was reported at concentrations ranging from less than 50 to 410 µg/kg.

Lead in Soil
At the location of PEA sample points P -13 and P -15 (residence courtyard) step -out samples were collected at the surface to 0.5 feet and chemically analyzed for lead. The results are summarized below:
• Lead was reported at concentration ranging from 31 to 68 mg/kg.

At the location of sample points P- 17 and P-28 (single-room dwelling) step-out samples were collected at the surface to 0.5 feet and chemically analyzed for lead. The results are summarized below:
• Lead was detected at concentration ranging from 60 to 73 (mg/kg).

Duplicate Soil Samples
Two discrete soil samples were split by the analytical laboratory and chemically analyzed for the presence of OCPs by U.S. EPA Method 8081A . The analytical results are presented in Table 4-1 and summarized below.

For discrete soil sample P-11B (SURF) and the associated duplicate soil sample:
• C hlordane was reported at concentrations of 650 and 470 µg/kg, respectively. The results are comparable;
• DDD was reported at concentrations of 4.3 and 4.4 µg/kg, respectively. The results

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are comparable;
• DDE was reported at concentrations of 26 and 21 µg/kg, respectively. The results are comparable;
• DDT was reported at concentrations of 55 and 44 µg/kg, respectively. The results are comparable;
• Dieldrin was not reported at a concentration of less than 1.0 and 1.7 µg/kg in the associated duplicate soil sample which is slightly above the reporting limit of

1.0 µg/kg. The results are comparable;
• Heptachlor was reported at concentrations of less than 1.0 and 0.71J, respectively.

The results are comparable; and
• Heptachlor epoxide was reported at concentrations of 4.7 and 3.8 µg/kg, respectively. The results are comparable.

For discrete soil sample P-15A (1.0-1.5’) and the associated duplicate soil sample:
• DDD was reported at concentrations of 1.7 and 0.99J, respectively. The results are comparable;
• DDE was reported at concentrations of 9.2 and 6.2 µg/kg, respectively. The results are comparable;
• DDT was reported at concentrations of 7.1 and 6.5 µg/kg, respectively. The results are comparable;
• Heptachlor was reported at concentrations of 0.34J and less than 1.0 µg/kg, respectively. The results are comparable.

One discrete soil sample was split by the analytical laboratory and chemically analyzed for the presence of lead by U.S. EPA Method 6020. The analytical results are presented in Table 4-1 and summarized below.

For discrete soil sample P-17A (SURF) and the associated duplicate soil sample:
• Le ad was reported at concentrations of 73 and 60 mg/kg, respectively. The results are comparable.

Equipment Blank
Distilled water was used as rinseate for decontaminating sampling equipment. The equipment blank sample was collected by carefully pouring rinseate water over and through recently cleaned equipment, and collected directly into the appropriate sample container.

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One equipment blank sample was collected for each sample event and chemically analyzed for lead by U.S. EPA Method 200.8. The results of the laboratory analysis are summarized below.
• The laboratory analysis did not identify lead at or above the analytical reporting limit.

Field Blank
One field blank sample was collected for each sampling event and chemically analyzed for lead by U.S. EPA Method 200.8. The results of the laboratory analysis are summarized below.
• The laboratory analysis did not identify lead at or above the analytical reporting limit.

Laboratory QA/QC
A cover letter with the signature of the lab director of CLS accompanies every laboratory report received for this project. According to the lab director, samples were analyzed utilizing EPA or other ELAP approved methodologies, and that the results are in compliance both technically and for completeness. The data quality objectives (DQO) met by laboratory for this project was level II. Copies of the CLS laboratory reports are presented in Appendix C.

CLS Work Order # 1510A30 – Report dated October 28, 2015 The laboratory reported the following notes regarding lead analysis:
• The matrix spike, matrix spike duplicate recovery, and relative percent deviation for lead was out of acceptance criteria but was validated by the post digestion spike.
• The relative percent deviation for the surrogate recovery was out of acceptance criteria but was validated by the post digestion spike.

The laboratory reported the following notes regarding Organochlorine Pesticides by U.S.

EPA Method 8081A for the following discrete soil samples:

The laboratory reported the following notes regarding discrete soil sample SS -6A (SURF):
• The concentration of DDD is less than the minimum level of quantitation (ML) but greater than the minimum detection limit (MDL). The reported concentration of DDD is an estimate.
• The concentration of dieldrin is less than the ML but greater than the MDL . The reported concentration of dieldrin is an estimate.
• The concentration of heptachlor is less than the ML but greater than the MDL.

The reported concentration of heptachlor is an estimate.

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The laboratory reported the following notes regarding discrete soil sample SS -6A (1.0-

1.5’):
• The concentration of DDD is less than the ML but greater than the MDL. The reported concentration of DDD is an estimate.

The laboratory reported the following notes regarding discrete soil sample SS -6B (SURF):
• The concentration of DDD is less than the ML but greater than the MDL. The reported concentration of DDD is an estimate.
• The concentration of dieldrin is less than the ML but greater than the MDL . The reported concentration of dieldrin is an estimate.

The laboratory reported the following notes regarding discrete soil sample SS-6C (SURF):
• The concentration of dieldrin is less than the ML but greater than the MDL . The reported concentration of dieldrin is an estimate.
• The concentration of heptachlor epoxide is less than the ML but greater than the MDL. The reported concentration of heptachlor epoxide is an estimate.

The laboratory reported the following notes regarding discrete soil sample SS-6D (SURF):
• The concentration of DDD is less than the ML but greater than the MDL. The reported concentration of DDD is an estimate.
• The concentration of heptachlor epoxide is less than the ML but greater than the MDL. The reported concentration of heptachlor epoxide is an estimate.

The laboratory reported the following notes regarding discrete soil sample SS -6B (1.0-

1.5’):
• The concentration of DDE is less than the ML but greater than the MDL . The reported concentration of DDE is an estimate.

The laboratory reported the following notes regarding discrete soil sample SS -6E (SURF):
• The concentration of dieldrin is less than the ML but greater than the MDL . The reported concentration of dieldrin is an estimate.

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The laboratory reported the following notes regarding discrete soil sample SS-6E (1.0-

1.5’):
• The concentration of DDE is less than the ML but greater than the MDL . The reported concentration of DDE is an estimate.
• The concentration of heptachlor is less than the ML but greater than the MDL.

The reported concentration of heptachlor is an estimate.

The laboratory reported the following notes regarding discrete soil sample P-4A (SURF):
• The concentration of chlordane (technical) is less than the ML but greater than the MDL. The reported concentration of chlordane is an estimate. • The concentration of DDE is less than the ML but greater than the MDL . The reported concentration of DDE is an estimate.

The laboratory reported the following notes regarding discrete soil sample P-10A (1.0-

1.5’):
• The concentration of heptachlor is less than the ML but greater than the MDL.

The reported concentration of heptachlor is an estimate.

The laboratory reported the following notes regarding discrete soil sample P-10B (SURF):
• The concentration of heptachlor is less than the ML but greater than the MDL.

The reported concentration of heptachlor is an estimate.

The laboratory reported the following notes regarding discrete soil sample P-10B (1.0-

1.5’):
• The concentration of heptachlor epoxide is less than the ML but greater than the MDL. The reported concentration of heptachlor epoxide is an estimate.

The laboratory reported the following notes regarding discrete soil sample P-10C (SURF):
• The concentration of heptachlor for is less than the ML but greater than the MDL .

The reported concentration of heptachlor is an estimate.

The laboratory reported the following notes regarding discrete soil sample P-10D (1.0-

1.5’):
• The concentration of heptachlor epoxide is less than the ML but greater than the MDL. The reported concentration of DDE is an estimate.

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The laboratory reported the following notes regarding discrete soil sample P -10D (1.0-

1.5’):
• The concentration of DDD is less than the ML but greater than the MDL. The reported concentration of DDD is an estimate.
• The concentration of heptachlor epoxide is less than the ML but greater than the MDL. The reported concentration of DDE is an estimate.

The laboratory reported the following notes regarding discrete soil sample P -11B (SURF):
• The concentration of dieldrin is less than the ML but greater than the MDL . The reported concentration of dieldrin is an estimate.

The laboratory reported the following notes regarding discrete soil sample P -11B (SURF) DUPE:
• The concentration of heptachlor is less than the ML but greater than the MDL.

The reported concentration of heptachlor is an estimate.

The laboratory reported the following notes regarding discrete soil sample P -11B (1.0-

1.5’):
• The concentration of heptachlor is less than the ML but greater than the MDL.

The reported concentration of heptachlor is an estimate. • The concentration of heptachlor epoxide is less than the ML but greater than the MDL. The reported concentration of heptachlor epoxide is an estimate.

The laboratory reported the following notes regarding discrete soil sample P- 15A (1.0-

1.5’):
• The concentration of heptachlor is less than the ML but greater than the MDL.

The reported concentration of heptachlor is an estimate.

The laboratory reported the following notes regarding discrete soil sample P -15A (1.0-

1.5’) DUPE:
• The concentration of DDD is less than the ML but greater than the MDL. The reported concentration of DDD is an estimate.

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Table 4-1 - Soil Results for OCPs
(results in µg/kg)

Sample
Identification
Aldrin
(a,b,d)-BHC
Gamma-BHC
Chlordane-
technical
DDD
DDE
DDT
Dieldrin
Endosulfan I
Endosulfan II
Endosulfan
Sulfate
Endrin
Endrin
Aldehyde
Endrin Ketone
Heptachlor
Heptachlor
Epoxide
Methoxychlor
Hexachloro
benzene
Hexachloro
cyclopentadiene
Toxaphene
PEA (July 2015)
P-1 (SURF) <10 <10 <10 3,700 <10 350 260 <10 <10 <10 <10 <10 <10 <10 <10 23 <10 <100 <200 <500 P-1 (SURF)DUPE <20 <20 <20 2,800 <20 290 210 <20 <20 <20 <20 <20 <20 <20 <20 31 <20 <200 <400 <1,000 P-1 (1-1.5’) <1.0 <1.0 <1.0 87 <1.0 9.5 5.9 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 0.86J <1.0 <10 <20 <50 P-2 (SURF) <1.0 <1.0 <1.0 120 <1.0 77 44 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 4.8 <1.0 <10 <20 <50 P-2 (1-1.5’) <1.0 <1.0 <1.0 <25 <1.0 0.46J <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <10 <20 <50 P-3 (SURF) <10 <10 <10 1,200 <10 56 46 <10 <10 <10 <10 <10 <10 <10 <10 4.0J <10 <100 <200 <500 P-3 (1-1.5’) <1.0 <1.0 <1.0 220 <1.0 6.5 8.2 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <10 <20 <50 P-4 (SURF) <1.0 <1.0 <1.0 2,900 <1.0 140 130 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 7.4 <1.0 <10 <20 <50 P-4 (1-1.5’) <10 <10 <10 1,100 <10 44 38 <10 <10 <10 <10 <10 <10 <10 <10 7.8J <10 <100 <200 <500 P-5 (SURF) <1.0 <1.0 <1.0 63 0.76 J 24 24 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 1.6 <1.0 <10 <20 <50 P-5 (1-1.5’) <1.0 <1.0 <1.0 <25 <1.0 0.93J 1.1 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <10 <20 <50 P-6 (SURF) <10 <10 <10 3,400 <10 120 210 <10 <10 <10 <10 <10 <10 <10 <10 6.0J <10 <100 <200 <500 P-6 (1-1.5’) <1.0 <1.0 <1.0 <25 <1.0 0.94J 0.73J <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <10 <20 <50 P-7 (SURF) <10 <10 <10 1,900 <10 120 110 <10 <10 <10 <10 <10 <10 <10 <10 26 <10 <100 <200 <500 P-7 (1-1.5’) <1.0 <1.0 <1.0 <25 <1.0 1.4 1.1 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <10 <20 <50 P-8 (SURF) <1.0 <1.0 <1.0 57 <1.0 14 11 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 3.3 <1.0 <10 <20 <50 P-8 (1-1.5’) <1.0 <1.0 <1.0 <25 1.1 3.9 3.4 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <10 <20 <50 P-9 (SURF) <1.0 <1.0 <1.0 2,100 <1.0 53 120 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 13 <1.0 <10 <20 <50 P-9 (SURF) DUPE <10 <10 <10 1,800 <10 47 120 <10 <10 <10 <10 <10 <10 <10 <10 8.3J <10 <100 <200 <500 P-9 (1-1.5’) <1.0 <1.0 <1.0 38 0.35J 3.9 12 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <10 <20 <50 P-10 (SURF) <1.0 <1.0 <1.0 13,000 <1.0 39 160 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 21 57 <1.0 <10 <20 <50 P-10 (1-1.5’) <1.0 <1.0 <1.0 40 <1.0 1.4 4.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <10 <20 <50 P-10 (1-1.5’) DUPE <1.0 <1.0 <1.0 38 <1.0 1.9 4.8 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 1.0 <1.0 <10 <20 <50 P-11 (SURF) <1.0 <1.0 <1.0 930 <1.0 35 93 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 4.0 <1.0 <10 <20 <50 P-11 (1-1.5’) <1.0 <1.0 <1.0 95 <1.0 12 24 0.53J <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 1.8 <1.0 <10 <20 <50 P-12 (SURF) <1.0 <1.0 <1.0 110 <1.0 12 18 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 1.2 <1.0 <10 <20 <50 P-12 (1-1.5’) <1.0 <1.0 <1.0 <25 0.41J 2.7 6.3 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <10 <20 <50 P-14 (SURF) <1.0 <1.0 <1.0 60 2.2 97 61 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 0.25J 0.71J <1.0 <10 <20 <50 P-14 (1-1.5’) <1.0 <1.0 <1.0 <25 0.47J 14 9.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <10 <20 <50 P-15 (SURF) <1.0 <1.0 0.49J 1,500 <1.0 410 160 6.8 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 11 <1.0 <10 <20 <50 P-15 (1-1.5’) <1.0 <1.0 <1.0 <25 9.3 50 36 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 1.4 <1.0 <10 <20 <50 HHRA NOTE #3 430
RSLs 39 -- 570 1,700 2,300 2,000 1,900 34 -- -- -- -- -- -- 130 70 -- 210 -- 490

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Table 4-1 - Soil Results for OCPs (cont’)
(results in µg/kg)
Sample
Identification
Aldrin
(a,b,d)-BHC
Gamma-BHC
Chlordane-
technical
DDD
DDE
DDT
Dieldrin
Endosulfan I
Endosulfan II
Endosulfan
Sulfate
Endrin
Endrin
Aldehyde
Endrin Ketone
Heptachlor
Heptachlor
Epoxide
Methoxychlor
Hexachloro
benzene
Hexachloro
cyclopentadiene
Toxaphene
P-15 (1-1.5’) DUPE <1.0 <1.0 <1.0 <25 8.9 50 31 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 1.5 <1.0 <10 <20 <50 P-16 (SURF) <1.0 <1.0 <1.0 170 3.3 4.5 18 2.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 1.3 <1.0 <10 <20 <50 P-25 (SURF) <1.0 <1.0 <1.0 <25 0.49J 62 25 0.43J <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <10 <20 <50 P-25 (1-1.5’) <1.0 <1.0 <1.0 <25 <1.0 2.6 2.7 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <10 <20 <50 P-26 (SURF) <1.0 <1.0 <1.0 <25 <1.0 43 23 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <10 <20 <50 P-26 (1-1.5’) <1.0 <1.0 <1.0 <25 <1.0 3.1 1.8 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <10 <20 <50 P-27 (SURF) <1.0 <1.0 <1.0 <25 2.8 150 62 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <10 <20 <50 P-27 (1-1.5’) <1.0 <1.0 <1.0 <25 <1.0 1.3 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <10 <20 <50 SSI (October 2015)
SS-6A (SURF) <1.0 <1.0 <1.0 <25 0.54J 12 6.5 0.42J <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 0.65J <1.0 <1.0 <10 <20 <50 SS-6A (1-1.5’) <1.0 <1.0 <1.0 <25 0.53J 6.9 4.6 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <10 <20 <50 SS-6B (SURF) <2.0 <2.0 <2.0 <50 1.2J 25 15 1.5 J <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <20 <40 410 SS-6B (1-1.5’) <1.0 <1.0 <1.0 <25 <1.0 0.98J 1.4 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <10 <20 <50 SS-6C (SURF) <1.0 <1.0 <1.0 <25 1.2 17 16 0.85J <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 0.35J <1.0 <10 <20 <50 SS-6C (1-1.5’) <1.0 <1.0 <1.0 <25 <1.0 5.0 2.1 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <10 <20 <50 SS-6D (SURF) <1.0 <1.0 <1.0 37 0.87J 11 14 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 0.39J <1.0 <10 <20 <50 SS-6D (1-1.5’) <1.0 <1.0 <1.0 <25 <1.0 4.2 1.3 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <10 <20 <50 SS-6E (SURF) <1.0 <1.0 <1.0 44 2.5 21 20 0.54J <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 1.0 <1.0 <10 <20 <50 SS-6E (1-1.5’) <1.0 <1.0 <1.0 <25 <1.0 0.45J <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 0.26 J <1.0 <1.0 <10 <20 <50 P-4A (2-2.5’) <1.0 <1.0 <1.0 20J <1.0 0.99J 1.2 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <10 <20 <50 P-10A (SURF) <1.0 <1.0 <1.0 130 1.6 6.5 7.3 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <10 <20 <50 P-10A (1-1.5’) <1.0 <1.0 <1.0 <25 <1.0 2.2 7.8 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 0.29 J <1.0 <1.0 <10 <20 <50 P-10B (SURF) <1.0 <1.0 <1.0 500 1.6 7.8 8.5 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 0.94 J 5.2 <1.0 <10 <20 <50 P-10B (1-1.5’) <1.0 <1.0 <1.0 <25 <1.0 1.0 1.7 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 0.23J <1.0 <10 <20 <50 P-10C (SURF) <1.0 <1.0 <1.0 1,700 <1.0 5.3 5.8 <1.0 <1.0 <1.0 <1.0 2.1 <1.0 <1.0 0.76 J 19 <1.0 <10 <20 <50 P-10C (1-1.5’) <1.0 <1.0 <1.0 410 2.8 6.1 4.3 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 4.8 <1.0 <10 <20 <50 P-10D (SURF) <1.0 <1.0 <1.0 4,800 <1.0 28 81 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 5.4 30 <1.0 <10 <20 <50 P-10D (1-1.5’) <1.0 <1.0 <1.0 31 0.33J 2.7 7.4 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 0.28J <1.0 <10 <20 <50 P-11A (SURF) <1.0 <1.0 <1.0 100 1.8 12 27 0.76J <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 1.2J <1.0 <10 <20 <50 P-11A (1-1.5’) <1.0 <1.0 <1.0 83 2.1 6.9 14 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <10 <20 <50 HHRA NOTE #3 430
RSLs 39 -- 570 1,700 2,300 2,000 1,900 34 -- -- -- -- -- -- 130 70 -- 210 -- 490

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4-10
Table 4-1 - Soil Results for OCPs (cont’)
(results in µg/kg)
Sample
Identification
Aldrin
(a,b,d)-BHC
Gamma-BHC
Chlordane-
technical
DDD
DDE
DDT
Dieldrin
Endosulfan I
Endosulfan II
Endosulfan
Sulfate
Endrin
Endrin
Aldehyde
Endrin Ketone
Heptachlor
Heptachlor
Epoxide
Methoxychlor
Hexachloro
benzene
Hexachloro
cyclopentadiene
Toxaphene
P-11B (SURF) <1.0 <1.0 <1.0 650 4.3 26 55 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 4.7 <1.0 <10 <20 <50 P-11B (SURF) DUPE <1.0 <1.0 <1.0 470 4.4 21 44 1.7 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 0.71J 3.8 <1.0 <10 <20 <50 P-11B (1-1.5’) <1.0 <1.0 <1.0 58 <1.0 3.8 9.8 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 0.32J 0.55 J <1.0 <10 <20 <50 P-15A (SURF) <1.0 <1.0 <1.0 190 6.4 150 55 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 2.4 <1.0 <10 <20 <50 P-15A (1-1.5’) <1.0 <1.0 <1.0 <25 1.7 9.2 7.1 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 0.34J <1.0 <1.0 <10 <20 <50 P-15A (1-1.5’) DUPE <1.0 <1.0 <1.0 <25 0.99J 6.2 6.5 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <10 <20 <50 Phase II (July 2014)
SS-1* <9.9 <9.9 <9.9 <200 21 320 87 <9.9 <9.9 9.9 <9.9 <9.9 <9.9 <9.9 <9.9 <9.9 <9.9 -- -- <200 SS-2* <2.0 <2.0 <2.0 <40 26 280 33 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 -- -- <40 SS-3* <2.0 <2.0 <2.0 <39 26 280 33 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 -- -- <39 SS-4* <2.0 <2.0 <2.0 180 31 230 26 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 -- -- <39 SS-5* <20 400 280 2,800 26 360 91 <20 <20 <20 <20 <20 <20 <20 <20 <20 <20 -- -- <400 SS-6* <2.0 86 50 520 28 55 26 8.7 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 12 <2.0 -- -- <40 SS-7* <2.0 5.9 3.7 <40 29 240 26 2.9 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 -- -- <40 SS-8* <2.0 <2.0 <2.0 <40 21 120 14 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 -- -- <40 SS-9* <2.0 7.0 5.5 67 48 260 29 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 -- -- <40 SS-10* <2.0 <2.0 <2.0 <40 31 220 16 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 -- -- <40 SS-11* <2.0 3.2 3.5 <39 32 180 21 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 -- -- <39 SS-12* <9.7 25 31 240 17 150 60 <9.7 <9.7 <9.7 <9.7 <9.7 <9.7 <9.7 <9.7 <9.7 <9.7 -- -- <190 SS-13* <2.0 15 12 110 21 42 14 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 -- -- <40 SS-14* <9.8 <9.8 <9.8 <200 28 410 88 <9.8 <9.8 <9.8 <9.8 <9.8 <9.8 <9.8 <9.8 <9.8 <9.8 -- -- <200 SS-15* <2.0 3.5 3.9 <40 47 190 26 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 -- -- <40 SS-16* <1.9 <1.9 <1.9 <39 <1.9 8.8 <1.9 <1.9 <1.9 <1.9 <1.9 <1.9 <1.9 <1.9 <1.9 <1.9 <1.9 -- -- <39 HHRA NOTE #3 430
RSLs 39 -- 570 1,700 2,300 2,000 1,900 34 -- -- -- -- -- -- 130 70 -- 210 -- 490 Notes:
µ g / k g – m i c r o g r a m s p e r k i l o g r a m * Surface soil sample (Cornerstone, June 2014)
-- Not reported
HHRA – Human Health Risk Assessment Note #3, Table 1 (May 2015).

R S L – U . S . EPA Regional Screening Levels (June, 2015) 3 , 700 – above screening level

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4-11
Table 4-2 - Soil Results for Arsenic and Lead
(results in mg/kg)
Sample
Identification Arsenic Lead
U.S. EPA Method 6020 6020
PEA (July 2015)
SS-6A (1-1.5’) 11 --
AS-1 (SURF) 13 --
AS-2 (SURF) 7.2 --
AS-3 (SURF) 5.7 --
P-7 (SURF) -- 39
P-7 (1-1.5’) -- 79
P-10 (SURF) -- 29
P-10 (1-1.5’) -- 9.3
P-11 (SURF) -- 24
P-11 (1-1.5’) -- 13
P-13 (SURF) -- 92
P-13 (1-1.5’) -- 17
P-14 (SURF) -- 36
P-15 (SURF) -- 220
P-17 (SURF) -- 310
P-17 (SURF) DUP -- 310
P-17 (1-1.5’) -- 43
P-18 (SURF) -- 93
P-18 (1-1.5’) -- 17
P-19 (SURF) -- 180
P-19 (1-1.5’) -- 31
P-19 (1-1.5’) DUPE -- 27
P-20 (SURF) -- 35
P-20 (1-1.5’) -- 11
P-21 (SURF) -- 40
P-21 (1-1.5’) -- 9.4
P-23 (SURF) -- 42
P-23 (1-1.5’) -- 13
Screening Level 12A 80B

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Table 4-2 - Soil Results for Arsenic and Lead (cont’)
(results in mg/kg)

Sample
Identification Arsenic Lead
U.S. EPA Method 6020 6020
P-24 (SURF) -- 83
P-24 (1-1.5’) -- 10
P-24 (1-1.5’) DUP -- 9.0
P-25 (SURF) -- 47
P-25 (1-1.5’) -- 9.8
P-26 (SURF) -- 29
P-26 (1-1.5’) -- 12
P-27 (SURF) -- 64
P-27 (SURF) DUP -- 39
P-27 (1-1.5’) -- 14
P-28 (SURF) -- 150
P-28 (1-1.5’) -- 12
SSI (October 2015)
P-13A (SURF) -- 68
P-13B (SURF) -- 62
P-15A (SURF) -- 31
P-17A (SURF) -- 73
P-17A (SURF) DUPE -- 60
P-28A (SURF) -- 65
P-29 (SURF) -- 39
P-29A (SURF) -- 36
P-30 (SURF) -- 65
P-31 (SURF) -- 41
P-32 (SURF) -- 42
P-33 (SURF) -- 49
Screening Level 12A 80B

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Table 4-2 - Soil Results for Arsenic and Lead (cont’)
(results in mg/kg)

Sample
Identification Arsenic Lead
U.S. EPA Method 6020 6020
Phase II (June 2014)
SS-1 11 40
SS-2 12 100
SS-3 8.7 20
SS-4 7.3 23
SS-5 13 51
SS-6 15 75
SS-7 8.0 20
SS-8 7.8 18
SS-9 7.8 42
SS-10 8.9 27
SS-11 6.4 19
SS-12 8.2 72
SS-13 5.2 52
SS-14 8.9 33
SS-15 6.6 22
SS-16 6.8 9.0
Screening Level 12A 80B

Notes:

mg/kg milligrams per kilogram
‘--‘ Not analyzed
150 Above screening level
A School Site Screening level from DTSC Guidance (4/30/08) B OEHHA Leadspread Version 8

November 2015
Project No. 1401-2172

SSI Sum Rpt_Cupertino
5-1

5.0 RISK ASSESSMENT
The chemical of potential concern ( COCs) used in the human health screening -level evaluation for the Project Site included those compounds that were further evaluated as part of the PEA (pesticides and metals). Therefore, the following COPCs in soil were evaluated:
• Organochlorine Pesticides: Chlordane, DDD, DDE, DDT, Dieldrin, gamma-BHC (lindane), Endrin, Heptachlor, Heptachlor Epoxide, and Toxaphene • Metals: Lead
The DTSC-modified screening levels or the U.S. EPA RSLs (if DTSC-modified screening levels were not available) were used to conduct a screening -level human health risk assessment using the residential land-use scenario. Carcinogenic screening levels are typically based on a predicted excess long -term cancer risk of one in a million. Non -carcinogenic screening levels are based on maintaining the daily COC intake below the level at which deleterious health effects are considered possible.

In accordance with PEA guidance documents and DTSC’s Human Health Risk Assessment (HHRA) Note No.3, dated May 2015, the maximum detected chemical concentrations in soil were evaluated as potential exposure point concentrations (EPCs). The EPCs were compared to their respective screening levels. The ratio of an EPC to the corresponding carcinogenic screening level was multiplied by 1E -06 to estimate the chemical- specific screening cancer risk. For noncarcinogens, the chemical -specific hazard index is the ratio of the EPC to the screening level based on noncarcinogenic effects. The sums of the chemical-specific screening cancer risk and screening hazard index are the cumulative screening cancer risk and hazard index, respectively.

The total risk from OCPs identified in soils at the Project Site was estimated to be

3.3 x 10
-5, which provides an increased cancer risk of greater than 1 in 1,000,000 (>10-6). The total health hazard from OCPs identified in soils at the Project Site was estimated to be 0.46, which does not present an increased health hazard (i.e., >1). Therefore, a response action to reduce or eliminate the pesticides identified in surficial soils at the Project Site is recommended.

The results of the screening-level evaluation are presented in Table 5-1.

Lead concentrations ranged from 9.0 mg/kg to 310 mg/kg in soil samples collected across the Project Site which exceeds DTSC’s screening level of 80 mg/kg. A risk assessment was performed using the DTSC lead risk assessment spreadsheet model (LeadSpread Version 8). Based on the LeadSpread output, exposure to the lead concentrations detected at the Project Site will result in a 90th percentile blood lead concentration of 8.0 µg/dl in children which exceeds OEHHA’s blood toxicity level of 1 µg/l. Therefore, a response action to reduce or eliminate the lead-impacted soil is recommended. A copy of the LeadSpread Risk Assessment Spreadsheet is presented in Appendix D.

Table 5‐1
Soil Exposure Screening Evaluation
Sedgwick Elementary School Expansion Project
Cupertino Union School District
Screening
Level (mg/kg) Source Cancer
Risk
Screening
Level (mg/kg) Source Hazard
Index
Chlordane 13 0.43 HHRA Note #3 3.02E‐05 34 RSL 3.82E‐01 DDD 0.0093 2.3 RSL 4.04E‐09 37 Surrogate RSL 2.51E‐04
DDE 0.41 2 RSL 2.05E‐07 37 Surrogate RSL 1.11E‐02
DDT 0.26 1.9 RSL 1.37E‐07 37 RSL 7.03E‐03
Dieldrin 0.0068 0.034 RSL 2.00E‐07 3.2 RSL 2.13E‐03
Endrin 0.0027 nc RSL NA 19 RSL 1.42E‐04
g‐BHC (lindane) 0.00049 0.57 RSL 8.60E‐10 21 RSL 2.33E‐05 Heptachlor 0.021 0.13 RSL 1.62E‐07 39 RSL 5.38E‐04
Heptachlor Epoxide 0.057 0.07 RSL 8.14E‐07 1 RSL 5.70E‐02 Toxaphene 0.41 0.49 RSL 8.37E‐07 NE NA NA
Total Risk: 3.26E‐05 Total Hazard: 4.61E‐01
Notes:

COPC = chemical of potential concern
EPC = exposure point concentration
Exposure Point Concentration = maximum detected concentration in soil samples collected at the sit e
HHRA = Human Health Risk Assessment Note #3, Table 1 (DTSC HERO, May 2015) RSL = regional screening level for residential soil (U.S.EPA June 2015) mg/kg = milligrams per kilogram
Surrogate RSL = RSL not established for DDD, DDE. RSL for DDT was used as a surrogate value. nc = non‐carcinogenic
NE = not established
NA = not applicable
COPC
Exposure‐Point
Concentration
(mg/kg)
Carcinogenic Risk Non‐carcinogenic Hazard
5-2

November 2015
Project No. 1401-2172

SSI Sum Rpt_Cupertino
6-1

6.0 CONCLUSIONS AND RECOMMENDATIONS
The organochlorine pesticides chlordane, DDD, DDE, DDT, dieldri n, gamma-BHC (lindane), endrin heptachlor, heptachlor epoxide, and toxaphene were identified in surface soils at the Project Site. Using the highest concentration for each COC identified at the Project Site, the total risk index was estimated to be 3.3 x 10 -5, which provides an increased cancer risk of greater than 1 in 1,000,000 (>10 -6). Chlordane is the predominant pesticide of concern with the impacted areas identified to be located at the north, west and southeast perimeters of the main residence structure. The estimated extent of pesticide-impacted soil identified at the Project Site is presented on Plate 6-1.

Concentrations of lead ranged from 9 to 310 mg/kg in surface soil samples collected at the Project Site, which exceeds DTSC’s screening level of 80 mg /kg. Additionally, using DTSC’s LeadSpread risk evaluation model, exposure to the lead c oncentrations identified at the Project Site could result in a 90th percentile blood lead concentration of 8.0 µg/dl in children, which exceeds OEHHA’s blood toxicity level of 1 µg/dl. The est imated extent of lead-impacted soil identified at the Project Site is presented on Plate 6-2.

Due to elevated concentrations of COCs identified in surface so il around existing structures located at the Project Site, Padre recommends further action to reduce or eliminate the potential impact of these contaminants. The recommended re medial action is excavation, transportation and off-site disposal at an appropriate landfill. The estimated quantity of OCP and lead-impacted soil is approximately 300 cubic yards.

November 2015
Project No. 1401-2172

SSI Sum Rpt_Cupertino
7-1

7.0 REFERENCES
Cornerstone Group, Phase I Environmental Site Assessment and Preliminary S oil Quality Evaluation, 10480 Finch Avenue, Cupertino, California, July 11, 2014.

Department of Toxic Substances Control, Interim Guidance, Evaluation of School Sites with Potential Contamination as a Result of Lead from Lead- Based-Paint, Organochlorine Pesticides from Temiticides, and Polychlorinated Biphenyls from Electrical Transformers, revised June 9, 2006.

Department of Toxic Substances Control, Interim Guidance for Sampling Agricultural Properties (Third Revision), August 7, 2008.

Department of Toxic Substances Control, Preliminary Environmental Assessment Guidance Manual, January 1994, Interim Final – Final October 2013.

Padre Associates, Inc., Preliminary Environmental Assessment, Sedgwick Elementary School Expansion Project, 10480 Finch Avenue, Cupertino, Santa Clara County, California , September 2015.

Padre Associates, Inc., Preliminary Environmental Assessment Workplan, Sedgwick Elementary School Expansion Project, 10480 Finch Avenue, Cupertino, Santa Clara County, California, May 2015.

Padre Associates, Inc., Technical Memorandum , Sedgwick Elementary School Expansion Project, 10480 Finch Avenue, Cupertino, Santa Clara County, California Cupertino Union School District, September 2015.

APPENDIX A

DTSC CORRESPONDANCE

APPENDIX B

QUALITY ASSURANCE PROJECT PLAN

May 2015
Project No. 1401-2171

B - 1

APPENDIX B

QUALITY ASSURANCE/QUALITY CONTROL
(QA/QC) PROCEDURES
The QA/QC procedures will be employed in both the field and the laboratory. QA/QC samples include the collection of equipment rins eate samples, field blank samples, and duplicate split samples.

FIELD QA/QC PROCEDURES
Field QA/QC procedures will be performed at the site and consist of the following measures:
• Chain-of-Custody (COC) forms will be used for sample submittal to the laboratory; and
• Daily information regarding sample collection will be recorded by Padre in Field Logbooks. Sample types, soil descriptions, sample identification numbers, and sample times will be collected and recorded on Field Data Sheets and in the Field Logbooks. Pages will be numbered, dated, and signed by the person performing data entry.

Field QA/QC samples will be collected and submitted for analysis along with the discrete soil samples using the following sampling frequency:
• Equipment blanks - One equipment rinsate blank per sample event; • Field blanks - One field blank sample per sample event; and • Field duplicates – Approximately 10% of the collected samples will be analyzed as duplicate samples for select chemical analyses.

Equipment Rinseate Blanks
An equipment rinseate blank (equipment blank) will be collected from the final water rinsed over equipment after cleaning activities have been performed. The equipment blank will be collected from non -dedicated (reusable) sampling equipment such as soil sampling tools.

The equipment blank will be analyzed for arsenic using the same analytical method used on the unique soil samples.

To collect an equipment blank sample, rinse water will be carefully poured over or through the recently cleaned equipment, and collected directly into an appropriate sample container held over a bucket. Equipment blank samples will be labeled and handled in the same manner as all other samples.

May 2015
Project No. 1401-2171

B - 2
Field Blanks
Field blank samples consist of a sample of the deionized water that was used to rinse sampling equipment during equipment cleaning activities. The purpose of the field blank sample is to evaluate the rinse water for compounds detected in the soil samples. A field blank sample will be collected by pouring rinse water into the appropriate sample container. The field blank will be analyzed for arsenic using the same analytical method used on the unique soil samples, and the field blank samples will be handled in the same manner as all other samples.

Duplicate Samples
Duplicate soil sample(s) will be analyzed in order to evaluate the analytical procedur es and methods employed by the laboratory. The field duplicate sample(s) will be selected from the original soil samples, and split by the laboratory. Duplicate soil samples will be analyzed for OCPs and lead.

Duplicate soil gas sample(s) will be collect ed immediately after the original sample, in separate sample containers, at the same location and depth. Duplicate soil gas samples will be analyzed for VOCs.

Laboratory QA/QC Procedures
Laboratory QA/QC procedures include the following:
• Laboratory analyses will be performed within the required holding time for all samples;
• Appropriate minimum reporting limits (RLs) will be used for each analysis; • A state -certified hazardous waste testing laboratory will conduct the required analysis;
• The laboratory will provide the following information for each sample:
- Method blank data;
- Surrogate recovery, instrument tuning, and calibration data; and - Signed laboratory reports including the sample designation, date of sample collection, date of sample analysis, laboratory analytical method employed, sample volume, and the minimum RL.

To determine whether Quality Assurance/Quality Control (QA/QC) requirements for sampling and analysis were met for the project, and to determine whether the data are usable for risk assessment purposes, a cursory data validation review will be done on the data summary package provided by the laboratory. This review will include an evaluation of chain-of- custody documentation, holding times, reporting limits, precision and accuracy of goals,

May 2015
Project No. 1401-2171

B - 3
representativeness, and completeness of the data. QA/QC requirements that are not met will be evaluated in the ‘uncertainty’ portion of the risk assessment. Documentation of the data validation review will be included with the PEA report.

Detection Limits
Detection limits for OCPs and metals that will be met by the analytical laboratory are listed in the following DTSC document(s), and are attached:
• DTSC’s Advisory – Active Soil gas Investigations, dated April 2012, and • DTSC, Interim Guidance, Evaluation of School Sites with Potential Contamination as a Result of Lead from Lead- Based-Paint, Organochlorine Pesticides from Temiticides, and Polychlorinated Biphenyls from Electrical Transformers , revised June 9, 2006.

Padre proposes to utilize McCampbell Analytical Inc. (McCampbell) located in Pittsburg, California to provide the required chemical analyses of collected soil , soil gas, and water samples. McCampbell is certified (No. 1644) by the California State Environmental Laboratory Accreditation Program Branch to provide the required chemical analyses.

APPENDIX C

ANALYTICAL LABORATORY REPORTS AND CHAIN-OF CUSTODYS

WorkOrder:

Report Created for: Padre Associates. Inc.
555 University Ave., Suite 110
Sacramento, CA 95825
Project Contact: Alan J. Klein
Project Name: 1401-2172; Cupertino (Sedgwick SSI)
Project P.O.:

Project Received: 10/28/2015
Analytical Report reviewed & approved for release on 11/05/2015 by:

Angela Rydelius,
Laboratory Manager
1510A30
The report shall not be reproduced except in full, without the written approval of the laboratory.

The analytical results relate only to the items tested. Results reported conform to the most current NELAP standards, where applicable, unless otherwise stated in the case narrative.

Amended: 11/10/2015
Analytical Report
1534 Willow Pass Rd. Pittsburg, CA 94565 ♦ TEL: (877) 252-9262 ♦ FAX: (925) 252-9269 ♦ www.mccampbell.com NELAP: 4033ORELAP ♦ ELAP: 1644 ♦ ISO/IEC: 17025:2005 ♦ WSDE: C972-11 ♦ ADEC: UST-098 ♦ UCMR3 McCampbell Analytical, Inc.
"When Quality Counts"

Page 1 of 57 ends

Glossary of Terms & Qualifier Definitions
Client: Padre Associates. Inc.

Project: 1401-2172; Cupertino (Sedgwick SSI)
WorkOrder: 1510A30
McCampbell Analytical, Inc.
1534 Willow Pass Road, Pittsburg, CA 94565-1701
Toll Free Telephone: (877) 252-9262 / Fax: (925) 252-9269 http://www.mccampbell.com / E-mail: [email protected]"When Quality Counts" Glossary Abbreviation
95% Interval 95% Confident Interval
DF Dilution Factor
DI WET (DISTLC) Waste Extraction Test using DI water
DISS Dissolved (direct analysis of 0.45 µm filtered and acidified water sample) DLT Dilution Test
DUP Duplicate
EDL Estimated Detection Limit
ITEF International Toxicity Equivalence Factor
LCS Laboratory Control Sample
MB Method Blank
MB % Rec % Recovery of Surrogate in Method Blank, if applicable MDL Method Detection Limit
ML Minimum Level of Quantitation
MS Matrix Spike
MSD Matrix Spike Duplicate
N/A Not Applicable
ND Not detected at or above the indicated MDL or RL
NR Data Not Reported due to matrix interference or insufficient sample amount.

PDS Post Digestion Spike
PDSD Post Digestion Spike Duplicate
PF Prep Factor
RD Relative Difference
RL Reporting Limit (The RL is the lowest calibration standard in a multipoint calibration.) RPD Relative Percent Deviation
RRT Relative Retention Time
SPK Val Spike Value
SPKRef Val Spike Reference Value
SPLP Synthetic Precipitation Leachate Procedure
TCLP Toxicity Characteristic Leachate Procedure
TEQ Toxicity Equivalents
WET (STLC) Waste Extraction Test (Soluble Threshold Limit Concentration) Analytical Qualifiers
J Result is less than the RL/ML but greater than the MDL. The reported concentration is an estimated value.

Quality Control Qualifiers
F8 MS/MSD recovery and/or RPD was out of acceptance criteria; PDS validated the prep batch. If PDS recovery was out of acceptance criteria, DLT validated the prep batch.

Page 2 of 57 ends

Analytical Report
McCampbell Analytical, Inc.
1534 Willow Pass Road, Pittsburg, CA 94565-1701
Toll Free Telephone: (877) 252-9262 / Fax: (925) 252-9269 http://www.mccampbell.com / E-mail: [email protected]"When Quality Counts" Client: Padre Associates. Inc.

Project: 1401-2172; Cupertino (Sedgwick SSI)
Date Received: 10/28/15 18:33
Date Prepared: 10/28/15
WorkOrder: 1510A30
Extraction Method: SW3550B
Analytical Method: SW8081A
Unit: mg/kg
Organochlorine Pesticides (Basic Target List)
P-4A (2-2.5') 1510A30-001A Soil 10/27/2015 09:00 GC22 112155 Analytes Result Qualifiers DF Date AnalyzedRLMDL
Client ID Lab ID Matrix Date Collected Instrument Batch ID Aldrin ND 0.00027 0.0010 1 11/03/2015 20:07
a-BHC ND 0.00010 0.0010 1 11/03/2015 20:07
b-BHC ND 0.00025 0.0010 1 11/03/2015 20:07
d-BHC ND 0.00037 0.0010 1 11/03/2015 20:07
g-BHC ND 0.000097 0.0010 1 11/03/2015 20:07
Chlordane (Technical) 0.020 J 0.016 0.025 1 11/03/2015 20:07 a-Chlordane 0.0025 0.00047 0.0010 1 11/03/2015 20:07 g-Chlordane 0.0015 0.00021 0.0010 1 11/03/2015 20:07 p,p-DDD ND 0.00014 0.0010 1 11/03/2015 20:07
p,p-DDE 0.00099 J 0.00032 0.0010 1 11/03/2015 20:07
p,p-DDT 0.0012 0.00043 0.0010 1 11/03/2015 20:07
Dieldrin ND 0.00033 0.0010 1 11/03/2015 20:07
Endosulfan I ND 0.00065 0.0010 1 11/03/2015 20:07
Endosulfan II ND 0.00020 0.0010 1 11/03/2015 20:07
Endosulfan sulfate ND 0.00063 0.0010 1 11/03/2015 20:07 Endrin ND 0.00042 0.0010 1 11/03/2015 20:07
Endrin aldehyde ND 0.00020 0.0010 1 11/03/2015 20:07
Endrin ketone ND 0.00013 0.0010 1 11/03/2015 20:07
Heptachlor ND 0.00021 0.0010 1 11/03/2015 20:07
Heptachlor epoxide ND 0.00020 0.0010 1 11/03/2015 20:07 Hexachlorobenzene ND 0.00027 0.010 1 11/03/2015 20:07
Hexachlorocyclopentadiene ND 0.00040 0.020 1 11/03/2015 20:07 Methoxychlor ND 0.00089 0.0010 1 11/03/2015 20:07
Toxaphene ND 0.035 0.050 1 11/03/2015 20:07
Surrogates REC (%) Limits
Analyst(s): CK
Decachlorobiphenyl 86 70-130 11/03/2015 20:07
Angela Rydelius, Lab Manager
CDPH ELAP 1644 ♦ NELAP 4033ORELAP
(Cont.)

Page 3 of 57 ends

Project: 1401-2172; Cupertino (Sedgwick SSI)
Date Received: 10/28/15 18:33
Date Prepared: 10/28/15
WorkOrder: 1510A30
Extraction Method: SW3550B
Analytical Method: SW8081A
Unit: mg/kg
Organochlorine Pesticides (Basic Target List)
P-10A (SURF) 1510A30-003A Soil 10/27/2015 10:00 GC23 112155 Analytes Result DF Date AnalyzedRLMDL
Client ID Lab ID Matrix Date Collected Instrument Batch ID Aldrin ND 0.00027 0.0010 1 10/31/2015 17:17
a-BHC ND 0.00010 0.0010 1 10/31/2015 17:17
b-BHC ND 0.00025 0.0010 1 10/31/2015 17:17
d-BHC ND 0.00037 0.0010 1 10/31/2015 17:17
g-BHC ND 0.000097 0.0010 1 10/31/2015 17:17
Chlordane (Technical) 0.13 0.016 0.025 1 10/31/2015 17:17 a-Chlordane 0.015 0.00047 0.0010 1 10/31/2015 17:17
g-Chlordane 0.0086 0.00021 0.0010 1 10/31/2015 17:17 p,p-DDD 0.0016 0.00014 0.0010 1 10/31/2015 17:17
p,p-DDE 0.0065 0.00032 0.0010 1 10/31/2015 17:17
p,p-DDT 0.0073 0.00043 0.0010 1 10/31/2015 17:17
Dieldrin ND 0.00033 0.0010 1 10/31/2015 17:17
Endosulfan I ND 0.00065 0.0010 1 10/31/2015 17:17
Endosulfan II ND 0.00020 0.0010 1 10/31/2015 17:17
Endosulfan sulfate ND 0.00063 0.0010 1 10/31/2015 17:17 Endrin ND 0.00042 0.0010 1 10/31/2015 17:17
Endrin aldehyde ND 0.00020 0.0010 1 10/31/2015 17:17
Endrin ketone ND 0.00013 0.0010 1 10/31/2015 17:17
Heptachlor ND 0.00021 0.0010 1 10/31/2015 17:17
Heptachlor epoxide ND 0.00020 0.0010 1 10/31/2015 17:17 Hexachlorobenzene ND 0.00027 0.010 1 10/31/2015 17:17
Hexachlorocyclopentadiene ND 0.00040 0.020 1 10/31/2015 17:17 Methoxychlor ND 0.00089 0.0010 1 10/31/2015 17:17
Toxaphene ND 0.035 0.050 1 10/31/2015 17:17
Surrogates REC (%) Limits
Analyst(s): SS
Decachlorobiphenyl 78 70-130 10/31/2015 17:17
Angela Rydelius, Lab Manager
CDPH ELAP 1644 ♦ NELAP 4033ORELAP
(Cont.)

Page 4 of 57 ends

Project: 1401-2172; Cupertino (Sedgwick SSI)
Date Received: 10/28/15 18:33
Date Prepared: 10/28/15
WorkOrder: 1510A30
Extraction Method: SW3550B
Analytical Method: SW8081A
Unit: mg/kg
Organochlorine Pesticides (Basic Target List)
P-10A (1-1.5') 1510A30-004A Soil 10/27/2015 10:03 GC22 112155 Analytes Result Qualifiers DF Date AnalyzedRLMDL
Client ID Lab ID Matrix Date Collected Instrument Batch ID Aldrin ND 0.00027 0.0010 1 11/03/2015 06:54
a-BHC ND 0.00010 0.0010 1 11/03/2015 06:54
b-BHC ND 0.00025 0.0010 1 11/03/2015 06:54
d-BHC ND 0.00037 0.0010 1 11/03/2015 06:54
g-BHC ND 0.000097 0.0010 1 11/03/2015 06:54
Chlordane (Technical) ND 0.016 0.025 1 11/03/2015 06:54 a-Chlordane ND 0.00047 0.0010 1 11/03/2015 06:54
g-Chlordane 0.00023 J 0.00021 0.0010 1 11/03/2015 06:54 p,p-DDD ND 0.00014 0.0010 1 11/03/2015 06:54
p,p-DDE 0.0022 0.00032 0.0010 1 11/03/2015 06:54
p,p-DDT 0.0078 0.00043 0.0010 1 11/03/2015 06:54
Dieldrin ND 0.00033 0.0010 1 11/03/2015 06:54
Endosulfan I ND 0.00065 0.0010 1 11/03/2015 06:54
Endosulfan II ND 0.00020 0.0010 1 11/03/2015 06:54
Endosulfan sulfate ND 0.00063 0.0010 1 11/03/2015 06:54 Endrin ND 0.00042 0.0010 1 11/03/2015 06:54
Endrin aldehyde ND 0.00020 0.0010 1 11/03/2015 06:54
Endrin ketone ND 0.00013 0.0010 1 11/03/2015 06:54
Heptachlor 0.00029 J 0.00021 0.0010 1 11/03/2015 06:54 Heptachlor epoxide ND 0.00020 0.0010 1 11/03/2015 06:54 Hexachlorobenzene ND 0.00027 0.010 1 11/03/2015 06:54
Hexachlorocyclopentadiene ND 0.00040 0.020 1 11/03/2015 06:54 Methoxychlor ND 0.00089 0.0010 1 11/03/2015 06:54
Toxaphene ND 0.035 0.050 1 11/03/2015 06:54
Surrogates REC (%) Limits
Analyst(s): CK
Decachlorobiphenyl 78 70-130 11/03/2015 06:54
Angela Rydelius, Lab Manager
CDPH ELAP 1644 ♦ NELAP 4033ORELAP
(Cont.)

Page 5 of 57 ends

Project: 1401-2172; Cupertino (Sedgwick SSI)
Date Received: 10/28/15 18:33
Date Prepared: 10/28/15
WorkOrder: 1510A30
Extraction Method: SW3550B
Analytical Method: SW8081A
Unit: mg/kg
Organochlorine Pesticides (Basic Target List)
P-10B (1-1.5') 1510A30-006A Soil 10/27/2015 10:15 GC22 112155 Analytes Result Qualifiers DF Date AnalyzedRLMDL
Client ID Lab ID Matrix Date Collected Instrument Batch ID Aldrin ND 0.00027 0.0010 1 11/03/2015 09:10
a-BHC ND 0.00010 0.0010 1 11/03/2015 09:10
b-BHC ND 0.00025 0.0010 1 11/03/2015 09:10
d-BHC ND 0.00037 0.0010 1 11/03/2015 09:10
g-BHC ND 0.000097 0.0010 1 11/03/2015 09:10
Chlordane (Technical) ND 0.016 0.025 1 11/03/2015 09:10 a-Chlordane 0.0015 0.00047 0.0010 1 11/03/2015 09:10 g-Chlordane 0.0012 0.00021 0.0010 1 11/03/2015 09:10 p,p-DDD ND 0.00014 0.0010 1 11/03/2015 09:10
p,p-DDE 0.0010 0.00032 0.0010 1 11/03/2015 09:10
p,p-DDT 0.0017 0.00043 0.0010 1 11/03/2015 09:10
Dieldrin ND 0.00033 0.0010 1 11/03/2015 09:10
Endosulfan I ND 0.00065 0.0010 1 11/03/2015 09:10
Endosulfan II ND 0.00020 0.0010 1 11/03/2015 09:10
Endosulfan sulfate ND 0.00063 0.0010 1 11/03/2015 09:10 Endrin ND 0.00042 0.0010 1 11/03/2015 09:10
Endrin aldehyde ND 0.00020 0.0010 1 11/03/2015 09:10
Endrin ketone ND 0.00013 0.0010 1 11/03/2015 09:10
Heptachlor ND 0.00021 0.0010 1 11/03/2015 09:10
Heptachlor epoxide 0.00023 J 0.00020 0.0010 1 11/03/2015 09:10 Hexachlorobenzene ND 0.00027 0.010 1 11/03/2015 09:10
Hexachlorocyclopentadiene ND 0.00040 0.020 1 11/03/2015 09:10 Methoxychlor ND 0.00089 0.0010 1 11/03/2015 09:10
Toxaphene ND 0.035 0.050 1 11/03/2015 09:10
Surrogates REC (%) Limits
Analyst(s): CK
Decachlorobiphenyl 82 70-130 11/03/2015 09:10
Angela Rydelius, Lab Manager
CDPH ELAP 1644 ♦ NELAP 4033ORELAP
(Cont.)

Page 6 of 57 ends

Project: 1401-2172; Cupertino (Sedgwick SSI)
Date Received: 10/28/15 18:33
Date Prepared: 10/28/15
WorkOrder: 1510A30
Extraction Method: SW3550B
Analytical Method: SW8081A
Unit: mg/kg
Organochlorine Pesticides (Basic Target List)
P-10C (SURF) 1510A30-007A Soil 10/27/2015 09:47 GC23 112155 Analytes Result Qualifiers DF Date AnalyzedRLMDL
Client ID Lab ID Matrix Date Collected Instrument Batch ID Aldrin ND 0.00027 0.0010 1 11/02/2015 22:12
a-BHC ND 0.00010 0.0010 1 11/02/2015 22:12
b-BHC ND 0.00025 0.0010 1 11/02/2015 22:12
d-BHC ND 0.00037 0.0010 1 11/02/2015 22:12
g-BHC ND 0.000097 0.0010 1 11/02/2015 22:12
Chlordane (Technical) 1.7 0.16 0.25 10 11/04/2015 12:56 a-Chlordane 0.18 0.00047 0.0010 1 11/02/2015 22:12
g-Chlordane 0.13 0.00021 0.0010 1 11/02/2015 22:12
p,p-DDD ND 0.00014 0.0010 1 11/02/2015 22:12
p,p-DDE 0.0053 0.00032 0.0010 1 11/02/2015 22:12
p,p-DDT 0.0058 0.00043 0.0010 1 11/02/2015 22:12
Dieldrin ND 0.00033 0.0010 1 11/02/2015 22:12
Endosulfan I ND 0.00065 0.0010 1 11/02/2015 22:12
Endosulfan II ND 0.00020 0.0010 1 11/02/2015 22:12
Endosulfan sulfate ND 0.00063 0.0010 1 11/02/2015 22:12 Endrin 0.0021 0.00042 0.0010 1 11/02/2015 22:12
Endrin aldehyde ND 0.00020 0.0010 1 11/02/2015 22:12
Endrin ketone ND 0.00013 0.0010 1 11/02/2015 22:12
Heptachlor 0.00076 J 0.00021 0.0010 1 11/02/2015 22:12 Heptachlor epoxide 0.019 0.00020 0.0010 1 11/02/2015 22:12 Hexachlorobenzene ND 0.00027 0.010 1 11/02/2015 22:12
Hexachlorocyclopentadiene ND 0.00040 0.020 1 11/02/2015 22:12 Methoxychlor ND 0.00089 0.0010 1 11/02/2015 22:12
Toxaphene ND 0.035 0.050 1 11/02/2015 22:12
Surrogates REC (%) Limits
Analyst(s): SS
Decachlorobiphenyl 83 70-130 11/02/2015 22:12
Angela Rydelius, Lab Manager
CDPH ELAP 1644 ♦ NELAP 4033ORELAP
(Cont.)

Page 7 of 57 ends

Project: 1401-2172; Cupertino (Sedgwick SSI)
Date Received: 10/28/15 18:33
Date Prepared: 10/28/15
WorkOrder: 1510A30
Extraction Method: SW3550B
Analytical Method: SW8081A
Unit: mg/kg
Organochlorine Pesticides (Basic Target List)
P-10C (1-1.5') 1510A30-008A Soil 10/27/2015 09:48 GC23 112155 Analytes Result DF Date AnalyzedRLMDL
Client ID Lab ID Matrix Date Collected Instrument Batch ID Aldrin ND 0.00027 0.0010 1 10/31/2015 21:39
a-BHC ND 0.00010 0.0010 1 10/31/2015 21:39
b-BHC ND 0.00025 0.0010 1 10/31/2015 21:39
d-BHC ND 0.00037 0.0010 1 10/31/2015 21:39
g-BHC ND 0.000097 0.0010 1 10/31/2015 21:39
Chlordane (Technical) 0.41 0.080 0.12 5 11/04/2015 04:12 a-Chlordane 0.042 0.00047 0.0010 1 10/31/2015 21:39
g-Chlordane 0.032 0.00021 0.0010 1 10/31/2015 21:39
p,p-DDD 0.0028 0.00014 0.0010 1 10/31/2015 21:39
p,p-DDE 0.0061 0.00032 0.0010 1 10/31/2015 21:39
p,p-DDT 0.0043 0.00043 0.0010 1 10/31/2015 21:39
Dieldrin ND 0.00033 0.0010 1 10/31/2015 21:39
Endosulfan I ND 0.00065 0.0010 1 10/31/2015 21:39
Endosulfan II ND 0.00020 0.0010 1 10/31/2015 21:39
Endosulfan sulfate ND 0.00063 0.0010 1 10/31/2015 21:39 Endrin ND 0.00042 0.0010 1 10/31/2015 21:39
Endrin aldehyde ND 0.00020 0.0010 1 10/31/2015 21:39
Endrin ketone ND 0.00013 0.0010 1 10/31/2015 21:39
Heptachlor ND 0.00021 0.0010 1 10/31/2015 21:39
Heptachlor epoxide 0.0048 0.00020 0.0010 1 10/31/2015 21:39 Hexachlorobenzene ND 0.00027 0.010 1 10/31/2015 21:39
Hexachlorocyclopentadiene ND 0.00040 0.020 1 10/31/2015 21:39 Methoxychlor ND 0.00089 0.0010 1 10/31/2015 21:39
Toxaphene ND 0.035 0.050 1 10/31/2015 21:39
Surrogates REC (%) Limits
Analyst(s): SS
Decachlorobiphenyl 84 70-130 10/31/2015 21:39
Angela Rydelius, Lab Manager
CDPH ELAP 1644 ♦ NELAP 4033ORELAP
(Cont.)

Page 8 of 57 ends

Project: 1401-2172; Cupertino (Sedgwick SSI)
Date Received: 10/28/15 18:33
Date Prepared: 10/28/15
WorkOrder: 1510A30
Extraction Method: SW3550B
Analytical Method: SW8081A
Unit: mg/kg
Organochlorine Pesticides (Basic Target List)
P-10D (1-1.5') 1510A30-010A Soil 10/27/2015 09:53 GC22 112155 Analytes Result Qualifiers DF Date AnalyzedRLMDL
Client ID Lab ID Matrix Date Collected Instrument Batch ID Aldrin ND 0.00027 0.0010 1 11/03/2015 19:32
a-BHC ND 0.00010 0.0010 1 11/03/2015 19:32
b-BHC ND 0.00025 0.0010 1 11/03/2015 19:32
d-BHC ND 0.00037 0.0010 1 11/03/2015 19:32
g-BHC ND 0.000097 0.0010 1 11/03/2015 19:32
Chlordane (Technical) 0.031 0.016 0.025 1 11/03/2015 19:32 a-Chlordane 0.0037 0.00047 0.0010 1 11/03/2015 19:32 g-Chlordane 0.0031 0.00021 0.0010 1 11/03/2015 19:32 p,p-DDD 0.00033 J 0.00014 0.0010 1 11/03/2015 19:32
p,p-DDE 0.0027 0.00032 0.0010 1 11/03/2015 19:32
p,p-DDT 0.0074 0.00043 0.0010 1 11/03/2015 19:32
Dieldrin ND 0.00033 0.0010 1 11/03/2015 19:32
Endosulfan I ND 0.00065 0.0010 1 11/03/2015 19:32
Endosulfan II ND 0.00020 0.0010 1 11/03/2015 19:32
Endosulfan sulfate ND 0.00063 0.0010 1 11/03/2015 19:32 Endrin ND 0.00042 0.0010 1 11/03/2015 19:32
Endrin aldehyde ND 0.00020 0.0010 1 11/03/2015 19:32
Endrin ketone ND 0.00013 0.0010 1 11/03/2015 19:32
Heptachlor ND 0.00021 0.0010 1 11/03/2015 19:32
Heptachlor epoxide 0.00028 J 0.00020 0.0010 1 11/03/2015 19:32 Hexachlorobenzene ND 0.00027 0.010 1 11/03/2015 19:32
Hexachlorocyclopentadiene ND 0.00040 0.020 1 11/03/2015 19:32 Methoxychlor ND 0.00089 0.0010 1 11/03/2015 19:32
Toxaphene ND 0.035 0.050 1 11/03/2015 19:32
Surrogates REC (%) Limits
Analyst(s): CK
Decachlorobiphenyl 85 70-130 11/03/2015 19:32
Angela Rydelius, Lab Manager
CDPH ELAP 1644 ♦ NELAP 4033ORELAP
(Cont.)

Page 9 of 57 ends

Project: 1401-2172; Cupertino (Sedgwick SSI)
Date Received: 10/28/15 18:33
Date Prepared: 10/28/15
WorkOrder: 1510A30
Extraction Method: SW3550B
Analytical Method: SW8081A
Unit: mg/kg
Organochlorine Pesticides (Basic Target List)
P-11A (SURF) 1510A30-011A Soil 10/27/2015 09:34 GC23 112155 Analytes Result Qualifiers DF Date AnalyzedRLMDL
Client ID Lab ID Matrix Date Collected Instrument Batch ID Aldrin ND 0.00027 0.0010 1 10/31/2015 22:17
a-BHC ND 0.00010 0.0010 1 10/31/2015 22:17
b-BHC ND 0.00025 0.0010 1 10/31/2015 22:17
d-BHC ND 0.00037 0.0010 1 10/31/2015 22:17
g-BHC ND 0.000097 0.0010 1 10/31/2015 22:17
Chlordane (Technical) 0.10 0.016 0.025 1 10/31/2015 22:17 a-Chlordane 0.014 0.00047 0.0010 1 10/31/2015 22:17
g-Chlordane 0.012 0.00021 0.0010 1 10/31/2015 22:17
p,p-DDD 0.0018 0.00014 0.0010 1 10/31/2015 22:17
p,p-DDE 0.012 0.00032 0.0010 1 10/31/2015 22:17
p,p-DDT 0.027 0.00043 0.0010 1 10/31/2015 22:17
Dieldrin 0.00076 J 0.00033 0.0010 1 10/31/2015 22:17 Endosulfan I ND 0.00065 0.0010 1 10/31/2015 22:17
Endosulfan II ND 0.00020 0.0010 1 10/31/2015 22:17
Endosulfan sulfate ND 0.00063 0.0010 1 10/31/2015 22:17 Endrin ND 0.00042 0.0010 1 10/31/2015 22:17
Endrin aldehyde ND 0.00020 0.0010 1 10/31/2015 22:17
Endrin ketone ND 0.00013 0.0010 1 10/31/2015 22:17
Heptachlor ND 0.00021 0.0010 1 10/31/2015 22:17
Heptachlor epoxide 0.0012 0.00020 0.0010 1 10/31/2015 22:17 Hexachlorobenzene ND 0.00027 0.010 1 10/31/2015 22:17
Hexachlorocyclopentadiene ND 0.00040 0.020 1 10/31/2015 22:17 Methoxychlor ND 0.00089 0.0010 1 10/31/2015 22:17
Toxaphene ND 0.035 0.050 1 10/31/2015 22:17
Surrogates REC (%) Limits
Analyst(s): SS
Decachlorobiphenyl 81 70-130 10/31/2015 22:17
Angela Rydelius, Lab Manager
CDPH ELAP 1644 ♦ NELAP 4033ORELAP
(Cont.)

Page 10 of 57 ends

Project: 1401-2172; Cupertino (Sedgwick SSI)
Date Received: 10/28/15 18:33
Date Prepared: 10/28/15
WorkOrder: 1510A30
Extraction Method: SW3550B
Analytical Method: SW8081A
Unit: mg/kg
Organochlorine Pesticides (Basic Target List)
P-11A (1-1.5') 1510A30-012A Soil 10/27/2015 09:37 GC23 112155 Analytes Result DF Date AnalyzedRLMDL
Client ID Lab ID Matrix Date Collected Instrument Batch ID Aldrin ND 0.00027 0.0010 1 10/31/2015 17:54
a-BHC ND 0.00010 0.0010 1 10/31/2015 17:54
b-BHC ND 0.00025 0.0010 1 10/31/2015 17:54
d-BHC ND 0.00037 0.0010 1 10/31/2015 17:54
g-BHC ND 0.000097 0.0010 1 10/31/2015 17:54
Chlordane (Technical) 0.083 0.016 0.025 1 10/31/2015 17:54 a-Chlordane 0.012 0.00047 0.0010 1 10/31/2015 17:54
g-Chlordane 0.011 0.00021 0.0010 1 10/31/2015 17:54
p,p-DDD 0.0021 0.00014 0.0010 1 10/31/2015 17:54
p,p-DDE 0.0069 0.00032 0.0010 1 10/31/2015 17:54
p,p-DDT 0.014 0.00043 0.0010 1 10/31/2015 17:54
Dieldrin ND 0.00033 0.0010 1 10/31/2015 17:54
Endosulfan I ND 0.00065 0.0010 1 10/31/2015 17:54
Endosulfan II ND 0.00020 0.0010 1 10/31/2015 17:54
Endosulfan sulfate ND 0.00063 0.0010 1 10/31/2015 17:54 Endrin ND 0.00042 0.0010 1 10/31/2015 17:54
Endrin aldehyde ND 0.00020 0.0010 1 10/31/2015 17:54
Endrin ketone ND 0.00013 0.0010 1 10/31/2015 17:54
Heptachlor ND 0.00021 0.0010 1 10/31/2015 17:54
Heptachlor epoxide ND 0.00020 0.0010 1 10/31/2015 17:54 Hexachlorobenzene ND 0.00027 0.010 1 10/31/2015 17:54
Hexachlorocyclopentadiene ND 0.00040 0.020 1 10/31/2015 17:54 Methoxychlor ND 0.00089 0.0010 1 10/31/2015 17:54
Toxaphene ND 0.035 0.050 1 10/31/2015 17:54
Surrogates REC (%) Limits
Analyst(s): SS
Decachlorobiphenyl 92 70-130 10/31/2015 17:54
Angela Rydelius, Lab Manager
CDPH ELAP 1644 ♦ NELAP 4033ORELAP
(Cont.)

Page 11 of 57 ends

Project: 1401-2172; Cupertino (Sedgwick SSI)
Date Received: 10/28/15 18:33
Date Prepared: 10/28/15
WorkOrder: 1510A30
Extraction Method: SW3550B
Analytical Method: SW8081A
Unit: mg/kg
Organochlorine Pesticides (Basic Target List)
P-11B (SURF) 1510A30-013A Soil 10/27/2015 09:23 GC23 112155 Analytes Result DF Date AnalyzedRLMDL
Client ID Lab ID Matrix Date Collected Instrument Batch ID Aldrin ND 0.00027 0.0010 1 10/31/2015 09:43
a-BHC ND 0.00010 0.0010 1 10/31/2015 09:43
b-BHC ND 0.00025 0.0010 1 10/31/2015 09:43
d-BHC ND 0.00037 0.0010 1 10/31/2015 09:43
g-BHC ND 0.000097 0.0010 1 10/31/2015 09:43
Chlordane (Technical) 0.65 0.080 0.12 5 11/04/2015 04:50 a-Chlordane 0.067 0.00047 0.0010 1 10/31/2015 09:43
g-Chlordane 0.049 0.00021 0.0010 1 10/31/2015 09:43
p,p-DDD 0.0043 0.00014 0.0010 1 10/31/2015 09:43
p,p-DDE 0.026 0.00032 0.0010 1 10/31/2015 09:43
p,p-DDT 0.055 0.00043 0.0010 1 10/31/2015 09:43
Dieldrin ND 0.00033 0.0010 1 10/31/2015 09:43
Endosulfan I ND 0.00065 0.0010 1 10/31/2015 09:43
Endosulfan II ND 0.00020 0.0010 1 10/31/2015 09:43
Endosulfan sulfate ND 0.00063 0.0010 1 10/31/2015 09:43 Endrin ND 0.00042 0.0010 1 10/31/2015 09:43
Endrin aldehyde ND 0.00020 0.0010 1 10/31/2015 09:43
Endrin ketone ND 0.00013 0.0010 1 10/31/2015 09:43
Heptachlor ND 0.00021 0.0010 1 10/31/2015 09:43
Heptachlor epoxide 0.0047 0.00020 0.0010 1 10/31/2015 09:43 Hexachlorobenzene ND 0.00027 0.010 1 10/31/2015 09:43
Hexachlorocyclopentadiene ND 0.00040 0.020 1 10/31/2015 09:43 Methoxychlor ND 0.00089 0.0010 1 10/31/2015 09:43
Toxaphene ND 0.035 0.050 1 10/31/2015 09:43
Surrogates REC (%) Limits
Analyst(s): SS
Decachlorobiphenyl 82 70-130 10/31/2015 09:43
Angela Rydelius, Lab Manager
CDPH ELAP 1644 ♦ NELAP 4033ORELAP
(Cont.)

Page 12 of 57 ends

Project: 1401-2172; Cupertino (Sedgwick SSI)
Date Received: 10/28/15 18:33
Date Prepared: 10/28/15
WorkOrder: 1510A30
Extraction Method: SW3550B
Analytical Method: SW8081A
Unit: mg/kg
Organochlorine Pesticides (Basic Target List)
P-11B (SURF) DUP 1510A30-013B Soil 10/27/2015 09:23 GC23 112155 Analytes Result Qualifiers DF Date AnalyzedRLMDL
Client ID Lab ID Matrix Date Collected Instrument Batch ID Aldrin ND 0.00027 0.0010 1 10/31/2015 21:02
a-BHC ND 0.00010 0.0010 1 10/31/2015 21:02
b-BHC ND 0.00025 0.0010 1 10/31/2015 21:02
d-BHC ND 0.00037 0.0010 1 10/31/2015 21:02
g-BHC ND 0.000097 0.0010 1 10/31/2015 21:02
Chlordane (Technical) 0.47 0.080 0.12 5 11/03/2015 09:24 a-Chlordane 0.058 0.00047 0.0010 1 10/31/2015 21:02
g-Chlordane 0.042 0.00021 0.0010 1 10/31/2015 21:02
p,p-DDD 0.0044 0.00014 0.0010 1 10/31/2015 21:02
p,p-DDE 0.021 0.00032 0.0010 1 10/31/2015 21:02
p,p-DDT 0.044 0.00043 0.0010 1 10/31/2015 21:02
Dieldrin 0.0017 0.00033 0.0010 1 10/31/2015 21:02
Endosulfan I ND 0.00065 0.0010 1 10/31/2015 21:02
Endosulfan II ND 0.00020 0.0010 1 10/31/2015 21:02
Endosulfan sulfate ND 0.00063 0.0010 1 10/31/2015 21:02 Endrin ND 0.00042 0.0010 1 10/31/2015 21:02
Endrin aldehyde ND 0.00020 0.0010 1 10/31/2015 21:02
Endrin ketone ND 0.00013 0.0010 1 10/31/2015 21:02
Heptachlor 0.00071 J 0.00021 0.0010 1 10/31/2015 21:02 Heptachlor epoxide 0.0038 0.00020 0.0010 1 10/31/2015 21:02 Hexachlorobenzene ND 0.00027 0.010 1 10/31/2015 21:02
Hexachlorocyclopentadiene ND 0.00040 0.020 1 10/31/2015 21:02 Methoxychlor ND 0.00089 0.0010 1 10/31/2015 21:02
Toxaphene ND 0.035 0.050 1 10/31/2015 21:02
Surrogates REC (%) Limits
Analyst(s): SS
Decachlorobiphenyl 82 70-130 10/31/2015 21:02
Angela Rydelius, Lab Manager
CDPH ELAP 1644 ♦ NELAP 4033ORELAP
(Cont.)

Page 13 of 57 ends

Project: 1401-2172; Cupertino (Sedgwick SSI)
Date Received: 10/28/15 18:33
Date Prepared: 10/28/15
WorkOrder: 1510A30
Extraction Method: SW3550B
Analytical Method: SW8081A
Unit: mg/kg
Organochlorine Pesticides (Basic Target List)
P-11B (1-1.5') 1510A30-014A Soil 10/27/2015 09:26 GC22 112169 Analytes Result Qualifiers DF Date AnalyzedRLMDL
Client ID Lab ID Matrix Date Collected Instrument Batch ID Aldrin ND 0.00027 0.0010 1 11/03/2015 02:24
a-BHC ND 0.00010 0.0010 1 11/03/2015 02:24
b-BHC ND 0.00025 0.0010 1 11/03/2015 02:24
d-BHC ND 0.00037 0.0010 1 11/03/2015 02:24
g-BHC ND 0.000097 0.0010 1 11/03/2015 02:24
Chlordane (Technical) 0.058 0.016 0.025 1 11/03/2015 02:24 a-Chlordane 0.0090 0.00047 0.0010 1 11/03/2015 02:24 g-Chlordane 0.0048 0.00021 0.0010 1 11/03/2015 02:24 p,p-DDD ND 0.00014 0.0010 1 11/03/2015 02:24
p,p-DDE 0.0038 0.00032 0.0010 1 11/03/2015 02:24
p,p-DDT 0.0098 0.00043 0.0010 1 11/03/2015 02:24
Dieldrin ND 0.00033 0.0010 1 11/03/2015 02:24
Endosulfan I ND 0.00065 0.0010 1 11/03/2015 02:24
Endosulfan II ND 0.00020 0.0010 1 11/03/2015 02:24
Endosulfan sulfate ND 0.00063 0.0010 1 11/03/2015 02:24 Endrin ND 0.00042 0.0010 1 11/03/2015 02:24
Endrin aldehyde ND 0.00020 0.0010 1 11/03/2015 02:24
Endrin ketone ND 0.00013 0.0010 1 11/03/2015 02:24
Heptachlor 0.00032 J 0.00021 0.0010 1 11/03/2015 02:24 Heptachlor epoxide 0.00055 J 0.00020 0.0010 1 11/03/2015 02:24 Hexachlorobenzene ND 0.00027 0.010 1 11/03/2015 02:24
Hexachlorocyclopentadiene ND 0.00040 0.020 1 11/03/2015 02:24 Methoxychlor ND 0.00089 0.0010 1 11/03/2015 02:24
Toxaphene ND 0.035 0.050 1 11/03/2015 02:24
Surrogates REC (%) Limits
Analyst(s): CK
Decachlorobiphenyl 78 70-130 11/03/2015 02:24
Angela Rydelius, Lab Manager
CDPH ELAP 1644 ♦ NELAP 4033ORELAP
(Cont.)

Page 14 of 57 ends

Project: 1401-2172; Cupertino (Sedgwick SSI)
Date Received: 10/28/15 18:33
Date Prepared: 10/28/15
WorkOrder: 1510A30
Extraction Method: SW3550B
Analytical Method: SW8081A
Unit: mg/kg
Organochlorine Pesticides (Basic Target List)
P-15A (SURF) 1510A30-015A Soil 10/27/2015 09:35 GC23 112169 Analytes Result DF Date AnalyzedRLMDL
Client ID Lab ID Matrix Date Collected Instrument Batch ID Aldrin ND 0.00027 0.0010 1 10/31/2015 20:24
a-BHC ND 0.00010 0.0010 1 10/31/2015 20:24
b-BHC ND 0.00025 0.0010 1 10/31/2015 20:24
d-BHC ND 0.00037 0.0010 1 10/31/2015 20:24
g-BHC ND 0.000097 0.0010 1 10/31/2015 20:24
Chlordane (Technical) 0.19 0.016 0.025 1 10/31/2015 20:24 a-Chlordane 0.035 0.00047 0.0010 1 10/31/2015 20:24
g-Chlordane 0.016 0.00021 0.0010 1 10/31/2015 20:24
p,p-DDD 0.0064 0.00014 0.0010 1 10/31/2015 20:24
p,p-DDE 0.15 0.00032 0.0010 1 10/31/2015 20:24
p,p-DDT 0.055 0.00043 0.0010 1 10/31/2015 20:24
Dieldrin ND 0.00033 0.0010 1 10/31/2015 20:24
Endosulfan I ND 0.00065 0.0010 1 10/31/2015 20:24
Endosulfan II ND 0.00020 0.0010 1 10/31/2015 20:24
Endosulfan sulfate ND 0.00063 0.0010 1 10/31/2015 20:24 Endrin ND 0.00042 0.0010 1 10/31/2015 20:24
Endrin aldehyde ND 0.00020 0.0010 1 10/31/2015 20:24
Endrin ketone ND 0.00013 0.0010 1 10/31/2015 20:24
Heptachlor ND 0.00021 0.0010 1 10/31/2015 20:24
Heptachlor epoxide 0.0024 0.00020 0.0010 1 10/31/2015 20:24 Hexachlorobenzene ND 0.00027 0.010 1 10/31/2015 20:24
Hexachlorocyclopentadiene ND 0.00040 0.020 1 10/31/2015 20:24 Methoxychlor ND 0.00089 0.0010 1 10/31/2015 20:24
Toxaphene ND 0.035 0.050 1 10/31/2015 20:24
Surrogates REC (%) Limits
Analyst(s): SS
Decachlorobiphenyl 88 70-130 10/31/2015 20:24
Angela Rydelius, Lab Manager
CDPH ELAP 1644 ♦ NELAP 4033ORELAP
(Cont.)

Page 15 of 57 ends

Project: 1401-2172; Cupertino (Sedgwick SSI)
Date Received: 10/28/15 18:33
Date Prepared: 10/28/15
WorkOrder: 1510A30
Extraction Method: SW3550B
Analytical Method: SW8081A
Unit: mg/kg
Organochlorine Pesticides (Basic Target List)
P-15A (1-1.5') 1510A30-016A Soil 10/27/2015 09:38 GC23 112169 Analytes Result Qualifiers DF Date AnalyzedRLMDL
Client ID Lab ID Matrix Date Collected Instrument Batch ID Aldrin ND 0.00027 0.0010 1 11/02/2015 21:34
a-BHC ND 0.00010 0.0010 1 11/02/2015 21:34
b-BHC ND 0.00025 0.0010 1 11/02/2015 21:34
d-BHC ND 0.00037 0.0010 1 11/02/2015 21:34
g-BHC ND 0.000097 0.0010 1 11/02/2015 21:34
Chlordane (Technical) ND 0.016 0.025 1 11/02/2015 21:34 a-Chlordane 0.0012 0.00047 0.0010 1 11/02/2015 21:34 g-Chlordane 0.00068 J 0.00021 0.0010 1 11/02/2015 21:34 p,p-DDD 0.0017 0.00014 0.0010 1 11/02/2015 21:34
p,p-DDE 0.0092 0.00032 0.0010 1 11/02/2015 21:34
p,p-DDT 0.0071 0.00043 0.0010 1 11/02/2015 21:34
Dieldrin ND 0.00033 0.0010 1 11/02/2015 21:34
Endosulfan I ND 0.00065 0.0010 1 11/02/2015 21:34
Endosulfan II ND 0.00020 0.0010 1 11/02/2015 21:34
Endosulfan sulfate ND 0.00063 0.0010 1 11/02/2015 21:34 Endrin ND 0.00042 0.0010 1 11/02/2015 21:34
Endrin aldehyde ND 0.00020 0.0010 1 11/02/2015 21:34
Endrin ketone ND 0.00013 0.0010 1 11/02/2015 21:34
Heptachlor 0.00034 J 0.00021 0.0010 1 11/02/2015 21:34 Heptachlor epoxide ND 0.00020 0.0010 1 11/02/2015 21:34 Hexachlorobenzene ND 0.00027 0.010 1 11/02/2015 21:34
Hexachlorocyclopentadiene ND 0.00040 0.020 1 11/02/2015 21:34 Methoxychlor ND 0.00089 0.0010 1 11/02/2015 21:34
Toxaphene ND 0.035 0.050 1 11/02/2015 21:34
Surrogates REC (%) Limits
Analyst(s): SS
Decachlorobiphenyl 83 70-130 11/02/2015 21:34
Angela Rydelius, Lab Manager
CDPH ELAP 1644 ♦ NELAP 4033ORELAP
(Cont.)

Page 16 of 57 ends

Project: 1401-2172; Cupertino (Sedgwick SSI)
Date Received: 10/28/15 18:33
Date Prepared: 10/28/15
WorkOrder: 1510A30
Extraction Method: SW3550B
Analytical Method: SW8081A
Unit: mg/kg
Organochlorine Pesticides (Basic Target List)
P-15A (1-1.5') DUP 1510A30-016B Soil 10/27/2015 09:38 GC22 112169 Analytes Result Qualifiers DF Date AnalyzedRLMDL
Client ID Lab ID Matrix Date Collected Instrument Batch ID Aldrin ND 0.00027 0.0010 1 11/03/2015 09:44
a-BHC ND 0.00010 0.0010 1 11/03/2015 09:44
b-BHC ND 0.00025 0.0010 1 11/03/2015 09:44
d-BHC ND 0.00037 0.0010 1 11/03/2015 09:44
g-BHC ND 0.000097 0.0010 1 11/03/2015 09:44
Chlordane (Technical) ND 0.016 0.025 1 11/03/2015 09:44 a-Chlordane 0.00090 J 0.00047 0.0010 1 11/03/2015 09:44 g-Chlordane 0.00053 J 0.00021 0.0010 1 11/03/2015 09:44 p,p-DDD 0.00099 J 0.00014 0.0010 1 11/03/2015 09:44
p,p-DDE 0.0062 0.00032 0.0010 1 11/03/2015 09:44
p,p-DDT 0.0065 0.00043 0.0010 1 11/03/2015 09:44
Dieldrin ND 0.00033 0.0010 1 11/03/2015 09:44
Endosulfan I ND 0.00065 0.0010 1 11/03/2015 09:44
Endosulfan II ND 0.00020 0.0010 1 11/03/2015 09:44
Endosulfan sulfate ND 0.00063 0.0010 1 11/03/2015 09:44 Endrin ND 0.00042 0.0010 1 11/03/2015 09:44
Endrin aldehyde ND 0.00020 0.0010 1 11/03/2015 09:44
Endrin ketone ND 0.00013 0.0010 1 11/03/2015 09:44
Heptachlor ND 0.00021 0.0010 1 11/03/2015 09:44
Heptachlor epoxide ND 0.00020 0.0010 1 11/03/2015 09:44 Hexachlorobenzene ND 0.00027 0.010 1 11/03/2015 09:44
Hexachlorocyclopentadiene ND 0.00040 0.020 1 11/03/2015 09:44 Methoxychlor ND 0.00089 0.0010 1 11/03/2015 09:44
Toxaphene ND 0.035 0.050 1 11/03/2015 09:44
Surrogates REC (%) Limits
Analyst(s): CK
Decachlorobiphenyl 79 70-130 11/03/2015 09:44
Angela Rydelius, Lab Manager
CDPH ELAP 1644 ♦ NELAP 4033ORELAP
(Cont.)

Page 17 of 57 ends

Project: 1401-2172; Cupertino (Sedgwick SSI)
Date Received: 10/28/15 18:33
Date Prepared: 10/28/15
WorkOrder: 1510A30
Extraction Method: SW3550B
Analytical Method: SW8081A
Unit: mg/kg
Organochlorine Pesticides (Basic Target List)
SS-6A (1-1.5') 1510A30-018A Soil 10/27/2015 10:08 GC23 112169 Analytes Result Qualifiers DF Date AnalyzedRLMDL
Client ID Lab ID Matrix Date Collected Instrument Batch ID Aldrin ND 0.00027 0.0010 1 10/31/2015 19:47
a-BHC ND 0.00010 0.0010 1 10/31/2015 19:47
b-BHC ND 0.00025 0.0010 1 10/31/2015 19:47
d-BHC ND 0.00037 0.0010 1 10/31/2015 19:47
g-BHC ND 0.000097 0.0010 1 10/31/2015 19:47
Chlordane (Technical) ND 0.016 0.025 1 10/31/2015 19:47 a-Chlordane 0.00073 J 0.00047 0.0010 1 10/31/2015 19:47 g-Chlordane 0.00061 J 0.00021 0.0010 1 10/31/2015 19:47 p,p-DDD 0.00053 J 0.00014 0.0010 1 10/31/2015 19:47
p,p-DDE 0.0069 0.00032 0.0010 1 10/31/2015 19:47
p,p-DDT 0.0046 0.00043 0.0010 1 10/31/2015 19:47
Dieldrin ND 0.00033 0.0010 1 10/31/2015 19:47
Endosulfan I ND 0.00065 0.0010 1 10/31/2015 19:47
Endosulfan II ND 0.00020 0.0010 1 10/31/2015 19:47
Endosulfan sulfate ND 0.00063 0.0010 1 10/31/2015 19:47 Endrin ND 0.00042 0.0010 1 10/31/2015 19:47
Endrin aldehyde ND 0.00020 0.0010 1 10/31/2015 19:47
Endrin ketone ND 0.00013 0.0010 1 10/31/2015 19:47
Heptachlor ND 0.00021 0.0010 1 10/31/2015 19:47
Heptachlor epoxide ND 0.00020 0.0010 1 10/31/2015 19:47 Hexachlorobenzene ND 0.00027 0.010 1 10/31/2015 19:47
Hexachlorocyclopentadiene ND 0.00040 0.020 1 10/31/2015 19:47 Methoxychlor ND 0.00089 0.0010 1 10/31/2015 19:47
Toxaphene ND 0.035 0.050 1 10/31/2015 19:47
Surrogates REC (%) Limits
Analyst(s): SS
Decachlorobiphenyl 80 70-130 10/31/2015 19:47
Angela Rydelius, Lab Manager
CDPH ELAP 1644 ♦ NELAP 4033ORELAP
(Cont.)

Page 18 of 57 ends

Project: 1401-2172; Cupertino (Sedgwick SSI)
Date Received: 10/28/15 18:33
Date Prepared: 10/28/15
WorkOrder: 1510A30
Extraction Method: SW3550B
Analytical Method: SW8081A
Unit: mg/kg
Organochlorine Pesticides (Basic Target List)
SS-6B (1-1.5') 1510A30-021A Soil 10/27/2015 10:33 GC22 112169 Analytes Result Qualifiers DF Date AnalyzedRLMDL
Client ID Lab ID Matrix Date Collected Instrument Batch ID Aldrin ND 0.00027 0.0010 1 11/03/2015 04:05
a-BHC ND 0.00010 0.0010 1 11/03/2015 04:05
b-BHC ND 0.00025 0.0010 1 11/03/2015 04:05
d-BHC ND 0.00037 0.0010 1 11/03/2015 04:05
g-BHC ND 0.000097 0.0010 1 11/03/2015 04:05
Chlordane (Technical) ND 0.016 0.025 1 11/03/2015 04:05 a-Chlordane ND 0.00047 0.0010 1 11/03/2015 04:05
g-Chlordane ND 0.00021 0.0010 1 11/03/2015 04:05
p,p-DDD ND 0.00014 0.0010 1 11/03/2015 04:05
p,p-DDE 0.00098 J 0.00032 0.0010 1 11/03/2015 04:05
p,p-DDT 0.0014 0.00043 0.0010 1 11/03/2015 04:05
Dieldrin ND 0.00033 0.0010 1 11/03/2015 04:05
Endosulfan I ND 0.00065 0.0010 1 11/03/2015 04:05
Endosulfan II ND 0.00020 0.0010 1 11/03/2015 04:05
Endosulfan sulfate ND 0.00063 0.0010 1 11/03/2015 04:05 Endrin ND 0.00042 0.0010 1 11/03/2015 04:05
Endrin aldehyde ND 0.00020 0.0010 1 11/03/2015 04:05
Endrin ketone ND 0.00013 0.0010 1 11/03/2015 04:05
Heptachlor ND 0.00021 0.0010 1 11/03/2015 04:05
Heptachlor epoxide ND 0.00020 0.0010 1 11/03/2015 04:05 Hexachlorobenzene ND 0.00027 0.010 1 11/03/2015 04:05
Hexachlorocyclopentadiene ND 0.00040 0.020 1 11/03/2015 04:05 Methoxychlor ND 0.00089 0.0010 1 11/03/2015 04:05
Toxaphene ND 0.035 0.050 1 11/03/2015 04:05
Surrogates REC (%) Limits
Analyst(s): CK
Decachlorobiphenyl 79 70-130 11/03/2015 04:05
Angela Rydelius, Lab Manager
CDPH ELAP 1644 ♦ NELAP 4033ORELAP
(Cont.)

Page 19 of 57 ends

Project: 1401-2172; Cupertino (Sedgwick SSI)
Date Received: 10/28/15 18:33
Date Prepared: 10/28/15
WorkOrder: 1510A30
Extraction Method: SW3550B
Analytical Method: SW8081A
Unit: mg/kg
Organochlorine Pesticides (Basic Target List)
SS-6C (1-1.5') 1510A30-024A Soil 10/27/2015 10:42 GC23 112169 Analytes Result DF Date AnalyzedRLMDL
Client ID Lab ID Matrix Date Collected Instrument Batch ID Aldrin ND 0.00027 0.0010 1 10/31/2015 19:09
a-BHC ND 0.00010 0.0010 1 10/31/2015 19:09
b-BHC ND 0.00025 0.0010 1 10/31/2015 19:09
d-BHC ND 0.00037 0.0010 1 10/31/2015 19:09
g-BHC ND 0.000097 0.0010 1 10/31/2015 19:09
Chlordane (Technical) ND 0.016 0.025 1 10/31/2015 19:09 a-Chlordane ND 0.00047 0.0010 1 10/31/2015 19:09
g-Chlordane ND 0.00021 0.0010 1 10/31/2015 19:09
p,p-DDD ND 0.00014 0.0010 1 10/31/2015 19:09
p,p-DDE 0.0050 0.00032 0.0010 1 10/31/2015 19:09
p,p-DDT 0.0021 0.00043 0.0010 1 10/31/2015 19:09
Dieldrin ND 0.00033 0.0010 1 10/31/2015 19:09
Endosulfan I ND 0.00065 0.0010 1 10/31/2015 19:09
Endosulfan II ND 0.00020 0.0010 1 10/31/2015 19:09
Endosulfan sulfate ND 0.00063 0.0010 1 10/31/2015 19:09 Endrin ND 0.00042 0.0010 1 10/31/2015 19:09
Endrin aldehyde ND 0.00020 0.0010 1 10/31/2015 19:09
Endrin ketone ND 0.00013 0.0010 1 10/31/2015 19:09
Heptachlor ND 0.00021 0.0010 1 10/31/2015 19:09
Heptachlor epoxide ND 0.00020 0.0010 1 10/31/2015 19:09 Hexachlorobenzene ND 0.00027 0.010 1 10/31/2015 19:09
Hexachlorocyclopentadiene ND 0.00040 0.020 1 10/31/2015 19:09 Methoxychlor ND 0.00089 0.0010 1 10/31/2015 19:09
Toxaphene ND 0.035 0.050 1 10/31/2015 19:09
Surrogates REC (%) Limits
Analyst(s): SS
Decachlorobiphenyl 80 70-130 10/31/2015 19:09
Angela Rydelius, Lab Manager
CDPH ELAP 1644 ♦ NELAP 4033ORELAP
(Cont.)

Page 20 of 57 ends

Project: 1401-2172; Cupertino (Sedgwick SSI)
Date Received: 10/28/15 18:33
Date Prepared: 10/28/15
WorkOrder: 1510A30
Extraction Method: SW3550B
Analytical Method: SW8081A
Unit: mg/kg
Organochlorine Pesticides (Basic Target List)
SS-6D (1-1.5') 1510A30-027A Soil 10/27/2015 10:46 GC22 112169 Analytes Result DF Date AnalyzedRLMDL
Client ID Lab ID Matrix Date Collected Instrument Batch ID Aldrin ND 0.00027 0.0010 1 11/02/2015 19:38
a-BHC ND 0.00010 0.0010 1 11/02/2015 19:38
b-BHC ND 0.00025 0.0010 1 11/02/2015 19:38
d-BHC ND 0.00037 0.0010 1 11/02/2015 19:38
g-BHC ND 0.000097 0.0010 1 11/02/2015 19:38
Chlordane (Technical) ND 0.016 0.025 1 11/02/2015 19:38 a-Chlordane ND 0.00047 0.0010 1 11/02/2015 19:38
g-Chlordane ND 0.00021 0.0010 1 11/02/2015 19:38
p,p-DDD ND 0.00014 0.0010 1 11/02/2015 19:38
p,p-DDE 0.0042 0.00032 0.0010 1 11/02/2015 19:38
p,p-DDT 0.0013 0.00043 0.0010 1 11/02/2015 19:38
Dieldrin ND 0.00033 0.0010 1 11/02/2015 19:38
Endosulfan I ND 0.00065 0.0010 1 11/02/2015 19:38
Endosulfan II ND 0.00020 0.0010 1 11/02/2015 19:38
Endosulfan sulfate ND 0.00063 0.0010 1 11/02/2015 19:38 Endrin ND 0.00042 0.0010 1 11/02/2015 19:38
Endrin aldehyde ND 0.00020 0.0010 1 11/02/2015 19:38
Endrin ketone ND 0.00013 0.0010 1 11/02/2015 19:38
Heptachlor ND 0.00021 0.0010 1 11/02/2015 19:38
Heptachlor epoxide ND 0.00020 0.0010 1 11/02/2015 19:38 Hexachlorobenzene ND 0.00027 0.010 1 11/02/2015 19:38
Hexachlorocyclopentadiene ND 0.00040 0.020 1 11/02/2015 19:38 Methoxychlor ND 0.00089 0.0010 1 11/02/2015 19:38
Toxaphene ND 0.035 0.050 1 11/02/2015 19:38
Surrogates REC (%) Limits
Analyst(s): CK
Decachlorobiphenyl 99 70-130 11/02/2015 19:38
Angela Rydelius, Lab Manager
CDPH ELAP 1644 ♦ NELAP 4033ORELAP
(Cont.)

Page 21 of 57 ends

Project: 1401-2172; Cupertino (Sedgwick SSI)
Date Received: 10/28/15 18:33
Date Prepared: 10/28/15
WorkOrder: 1510A30
Extraction Method: SW3550B
Analytical Method: SW8081A
Unit: mg/kg
Organochlorine Pesticides (Basic Target List)
SS-6E (SURF) 1510A30-029A Soil 10/27/2015 10:19 GC23 112169 Analytes Result Qualifiers DF Date AnalyzedRLMDL
Client ID Lab ID Matrix Date Collected Instrument Batch ID Aldrin ND 0.00027 0.0010 1 10/31/2015 18:32
a-BHC ND 0.00010 0.0010 1 10/31/2015 18:32
b-BHC ND 0.00025 0.0010 1 10/31/2015 18:32
d-BHC ND 0.00037 0.0010 1 10/31/2015 18:32
g-BHC ND 0.000097 0.0010 1 10/31/2015 18:32
Chlordane (Technical) 0.044 0.016 0.025 1 10/31/2015 18:32 a-Chlordane 0.0053 0.00047 0.0010 1 10/31/2015 18:32 g-Chlordane 0.0027 0.00021 0.0010 1 10/31/2015 18:32 p,p-DDD 0.0025 0.00014 0.0010 1 10/31/2015 18:32
p,p-DDE 0.021 0.00032 0.0010 1 10/31/2015 18:32
p,p-DDT 0.020 0.00043 0.0010 1 10/31/2015 18:32
Dieldrin 0.00054 J 0.00033 0.0010 1 10/31/2015 18:32 Endosulfan I ND 0.00065 0.0010 1 10/31/2015 18:32
Endosulfan II ND 0.00020 0.0010 1 10/31/2015 18:32
Endosulfan sulfate ND 0.00063 0.0010 1 10/31/2015 18:32 Endrin ND 0.00042 0.0010 1 10/31/2015 18:32
Endrin aldehyde ND 0.00020 0.0010 1 10/31/2015 18:32
Endrin ketone ND 0.00013 0.0010 1 10/31/2015 18:32
Heptachlor ND 0.00021 0.0010 1 10/31/2015 18:32
Heptachlor epoxide 0.0010 0.00020 0.0010 1 10/31/2015 18:32 Hexachlorobenzene ND 0.00027 0.010 1 10/31/2015 18:32
Hexachlorocyclopentadiene ND 0.00040 0.020 1 10/31/2015 18:32 Methoxychlor ND 0.00089 0.0010 1 10/31/2015 18:32
Toxaphene ND 0.035 0.050 1 10/31/2015 18:32
Surrogates REC (%) Limits
Analyst(s): SS
Decachlorobiphenyl 84 70-130 10/31/2015 18:32
Angela Rydelius, Lab Manager
CDPH ELAP 1644 ♦ NELAP 4033ORELAP
(Cont.)

Page 22 of 57 ends

Project: 1401-2172; Cupertino (Sedgwick SSI)
Date Received: 10/28/15 18:33
Date Prepared: 10/28/15
WorkOrder: 1510A30
Extraction Method: SW3550B
Analytical Method: SW8081A
Unit: mg/kg
Organochlorine Pesticides (Basic Target List)
SS-6E (1-1.5') 1510A30-030A Soil 10/27/2015 10:22 GC22 112169 Analytes Result Qualifiers DF Date AnalyzedRLMDL
Client ID Lab ID Matrix Date Collected Instrument Batch ID Aldrin ND 0.00027 0.0010 1 11/03/2015 08:36
a-BHC ND 0.00010 0.0010 1 11/03/2015 08:36
b-BHC ND 0.00025 0.0010 1 11/03/2015 08:36
d-BHC ND 0.00037 0.0010 1 11/03/2015 08:36
g-BHC ND 0.000097 0.0010 1 11/03/2015 08:36
Chlordane (Technical) ND 0.016 0.025 1 11/03/2015 08:36 a-Chlordane ND 0.00047 0.0010 1 11/03/2015 08:36
g-Chlordane ND 0.00021 0.0010 1 11/03/2015 08:36
p,p-DDD ND 0.00014 0.0010 1 11/03/2015 08:36
p,p-DDE 0.00045 J 0.00032 0.0010 1 11/03/2015 08:36
p,p-DDT ND 0.00043 0.0010 1 11/03/2015 08:36
Dieldrin ND 0.00033 0.0010 1 11/03/2015 08:36
Endosulfan I ND 0.00065 0.0010 1 11/03/2015 08:36
Endosulfan II ND 0.00020 0.0010 1 11/03/2015 08:36
Endosulfan sulfate ND 0.00063 0.0010 1 11/03/2015 08:36 Endrin ND 0.00042 0.0010 1 11/03/2015 08:36
Endrin aldehyde ND 0.00020 0.0010 1 11/03/2015 08:36
Endrin ketone ND 0.00013 0.0010 1 11/03/2015 08:36
Heptachlor 0.00026 J 0.00021 0.0010 1 11/03/2015 08:36 Heptachlor epoxide ND 0.00020 0.0010 1 11/03/2015 08:36 Hexachlorobenzene ND 0.00027 0.010 1 11/03/2015 08:36
Hexachlorocyclopentadiene ND 0.00040 0.020 1 11/03/2015 08:36 Methoxychlor ND 0.00089 0.0010 1 11/03/2015 08:36
Toxaphene ND 0.035 0.050 1 11/03/2015 08:36
Surrogates REC (%) Limits
Analyst(s): CK
Decachlorobiphenyl 76 70-130 11/03/2015 08:36
Angela Rydelius, Lab Manager
CDPH ELAP 1644 ♦ NELAP 4033ORELAP

Page 23 of 57 ends

Project: 1401-2172; Cupertino (Sedgwick SSI)
Date Received: 10/28/15 18:33
Date Prepared: 10/28/15
WorkOrder: 1510A30
Extraction Method: SW3550B/3620B
Analytical Method: SW8081A
Unit: mg/kg
Organochlorine Pesticides (Basic Target List) w/ Florisil Clean-Up P-10B (SURF) 1510A30-005A Soil 10/27/2015 10:12 GC23 112155 Analytes Result Qualifiers DF Date AnalyzedRLMDL
Client ID Lab ID Matrix Date Collected Instrument Batch ID Aldrin ND 0.00027 0.0010 1 10/31/2015 11:36
a-BHC ND 0.00010 0.0010 1 10/31/2015 11:36
b-BHC ND 0.00025 0.0010 1 10/31/2015 11:36
d-BHC ND 0.00037 0.0010 1 10/31/2015 11:36
g-BHC ND 0.000097 0.0010 1 10/31/2015 11:36
Chlordane (Technical) 0.50 0.080 0.12 5 11/04/2015 12:19 a-Chlordane 0.054 0.00047 0.0010 1 10/31/2015 11:36
g-Chlordane 0.044 0.00021 0.0010 1 10/31/2015 11:36
p,p-DDD 0.0016 0.00014 0.0010 1 10/31/2015 11:36
p,p-DDE 0.0078 0.00032 0.0010 1 10/31/2015 11:36
p,p-DDT 0.0085 0.00043 0.0010 1 10/31/2015 11:36
Dieldrin ND 0.00033 0.0010 1 10/31/2015 11:36
Endosulfan I ND 0.00065 0.0010 1 10/31/2015 11:36
Endosulfan II ND 0.00020 0.0010 1 10/31/2015 11:36
Endosulfan sulfate ND 0.00063 0.0010 1 10/31/2015 11:36 Endrin ND 0.00097 0.0010 1 10/31/2015 11:36
Endrin aldehyde ND 0.00020 0.0010 1 10/31/2015 11:36
Endrin ketone ND 0.00013 0.0010 1 10/31/2015 11:36
Heptachlor 0.00094 J 0.00021 0.0010 1 10/31/2015 11:36 Heptachlor epoxide 0.0052 0.00020 0.0010 1 10/31/2015 11:36 Hexachlorobenzene ND 0.00027 0.010 1 10/31/2015 11:36
Hexachlorocyclopentadiene ND 0.00040 0.020 1 10/31/2015 11:36 Methoxychlor ND 0.00089 0.0010 1 10/31/2015 11:36
Toxaphene ND 0.035 0.050 1 10/31/2015 11:36
Surrogates REC (%) Limits
Analyst(s): SS
Decachlorobiphenyl 87 70-130 10/31/2015 11:36
Angela Rydelius, Lab Manager
CDPH ELAP 1644 ♦ NELAP 4033ORELAP
(Cont.)

Page 24 of 57 ends

Project: 1401-2172; Cupertino (Sedgwick SSI)
Date Received: 10/28/15 18:33
Date Prepared: 10/28/15
WorkOrder: 1510A30
Extraction Method: SW3550B/3620B
Analytical Method: SW8081A
Unit: mg/kg
Organochlorine Pesticides (Basic Target List) w/ Florisil Clean-Up P-10D (SURF) 1510A30-009A Soil 10/27/2015 09:49 GC23 112155 Analytes Result DF Date AnalyzedRLMDL
Client ID Lab ID Matrix Date Collected Instrument Batch ID Aldrin ND 0.00027 0.0010 1 10/31/2015 12:13
a-BHC ND 0.00010 0.0010 1 10/31/2015 12:13
b-BHC ND 0.00025 0.0010 1 10/31/2015 12:13
d-BHC ND 0.00037 0.0010 1 10/31/2015 12:13
g-BHC ND 0.000097 0.0010 1 10/31/2015 12:13
Chlordane (Technical) 4.8 0.80 1.2 50 11/04/2015 09:10 a-Chlordane 0.49 0.024 0.050 50 11/04/2015 09:10
g-Chlordane 0.41 0.010 0.050 50 11/04/2015 09:10
p,p-DDD ND 0.00014 0.0010 1 10/31/2015 12:13
p,p-DDE 0.028 0.00032 0.0010 1 10/31/2015 12:13
p,p-DDT 0.081 0.00043 0.0010 1 10/31/2015 12:13
Dieldrin ND 0.00033 0.0010 1 10/31/2015 12:13
Endosulfan I ND 0.00065 0.0010 1 10/31/2015 12:13
Endosulfan II ND 0.00020 0.0010 1 10/31/2015 12:13
Endosulfan sulfate ND 0.00063 0.0010 1 10/31/2015 12:13 Endrin ND 0.00097 0.0010 1 10/31/2015 12:13
Endrin aldehyde ND 0.00020 0.0010 1 10/31/2015 12:13
Endrin ketone ND 0.00013 0.0010 1 10/31/2015 12:13
Heptachlor 0.0054 0.00021 0.0010 1 10/31/2015 12:13
Heptachlor epoxide 0.030 0.00020 0.0010 1 10/31/2015 12:13 Hexachlorobenzene ND 0.00027 0.010 1 10/31/2015 12:13
Hexachlorocyclopentadiene ND 0.00040 0.020 1 10/31/2015 12:13 Methoxychlor ND 0.00089 0.0010 1 10/31/2015 12:13
Toxaphene ND 0.035 0.050 1 10/31/2015 12:13
Surrogates REC (%) Limits
Analyst(s): CK, SS
Decachlorobiphenyl 91 70-130 10/31/2015 12:13
Angela Rydelius, Lab Manager
CDPH ELAP 1644 ♦ NELAP 4033ORELAP
(Cont.)

Page 25 of 57 ends

Project: 1401-2172; Cupertino (Sedgwick SSI)
Date Received: 10/28/15 18:33
Date Prepared: 10/28/15
WorkOrder: 1510A30
Extraction Method: SW3550B/3620B
Analytical Method: SW8081A
Unit: mg/kg
Organochlorine Pesticides (Basic Target List) w/ Florisil Clean-Up SS-6A (SURF) 1510A30-017A Soil 10/27/2015 10:06 GC23 112169 Analytes Result Qualifiers DF Date AnalyzedRLMDL
Client ID Lab ID Matrix Date Collected Instrument Batch ID Aldrin ND 0.00027 0.0010 1 11/04/2015 02:58
a-BHC ND 0.00010 0.0010 1 11/04/2015 02:58
b-BHC ND 0.00025 0.0010 1 11/04/2015 02:58
d-BHC ND 0.00037 0.0010 1 11/04/2015 02:58
g-BHC ND 0.000097 0.0010 1 11/04/2015 02:58
Chlordane (Technical) ND 0.016 0.025 1 11/04/2015 02:58 a-Chlordane ND 0.00047 0.0010 1 11/04/2015 02:58
g-Chlordane ND 0.00021 0.0010 1 11/04/2015 02:58
p,p-DDD 0.00054 J 0.00014 0.0010 1 11/04/2015 02:58
p,p-DDE 0.012 0.00032 0.0010 1 11/04/2015 02:58
p,p-DDT 0.0065 0.00043 0.0010 1 11/04/2015 02:58
Dieldrin 0.00042 J 0.00033 0.0010 1 11/04/2015 02:58 Endosulfan I ND 0.00065 0.0010 1 11/04/2015 02:58
Endosulfan II ND 0.00020 0.0010 1 11/04/2015 02:58
Endosulfan sulfate ND 0.00063 0.0010 1 11/04/2015 02:58 Endrin ND 0.00097 0.0010 1 11/04/2015 02:58
Endrin aldehyde ND 0.00020 0.0010 1 11/04/2015 02:58
Endrin ketone ND 0.00013 0.0010 1 11/04/2015 02:58
Heptachlor 0.00065 J 0.00021 0.0010 1 11/04/2015 02:58 Heptachlor epoxide ND 0.00020 0.0010 1 11/04/2015 02:58 Hexachlorobenzene ND 0.00027 0.010 1 11/04/2015 02:58
Hexachlorocyclopentadiene ND 0.00040 0.020 1 11/04/2015 02:58 Methoxychlor ND 0.00089 0.0010 1 11/04/2015 02:58
Toxaphene ND 0.035 0.050 1 11/04/2015 02:58
Surrogates REC (%) Limits
Analyst(s): SS
Decachlorobiphenyl 84 70-130 11/04/2015 02:58
Angela Rydelius, Lab Manager
CDPH ELAP 1644 ♦ NELAP 4033ORELAP
(Cont.)

Page 26 of 57 ends

Project: 1401-2172; Cupertino (Sedgwick SSI)
Date Received: 10/28/15 18:33
Date Prepared: 10/28/15
WorkOrder: 1510A30
Extraction Method: SW3550B/3620B
Analytical Method: SW8081A
Unit: mg/kg
Organochlorine Pesticides (Basic Target List) w/ Florisil Clean-Up SS-6B (SURF) 1510A30-020A Soil 10/27/2015 10:29 GC23 112206 Analytes Result Qualifiers DF Date AnalyzedRLMDL
Client ID Lab ID Matrix Date Collected Instrument Batch ID Aldrin ND 0.00054 0.0020 2 10/31/2015 07:14
a-BHC ND 0.00020 0.0020 2 10/31/2015 07:14
b-BHC ND 0.00050 0.0020 2 10/31/2015 07:14
d-BHC ND 0.00074 0.0020 2 10/31/2015 07:14
g-BHC ND 0.00019 0.0020 2 10/31/2015 07:14
Chlordane (Technical) ND 0.032 0.050 2 10/31/2015 07:14 a-Chlordane 0.0019 J 0.00094 0.0020 2 10/31/2015 07:14 g-Chlordane 0.0015 J 0.00042 0.0020 2 10/31/2015 07:14 p,p-DDD 0.0012 J 0.00028 0.0020 2 10/31/2015 07:14
p,p-DDE 0.025 0.00064 0.0020 2 10/31/2015 07:14
p,p-DDT 0.015 0.00086 0.0020 2 10/31/2015 07:14
Dieldrin 0.0015 J 0.00066 0.0020 2 10/31/2015 07:14
Endosulfan I ND 0.0013 0.0020 2 10/31/2015 07:14
Endosulfan II ND 0.00040 0.0020 2 10/31/2015 07:14
Endosulfan sulfate ND 0.0013 0.0020 2 10/31/2015 07:14
Endrin ND 0.0019 0.0020 2 10/31/2015 07:14
Endrin aldehyde ND 0.00040 0.0020 2 10/31/2015 07:14
Endrin ketone ND 0.00026 0.0020 2 10/31/2015 07:14
Heptachlor ND 0.00042 0.0020 2 10/31/2015 07:14
Heptachlor epoxide ND 0.00040 0.0020 2 10/31/2015 07:14 Hexachlorobenzene ND 0.00054 0.020 2 10/31/2015 07:14
Hexachlorocyclopentadiene ND 0.00080 0.040 2 10/31/2015 07:14 Methoxychlor ND 0.0018 0.0020 2 10/31/2015 07:14
Toxaphene 0.41 0.070 0.10 2 10/31/2015 07:14
Surrogates REC (%) Limits
Analyst(s): SS
Decachlorobiphenyl 83 70-130 10/31/2015 07:14
Angela Rydelius, Lab Manager
CDPH ELAP 1644 ♦ NELAP 4033ORELAP
(Cont.)

Page 27 of 57 ends

Project: 1401-2172; Cupertino (Sedgwick SSI)
Date Received: 10/28/15 18:33
Date Prepared: 10/28/15
WorkOrder: 1510A30
Extraction Method: SW3550B/3620B
Analytical Method: SW8081A
Unit: mg/kg
Organochlorine Pesticides (Basic Target List) w/ Florisil Clean-Up SS-6C (SURF) 1510A30-023A Soil 10/27/2015 10:40 GC23 112206 Analytes Result Qualifiers DF Date AnalyzedRLMDL
Client ID Lab ID Matrix Date Collected Instrument Batch ID Aldrin ND 0.00027 0.0010 1 10/31/2015 08:28
a-BHC ND 0.00010 0.0010 1 10/31/2015 08:28
b-BHC ND 0.00025 0.0010 1 10/31/2015 08:28
d-BHC ND 0.00037 0.0010 1 10/31/2015 08:28
g-BHC ND 0.000097 0.0010 1 10/31/2015 08:28
Chlordane (Technical) ND 0.016 0.025 1 10/31/2015 08:28 a-Chlordane 0.0019 0.00047 0.0010 1 10/31/2015 08:28 g-Chlordane 0.0017 0.00021 0.0010 1 10/31/2015 08:28 p,p-DDD 0.0012 0.00014 0.0010 1 10/31/2015 08:28
p,p-DDE 0.017 0.00032 0.0010 1 10/31/2015 08:28
p,p-DDT 0.016 0.00043 0.0010 1 10/31/2015 08:28
Dieldrin 0.00085 J 0.00033 0.0010 1 10/31/2015 08:28 Endosulfan I ND 0.00065 0.0010 1 10/31/2015 08:28
Endosulfan II ND 0.00020 0.0010 1 10/31/2015 08:28
Endosulfan sulfate ND 0.00063 0.0010 1 10/31/2015 08:28 Endrin ND 0.00097 0.0010 1 10/31/2015 08:28
Endrin aldehyde ND 0.00020 0.0010 1 10/31/2015 08:28
Endrin ketone ND 0.00013 0.0010 1 10/31/2015 08:28
Heptachlor ND 0.00021 0.0010 1 10/31/2015 08:28
Heptachlor epoxide 0.00035 J 0.00020 0.0010 1 10/31/2015 08:28 Hexachlorobenzene ND 0.00027 0.010 1 10/31/2015 08:28
Hexachlorocyclopentadiene ND 0.00040 0.020 1 10/31/2015 08:28 Methoxychlor ND 0.00089 0.0010 1 10/31/2015 08:28
Toxaphene ND 0.035 0.050 1 10/31/2015 08:28
Surrogates REC (%) Limits
Analyst(s): SS
Decachlorobiphenyl 83 70-130 10/31/2015 08:28
Angela Rydelius, Lab Manager
CDPH ELAP 1644 ♦ NELAP 4033ORELAP
(Cont.)

Page 28 of 57 ends

Project: 1401-2172; Cupertino (Sedgwick SSI)
Date Received: 10/28/15 18:33
Date Prepared: 10/28/15
WorkOrder: 1510A30
Extraction Method: SW3550B/3620B
Analytical Method: SW8081A
Unit: mg/kg
Organochlorine Pesticides (Basic Target List) w/ Florisil Clean-Up SS-6D (SURF) 1510A30-026A Soil 10/27/2015 10:41 GC23 112206 Analytes Result Qualifiers DF Date AnalyzedRLMDL
Client ID Lab ID Matrix Date Collected Instrument Batch ID Aldrin ND 0.00027 0.0010 1 10/31/2015 09:06
a-BHC ND 0.00010 0.0010 1 10/31/2015 09:06
b-BHC ND 0.00025 0.0010 1 10/31/2015 09:06
d-BHC ND 0.00037 0.0010 1 10/31/2015 09:06
g-BHC ND 0.000097 0.0010 1 10/31/2015 09:06
Chlordane (Technical) 0.037 0.016 0.025 1 10/31/2015 09:06 a-Chlordane 0.0035 0.00047 0.0010 1 10/31/2015 09:06 g-Chlordane 0.0033 0.00021 0.0010 1 10/31/2015 09:06 p,p-DDD 0.00087 J 0.00014 0.0010 1 10/31/2015 09:06
p,p-DDE 0.011 0.00032 0.0010 1 10/31/2015 09:06
p,p-DDT 0.014 0.00043 0.0010 1 10/31/2015 09:06
Dieldrin ND 0.00033 0.0010 1 10/31/2015 09:06
Endosulfan I ND 0.00065 0.0010 1 10/31/2015 09:06
Endosulfan II ND 0.00020 0.0010 1 10/31/2015 09:06
Endosulfan sulfate ND 0.00063 0.0010 1 10/31/2015 09:06 Endrin ND 0.00097 0.0010 1 10/31/2015 09:06
Endrin aldehyde ND 0.00020 0.0010 1 10/31/2015 09:06
Endrin ketone ND 0.00013 0.0010 1 10/31/2015 09:06
Heptachlor ND 0.00021 0.0010 1 10/31/2015 09:06
Heptachlor epoxide 0.00039 J 0.00020 0.0010 1 10/31/2015 09:06 Hexachlorobenzene ND 0.00027 0.010 1 10/31/2015 09:06
Hexachlorocyclopentadiene ND 0.00040 0.020 1 10/31/2015 09:06 Methoxychlor ND 0.00089 0.0010 1 10/31/2015 09:06
Toxaphene ND 0.035 0.050 1 10/31/2015 09:06
Surrogates REC (%) Limits
Analyst(s): SS
Decachlorobiphenyl 83 70-130 10/31/2015 09:06
Angela Rydelius, Lab Manager
CDPH ELAP 1644 ♦ NELAP 4033ORELAP

Page 29 of 57 ends

Project: 1401-2172; Cupertino (Sedgwick SSI)
Date Received: 10/28/15 18:33
Date Prepared: 10/28/15-11/4/15
WorkOrder: 1510A30
Extraction Method: SW3050B
Analytical Method: SW6020
Unit: mg/Kg
Lead
P-15A (SURF) 1510A30-015A Soil 10/27/2015 09:35 ICP-MS2 112158 Analytes Result DF Date AnalyzedRL
Client ID Lab ID Matrix Date Collected Instrument Batch ID Lead 31 0.50 1 10/30/2015 17:49
Surrogates REC (%) Limits
Analyst(s): DVH
Terbium 110 70-130 10/30/2015 17:49
P-13A (SURF) 1510A30-047A Soil 10/27/2015 09:00 ICP-MS2 112158 Analytes Result DF Date AnalyzedRL
Client ID Lab ID Matrix Date Collected Instrument Batch ID Lead 68 0.50 1 10/30/2015 17:55
Surrogates REC (%) Limits
Analyst(s): DVH
Terbium 105 70-130 10/30/2015 17:55
P-13B (SURF) 1510A30-048A Soil 10/27/2015 09:05 ICP-MS2 112158 Analytes Result DF Date AnalyzedRL
Client ID Lab ID Matrix Date Collected Instrument Batch ID Lead 62 0.50 1 10/30/2015 18:01
Surrogates REC (%) Limits
Analyst(s): DVH
Terbium 103 70-130 10/30/2015 18:01
P-17A (SURF) 1510A30-049A Soil 10/27/2015 08:55 ICP-MS2 112437 Analytes Result DF Date AnalyzedRL
Client ID Lab ID Matrix Date Collected Instrument Batch ID Lead 73 0.50 1 11/05/2015 14:44
Surrogates REC (%) Limits
Analyst(s): AC
Terbium 111 70-130 11/05/2015 14:44
Angela Rydelius, Lab Manager
CDPH ELAP 1644 ♦ NELAP 4033ORELAP
(Cont.)

Page 30 of 57 ends

Project: 1401-2172; Cupertino (Sedgwick SSI)
Date Received: 10/28/15 18:33
Date Prepared: 10/28/15-11/4/15
WorkOrder: 1510A30
Extraction Method: SW3050B
Analytical Method: SW6020
Unit: mg/Kg
Lead
P-17A (SURF) DUP 1510A30-049B Soil 10/27/2015 08:55 ICP-MS2 112158 Analytes Result DF Date AnalyzedRL
Client ID Lab ID Matrix Date Collected Instrument Batch ID Lead 60 0.50 1 10/30/2015 18:13
Surrogates REC (%) Limits
Analyst(s): DVH
Terbium 102 70-130 10/30/2015 18:13
P-28A (SURF) 1510A30-050A Soil 10/27/2015 08:50 ICP-MS1 112164 Analytes Result DF Date AnalyzedRL
Client ID Lab ID Matrix Date Collected Instrument Batch ID Lead 65 0.50 1 10/30/2015 13:59
Surrogates REC (%) Limits
Analyst(s): DVH
Terbium 105 70-130 10/30/2015 13:59
P-29 (SURF) 1510A30-051A Soil 10/27/2015 09:10 ICP-MS2 112164 Analytes Result DF Date AnalyzedRL
Client ID Lab ID Matrix Date Collected Instrument Batch ID Lead 39 0.50 1 10/30/2015 18:19
Surrogates REC (%) Limits
Analyst(s): DVH
Terbium 100 70-130 10/30/2015 18:19
P-29A (SURF) 1510A30-052A Soil 10/27/2015 09:14 ICP-MS2 112164 Analytes Result DF Date AnalyzedRL
Client ID Lab ID Matrix Date Collected Instrument Batch ID Lead 36 0.50 1 10/30/2015 18:25
Surrogates REC (%) Limits
Analyst(s): DVH
Terbium 102 70-130 10/30/2015 18:25
Angela Rydelius, Lab Manager
CDPH ELAP 1644 ♦ NELAP 4033ORELAP
(Cont.)

Page 31 of 57 ends

Project: 1401-2172; Cupertino (Sedgwick SSI)
Date Received: 10/28/15 18:33
Date Prepared: 10/28/15-11/4/15
WorkOrder: 1510A30
Extraction Method: SW3050B
Analytical Method: SW6020
Unit: mg/Kg
Lead
P-30 (SURF) 1510A30-053A Soil 10/27/2015 09:17 ICP-MS2 112164 Analytes Result DF Date AnalyzedRL
Client ID Lab ID Matrix Date Collected Instrument Batch ID Lead 65 0.50 1 10/30/2015 18:43
Surrogates REC (%) Limits
Analyst(s): DVH
Terbium 88 70-130 10/30/2015 18:43
P-31 (SURF) 1510A30-054A Soil 10/27/2015 09:21 ICP-MS2 112164 Analytes Result DF Date AnalyzedRL
Client ID Lab ID Matrix Date Collected Instrument Batch ID Lead 41 0.50 1 10/30/2015 18:49
Surrogates REC (%) Limits
Analyst(s): DVH
Terbium 105 70-130 10/30/2015 18:49
P-32 (SURF) 1510A30-055A Soil 10/27/2015 09:24 ICP-MS2 112164 Analytes Result DF Date AnalyzedRL
Client ID Lab ID Matrix Date Collected Instrument Batch ID Lead 42 0.50 1 10/30/2015 18:55
Surrogates REC (%) Limits
Analyst(s): DVH
Terbium 100 70-130 10/30/2015 18:55
P-33 (SURF) 1510A30-056A Soil 10/27/2015 09:28 ICP-MS2 112164 Analytes Result DF Date AnalyzedRL
Client ID Lab ID Matrix Date Collected Instrument Batch ID Lead 49 0.50 1 10/30/2015 19:01
Surrogates REC (%) Limits
Analyst(s): DVH
Terbium 102 70-130 10/30/2015 19:01
Angela Rydelius, Lab Manager
CDPH ELAP 1644 ♦ NELAP 4033ORELAP

Page 32 of 57 ends

Project: 1401-2172; Cupertino (Sedgwick SSI)
Date Received: 10/28/15 18:33
Date Prepared: 10/28/15
WorkOrder: 1510A30
Extraction Method: E200.8
Analytical Method: E200.8
Unit: µg/L
Lead
FB #1 1510A30-057A Water 10/27/2015 12:00 ICP-MS1 112159 Analytes Result DF Date AnalyzedRL
Client ID Lab ID Matrix Date Collected Instrument Batch ID Lead ND 0.50 1 10/29/2015 10:28
Surrogates REC (%) Limits
Analyst(s): DVH
Terbium 103 70-130 10/29/2015 10:28
EB #1 1510A30-058A Water 10/27/2015 12:05 ICP-MS1 112159 Analytes Result DF Date AnalyzedRL
Client ID Lab ID Matrix Date Collected Instrument Batch ID Lead ND 0.50 1 10/30/2015 01:43
Surrogates REC (%) Limits
Analyst(s): DVH
Terbium 111 70-130 10/30/2015 01:43
Angela Rydelius, Lab Manager
CDPH ELAP 1644 ♦ NELAP 4033ORELAP

Page 33 of 57 ends

Quality Control Report
McCampbell Analytical, Inc.
1534 Willow Pass Road, Pittsburg, CA 94565-1701
Toll Free Telephone: (877) 252-9262 / Fax: (925) 252-9269 http://www.mccampbell.com / E-mail: [email protected]"When Quality Counts" Client: Padre Associates. Inc.

Project: 1401-2172; Cupertino (Sedgwick SSI)
Date Analyzed: 10/28/15
Date Prepared: 10/28/15
WorkOrder: 1510A30
BatchID: 112155
Analytical Method: SW8081A
Unit: mg/kg
Sample ID: MB/LCS-112155
1510A22-001AMS/MSD
Instrument: GC22
Matrix: Soil
Extraction Method: SW3550B
QC Summary Report for SW8081A
Analyte MB
Result
LCS
Result

MDL RL SPK
Val
MB SS
%REC
LCS
%REC
LCS
Limits
Aldrin ND 0.0472 0.00027 0.0010 0.050 - 94 70-130
a-BHC ND - 0.00010 0.0010 - - - -
b-BHC ND - 0.00025 0.0010 - - - -
d-BHC ND - 0.00037 0.0010 - - - -
g-BHC ND 0.0517 0.000097 0.0010 0.050 - 103 70-130
Chlordane (Technical) ND - 0.016 0.025 - - - -
a-Chlordane ND - 0.00047 0.0010 - - - -
g-Chlordane ND - 0.00021 0.0010 - - - -
p,p-DDD ND - 0.00014 0.0010 - - - -
p,p-DDE ND - 0.00032 0.0010 - - - -
p,p-DDT ND 0.0505 0.00043 0.0010 0.050 - 101 70-130
Dieldrin ND 0.0546 0.00033 0.0010 0.050 - 109 70-130
Endosulfan I ND - 0.00065 0.0010 - - - -
Endosulfan II ND - 0.00020 0.0010 - - - -
Endosulfan sulfate ND - 0.00063 0.0010 - - - -
Endrin ND 0.0475 0.00042 0.0010 0.050 - 95 70-130
Endrin aldehyde ND - 0.00020 0.0010 - - - -
Endrin ketone ND - 0.00013 0.0010 - - - -
Heptachlor ND 0.0533 0.00021 0.0010 0.050 - 107 70-130
Heptachlor epoxide ND - 0.00020 0.0010 - - - -
Hexachlorobenzene ND - 0.00027 0.010 - - - -
Hexachlorocyclopentadiene ND - 0.00040 0.020 - - - -
Methoxychlor ND - 0.00089 0.0010 - - - -
Toxaphene ND - 0.035 0.050 - - - -
Surrogate Recovery
Decachlorobiphenyl 0.0436 0.0440 0.050 87 88 70-130
QA/QC Officer
CDPH ELAP 1644 ♦ NELAP 4033ORELAP
(Cont.)

Page 34 of 57 ends

RPD RPD
Limit
Aldrin 0.0483 0.0480 0.050 ND 97 96 70-130 0.619 30
g-BHC 0.0520 0.0517 0.050 ND 104 103 70-130 0.628 30
p,p-DDT 0.0516 0.0517 0.050 ND 103 103 70-130 0 30
Dieldrin 0.0559 0.0563 0.050 ND 112 113 70-130 0.636 30 Endrin 0.0532 0.0532 0.050 ND 106 106 70-130 0 30
Heptachlor 0.0538 0.0535 0.050 ND 108 107 70-130 0.596 30 Surrogate Recovery
Decachlorobiphenyl 0.0449 0.0446 0.050 90 89 70-130 0.521 30 QA/QC Officer
CDPH ELAP 1644 ♦ NELAP 4033ORELAP
(Cont.)

Page 35 of 57 ends

Project: 1401-2172; Cupertino (Sedgwick SSI)
Date Analyzed: 11/2/15
Date Prepared: 10/28/15
WorkOrder: 1510A30
BatchID: 112169
Analytical Method: SW8081A
Unit: mg/kg
Sample ID: MB/LCS-112169
1510A30-014AMS/MSD
Instrument: GC22
Matrix: Soil
Extraction Method: SW3550B
QC Summary Report for SW8081A
Analyte MB
Result
LCS
Result

MDL RL SPK
Val
MB SS
%REC
LCS
%REC
LCS
Limits
Aldrin ND 0.0453 0.00027 0.0010 0.050 - 91 70-130
a-BHC ND - 0.00010 0.0010 - - - -
b-BHC ND - 0.00025 0.0010 - - - -
d-BHC ND - 0.00037 0.0010 - - - -
g-BHC ND 0.0504 0.000097 0.0010 0.050 - 101 70-130
Chlordane (Technical) ND - 0.016 0.025 - - - -
a-Chlordane ND - 0.00047 0.0010 - - - -
g-Chlordane ND - 0.00021 0.0010 - - - -
p,p-DDD ND - 0.00014 0.0010 - - - -
p,p-DDE ND - 0.00032 0.0010 - - - -
p,p-DDT ND 0.0478 0.00043 0.0010 0.050 - 96 70-130
Dieldrin ND 0.0513 0.00033 0.0010 0.050 - 103 70-130
Endosulfan I ND - 0.00065 0.0010 - - - -
Endosulfan II ND - 0.00020 0.0010 - - - -
Endosulfan sulfate ND - 0.00063 0.0010 - - - -
Endrin ND 0.0462 0.00042 0.0010 0.050 - 92 70-130
Endrin aldehyde ND - 0.00020 0.0010 - - - -
Endrin ketone ND - 0.00013 0.0010 - - - -
Heptachlor ND 0.0517 0.00021 0.0010 0.050 - 103 70-130
Heptachlor epoxide ND - 0.00020 0.0010 - - - -
Hexachlorobenzene ND - 0.00027 0.010 - - - -
Hexachlorocyclopentadiene ND - 0.00040 0.020 - - - -
Methoxychlor ND - 0.00089 0.0010 - - - -
Toxaphene ND - 0.035 0.050 - - - -
Surrogate Recovery
Decachlorobiphenyl 0.0415 0.0418 0.050 83 84 70-130
QA/QC Officer
CDPH ELAP 1644 ♦ NELAP 4033ORELAP
(Cont.)

Page 36 of 57 ends

RPD RPD
Limit
Aldrin 0.0467 0.0464 0.050 ND 93 93 70-130 0 30
g-BHC 0.0521 0.0522 0.050 ND 104 104 70-130 0 30
p,p-DDT 0.0589 0.0584 0.050 0.009770 98 97 70-130 0.931 30 Dieldrin 0.0523 0.0518 0.050 ND 105 104 70-130 0.860 30 Endrin 0.0484 0.0482 0.050 ND 97 96 70-130 0.352 30
Heptachlor 0.0534 0.0540 0.050 ND 106 107 70-130 1.11 30 Surrogate Recovery
Decachlorobiphenyl 0.0393 0.0386 0.050 79 77 70-130 1.75 30 QA/QC Officer
CDPH ELAP 1644 ♦ NELAP 4033ORELAP

Page 37 of 57 ends

Project: 1401-2172; Cupertino (Sedgwick SSI)
Date Analyzed: 10/31/15
Date Prepared: 10/28/15
WorkOrder: 1510A30
BatchID: 112206
Analytical Method: SW8081A
Unit: mg/kg
Sample ID: MB/LCS-112206
Instrument: GC23
Matrix: Soil
Extraction Method: SW3550B/3620B
QC Summary Report for SW8081A w/ Florisil Clean-Up
Analyte MB
Result
LCS
Result
RL SPK
Val
MB SS
%REC
LCS
%REC
LCS
Limits
Aldrin ND 0.0454 0.0010 0.050 - 91 70-130
a-BHC ND - 0.0010 - - - -
b-BHC ND - 0.0010 - - - -
d-BHC ND - 0.0010 - - - -
g-BHC ND 0.0476 0.0010 0.050 - 95 70-130
Chlordane (Technical) ND - 0.025 - - - -
a-Chlordane ND - 0.0010 - - - -
g-Chlordane ND - 0.0010 - - - -
p,p-DDD ND - 0.0010 - - - -
p,p-DDE ND - 0.0010 - - - -
p,p-DDT ND 0.0523 0.0010 0.050 - 105 70-130
Dieldrin ND 0.0556 0.0010 0.050 - 111 70-130
Endosulfan I ND - 0.0010 - - - -
Endosulfan II ND - 0.0010 - - - -
Endosulfan sulfate ND - 0.0010 - - - -
Endrin ND 0.0509 0.0010 0.050 - 102 70-130
Endrin aldehyde ND - 0.0010 - - - -
Endrin ketone ND - 0.0010 - - - -
Heptachlor ND 0.0507 0.0010 0.050 - 101 70-130
Heptachlor epoxide ND - 0.0010 - - - -
Hexachlorobenzene ND - 0.010 - - - -
Hexachlorocyclopentadiene ND - 0.020 - - - -
Methoxychlor ND - 0.0010 - - - -
Toxaphene ND - 0.050 - - - -
Surrogate Recovery
Decachlorobiphenyl 0.0435 0.0460 0.050 87 92 70-130
QA/QC Officer
CDPH ELAP 1644 ♦ NELAP 4033ORELAP
(Cont.)

Page 38 of 57 ends

Project: 1401-2172; Cupertino (Sedgwick SSI)
Date Analyzed: 10/29/15
Date Prepared: 10/28/15
WorkOrder: 1510A30
BatchID: 112158
Analytical Method: SW6020
Unit: mg/Kg
Sample ID: MB/LCS-112158
1510A27-007AMS/MSD
1510A27-007APDS
Instrument: ICP-MS1, ICP-MS2
Matrix: Soil
Extraction Method: SW3050B
QC Summary Report for Metals
Analyte MB
Result
LCS
Result
RL SPK
Val
MB SS
%REC
LCS
%REC
LCS
Limits
Lead ND 51.0 0.50 50 - 102 75-125
Surrogate Recovery
Terbium 508 537 500 102 107 70-130
Analyte MS
Result
MSD
Result
SPK
Val
SPKRef
Val
MS
%REC
MSD
%REC
MS/MSD
Limits

RPD RPD
Limit
Lead 78.6 68.7 50 19.52 118 98 75-125 13.3 20
Surrogate Recovery
Terbium 561 577 500 112 115 70-130 2.81 20
QA/QC Officer
CDPH ELAP 1644 ♦ NELAP 4033ORELAP
(Cont.)

Page 39 of 57 ends

Project: 1401-2172; Cupertino (Sedgwick SSI)
Date Analyzed: 10/30/15
Date Prepared: 10/28/15
WorkOrder: 1510A30
BatchID: 112164
Analytical Method: SW6020
Unit: mg/Kg
Sample ID: MB/LCS-112164
1510A30-050AMS/MSD
1510A30-050APDS
Instrument: ICP-MS1
Matrix: Soil
Extraction Method: SW3050B
QC Summary Report for Metals
Analyte MB
Result
LCS
Result
RL SPK
Val
MB SS
%REC
LCS
%REC
LCS
Limits
Lead ND 50.6 0.50 50 - 101 75-125
Surrogate Recovery
Terbium 539 541 500 108 108 70-130
Analyte MS
Result
MSD
Result
SPK
Val
SPKRef
Val
MS
%REC
MSD
%REC
MS/MSD
Limits

RPD RPD
Limit
Lead 136 82.4 50 65 142,F8 34,F8 75-125 49.1,F8 20
Surrogate Recovery
Terbium 522 379 500 104 76 70-130 31.6,F8 20
Analyte PDS
Result
SPK
Val
SPKRef
Val
PDS
%REC
PDS
Limits
Lead 116 50 65 102 80-120
QA/QC Officer
CDPH ELAP 1644 ♦ NELAP 4033ORELAP
(Cont.)

Page 40 of 57 ends

Project: 1401-2172; Cupertino (Sedgwick SSI)
Date Analyzed: 11/5/15
Date Prepared: 11/4/15
WorkOrder: 1510A30
BatchID: 112437
Analytical Method: SW6020
Unit: mg/Kg
Sample ID: MB/LCS-112437
1511184-035AMS/MSD
1511184-035APDS
Instrument: ICP-MS1, ICP-MS2
Matrix: Soil
Extraction Method: SW3050B
QC Summary Report for Metals
Analyte MB
Result
LCS
Result
RL SPK
Val
MB SS
%REC
LCS
%REC
LCS
Limits
Lead ND 50.6 0.50 50 - 101 75-125
Surrogate Recovery
Terbium 583 495 500 117 99 70-130
Analyte MS
Result
MSD
Result
SPK
Val
SPKRef
Val
MS
%REC
MSD
%REC
MS/MSD
Limits

RPD RPD
Limit
Lead 66.5 60.0 50 23.13 87 74,F8 75-125 10.3 20
Surrogate Recovery
Terbium 488 498 500 98 100 70-130 1.99 20
Analyte PDS
Result
SPK
Val
SPKRef
Val
PDS
%REC
PDS
Limits
Lead 72.3 50 23.13 98 80-120
QA/QC Officer
CDPH ELAP 1644 ♦ NELAP 4033ORELAP

Page 41 of 57 ends

Project: 1401-2172; Cupertino (Sedgwick SSI)
Date Analyzed: 10/29/15
Date Prepared: 10/28/15
WorkOrder: 1510A30
BatchID: 112159
Analytical Method: E200.8
Unit: µg/L
Sample ID: MB/LCS-112159
1510A30-057AMS/MSD
Instrument: ICP-MS1
Matrix: Water
Extraction Method: E200.8
QC Summary Report for Metals
Analyte MB
Result
LCS
Result
RL SPK
Val
MB SS
%REC
LCS
%REC
LCS
Limits
Lead ND 52.1 0.50 50 - 104 85-115
Surrogate Recovery
Terbium 782 797 750 104 106 70-130
Analyte MS
Result
MSD
Result
SPK
Val
SPKRef
Val
MS
%REC
MSD
%REC
MS/MSD
Limits

RPD RPD
Limit
Lead 52.2 51.2 50 ND 104 102 70-130 1.86 20
Surrogate Recovery
Terbium 806 778 750 107 104 70-130 3.50 20
QA/QC Officer
CDPH ELAP 1644 ♦ NELAP 4033ORELAP

Page 42 of 57 ends

McCampbell Analytical, Inc.
1534 Willow Pass Rd
Pittsburg, CA 94565-1701
(925) 252-9262

CHAIN-OF-CUSTODY RECORD
Page
Lab ID Matrix Collection Date Hold
Requested Tests (See legend below)
Report to:

Alan J. Klein
555 University Ave., Suite 110
Sacramento, CA 95825
(916) 333-5920 FAX: (916) 333-5921
PO:
11/02/2015
Client ID
ProjectNo: 1401-2172; Cupertino (Sedgwick SSI)
WorkOrder: 1510A30
1 of 3
Date Printed:

Date Received: 10/28/2015
1 2 3 4 5 6 7 8 9 10 11 12
Padre Associates. Inc.

Bill to:

Accounts Payable
Padre Associates. Inc.
1861 Knoll Drive
Ventura, CA 93003
Requested TAT: 5 days;
ClientCode: PAIS
Email: [email protected]
EDF EQuIS Email HardCopy ThirdParty
[email protected]
Excel J-flagWriteOn
cc/3rd Party:

WaterTrax
A1510A30-001 Soil 10/27/2015 9:00P-4A (2-2.5')
A1510A30-003 Soil 10/27/2015 10:00P-10A (SURF)
A1510A30-004 Soil 10/27/2015 10:03P-10A (1-1.5')
A1510A30-005 Soil 10/27/2015 10:12P-10B (SURF) A
A1510A30-006 Soil 10/27/2015 10:15P-10B (1-1.5')
A1510A30-007 Soil 10/27/2015 9:47P-10C (SURF)
A1510A30-008 Soil 10/27/2015 9:48P-10C (1-1.5')
A1510A30-009 Soil 10/27/2015 9:49P-10D (SURF) A
A1510A30-010 Soil 10/27/2015 9:53P-10D (1-1.5')
A1510A30-011 Soil 10/27/2015 9:34P-11A (SURF)
A1510A30-012 Soil 10/27/2015 9:37P-11A (1-1.5')
A1510A30-013 Soil 10/27/2015 9:23P-11B (SURF)
B1510A30-013 Soil 10/27/2015 9:23P-11B (SURF) DUP
A1510A30-014 Soil 10/27/2015 9:26P-11B (1-1.5')
A1510A30-015 Soil 10/27/2015 9:35P-15A (SURF) A
Prepared by: Jena Alfaro
NOTE: Soil samples are discarded 60 days after results are reported unless other arrangements are made (Water samples are 30 days).

Hazardous samples will be returned to client or disposed of at client expense.

Comments: ALWAYS SETUP 8081 and/or 8082 w/ ESL TESTCODES!!!! Give to Blake for review 8081_ESL_S (J) 8081_FLORISIL_S PBMS_TTLC_S PBMS_TTLC_W1 2 3 4 5 6 7 8
9 10
Test Legend:
11 12

Page 43 of 57 ends

McCampbell Analytical, Inc.
1534 Willow Pass Rd
Pittsburg, CA 94565-1701
(925) 252-9262

CHAIN-OF-CUSTODY RECORD
Page
Lab ID Matrix Collection Date Hold
Requested Tests (See legend below)
Report to:

Date Received: 10/28/2015
1 2 3 4 5 6 7 8 9 10 11 12
Padre Associates. Inc.

Bill to:

WaterTrax
A1510A30-016 Soil 10/27/2015 9:38P-15A (1-1.5')
B1510A30-016 Soil 10/27/2015 9:38P-15A (1-1.5') DUP
A1510A30-017 Soil 10/27/2015 10:06SS-6A (SURF) A
A1510A30-018 Soil 10/27/2015 10:08SS-6A (1-1.5')
A1510A30-020 Soil 10/27/2015 10:29SS-6B (SURF) A
A1510A30-021 Soil 10/27/2015 10:33SS-6B (1-1.5')
A1510A30-023 Soil 10/27/2015 10:40SS-6C (SURF) A
A1510A30-024 Soil 10/27/2015 10:42SS-6C (1-1.5')
A1510A30-026 Soil 10/27/2015 10:41SS-6D (SURF) A
A1510A30-027 Soil 10/27/2015 10:46SS-6D (1-1.5')
A1510A30-029 Soil 10/27/2015 10:19SS-6E (SURF)
A1510A30-030 Soil 10/27/2015 10:22SS-6E (1-1.5')
1510A30-047 Soil 10/27/2015 9:00P-13A (SURF) A
1510A30-048 Soil 10/27/2015 9:05P-13B (SURF) A
1510A30-049 Soil 10/27/2015 8:55P-17A (SURF) A
Prepared by: Jena Alfaro
NOTE: Soil samples are discarded 60 days after results are reported unless other arrangements are made (Water samples are 30 days).

Hazardous samples will be returned to client or disposed of at client expense.

Comments: ALWAYS SETUP 8081 and/or 8082 w/ ESL TESTCODES!!!! Give to Blake for review 8081_ESL_S (J) 8081_FLORISIL_S PBMS_TTLC_S PBMS_TTLC_W1 2 3 4 5 6 7 8
9 10
Test Legend:
11 12

Page 44 of 57 ends

McCampbell Analytical, Inc.
1534 Willow Pass Rd
Pittsburg, CA 94565-1701
(925) 252-9262

CHAIN-OF-CUSTODY RECORD
Page
Lab ID Matrix Collection Date Hold
Requested Tests (See legend below)
Report to:

Date Received: 10/28/2015
1 2 3 4 5 6 7 8 9 10 11 12
Padre Associates. Inc.

Bill to:

WaterTrax
1510A30-049 Soil 10/27/2015 8:55P-17A (SURF) DUP B
1510A30-050 Soil 10/27/2015 8:50P-28A (SURF) A
1510A30-051 Soil 10/27/2015 9:10P-29 (SURF) A
1510A30-052 Soil 10/27/2015 9:14P-29A (SURF) A
1510A30-053 Soil 10/27/2015 9:17P-30 (SURF) A
1510A30-054 Soil 10/27/2015 9:21P-31 (SURF) A
1510A30-055 Soil 10/27/2015 9:24P-32 (SURF) A
1510A30-056 Soil 10/27/2015 9:28P-33 (SURF) A
1510A30-057 Water 10/27/2015 12:00FB #1 A
1510A30-058 Water 10/27/2015 12:05EB #1 A
Prepared by: Jena Alfaro
NOTE: Soil samples are discarded 60 days after results are reported unless other arrangements are made (Water samples are 30 days).

Hazardous samples will be returned to client or disposed of at client expense.

Comments: ALWAYS SETUP 8081 and/or 8082 w/ ESL TESTCODES!!!! Give to Blake for review 8081_ESL_S (J) 8081_FLORISIL_S PBMS_TTLC_S PBMS_TTLC_W1 2 3 4 5 6 7 8
9 10
Test Legend:
11 12

Page 45 of 57 ends

Lab ID Client ID Collection Date
& Time
Date Received:

TATMatrix Test Name Containers
/Composites

WORK ORDER SUMMARY
Work Order: 1510A30
Comments: ALWAYS SETUP 8081 and/or 8082 w/ ESL TESTCODES!!!! Give to Blake for review
Client Name: PADRE ASSOCIATES. INC.

Project: 1401-2172; Cupertino (Sedgwick SSI)
QC Level: LEVEL 2
HoldDe-
chlorinated
SubOutBottle & Preservative
10/28/2015
Sediment
Content
EDF Fax Email HardCopy ThirdPartyExcel J-flagWriteOn
Alan J. KleinClient Contact:
[email protected]'s Email:

WaterTrax
McCampbell Analytical, Inc.
1534 Willow Pass Road, Pittsburg, CA 94565-1701
Toll Free Telephone: (877) 252-9262 / Fax: (925) 252-9269 http://www.mccampbell.com / E-mail: [email protected]"When Quality Counts" 1510A30-001A P-4A (2-2.5') 10/27/2015 9:00 5 daysSoil SW8081A (OC Pesticides) 1 Stainless Steel tube 2"x6" 1510A30-002A P-4A (3-3.5') 10/27/2015 9:10Soil 1 Stainless Steel tube 2"x6" 1510A30-003A P-10A (SURF) 10/27/2015 10:00 5 daysSoil SW8081A (OC Pesticides) 1 Stainless Steel tube 2"x6" 1510A30-004A P-10A (1-1.5') 10/27/2015 10:03 5 daysSoil SW8081A (OC Pesticides) 1 Stainless Steel tube 2"x6" 1510A30-005A P-10B (SURF) 10/27/2015 10:12 5 daysSoil SW8081A (OC Pesticides w/ Florisil Clean-Up)
1 Stainless Steel tube 2"x6"
5 daysSW8081A (OC Pesticides)
1510A30-006A P-10B (1-1.5') 10/27/2015 10:15 5 daysSoil SW8081A (OC Pesticides) 1 Stainless Steel tube 2"x6" 1510A30-007A P-10C (SURF) 10/27/2015 9:47 5 daysSoil SW8081A (OC Pesticides) 1 Stainless Steel tube 2"x6" 1510A30-008A P-10C (1-1.5') 10/27/2015 9:48 5 daysSoil SW8081A (OC Pesticides) 1 Stainless Steel tube 2"x6" 1510A30-009A P-10D (SURF) 10/27/2015 9:49 5 daysSoil SW8081A (OC Pesticides w/ Florisil Clean-Up)
1 Stainless Steel tube 2"x6"
5 daysSW8081A (OC Pesticides)
1510A30-010A P-10D (1-1.5') 10/27/2015 9:53 5 daysSoil SW8081A (OC Pesticides) 1 Stainless Steel tube 2"x6" 1510A30-011A P-11A (SURF) 10/27/2015 9:34 5 daysSoil SW8081A (OC Pesticides) 1 Stainless Steel tube 2"x6" 1510A30-012A P-11A (1-1.5') 10/27/2015 9:37 5 daysSoil SW8081A (OC Pesticides) 1 Stainless Steel tube 2"x6" 1510A30-013A P-11B (SURF) 10/27/2015 9:23 5 daysSoil SW8081A (OC Pesticides) 1 Stainless Steel tube 2"x6" 1510A30-013B P-11B (SURF) DUP 10/27/2015 9:23 5 daysSoil SW8081A (OC Pesticides) 1 Stainless Steel tube 2"x6" 1 of 5Page
- STLC and TCLP extractions require 2 days to complete; therefore, all TATs begin after the extraction is completed (i.e., One-day TAT yields results in 3 days from sample submission).

NOTES:
- MAI assumes that all material present in the provided sampling container is considered part of the sample - MAI does not exclude any material from the sample prior to sample preparation unless requested in writing by the client.

Page 46 of 57 ends

Lab ID Client ID Collection Date
& Time
Date Received:

TATMatrix Test Name Containers
/Composites

WORK ORDER SUMMARY
Work Order: 1510A30
Comments: ALWAYS SETUP 8081 and/or 8082 w/ ESL TESTCODES!!!! Give to Blake for review
Client Name: PADRE ASSOCIATES. INC.

WaterTrax
McCampbell Analytical, Inc.
1534 Willow Pass Road, Pittsburg, CA 94565-1701
Toll Free Telephone: (877) 252-9262 / Fax: (925) 252-9269 http://www.mccampbell.com / E-mail: [email protected]"When Quality Counts" 1510A30-014A P-11B (1-1.5') 10/27/2015 9:26 5 daysSoil SW8081A (OC Pesticides) 1 Stainless Steel tube 2"x6" 1510A30-015A P-15A (SURF) 10/27/2015 9:35 5 daysSoil SW6020 (Lead) 1 Stainless Steel tube 2"x6" 5 daysSW8081A (OC Pesticides)
1510A30-016A P-15A (1-1.5') 10/27/2015 9:38 5 daysSoil SW8081A (OC Pesticides) 1 Stainless Steel tube 2"x6" 1510A30-016B P-15A (1-1.5') DUP 10/27/2015 9:38 5 daysSoil SW8081A (OC Pesticides) 1 Stainless Steel tube 2"x6" 1510A30-017A SS-6A (SURF) 10/27/2015 10:06 5 daysSoil SW8081A (OC Pesticides w/ Florisil Clean-Up)
1 Stainless Steel tube 2"x6"
5 daysSW8081A (OC Pesticides)
1510A30-018A SS-6A (1-1.5') 10/27/2015 10:08 5 daysSoil SW8081A (OC Pesticides) 1 Stainless Steel tube 2"x6" 1510A30-019A SS-6A (2-2.5') 10/27/2015 10:12Soil 1 Stainless Steel tube 2"x6" 1510A30-020A SS-6B (SURF) 10/27/2015 10:29 5 daysSoil SW8081A (OC Pesticides w/ Florisil Clean-Up)
1 Stainless Steel tube 2"x6"
5 daysSW8081A (OC Pesticides)
1510A30-021A SS-6B (1-1.5') 10/27/2015 10:33 5 daysSoil SW8081A (OC Pesticides) 1 Stainless Steel tube 2"x6" 1510A30-022A SS-6B (2-2.5') 10/27/2015 10:36Soil 1 Stainless Steel tube 2"x6" 1510A30-023A SS-6C (SURF) 10/27/2015 10:40 5 daysSoil SW8081A (OC Pesticides w/ Florisil Clean-Up)
1 Stainless Steel tube 2"x6"
5 daysSW8081A (OC Pesticides)
2 of 5Page
- STLC and TCLP extractions require 2 days to complete; therefore, all TATs begin after the extraction is completed (i.e., One-day TAT yields results in 3 days from sample submission).

Page 47 of 57 ends

Lab ID Client ID Collection Date
& Time
Date Received:

TATMatrix Test Name Containers
/Composites

WORK ORDER SUMMARY
Work Order: 1510A30
Comments: ALWAYS SETUP 8081 and/or 8082 w/ ESL TESTCODES!!!! Give to Blake for review
Client Name: PADRE ASSOCIATES. INC.

WaterTrax
McCampbell Analytical, Inc.
1534 Willow Pass Road, Pittsburg, CA 94565-1701
Toll Free Telephone: (877) 252-9262 / Fax: (925) 252-9269 http://www.mccampbell.com / E-mail: [email protected]"When Quality Counts" 1510A30-024A SS-6C (1-1.5') 10/27/2015 10:42 5 daysSoil SW8081A (OC Pesticides) 1 Stainless Steel tube 2"x6" 1510A30-025A SS-6C (2-2.5') 10/27/2015 10:46Soil 1 Stainless Steel tube 2"x6" 1510A30-026A SS-6D (SURF) 10/27/2015 10:41 5 daysSoil SW8081A (OC Pesticides w/ Florisil Clean-Up)
1 Stainless Steel tube 2"x6"
5 daysSW8081A (OC Pesticides)
1510A30-027A SS-6D (1-1.5') 10/27/2015 10:46 5 daysSoil SW8081A (OC Pesticides) 1 Stainless Steel tube 2"x6" 1510A30-028A SS-6D (2-2.5') 10/27/2015 10:51Soil 1 Stainless Steel tube 2"x6" 1510A30-029A SS-6E (SURF) 10/27/2015 10:19 5 daysSoil SW8081A (OC Pesticides) 1 Stainless Steel tube 2"x6" 1510A30-030A SS-6E (1-1.5') 10/27/2015 10:22 5 daysSoil SW8081A (OC Pesticides) 1 Stainless Steel tube 2"x6" 1510A30-031A SS-6E (2-2.5') 10/27/2015 10:27Soil 1 Stainless Steel tube 2"x6" 1510A30-032A SS-6F (SURF) 10/27/2015 11:04Soil 1 Stainless Steel tube 2"x6" 1510A30-033A SS-6F (1-1.5') 10/27/2015 11:07Soil 1 Stainless Steel tube 2"x6" 1510A30-034A SS-6F (2-2.5') 10/27/2015 11:11Soil 1 Stainless Steel tube 2"x6" 1510A30-035A SS-6G (SURF) 10/27/2015 11:33Soil 1 Stainless Steel tube 2"x6" 1510A30-036A SS-6G (1-1.5') 10/27/2015 11:34Soil 1 Stainless Steel tube 2"x6" 1510A30-037A SS-6G (2-2.5') 10/27/2015 11:36Soil 1 Stainless Steel tube 2"x6" 1510A30-038A SS-6H (SURF) 10/27/2015 11:10Soil 1 Stainless Steel tube 2"x6" 3 of 5Page
- STLC and TCLP extractions require 2 days to complete; therefore, all TATs begin after the extraction is completed (i.e., One-day TAT yields results in 3 days from sample submission).

Page 48 of 57 ends

Lab ID Client ID Collection Date
& Time
Date Received:

TATMatrix Test Name Containers
/Composites

WORK ORDER SUMMARY
Work Order: 1510A30
Comments: ALWAYS SETUP 8081 and/or 8082 w/ ESL TESTCODES!!!! Give to Blake for review
Client Name: PADRE ASSOCIATES. INC.

WaterTrax
McCampbell Analytical, Inc.
1534 Willow Pass Road, Pittsburg, CA 94565-1701
Toll Free Telephone: (877) 252-9262 / Fax: (925) 252-9269 http://www.mccampbell.com / E-mail: [email protected]"When Quality Counts" 1510A30-039A SS-6H (1-1.5') 10/27/2015 11:13Soil 1 Stainless Steel tube 2"x6" 1510A30-040A SS-6H (2-2.5') 10/27/2015 11:17Soil 1 Stainless Steel tube 2"x6" 1510A30-041A SS-6I (SURF) 10/27/2015 10:55Soil 1 Stainless Steel tube 2"x6" 1510A30-042A SS-6I (1-1.5') 10/27/2015 10:59Soil 1 Stainless Steel tube 2"x6" 1510A30-043A SS-6I (2-2.5') 10/27/2015 11:01Soil 1 Stainless Steel tube 2"x6" 1510A30-044A SS-6J (SURF) 10/27/2015 11:35Soil 1 Stainless Steel tube 2"x6" 1510A30-045A SS-6J (1-1.5') 10/27/2015 11:38Soil 1 Stainless Steel tube 2"x6" 1510A30-046A SS-6J (2-2.5') 10/27/2015 11:44Soil 1 Stainless Steel tube 2"x6" 1510A30-047A P-13A (SURF) 10/27/2015 9:00 5 daysSoil SW6020 (Lead) 1 Stainless Steel tube 2"x6" 1510A30-048A P-13B (SURF) 10/27/2015 9:05 5 daysSoil SW6020 (Lead) 1 Stainless Steel tube 2"x6" 1510A30-049A P-17A (SURF) 10/27/2015 8:55 5 daysSoil SW6020 (Lead) 1 Stainless Steel tube 2"x6" 1510A30-049B P-17A (SURF) DUP 10/27/2015 8:55 5 daysSoil SW6020 (Lead) 1 Stainless Steel tube 2"x6" 1510A30-050A P-28A (SURF) 10/27/2015 8:50 5 daysSoil SW6020 (Lead) 1 Stainless Steel tube 2"x6" 1510A30-051A P-29 (SURF) 10/27/2015 9:10 5 daysSoil SW6020 (Lead) 1 Stainless Steel tube 2"x6" 1510A30-052A P-29A (SURF) 10/27/2015 9:14 5 daysSoil SW6020 (Lead) 1 Stainless Steel tube 2"x6" 1510A30-053A P-30 (SURF) 10/27/2015 9:17 5 daysSoil SW6020 (Lead) 1 Stainless Steel tube 2"x6" 4 of 5Page
- STLC and TCLP extractions require 2 days to complete; therefore, all TATs begin after the extraction is completed (i.e., One-day TAT yields results in 3 days from sample submission).

Page 49 of 57 ends

Lab ID Client ID Collection Date
& Time
Date Received:

TATMatrix Test Name Containers
/Composites

WORK ORDER SUMMARY
Work Order: 1510A30
Comments: ALWAYS SETUP 8081 and/or 8082 w/ ESL TESTCODES!!!! Give to Blake for review
Client Name: PADRE ASSOCIATES. INC.

Page 50 of 57 ends

Page 51 of 57 ends

Page 52 of 57 ends

Page 53 of 57 ends

Page 54 of 57 ends

Page 55 of 57 ends

Page 56 of 57 ends

Sample Receipt Checklist
McCampbell Analytical, Inc.
1534 Willow Pass Road, Pittsburg, CA 94565-1701
Toll Free Telephone: (877) 252-9262 / Fax: (925) 252-9269 http://www.mccampbell.com / E-mail: [email protected]"When Quality Counts" Client Name: Padre Associates. Inc.

WorkOrder №: 1510A30
Date and Time Received: 10/28/2015 6:33:12 PM
LogIn Reviewed by: Jena Alfaro
Matrix: Soil/Water Carrier: Daniel (MAI Courier)
Shipping container/cooler in good condition? Yes No
Custody seals intact on shipping container/cooler? Yes No NA Samples Received on Ice? Yes No
Chain of custody present? Yes No
Chain of custody signed when relinquished and received? Yes No Chain of custody agrees with sample labels? Yes No
Samples in proper containers/bottles? Yes No
Sample containers intact? Yes No
Sufficient sample volume for indicated test? Yes No
All samples received within holding time? Yes No
NASample/Temp Blank temperature
Yes No NAWater - VOA vials have zero headspace / no bubbles? pH acceptable upon receipt (Metal: <2; 522: <4; 218.7: >8)? Yes No NA * NOTE: If the "No" box is checked, see comments below.

Temp: 3.8°C
Chain of Custody (COC) Information
Yes NoSample IDs noted by Client on COC?
Yes NoDate and Time of collection noted by Client on COC? Yes NoSampler's name noted on COC?
Sample Receipt Information
Sample Preservation and Hold Time (HT) Information
Sample labels checked for correct preservation? Yes No
Project Name: 1401-2172; Cupertino (Sedgwick SSI)
(Ice Type: WET ICE )
Comments:

Total Chlorine tested and acceptable upon receipt for EPA 522? Yes No NA UCMR3 Samples:

Free Chlorine tested and acceptable upon receipt for EPA 218.7, 300.1, 537, 539?
Yes No NA

Page 57 of 57 ends

APPENDIX D

LEADSPREAD

INPUT OUTPUT
MEDIUM LEVEL Percentile Estimate of Blood Pb (ug/dl PRG-90 Lead in Soil/Dust (ug/g) 310.0 50th 90th 95th 98th 99th (ug/g) Respirable Dust (ug/m3) 1.5 BLOOD Pb, CHILD 2.2 4.0 4.8 5.8 6.6 77 BLOOD Pb, PICA CHILD 4.4 8.0 9.5 11.5 13.1 39
units
Days per week days/wk
Geometric Standard Deviation PEF ug/dl percent PEF ug/dl percent Blood lead level of concern (ug/dl) Soil Contact 5.8E-5 0.02 1% 0.02 0% Skin area, residential cm2
Soil Ingestion 7.0E-3 2.18 99% 1.4E-2 4.36 100%
Soil adherence ug/cm2
Inhalation 2.0E-6 0.00 0% 0.00 0%
Dermal uptake constant (ug/dl)/(ug/day)
Soil ingestion mg/day
Soil ingestion, pica mg/day
Ingestion constant (ug/dl)/(ug/day)
Bioavailability unitless
Breathing rate m3/day
Inhalation constant (ug/dl)/(ug/day)
Click here for REFERENCES
Click here for ABBREVIATED INSTRUCTIONS FOR LEADSPREAD 8 2900

EXPOSURE PARAMETERS
typical with picaCHILDREN
7 200
LEAD RISK ASSESSMENT SPREADSHEET 8

CALIFORNIA DEPARTMENT OF TOXIC SUBSTANCES CONTROL

PATHWAYS
children
Pathway contribution Pathway contribution

1.6 1
Pathway

0.16 6.8

0.192
100
200

0.0001

0.44 EDIT RED CELL
Variable Units
PbS ug/g or ppm 310
Rfetal/maternal -- 0.9
BKSF ug/dL per ug/day 0.4
GSDi -- 1.8
PbB0 ug/dL 0.0
IRS g/day 0.050
AFS, D -- 0.12
EFS, D days/yr 250
ATS, D days/yr 365
PbBadult PbB of adult worker, geometric mean ug/dL 0.5
PbBfetal, 0.90 90th percentile PbB among fetuses of adult workers ug/dL 1.0 PbBt Target PbB level of concern (e.g., 10 ug/dL) ug/dL 1.0 P(PbBfetal > PbBt) Probability that fetal PbB > PbB t, assuming lognormal distribution % 9.2% PRG90 318
Click here for REFERENCES
Averaging time (same for soil and dust)
Soil ingestion rate (including soil-derived indoor dust) Absorption fraction (same for soil and dust)
Exposure frequency (same for soil and dust)
Description of Variable
Soil lead concentration
Fetal/maternal PbB ratio
Biokinetic Slope Factor
Geometric standard deviation PbB
Baseline PbB
CALCULATIONS OF BLOOD LEAD CONCENTRATIONS (PbBs) AND PRELMIINARY REMEDIATION GOAL (PRG)

MODIFIED VERSION OF USEPA ADULT LEAD MODEL

Cupertino City CouncilJune 17, 2025

Cupertino City Council
June 17, 2025