PHASE II ENVIRONMENTAL SITE ASSESSMENT 3229 San Leandro Street Oakland, California

Transcription

1 PHASE II ENVIRONMENTAL SITE ASSESSMENT 3229 San Leandro Street Oakland, California Mr. Gopakumar Nair City of Oakland Oakland, CA 16 October 2009 Project No

2

3 PHASE II ENVIRONMENTAL SITE ASSESSMENT 3229 San Leandro Street Oakland, California Mr. Gopakumar Nair City of Oakland Oakland, CA 16 October 2009 Project No

4 TABLE OF CONTENTS EXECUTIVE SUMMARY INTRODUCTION BACKGROUND Site Description Previous Environmental Investigations Aqua Terra Technologies (ATT) Treadwell and Rollo FIELD INVESTIGATION Soil Sampling Groundwater Sampling LABORATORY ANALYTICAL RESULTS Soil Analytical Results Above 2.0 Ft bgs 5 August Soil Analytical Results Below 2.0 Ft bgs 5 August Soil Analytical Results 9.5 Ft bgs 8 September CONCLUSIONS AND RECOMMENDATIONS LIMITATIONS... 8 REFERENCES TABLES FIGURES APPENDIX A CERTIFIED ANALYTICAL RESULTS AND CHAIN-OF-CUSTODY RECORDS

5 LIST OF TABLES Table 1 Table 2 Table 3 Soil Analytical Results - Organics Soil Analytical Results - Dioxins and Furans Soil Analytical Results - Metals LIST OF FIGURES Figure 1 Figure 2 Figure 3 Site Location Map Site Plan Sampling Locations

6 PHASE II ENVIRONMENTAL SITE ASSESSMENT 3229 San Leandro Street Oakland, California EXECUTIVE SUMMARY This Phase II Environmental Site Assessment (Phase II ESA) Report presents the results of soil and groundwater sampling activities performed at the property located at 3229 San Leandro Street in Oakland, California (Site) (Figure 1). The Site comprises Assessor s Parcel Number and is located in an area of Oakland that has historically been a mix of commercial/light industrial and residential land use. The Site is currently occupied by two small metal storage buildings, machine parts, a flat bed trailer, and a truck with a hoist. The Site was most recently used for storage by a marine facilities construction company, but is currently vacant. This Phase II ESA was performed to assess potential environmental conditions at the Site based on the results of a Phase I ESA performed by Treadwell and Rollo, Inc. (Treadwell & Rollo, 2009a). The Phase I ESA noted extensive staining by oil or other hazardous materials or petroleum products on pavement in various locations around the Site and other potential recognized environmental conditions at the Site. These conditions included an area where a former building burned, and historic use by facilities that commonly use hazardous materials or petroleum products. To assess the environmental conditions at the Site, Treadwell & Rollo collected soil samples from five soil borings on the Site. Groundwater samples were scheduled to be collected from two locations (SLTR-1 and SLTR-2), but groundwater was not encountered in these borings. Analytical results were compared with Regional Screening Levels (RSLs) established by the United States Environmental Protection Agency (EPA) and Environmental Screening Levels (ESLs) established by the California Regional Water Quality Control Board, San Francisco Bay Region (RWQCB). Soil results were evaluated with respect to soil RSLs and ESLs for both residential and industrial land use. The residential land use values were used to provide a broader range of potential future land uses. Chemicals detected in soil at the Site included volatile organic compounds (VOCs), organochlorine pesticides (OCPs), petroleum hydrocarbons, and metals OAK 16 October 2009

7 PHASE II ENVIRONMENTAL SITE ASSESSMENT 3229 San Leandro Street Oakland, California 1.0 INTRODUCTION This Phase II Environmental Site Assessment (Phase II ESA) Report presents the results of the recent activities to characterize and assess potential environmental conditions at the property located at 3229 San Leandro Street in Oakland, California (Site) (Figure 1). This assessment was performed in general accordance with Treadwell & Rollo s Proposal for Phase II Environmental Site Assessment, 3229 San Leandro Street, Oakland, California, dated 15 July 2009 (T&R, 2009b). Treadwell & Rollo performed this assessment to evaluate the potential for soil and/or groundwater contamination at the Site and identify the source or sources of contamination. To do this, Treadwell & Rollo collected and analyzed soil samples for chemical laboratory analysis of organic chemicals and metals. No groundwater was encountered at the Site to the maxium depth explored. Therefore, no groundwater samples were collected from the Site. The following sections include a Site description, a summary of previous investigations, a summary of field activities, a discussion of analytical results, and our conclusions and recommendations. 2.0 BACKGROUND 2.1 Site Description The Site consists of the property located at 3229 San Leandro Street, and is bound to the northeast by San Leandro Street (beyond which are residential properties), to the southeast and northwest by commercial properties and to the southwest by a commercial property (beyond which is a railroad rightof-way and railroad tracks). The Site is approximately ¼ acre in area and comprises Assessor s Parcel Number (Figure 2). The Site is at an elevation of approximately 34 feet above Mean Sea Level (T&R, 2009a). The ground surface in the Site vicinity slopes gently downward to the southwest. The Oakland inner harbor channel is located approximately ½ mile southwest of the Site. San Francisco Bay is approximately two miles to the southwest. Groundwater flow is variable in the vicinity of the Site, but the assumed general direction OAK 16 October 2009

8 of groundwater flow is to the inner harbor channel. Groundwater at the Site is not considered a drinking water source. 2.2 Previous Environmental Investigations Previous environmental investigations were performed at the Site by Aqua Terra Technologies in 1988 and Treadwell & Rollo in June, 2009 (T&R, 2009a). The following discussion summarizes the results of these studies Aqua Terra Technologies (ATT) A 1988 Phase I ESA report prepared by ATT was reviewed at the Oakland Fire Department (OFD) during the Treadwell & Rollo Phase I ESA. The ATT ESA mentioned a contaminant release at 3301 San Leandro Street (the adjacent property to the southwest) in The exact location of the release was not determined, since the address of the Site (3229 San Leandro Street) and that of the adjacent property were used interchangeably in many of the records examined by Treadwell & Rollo. Due to the illegibility of the ESA report, no further information was obtained, and the release could not be confirmed. It could not be determined if this reported release was related to the USTs that were removed from that property Treadwell and Rollo Treadwell & Rollo conducted a Phase I ESA in June, Based on the findings of the Phase I ESA, the Site had several commercial/light industrial uses since the early twentieth century. The documented Site uses were users of hazardous materials, and there was evidence of historical hazardous materials storage at the Site. Treadwell & Rollo observed extensive staining of pavement at various areas around the Site during a Site visit. In addition, vehicle storage and poor housekeeping practices were observed, as also indicated by the staining. 3.0 FIELD INVESTIGATION Treadwell & Rollo performed two field investigations, one on 5 August 2009 and another on 8 September Soil sampling was conducted in five locations (SLTR1-1 through SLTR1-5). The boring locations are shown on Figure OAK 2 16 October 2009

9 Prior to drilling, a boring permit was obtained from the Alameda County Environmental Health Department. Treadwell & Rollo also notified Underground Service Alert (USA) and subcontracted Precision Locating of Brentwood, California, to survey and locate underground utilities at marked boring locations. The following sections describe the drilling and sampling activities. 3.1 Soil Sampling On 5 August 2009, Vironex, Inc. advanced three soil borings (SLTR1-1 through SLTR1-3). The borings were advanced by direct push technology. Continuous cores were collected and the borings logged for soil type using the Unified Soil Classification System (ASTM Standard D 2487). Soil at the Site is primarily composed of fill to a depth of approximately 1.5 feet followed by alternating sandy clays and sandy silts to a depth of approximately 10.0 feet below ground surface (bgs). On 8 September 2009, Vironex, Inc. advanced two additional soil borings (SLTR1-4 and SLTR1-5) using direct push technology. On 5 August 2009, two soil samples, one shallow and one deeper, were collected from SLTR1-1 through SLTR1-3. Shallow samples were collected from depths ranging from 0.5 to 1.5 feet bgs. The deeper samples, collected from depths ranging from 2.0 to 4.0 feet bgs, were placed on hold with the laboratory pending shallow sample results. On 8 September 2009, one additional sample was collected from borings SLTR1-4 and SLTR1-5 at a depth of 9.5 feet bgs. Samples were collected in six-inch plastic tubes cut from the cores, capped, sealed, labeled and placed in chilled coolers for transport to Curtis and Tompkins, Ltd. of Berkeley, California (Curtis and Tompkins) for analysis. 3.2 Groundwater Sampling Groundwater samples were scheduled to be collected from two locations (SLTR-1 and SLTR-2). After advancing boring SLTR-1 to 20 feet bgs and SLTR-2 to 15 feet bgs, no groundwater was encountered. A temporary well was installed at SLTR-1 using 1-inch schedule 40 PVC with slotted screen and left for one hour to determine if measurable groundwater would enter the well. After one hour, no groundwater was found in SLTR-1. As a result, no groundwater samples were collected from the Site. 4.0 LABORATORY ANALYTICAL RESULTS Soil samples were sent to Curtis and Tompkins for analysis. Selected soil samples were analyzed for some or all of the following: OAK 3 16 October 2009

10 Volatile organic compounds (VOCs) by EPA Method 8260 Semi-volatile organic compounds (SVOCs) by EPA Method 8270 Total petroleum hydrocarbons quantified as gasoline (TPH-g) by EPA Method 8015 Total petroleum hydrocarbons quantified as diesel (TPH-d) and motor oil (TPH-mo) by EPA Method 8015, using the silica gel cleanup method Methyl tertiary butyl ether (MTBE) and benzene, toluene, ethylbenzene, and xylenes (BTEX) by EPA Method 8021 Organochlorine pesticides (OCPs) and polychlorinated biphenyls (PCBs) by EPA Method 8081/8082 Leaking Underground Fuel Tank Manual (LUFT 5) metals (cadmium, chromium, lead, nickel and zinc) by EPA Method 6010 California Assessment Manual (CAM 17) Metals (antimony, arsenic, barium, beryllium, cadmium, chromium, cobalt, copper, lead, mercury, molybdenum, nickel, selenium, silver, thallium, vanadium and zinc) or single metals by EPA Method 6010/7470 Dioxins and Furans by EPA Method Soil Analytical Results Above 2.0 Ft bgs 5 August 2009 To evaluate the concentrations of chemicals found in soil at the Site, detected concentrations were compared with Regional Screening Levels (RSLs) of the United States Environmental Protection Agency (EPA) (2009) and Environmental Screening Levels (ESLs)of the California Regional Water Quality Control Board, San Francisco Bay Region (RWQCB) (interim final 2007, revised 2008). Chemical-specific EPA RSLs for residential soil and industrial soil were used; no EPA RSLs have been developed for petroleum hydrocarbons. Metal concentrations were also compared to local ambient metal concentrations in soil, as calculated in - Analysis of Background Distributions of Metals in the Soil at Lawrence Berkeley National Laboratory, Lawrence Berkeley National Laboratory (LBNL, 2002). The VOC tetrachloroethene (PCE) was detected at a depth of 0.5 ft bgs at SLTR1-3 at a concentration of 0.13 milligrams per kilogram (mg/kg). The detected concentration did not exceed the EPA residential or industrial RSLs or the RWQCB residential or industrial ESLs OAK 4 16 October 2009

11 Several pesticides were detected in the sample from SLTR1-2 at a depth of 2.0 ft bgs. However, with the exception of dieldrin, the detected concentrations did not exceed the EPA residential or industrial RSLs or the RWQCB residential or industrial ESLs. Dieldrin was detected at a concentration of mg/kg which exceeds the EPA residential RSL and the RWQCB residential and industrial ESLs. SLTR1-2 was located where the former building was burned and is currently covered by vegetation. Pesticides can be very persistent in soils and the detected pesticides at SLTR1-2 are potentially residue from former pest control practices. TPH-d and TPH-mo were detected in the sample from SLTR1-3 at concentrations of 590 and 2,900 mg/kg, respectively, at a depth of 0.5 ft bgs. These concentrations exceed the RWQCB residential and industrial ESLs. EPA does not list RSLs for these compounds. TPH-d and TPH-mo in the soil may be the result of historic storage of vehicles and equipment on the Site. Dioxins and furans were tested in the sample from SLTR1-2 at a depth of 2.0 ft bgs, where the former building was burned. Dioxins and furans are often the result of combustion and can remain in soil for a long period. No dioxins or furans were detected at levels that exceeded the EPA residential and industrial RSLs or the RWQCB residential and industrial ESLs. Arsenic and vanadium were detected in the sample from SLTR1-2 at a depth of 2.0 ft bgs at concentrations of 2.5 and 25 mg/kg, respectively. The arsenic concentration exceeds the EPA residential and industrial RSLs and the RWQCB residential and industrial ESLs. The vanadium concentration exceeds the RWQCB residential ESL. However, these concentrations may reflect local natural background values which range between 0.3 to 42 mg/kg for arsenic and 0.79 to 120 mg/kg for vanadium (LBNL, 2002). The analytical results are summarized in Tables 1, 2, and 3. Copies of the laboratory analytical reports and chain-of-custody documentation are presented in Appendix A. 4.2 Soil Analytical Results Below 2.0 Ft bgs 5 August 2009 Based on the shallow soil analytical results, the laboratory analyzed the sample from SLTR1-3 at 3.5 ft bgs for TPH-d and TPH-mo and the sample from SLTR1-2 at 3.5 ft bgs for pesticides. TPH-d was detected at a concentration of 2.1 mg/kg at 3.5 ft bgs at SLTR1-3. TPH-mo was not detected. This OAK 5 16 October 2009

12 result does not exceed the RWQCB residential or industrial ESLs. No pesticides were detected in the sample from SLTR1-2. These analytical results are summarized in Tables 1 and 3. Copies of the laboratory analytical reports and chain-of-custody documentation are presented in Appendix A. 4.3 Soil Analytical Results 9.5 Ft bgs 8 September 2009 Based on the analytical results from soil sampling performed on 5 August 2009, additional sampling was performed in two locations (SLTR1-4 and SLTR1-5) on 8 September The samples were analyzed for VOCs, TPH-g, TPH-d, TPH-mo and CAM 17 metals. In addition, a duplicate sample from SLTR1-5 (SLTR D) was analyzed for CAM 17 metals for Quality Assurance/Quality Control (QA/QC). No VOCs, TPH-g, TPH-d, or TPH-mo were detected. Among the CAM 17 metals, arsenic, cobalt, nickel and vanadium were detected in the sample from SLTR1-4 at concentrations of 3.6, 28, 240 and 40 mg/kg, respectively. The arsenic concentration exceeds the EPA residential and industrial RSLs and the RWQCB residential and industrial ESLs. The cobalt concentration exceeds the EPA residential RSL. The nickel concentration exceeds the RWQCB residential and industrial ESLs. The vanadium concentration exceeds the RWQCB residential ESL. Arsenic and vanadium were detected in the sample from SLTR1-5 at concentrations of 9.7 and 44 mg/kg, respectively. The arsenic concentration exceeds the EPA residential and industrial RSLs and the RWQCB residential and industrial ESLs. The vanadium concentration exceeds the RWQCB residential ESL. However, these concentrations may reflect local natural background values which range between 0.3 to 42 mg/kg for arsenic, 0.92 to 29 mg/kg for cobalt, 6.0 to 380 mg/kg for nickel, and 0.79 to 120 mg/kg for vanadium (LBNL, 2002). With the exception of antimony which was not detected above the reporting limit in the primary sample from SLTR1-5, but detected in the QA/QC sample SLTR D sample at a concentration of 2.4 mg/kg, metal concentrations in the QA/QC sample correlated to those of the primary sample. These samples measure laboratory precision by repeating analyses on similar samples. The laboratory QA/QC results reported on the laboratory reports (Appendix A) were within acceptable parameters. These analytical results are summarized in Tables 1 and 3. Copies of the laboratory analytical reports and chain-of-custody documentation are presented in Appendix A OAK 6 16 October 2009

13 5.0 CONCLUSIONS AND RECOMMENDATIONS Treadwell & Rollo evaluated the potential for soil and/or groundwater contamination at the Site and has the following conclusions. Soils are generally fine-grained and groundwater flow is limited. PCE, pesticides, TPH-d, and TPH-mo are present is shallow soil. Specifically our investigation found the following: The VOC tetrachloroethene (PCE) was detected in one shallow soil sample in the southern portion of the Site at a concentration that did not exceed the EPA residential or industrial RSLs, or the RWQCB residential or industrial ESLs. Of the pesticides detected, dieldrin in one sample in the northern portion of the Site exceeded the EPA residential RSL and the RWQCB residential and industrial ESLs. No pesticides were detected in deeper soil at this location. Total petroleum hydrocarbons as diesel (TPH-d) and total petroleum hydrocarbons as motor oil (TPH-mo) exceeded the RWQCB residential and industrial ESLs in one shallow soil sample in the southeastern portion of the Site. EPA does not list RSLs for this compound. In a deeper sample at this location, TPH-d was below the screening levels, and TPH-mo was not detected. Arsenic exceeded the EPA residential and industrial RSLs and the RWQCB residential and industrial ESLs in three samples. Cobalt exceeded the EPA residential RSL in one sample. Nickel exceeded the RWQCB residential and industrial ESLs in one sample. Vanadium exceeded the RWQCB residential ESL in three samples. However, the detected concentrations were within the local natural background levels for these metals in soil. Treadwell & Rollo recommends that a soil mitigation plan (SMP) be prepared prior to redevelopment of the Site to address mitigation of soil in the areas where PCE, petroleum hydrocarbons and pesticides were found in shallow soil OAK 7 16 October 2009

14 6.0 LIMITATIONS Descriptions of specific field activities and historical events are based on our observations and on information provided by others. The opinions and information presented in this report apply to Site conditions and the information that was available at the time the work was performed and do not apply to changes of which we are not aware or have not had the opportunity to evaluate OAK 8 16 October 2009

15 REFERENCES Aqua Terra Technologies (ATT), 1988, Phase I Environmental Site Assessment, 3301 San Leandro Street, Oakland, California (poor quality copy reviewed at Oakland Fire Department). Lawrence Berkeley National Laboratory, 2002, Analysis of Background Distributions of Metals in the Soil at Lawrence Berkeley National Laboratory, dated June. Treadwell & Rollo (T&R), 2009a, Phase I Environmental Site Assessment, 3229 San Leandro Street, Oakland, California, dated 9 October. Treadwell & Rollo (T&R), 2009b, Proposal for Phase II Environmental Site Assessment, 3229 San Leandro Street, Oakland, California, dated 15 July.

16 TABLES

17 Table 1 Soil Analytical Results - Organics 3229 San Leandro Street Oakland, California Project: Sample ID Depth (feet) Sample Date PCE All other VOCs SVOCs Aldrin Heptachlor Epoxide Dieldrin alphachlordane 1 gammachlordane 1 All other OCPs PCBs TPHg TPHd TPHmo BTEX MTBE SLTR /5/2009 <0.005 ND ND NA NA NA NA NA NA NA < ND <0.02 SLTR /5/2009 <0.005 ND NA ND ND < <0.005 <0.02 SLTR /5/2009 NA NA NA <0.002 <0.002 <0.003 <0.002 <0.002 ND NA NA NA NA NA NA SLTR /5/ ND NA NA NA NA NA NA NA NA < ,900 <0.005 <0.02 SLTR /5/2009 NA NA NA NA NA NA NA NA NA NA NA 2.1 <5.0 NA NA SLTR /8/2009 <0.01 ND NA NA NA NA NA NA NA NA <1.0 <1.0 <5.0 <0.005 <0.005 SLTR /8/2009 <0.005 ND NA NA NA NA NA NA NA NA <1.0 <1.0 <5.0 <0.005 <0.005 Residential RSL Industrial/commercial RSL Residential ESL (A) Industrial/commercial ESL (A) , Residential ESL (B) Industrial/commercial ESL (B) , Notes: RSL = Screening level - Environmental Protection Agency (EPA) criteria ESL (A) = Environmental Screening Level - Regional Water Quality Control Board (RWQCB) criteria where groundwater is a potential potential source of drinking water ESL (B) = Environmental Screening Level - Regional Water Quality Control Board (RWQCB) criteria where groundwater is not a potential potential source of drinking water All results, SLs and ESLs are given in milligrams per kilogram (mg/kg) 1. No number is given for specific chlordane specie; therefore, the number used is for chlordane in general Silica gel cleanup method 3630C was used for TPH-d and TPH-mo The notation -- may be used in the table If an RSL or ESL is not given = Exceeds both a residential and an industrial RSL or ESL PCE = Tetrachloroethene VOC = Volatile Orgainc Compound SVOC = Semi-volatile Organic Compound OCP = Organochlorinated Pesticide PCB = Polychlorinated Biphenyl TPH = Total Petroleum Hydrocarbon quantified as gasoline (TPH-g), diesel (TPH-d), and motor oil (TPH-mo) BTEX = Benzene, Toulene, Ethylbenzene, and Xylene MTBE = Methyl Tertiary Butyl Ether ND = non detect NA = not analyzed OAK_Table 1 1 of 1 16 October 2009

18 Table 2 Soil Analytical Results - Dioxins and Furans 3229 San Leandro Street Oakland, California Project: Sample ID Depth (feet) Sample Date 1,2,3,4,7,8-1,2,3,4,7,8-1,2,3,6,7,8- Hexa CDD 1 Hexa CDF 2 Hexa CDD 1,2,3,6,7,8- Hexa CDF 1,2,3,7,8,9- Hexa CDD 1,2,3,7,8,9- Hexa CDF 1,2,3,7,8- Penta CDD 1,2,3,7,8- Penta CDF 2,3,4,6,7,8- Hexa CDF 2,3,7,8- Tetra CDD 2,3,7,8- Tetra CDF 2,3,4,7,8- Penta CDF 1,2,3,4,6,7,8- Hepta CDD 1,2,3,4,6,7,8- Hepta CDF 1,2,3,4,7,8,9- Hepta CDF OCTA CDD OCTA CDF SLTR /5/ Residential RSL Industrial/commercial RSL Residential ESL (A) Industrial/commercial ESL (A) Residential ESL (B) Industrial/commercial ESL (B) Notes: 1. CDD = Chloro Dibenzo-p-Dioxin 2. CDF = Chloro Dibenzo-p-Furan RSL = Screening level - Environmental Protection Agency (EPA) criteria RSLs for all forms of Hexa CDD taken from Hexachlorodibenzo-p-dioxin residential and industrial RSLs RSLs for Tetra CDD taken from TCDD,2,3,7,8 residential and industrial RSLs RSLs for all forms of Hexa CDF taken from HxCDF,2,3,7,8- residential and industrial RSLs ESL (A) = Environmental Screening Level - Regional Water Quality Control Board (RWQCB) criteria where groundwater is a potential potential source of drinking water ESL (B) = Environmental Screening Level - Regional Water Quality Control Board (RWQCB) criteria where groundwater is not a potential potential source of drinking water All results, RSLs and ESLs are given in milligrams per kilogram (mg/kg) The notation -- may be used in the table If an RSL or ESL is not given OAK_Table 2 1 of 1 16 October 2009

19 Table 3 Soil Analytical Results - Metals 3229 San Leandro Street Oakland, California Project: Sample ID Depth (feet) Sample Date Antimony Arsenic Barium Beryllium Cadmium Chromium Cobalt Copper Lead Mercury 1 Molybdenum Nickel 2 Selenium Silver Thallium 3 Vanadium Zinc SLTR /5/2009 NA NA NA NA NA NA 180 NA NA 32 NA NA NA NA 200 SLTR /5/2009 < < < <0.5 <0.25 < SLTR /5/2009 NA NA NA NA < NA NA 15 NA NA 36 NA NA NA NA 42 SLTR /8/2009 < < < < < SLTR /8/2009 < <0.5 <0.25 < SLTR 'D 9/8/ <0.5 <0.25 < ,000 Residential RSL , , , ,000 Industrial RSL ,000 2, , , ,100 20,000 5,100 5, , ,000 Residential ESL (A) Industrial ESL (A) , Residential ESL (B) Industrial ESL (B) , Natural Background Notes: All results, RSLs and ESLs are given in milligrams per kilogram (mg/kg) RSL = Screening level - Environmental Protection Agency (EPA) criteria ESL (A) = Environmental Screening Level - Regional Water Quality Control Board (RWQCB) criteria where groundwater is a potential potential source of drinking water ESL (B) = Environmental Screening Level - Regional Water Quality Control Board (RWQCB) criteria where groundwater is not a potential potential source of drinking water Natural Background = Lawrence Berkeley National Laboratory (LBNL) , Analysis of Background Distributions of Metals in the Soil at Lawrence Berkeley National Laboratory, dated June. Numbers shown are a range - minimum/maximum in mg/kg as reported in Table 3 of LBNL 2002 analysis. 1. Mercury number for RSL is for elemental mercury 2. Nickel number for RSL is for soluble salts which have the lowest RSLs 3. Thallium number for RSL is for soluble salts which have the lowest RSLs The notation -- may be used in the table If an RSL or ESL is not given 25 = Exceeds a residential RSL or ESL 2.5 = Exceeds both a residential and an industrial RSL or ESL ND = non-detect NA = Not analyzed OAK_Table 3 1 of 1 16 October 2009

20 FIGURES

21 SITE Base map: The Thomas Guide Alameda County /4 1/2 Mile Approximate scale 3229 SAN LEANDRO Oakland, California Treadwell&Rollo SITE LOCATION MAP Date 06/04/09 Project No Figure 1

22

23

24 APPENDIX A (On CD-ROM) Certified Analytical Results and Chain-of-Custody Records

25

26 Laboratory Job Number ANALYTICAL REPORT Treadwell & Rollo Project : th Street Location : 3229/3301 San Leandro Street Oakland, CA Level : II Sample ID Lab ID SLTR SLTR SLTR SLTR SLTR SLTR SLTR SLTR SLTR SLTR SLTR SLTR SLTR2-3-GW SLTR2-3T-GW This data package has been reviewed for technical correctness and completeness. Release of this data has been authorized by the Laboratory Manager or the Manager's designee, as verified by the following signatures. The results contained in this report meet all requirements of NELAC and pertain only to those samples which were submitted for analysis. This report may be reproduced only in its entirety. Signature: Date: 08/28/2009 Project Manager NELAP # 01107CA 1 of 108

27 CASE NARRATIVE Laboratory number: Client: Treadwell & Rollo Project: Location: 3229/3301 San Leandro Street Request Date: 08/06/09 Samples Received: 08/06/09 This data package contains sample and QC results for six soil samples and two water samples, requested for the above referenced project on 08/06/09. The samples were received cold and intact. TPH-Purgeables and/or BTXE by GC (EPA 8015B and EPA 8021B) Water: High responses were observed for toluene, ethylbenzene, and m,p-xylenes in the CCV analyzed 08/11/09 14:00; affected data was qualified with "b". No other analytical problems were encountered. TPH-Purgeables and/or BTXE by GC (EPA 8015B and EPA 8021B) Soil: No analytical problems were encountered. TPH-Extractables by GC (EPA 8015B) Water: No analytical problems were encountered. TPH-Extractables by GC (EPA 8015B) Soil: A number of samples were diluted due to the dark and viscous nature of the sample extracts. No other analytical problems were encountered. Volatile Organics by GC/MS (EPA 8260B) Water: No analytical problems were encountered. Volatile Organics by GC/MS (EPA 8260B) Soil: No analytical problems were encountered. Semivolatile Organics by GC/MS (EPA 8270C) Water: No analytical problems were encountered. Semivolatile Organics by GC/MS (EPA 8270C) Soil: SLTR (lab # ) and SLTR (lab # ) were diluted due to the dark and viscous nature of the sample extracts. No other analytical problems were encountered. Pesticides (EPA 8081B): All samples underwent sulfur cleanup using the copper option in EPA Method 3660B. All samples underwent florisil cleanup using EPA Method 3620C. Matrix spikes were not reported for this analysis because the parent sample required a dilution that would have diluted out the spikes. SLTR (lab # ) was diluted due to the color of the sample extract. No other analytical problems were encountered. Page 1 of of 108

28 CASE NARRATIVE Laboratory number: Client: Treadwell & Rollo Project: Location: 3229/3301 San Leandro Street Request Date: 08/06/09 Samples Received: 08/06/09 PCBs (EPA 8082): All samples underwent sulfuric acid cleanup using EPA Method 3665A. All samples underwent sulfur cleanup using the copper option in EPA Method 3660B. Low surrogate recovery was observed for decachlorobiphenyl in SLTR (lab # ); the corresponding TCMX surrogate recovery was within limits. No other analytical problems were encountered. Metals (EPA 6010B and EPA 7470A) Water: Low recoveries were observed for selenium in the MS/MSD for batch ; the parent sample was not a project sample, the BS/BSD were within limits, and the associated RPD was within limits. High recovery was observed for zinc in the MS for batch ; the BS/BSD were within limits. High RPD was also observed for zinc in the MS/MSD for batch ; the RPD was acceptable in the BS/BSD. No other analytical problems were encountered. Metals (EPA 6010B and EPA 7471A) Soil: Low recovery was observed for mercury in the MSD for batch ; the parent sample was not a project sample, the BS/BSD were within limits, and the associated RPD was within limits. Low recoveries were observed for many analytes in the MS/MSD for batch ; the parent sample was not a project sample, the BS/BSD were within limits, and the associated RPDs were within limits. High recovery was observed for copper in the MSD for batch ; the BS/BSD were within limits. High RPD was observed for silver and copper in the MS/MSD for batch ; the RPD was acceptable in the BS/BSD. No other analytical problems were encountered. Dioxins and Furans (EPA 8290): Maxxam Analytics in Cheektowaga, NY performed the analysis. Please see the Maxxam Analytics case narrative. Page 2 of of 108

29 4 of 108

30 5 of 108

31 Curtis & Tompkins Laboratories Analytical Report Lab #: Location: 3229/3301 San Leandro Street Client: Treadwell & Rollo Prep: EPA 5030B Project#: Field ID: SLTR2-3-GW Batch#: Matrix: Water Sampled: 08/05/09 Units: ug/l Received: 08/06/09 Diln Fac: Type: SAMPLE Analyzed: 08/12/09 Lab ID: Analyte Result RL Analysis Gasoline C7-C12 ND 50 EPA 8015B Benzene ND 0.50 EPA 8021B Toluene ND 0.50 EPA 8021B Ethylbenzene ND 0.50 EPA 8021B m,p-xylenes ND 0.50 EPA 8021B o-xylene ND 0.50 EPA 8021B Analysis Trifluorotoluene (FID) EPA 8015B Bromofluorobenzene (FID) EPA 8015B Trifluorotoluene (PID) EPA 8021B Bromofluorobenzene (PID) EPA 8021B Type: BLANK Analyzed: 08/11/09 Lab ID: QC Analyte Result RL Analysis Gasoline C7-C12 ND 50 EPA 8015B Benzene ND 0.50 EPA 8021B Toluene ND 0.50 EPA 8021B Ethylbenzene ND 0.50 EPA 8021B m,p-xylenes ND 0.50 EPA 8021B o-xylene ND 0.50 EPA 8021B Analysis Trifluorotoluene (FID) EPA 8015B Bromofluorobenzene (FID) EPA 8015B Trifluorotoluene (PID) EPA 8021B Bromofluorobenzene (PID) EPA 8021B ND= Not Detected RL= Reporting Limit Page 1 of of 108

32 Batch QC Report Curtis & Tompkins Laboratories Analytical Report Lab #: Location: 3229/3301 San Leandro Street Client: Treadwell & Rollo Prep: EPA 5030B Project#: Analysis: EPA 8021B Matrix: Water Batch#: Units: ug/l Analyzed: 08/11/09 Diln Fac: Type: BS Lab ID: QC Analyte Spiked Result Benzene Toluene b Ethylbenzene b m,p-xylenes b o-xylene Trifluorotoluene (PID) Bromofluorobenzene (PID) Type: BSD Lab ID: QC Analyte Spiked Result RPD Lim Benzene Toluene b Ethylbenzene b m,p-xylenes b o-xylene Trifluorotoluene (PID) Bromofluorobenzene (PID) b= See narrative RPD= Relative Percent Difference Page 1 of of 108

33 Batch QC Report Curtis & Tompkins Laboratories Analytical Report Lab #: Location: 3229/3301 San Leandro Street Client: Treadwell & Rollo Prep: EPA 5030B Project#: Analysis: EPA 8015B Type: LCS Diln Fac: Lab ID: QC Batch#: Matrix: Water Analyzed: 08/11/09 Units: ug/l Analyte Spiked Result Gasoline C7-C12 1, Trifluorotoluene (FID) Bromofluorobenzene (FID) Page 1 of of 108

34 Batch QC Report Curtis & Tompkins Laboratories Analytical Report Lab #: Location: 3229/3301 San Leandro Street Client: Treadwell & Rollo Prep: EPA 5030B Project#: Analysis: EPA 8015B Field ID: ZZZZZZZZZZ Batch#: MSS Lab ID: Sampled: 08/04/09 Matrix: Water Received: 08/05/09 Units: ug/l Analyzed: 08/11/09 Diln Fac: Type: MS Lab ID: QC Analyte MSS Result Spiked Result Gasoline C7-C ,000 1, Trifluorotoluene (FID) Bromofluorobenzene (FID) Type: MSD Lab ID: QC Analyte Spiked Result RPD Lim Gasoline C7-C12 2,000 1, Trifluorotoluene (FID) Bromofluorobenzene (FID) RPD= Relative Percent Difference Page 1 of of 108

35 Curtis & Tompkins Laboratories Analytical Report Lab #: Location: 3229/3301 San Leandro Street Client: Treadwell & Rollo Prep: EPA 5030B Project#: Matrix: Soil Sampled: 08/05/09 Basis: as received Received: 08/06/09 Diln Fac: Analyzed: 08/07/09 Batch#: Field ID: SLTR Lab ID: Type: SAMPLE Analyte Result RL Units Analysis Gasoline C7-C12 ND 1.1 mg/kg EPA 8015B MTBE ND 21 ug/kg EPA 8021B Benzene ND 5.3 ug/kg EPA 8021B Toluene ND 5.3 ug/kg EPA 8021B Ethylbenzene ND 5.3 ug/kg EPA 8021B m,p-xylenes ND 5.3 ug/kg EPA 8021B o-xylene ND 5.3 ug/kg EPA 8021B Analysis Trifluorotoluene (FID) EPA 8015B Bromofluorobenzene (FID) EPA 8015B Trifluorotoluene (PID) EPA 8021B Bromofluorobenzene (PID) EPA 8021B Field ID: SLTR Lab ID: Type: SAMPLE Analyte Result RL Units Analysis Gasoline C7-C12 ND 0.96 mg/kg EPA 8015B MTBE ND 19 ug/kg EPA 8021B Benzene ND 4.8 ug/kg EPA 8021B Toluene ND 4.8 ug/kg EPA 8021B Ethylbenzene ND 4.8 ug/kg EPA 8021B m,p-xylenes ND 4.8 ug/kg EPA 8021B o-xylene ND 4.8 ug/kg EPA 8021B Analysis Trifluorotoluene (FID) EPA 8015B Bromofluorobenzene (FID) EPA 8015B Trifluorotoluene (PID) EPA 8021B Bromofluorobenzene (PID) EPA 8021B ND= Not Detected RL= Reporting Limit Page 1 of of 108

36 Curtis & Tompkins Laboratories Analytical Report Lab #: Location: 3229/3301 San Leandro Street Client: Treadwell & Rollo Prep: EPA 5030B Project#: Matrix: Soil Sampled: 08/05/09 Basis: as received Received: 08/06/09 Diln Fac: Analyzed: 08/07/09 Batch#: Field ID: SLTR Lab ID: Type: SAMPLE Analyte Result RL Units Analysis Gasoline C7-C12 ND 0.95 mg/kg EPA 8015B MTBE ND 19 ug/kg EPA 8021B Benzene ND 4.8 ug/kg EPA 8021B Toluene ND 4.8 ug/kg EPA 8021B Ethylbenzene ND 4.8 ug/kg EPA 8021B m,p-xylenes ND 4.8 ug/kg EPA 8021B o-xylene ND 4.8 ug/kg EPA 8021B Analysis Trifluorotoluene (FID) EPA 8015B Bromofluorobenzene (FID) EPA 8015B Trifluorotoluene (PID) EPA 8021B Bromofluorobenzene (PID) EPA 8021B Field ID: SLTR Lab ID: Type: SAMPLE Analyte Result RL Units Analysis Gasoline C7-C12 ND 0.93 mg/kg EPA 8015B MTBE ND 19 ug/kg EPA 8021B Benzene ND 4.7 ug/kg EPA 8021B Toluene ND 4.7 ug/kg EPA 8021B Ethylbenzene ND 4.7 ug/kg EPA 8021B m,p-xylenes ND 4.7 ug/kg EPA 8021B o-xylene ND 4.7 ug/kg EPA 8021B Analysis Trifluorotoluene (FID) EPA 8015B Bromofluorobenzene (FID) EPA 8015B Trifluorotoluene (PID) EPA 8021B Bromofluorobenzene (PID) EPA 8021B ND= Not Detected RL= Reporting Limit Page 2 of of 108

37 Curtis & Tompkins Laboratories Analytical Report Lab #: Location: 3229/3301 San Leandro Street Client: Treadwell & Rollo Prep: EPA 5030B Project#: Matrix: Soil Sampled: 08/05/09 Basis: as received Received: 08/06/09 Diln Fac: Analyzed: 08/07/09 Batch#: Field ID: SLTR Lab ID: Type: SAMPLE Analyte Result RL Units Analysis Gasoline C7-C12 ND 1.1 mg/kg EPA 8015B MTBE ND 22 ug/kg EPA 8021B Benzene ND 5.5 ug/kg EPA 8021B Toluene ND 5.5 ug/kg EPA 8021B Ethylbenzene ND 5.5 ug/kg EPA 8021B m,p-xylenes ND 5.5 ug/kg EPA 8021B o-xylene ND 5.5 ug/kg EPA 8021B Analysis Trifluorotoluene (FID) EPA 8015B Bromofluorobenzene (FID) EPA 8015B Trifluorotoluene (PID) EPA 8021B Bromofluorobenzene (PID) EPA 8021B Field ID: SLTR Lab ID: Type: SAMPLE Analyte Result RL Units Analysis Gasoline C7-C12 ND 1.1 mg/kg EPA 8015B MTBE ND 21 ug/kg EPA 8021B Benzene ND 5.3 ug/kg EPA 8021B Toluene ND 5.3 ug/kg EPA 8021B Ethylbenzene ND 5.3 ug/kg EPA 8021B m,p-xylenes ND 5.3 ug/kg EPA 8021B o-xylene ND 5.3 ug/kg EPA 8021B Analysis Trifluorotoluene (FID) EPA 8015B Bromofluorobenzene (FID) EPA 8015B Trifluorotoluene (PID) EPA 8021B Bromofluorobenzene (PID) EPA 8021B ND= Not Detected RL= Reporting Limit Page 3 of of 108

38 Curtis & Tompkins Laboratories Analytical Report Lab #: Location: 3229/3301 San Leandro Street Client: Treadwell & Rollo Prep: EPA 5030B Project#: Matrix: Soil Sampled: 08/05/09 Basis: as received Received: 08/06/09 Diln Fac: Analyzed: 08/07/09 Batch#: Type: BLANK Lab ID: QC Analyte Result RL Units Analysis Gasoline C7-C12 ND 1.0 mg/kg EPA 8015B MTBE ND 20 ug/kg EPA 8021B Benzene ND 5.0 ug/kg EPA 8021B Toluene ND 5.0 ug/kg EPA 8021B Ethylbenzene ND 5.0 ug/kg EPA 8021B m,p-xylenes ND 5.0 ug/kg EPA 8021B o-xylene ND 5.0 ug/kg EPA 8021B Analysis Trifluorotoluene (FID) EPA 8015B Bromofluorobenzene (FID) EPA 8015B Trifluorotoluene (PID) EPA 8021B Bromofluorobenzene (PID) EPA 8021B ND= Not Detected RL= Reporting Limit Page 4 of of 108

39 Batch QC Report Curtis & Tompkins Laboratories Analytical Report Lab #: Location: 3229/3301 San Leandro Street Client: Treadwell & Rollo Prep: EPA 5030B Project#: Analysis: EPA 8021B Matrix: Soil Batch#: Units: ug/kg Analyzed: 08/07/09 Diln Fac: Type: BS Lab ID: QC Analyte Spiked Result MTBE Benzene Toluene Ethylbenzene m,p-xylenes o-xylene Trifluorotoluene (PID) Bromofluorobenzene (PID) Type: BSD Lab ID: QC Analyte Spiked Result RPD Lim MTBE Benzene Toluene Ethylbenzene m,p-xylenes o-xylene Trifluorotoluene (PID) Bromofluorobenzene (PID) RPD= Relative Percent Difference Page 1 of of 108

40 Batch QC Report Curtis & Tompkins Laboratories Analytical Report Lab #: Location: 3229/3301 San Leandro Street Client: Treadwell & Rollo Prep: EPA 5030B Project#: Analysis: EPA 8015B Type: LCS Diln Fac: Lab ID: QC Batch#: Matrix: Soil Analyzed: 08/07/09 Units: mg/kg Analyte Spiked Result Gasoline C7-C Trifluorotoluene (FID) Bromofluorobenzene (FID) Page 1 of of 108

41 Batch QC Report Curtis & Tompkins Laboratories Analytical Report Lab #: Location: 3229/3301 San Leandro Street Client: Treadwell & Rollo Prep: EPA 5030B Project#: Analysis: EPA 8015B Field ID: SLTR Diln Fac: MSS Lab ID: Batch#: Matrix: Soil Sampled: 08/05/09 Units: mg/kg Received: 08/06/09 Basis: as received Analyzed: 08/07/09 Type: MS Lab ID: QC Analyte MSS Result Spiked Result Gasoline C7-C Trifluorotoluene (FID) Bromofluorobenzene (FID) Type: MSD Lab ID: QC Analyte Spiked Result RPD Lim Gasoline C7-C Trifluorotoluene (FID) Bromofluorobenzene (FID) RPD= Relative Percent Difference Page 1 of of 108

42 Total Extractable Hydrocarbons Lab #: Location: 3229/3301 San Leandro Street Client: Treadwell & Rollo Prep: EPA 3520C Project#: Analysis: EPA 8015B Field ID: SLTR2-3-GW Sampled: 08/05/09 Matrix: Water Received: 08/06/09 Units: ug/l Prepared: 08/07/09 Diln Fac: Analyzed: 08/10/09 Batch#: Type: SAMPLE Cleanup Method: EPA 3630C Lab ID: Analyte Result RL Diesel C10-C24 ND 50 Motor Oil C24-C36 ND 300 o-terphenyl Type: BLANK Cleanup Method: EPA 3630C Lab ID: QC Analyte Result RL Diesel C10-C24 ND 50 Motor Oil C24-C36 ND 300 o-terphenyl ND= Not Detected RL= Reporting Limit Page 1 of of 108

43 Batch QC Report Total Extractable Hydrocarbons Lab #: Location: 3229/3301 San Leandro Street Client: Treadwell & Rollo Prep: EPA 3520C Project#: Analysis: EPA 8015B Type: LCS Diln Fac: Lab ID: QC Batch#: Matrix: Water Prepared: 08/07/09 Units: ug/l Analyzed: 08/10/09 Cleanup Method: EPA 3630C Analyte Spiked Result Diesel C10-C24 2,500 2, o-terphenyl Page 1 of of 108

44 Batch QC Report Total Extractable Hydrocarbons Lab #: Location: 3229/3301 San Leandro Street Client: Treadwell & Rollo Prep: EPA 3520C Project#: Analysis: EPA 8015B Field ID: ZZZZZZZZZZ Batch#: MSS Lab ID: Sampled: 08/06/09 Matrix: Water Received: 08/06/09 Units: ug/l Prepared: 08/07/09 Diln Fac: Analyzed: 08/10/09 Type: MS Cleanup Method: EPA 3630C Lab ID: QC Analyte MSS Result Spiked Result Diesel C10-C ,500 2, o-terphenyl Type: MSD Cleanup Method: EPA 3630C Lab ID: QC Analyte Spiked Result RPD Lim Diesel C10-C24 2,500 1, o-terphenyl RPD= Relative Percent Difference Page 1 of of 108

45 Total Extractable Hydrocarbons Lab #: Location: 3229/3301 San Leandro Street Client: Treadwell & Rollo Prep: SHAKER TABLE Project#: Analysis: EPA 8015B Matrix: Soil Sampled: 08/05/09 Units: mg/kg Received: 08/06/09 Basis: as received Prepared: 08/07/09 Batch#: Field ID: SLTR Diln Fac: Type: SAMPLE Analyzed: 08/10/09 Lab ID: Cleanup Method: EPA 3630C Analyte Result RL Diesel C10-C24 14 Y 0.99 Motor Oil C24-C o-terphenyl Field ID: SLTR Diln Fac: Type: SAMPLE Analyzed: 08/11/09 Lab ID: Cleanup Method: EPA 3630C Analyte Result RL Diesel C10-C Y 1.0 Motor Oil C24-C o-terphenyl Field ID: SLTR Diln Fac: Type: SAMPLE Analyzed: 08/11/09 Lab ID: Cleanup Method: EPA 3630C Analyte Result RL Diesel C10-C Y 99 Motor Oil C24-C36 2, o-terphenyl DO Field ID: SLTR Diln Fac: Type: SAMPLE Analyzed: 08/11/09 Lab ID: Cleanup Method: EPA 3630C Analyte Result RL Diesel C10-C24 64 Y 25 Motor Oil C24-C o-terphenyl DO Y= Sample exhibits chromatographic pattern which does not resemble standard DO= Diluted Out ND= Not Detected RL= Reporting Limit Page 1 of of 108

46 Total Extractable Hydrocarbons Lab #: Location: 3229/3301 San Leandro Street Client: Treadwell & Rollo Prep: SHAKER TABLE Project#: Analysis: EPA 8015B Matrix: Soil Sampled: 08/05/09 Units: mg/kg Received: 08/06/09 Basis: as received Prepared: 08/07/09 Batch#: Field ID: SLTR Diln Fac: Type: SAMPLE Analyzed: 08/11/09 Lab ID: Cleanup Method: EPA 3630C Analyte Result RL Diesel C10-C24 95 Y 20 Motor Oil C24-C o-terphenyl DO Field ID: SLTR Diln Fac: Type: SAMPLE Analyzed: 08/11/09 Lab ID: Cleanup Method: EPA 3630C Analyte Result RL Diesel C10-C Y 20 Motor Oil C24-C o-terphenyl DO Type: BLANK Analyzed: 08/09/09 Lab ID: QC Cleanup Method: EPA 3630C Diln Fac: Analyte Result RL Diesel C10-C24 ND 0.99 Motor Oil C24-C36 ND 5.0 o-terphenyl Y= Sample exhibits chromatographic pattern which does not resemble standard DO= Diluted Out ND= Not Detected RL= Reporting Limit Page 2 of of 108

47 Batch QC Report Total Extractable Hydrocarbons Lab #: Location: 3229/3301 San Leandro Street Client: Treadwell & Rollo Prep: SHAKER TABLE Project#: Analysis: EPA 8015B Type: LCS Diln Fac: Lab ID: QC Batch#: Matrix: Soil Prepared: 08/07/09 Units: mg/kg Analyzed: 08/09/09 Cleanup Method: EPA 3630C Analyte Spiked Result Diesel C10-C o-terphenyl Page 1 of of 108

48 Batch QC Report Total Extractable Hydrocarbons Lab #: Location: 3229/3301 San Leandro Street Client: Treadwell & Rollo Prep: SHAKER TABLE Project#: Analysis: EPA 8015B Field ID: ZZZZZZZZZZ Batch#: MSS Lab ID: Sampled: 08/04/09 Matrix: Soil Received: 08/04/09 Units: mg/kg Prepared: 08/07/09 Basis: as received Analyzed: 08/10/09 Diln Fac: Type: MS Lab ID: QC Analyte MSS Result Spiked Result Diesel C10-C o-terphenyl Type: MSD Lab ID: QC Analyte Spiked Result RPD Lim Diesel C10-C o-terphenyl RPD= Relative Percent Difference Page 1 of of 108

49 Minutes \\Lims\gdrive\ezchrom\Projects\GC15B\Data\222b023, B 24 of 108

50 Minutes \\Lims\gdrive\ezchrom\Projects\GC15B\Data\222b028, B 25 of 108

51 Minutes \\Lims\gdrive\ezchrom\Projects\GC15B\Data\222b024, B 26 of 108

52 Minutes \\Lims\gdrive\ezchrom\Projects\GC15B\Data\222b025, B 27 of 108

53 Minutes \\Lims\gdrive\ezchrom\Projects\GC15B\Data\222b026, B 28 of 108

54 Minutes \\Lims\gdrive\ezchrom\Projects\GC15B\Data\222b027, B 29 of 108

55 Minutes \\Lims\gdrive\ezchrom\Projects\GC15B\Data\222b019, B 30 of 108

56 Minutes \\Lims\gdrive\ezchrom\Projects\GC15B\Data\222b020, B 31 of 108

57 Purgeable Organics by GC/MS Lab #: Location: 3229/3301 San Leandro Street Client: Treadwell & Rollo Prep: EPA 5030B Project#: Analysis: EPA 8260B Field ID: SLTR2-3-GW Batch#: Lab ID: Sampled: 08/05/09 Matrix: Water Received: 08/06/09 Units: ug/l Analyzed: 08/10/09 Diln Fac: Analyte Result RL Freon 12 ND 1.0 Chloromethane ND 1.0 Vinyl Chloride ND 0.5 Bromomethane ND 1.0 Chloroethane ND 1.0 Trichlorofluoromethane ND 1.0 Acetone ND 10 Freon 113 ND 5.0 1,1-Dichloroethene ND 0.5 Methylene Chloride ND 10 Carbon Disulfide ND 0.5 MTBE ND 0.5 trans-1,2-dichloroethene ND 0.5 Vinyl Acetate ND 10 1,1-Dichloroethane ND Butanone ND 10 cis-1,2-dichloroethene ND 0.5 2,2-Dichloropropane ND 0.5 Chloroform ND 0.5 Bromochloromethane ND 0.5 1,1,1-Trichloroethane ND 0.5 1,1-Dichloropropene ND 0.5 Carbon Tetrachloride ND 0.5 1,2-Dichloroethane ND 0.5 Benzene ND 0.5 Trichloroethene ,2-Dichloropropane ND 0.5 Bromodichloromethane ND 0.5 Dibromomethane ND Methyl-2-Pentanone ND 10 cis-1,3-dichloropropene ND 0.5 Toluene ND 0.5 trans-1,3-dichloropropene ND 0.5 1,1,2-Trichloroethane ND Hexanone ND 10 1,3-Dichloropropane ND 0.5 Tetrachloroethene ND= Not Detected RL= Reporting Limit Page 1 of of 108

58 Purgeable Organics by GC/MS Lab #: Location: 3229/3301 San Leandro Street Client: Treadwell & Rollo Prep: EPA 5030B Project#: Analysis: EPA 8260B Field ID: SLTR2-3-GW Batch#: Lab ID: Sampled: 08/05/09 Matrix: Water Received: 08/06/09 Units: ug/l Analyzed: 08/10/09 Diln Fac: Analyte Result RL Dibromochloromethane ND 0.5 1,2-Dibromoethane ND 0.5 Chlorobenzene ND 0.5 1,1,1,2-Tetrachloroethane ND 0.5 Ethylbenzene ND 0.5 m,p-xylenes ND 0.5 o-xylene ND 0.5 Styrene ND 0.5 Bromoform ND 1.0 Isopropylbenzene ND 0.5 1,1,2,2-Tetrachloroethane ND 0.5 1,2,3-Trichloropropane ND 0.5 Propylbenzene ND 0.5 Bromobenzene ND 0.5 1,3,5-Trimethylbenzene ND Chlorotoluene ND Chlorotoluene ND 0.5 tert-butylbenzene ND 0.5 1,2,4-Trimethylbenzene ND 0.5 sec-butylbenzene ND 0.5 para-isopropyl Toluene ND 0.5 1,3-Dichlorobenzene ND 0.5 1,4-Dichlorobenzene ND 0.5 n-butylbenzene ND 0.5 1,2-Dichlorobenzene ND 0.5 1,2-Dibromo-3-Chloropropane ND 0.5 1,2,4-Trichlorobenzene ND 0.5 Hexachlorobutadiene ND 0.5 Naphthalene ND 0.5 1,2,3-Trichlorobenzene ND 0.5 Dibromofluoromethane ,2-Dichloroethane-d Toluene-d Bromofluorobenzene ND= Not Detected RL= Reporting Limit Page 2 of of 108

59 Purgeable Organics by GC/MS Lab #: Location: 3229/3301 San Leandro Street Client: Treadwell & Rollo Prep: EPA 5030B Project#: Analysis: EPA 8260B Field ID: SLTR2-3T-GW Batch#: Lab ID: Sampled: 08/05/09 Matrix: Water Received: 08/06/09 Units: ug/l Analyzed: 08/10/09 Diln Fac: Analyte Result RL Freon 12 ND 1.0 Chloromethane ND 1.0 Vinyl Chloride ND 0.5 Bromomethane ND 1.0 Chloroethane ND 1.0 Trichlorofluoromethane ND 1.0 Acetone ND 10 Freon 113 ND 5.0 1,1-Dichloroethene ND 0.5 Methylene Chloride ND 10 Carbon Disulfide ND 0.5 MTBE ND 0.5 trans-1,2-dichloroethene ND 0.5 Vinyl Acetate ND 10 1,1-Dichloroethane ND Butanone ND 10 cis-1,2-dichloroethene ND 0.5 2,2-Dichloropropane ND 0.5 Chloroform ND 0.5 Bromochloromethane ND 0.5 1,1,1-Trichloroethane ND 0.5 1,1-Dichloropropene ND 0.5 Carbon Tetrachloride ND 0.5 1,2-Dichloroethane ND 0.5 Benzene ND 0.5 Trichloroethene ND 0.5 1,2-Dichloropropane ND 0.5 Bromodichloromethane ND 0.5 Dibromomethane ND Methyl-2-Pentanone ND 10 cis-1,3-dichloropropene ND 0.5 Toluene ND 0.5 trans-1,3-dichloropropene ND 0.5 1,1,2-Trichloroethane ND Hexanone ND 10 1,3-Dichloropropane ND 0.5 Tetrachloroethene ND 0.5 ND= Not Detected RL= Reporting Limit Page 1 of of 108

60 Purgeable Organics by GC/MS Lab #: Location: 3229/3301 San Leandro Street Client: Treadwell & Rollo Prep: EPA 5030B Project#: Analysis: EPA 8260B Field ID: SLTR2-3T-GW Batch#: Lab ID: Sampled: 08/05/09 Matrix: Water Received: 08/06/09 Units: ug/l Analyzed: 08/10/09 Diln Fac: Analyte Result RL Dibromochloromethane ND 0.5 1,2-Dibromoethane ND 0.5 Chlorobenzene ND 0.5 1,1,1,2-Tetrachloroethane ND 0.5 Ethylbenzene ND 0.5 m,p-xylenes ND 0.5 o-xylene ND 0.5 Styrene ND 0.5 Bromoform ND 1.0 Isopropylbenzene ND 0.5 1,1,2,2-Tetrachloroethane ND 0.5 1,2,3-Trichloropropane ND 0.5 Propylbenzene ND 0.5 Bromobenzene ND 0.5 1,3,5-Trimethylbenzene ND Chlorotoluene ND Chlorotoluene ND 0.5 tert-butylbenzene ND 0.5 1,2,4-Trimethylbenzene ND 0.5 sec-butylbenzene ND 0.5 para-isopropyl Toluene ND 0.5 1,3-Dichlorobenzene ND 0.5 1,4-Dichlorobenzene ND 0.5 n-butylbenzene ND 0.5 1,2-Dichlorobenzene ND 0.5 1,2-Dibromo-3-Chloropropane ND 0.5 1,2,4-Trichlorobenzene ND 0.5 Hexachlorobutadiene ND 0.5 Naphthalene ND 0.5 1,2,3-Trichlorobenzene ND 0.5 Dibromofluoromethane ,2-Dichloroethane-d Toluene-d Bromofluorobenzene ND= Not Detected RL= Reporting Limit Page 2 of of 108

61 Batch QC Report Purgeable Organics by GC/MS Lab #: Location: 3229/3301 San Leandro Street Client: Treadwell & Rollo Prep: EPA 5030B Project#: Analysis: EPA 8260B Matrix: Water Batch#: Units: ug/l Analyzed: 08/10/09 Diln Fac: Type: BS Lab ID: QC Analyte Spiked Result 1,1-Dichloroethene Benzene Trichloroethene Toluene Chlorobenzene Dibromofluoromethane ,2-Dichloroethane-d Toluene-d Bromofluorobenzene Type: BSD Lab ID: QC Analyte Spiked Result RPD Lim 1,1-Dichloroethene Benzene Trichloroethene Toluene Chlorobenzene Dibromofluoromethane ,2-Dichloroethane-d Toluene-d Bromofluorobenzene RPD= Relative Percent Difference Page 1 of of 108

62 Batch QC Report Purgeable Organics by GC/MS Lab #: Location: 3229/3301 San Leandro Street Client: Treadwell & Rollo Prep: EPA 5030B Project#: Analysis: EPA 8260B Type: BLANK Diln Fac: Lab ID: QC Batch#: Matrix: Water Analyzed: 08/10/09 Units: ug/l Analyte Result RL Freon 12 ND 1.0 Chloromethane ND 1.0 Vinyl Chloride ND 0.5 Bromomethane ND 1.0 Chloroethane ND 1.0 Trichlorofluoromethane ND 1.0 Acetone ND 10 Freon 113 ND 5.0 1,1-Dichloroethene ND 0.5 Methylene Chloride ND 10 Carbon Disulfide ND 0.5 MTBE ND 0.5 trans-1,2-dichloroethene ND 0.5 Vinyl Acetate ND 10 1,1-Dichloroethane ND Butanone ND 10 cis-1,2-dichloroethene ND 0.5 2,2-Dichloropropane ND 0.5 Chloroform ND 0.5 Bromochloromethane ND 0.5 1,1,1-Trichloroethane ND 0.5 1,1-Dichloropropene ND 0.5 Carbon Tetrachloride ND 0.5 1,2-Dichloroethane ND 0.5 Benzene ND 0.5 Trichloroethene ND 0.5 1,2-Dichloropropane ND 0.5 Bromodichloromethane ND 0.5 Dibromomethane ND Methyl-2-Pentanone ND 10 cis-1,3-dichloropropene ND 0.5 Toluene ND 0.5 trans-1,3-dichloropropene ND 0.5 1,1,2-Trichloroethane ND Hexanone ND 10 1,3-Dichloropropane ND 0.5 Tetrachloroethene ND 0.5 ND= Not Detected RL= Reporting Limit Page 1 of of 108

63 Batch QC Report Purgeable Organics by GC/MS Lab #: Location: 3229/3301 San Leandro Street Client: Treadwell & Rollo Prep: EPA 5030B Project#: Analysis: EPA 8260B Type: BLANK Diln Fac: Lab ID: QC Batch#: Matrix: Water Analyzed: 08/10/09 Units: ug/l Analyte Result RL Dibromochloromethane ND 0.5 1,2-Dibromoethane ND 0.5 Chlorobenzene ND 0.5 1,1,1,2-Tetrachloroethane ND 0.5 Ethylbenzene ND 0.5 m,p-xylenes ND 0.5 o-xylene ND 0.5 Styrene ND 0.5 Bromoform ND 1.0 Isopropylbenzene ND 0.5 1,1,2,2-Tetrachloroethane ND 0.5 1,2,3-Trichloropropane ND 0.5 Propylbenzene ND 0.5 Bromobenzene ND 0.5 1,3,5-Trimethylbenzene ND Chlorotoluene ND Chlorotoluene ND 0.5 tert-butylbenzene ND 0.5 1,2,4-Trimethylbenzene ND 0.5 sec-butylbenzene ND 0.5 para-isopropyl Toluene ND 0.5 1,3-Dichlorobenzene ND 0.5 1,4-Dichlorobenzene ND 0.5 n-butylbenzene ND 0.5 1,2-Dichlorobenzene ND 0.5 1,2-Dibromo-3-Chloropropane ND 0.5 1,2,4-Trichlorobenzene ND 0.5 Hexachlorobutadiene ND 0.5 Naphthalene ND 0.5 1,2,3-Trichlorobenzene ND 0.5 Dibromofluoromethane ,2-Dichloroethane-d Toluene-d Bromofluorobenzene ND= Not Detected RL= Reporting Limit Page 2 of of 108

64 Purgeable Organics by GC/MS Lab #: Location: 3229/3301 San Leandro Street Client: Treadwell & Rollo Prep: EPA 5030B Project#: Analysis: EPA 8260B Field ID: SLTR Diln Fac: Lab ID: Batch#: Matrix: Soil Sampled: 08/05/09 Units: ug/kg Received: 08/06/09 Basis: as received Analyzed: 08/07/09 Analyte Result RL Freon 12 ND 9.9 Chloromethane ND 9.9 Vinyl Chloride ND 9.9 Bromomethane ND 9.9 Chloroethane ND 9.9 Trichlorofluoromethane ND 5.0 Acetone ND 20 Freon 113 ND 5.0 1,1-Dichloroethene ND 5.0 Methylene Chloride ND 20 Carbon Disulfide ND 5.0 MTBE ND 5.0 trans-1,2-dichloroethene ND 5.0 Vinyl Acetate ND 50 1,1-Dichloroethane ND Butanone ND 9.9 cis-1,2-dichloroethene ND 5.0 2,2-Dichloropropane ND 5.0 Chloroform ND 5.0 Bromochloromethane ND 5.0 1,1,1-Trichloroethane ND 5.0 1,1-Dichloropropene ND 5.0 Carbon Tetrachloride ND 5.0 1,2-Dichloroethane ND 5.0 Benzene ND 5.0 Trichloroethene ND 5.0 1,2-Dichloropropane ND 5.0 Bromodichloromethane ND 5.0 Dibromomethane ND Methyl-2-Pentanone ND 9.9 cis-1,3-dichloropropene ND 5.0 Toluene ND 5.0 trans-1,3-dichloropropene ND 5.0 1,1,2-Trichloroethane ND Hexanone ND 9.9 1,3-Dichloropropane ND 5.0 Tetrachloroethene ND 5.0 ND= Not Detected RL= Reporting Limit Page 1 of of 108

65 Purgeable Organics by GC/MS Lab #: Location: 3229/3301 San Leandro Street Client: Treadwell & Rollo Prep: EPA 5030B Project#: Analysis: EPA 8260B Field ID: SLTR Diln Fac: Lab ID: Batch#: Matrix: Soil Sampled: 08/05/09 Units: ug/kg Received: 08/06/09 Basis: as received Analyzed: 08/07/09 Analyte Result RL Dibromochloromethane ND 5.0 1,2-Dibromoethane ND 5.0 Chlorobenzene ND 5.0 1,1,1,2-Tetrachloroethane ND 5.0 Ethylbenzene ND 5.0 m,p-xylenes ND 5.0 o-xylene ND 5.0 Styrene ND 5.0 Bromoform ND 5.0 Isopropylbenzene ND 5.0 1,1,2,2-Tetrachloroethane ND 5.0 1,2,3-Trichloropropane ND 5.0 Propylbenzene ND 5.0 Bromobenzene ND 5.0 1,3,5-Trimethylbenzene ND Chlorotoluene ND Chlorotoluene ND 5.0 tert-butylbenzene ND 5.0 1,2,4-Trimethylbenzene ND 5.0 sec-butylbenzene ND 5.0 para-isopropyl Toluene ND 5.0 1,3-Dichlorobenzene ND 5.0 1,4-Dichlorobenzene ND 5.0 n-butylbenzene ND 5.0 1,2-Dichlorobenzene ND 5.0 1,2-Dibromo-3-Chloropropane ND 5.0 1,2,4-Trichlorobenzene ND 5.0 Hexachlorobutadiene ND 5.0 Naphthalene ND 5.0 1,2,3-Trichlorobenzene ND 5.0 Dibromofluoromethane ,2-Dichloroethane-d Toluene-d Bromofluorobenzene ND= Not Detected RL= Reporting Limit Page 2 of of 108

66 Purgeable Organics by GC/MS Lab #: Location: 3229/3301 San Leandro Street Client: Treadwell & Rollo Prep: EPA 5030B Project#: Analysis: EPA 8260B Field ID: SLTR Diln Fac: Lab ID: Batch#: Matrix: Soil Sampled: 08/05/09 Units: ug/kg Received: 08/06/09 Basis: as received Analyzed: 08/07/09 Analyte Result RL Freon 12 ND 9.2 Chloromethane ND 9.2 Vinyl Chloride ND 9.2 Bromomethane ND 9.2 Chloroethane ND 9.2 Trichlorofluoromethane ND 4.6 Acetone ND 18 Freon 113 ND 4.6 1,1-Dichloroethene ND 4.6 Methylene Chloride ND 18 Carbon Disulfide ND 4.6 MTBE ND 4.6 trans-1,2-dichloroethene ND 4.6 Vinyl Acetate ND 46 1,1-Dichloroethane ND Butanone ND 9.2 cis-1,2-dichloroethene ND 4.6 2,2-Dichloropropane ND 4.6 Chloroform ND 4.6 Bromochloromethane ND 4.6 1,1,1-Trichloroethane ND 4.6 1,1-Dichloropropene ND 4.6 Carbon Tetrachloride ND 4.6 1,2-Dichloroethane ND 4.6 Benzene ND 4.6 Trichloroethene ND 4.6 1,2-Dichloropropane ND 4.6 Bromodichloromethane ND 4.6 Dibromomethane ND Methyl-2-Pentanone ND 9.2 cis-1,3-dichloropropene ND 4.6 Toluene ND 4.6 trans-1,3-dichloropropene ND 4.6 1,1,2-Trichloroethane ND Hexanone ND 9.2 1,3-Dichloropropane ND 4.6 Tetrachloroethene ND 4.6 ND= Not Detected RL= Reporting Limit Page 1 of of 108

67 Purgeable Organics by GC/MS Lab #: Location: 3229/3301 San Leandro Street Client: Treadwell & Rollo Prep: EPA 5030B Project#: Analysis: EPA 8260B Field ID: SLTR Diln Fac: Lab ID: Batch#: Matrix: Soil Sampled: 08/05/09 Units: ug/kg Received: 08/06/09 Basis: as received Analyzed: 08/07/09 Analyte Result RL Dibromochloromethane ND 4.6 1,2-Dibromoethane ND 4.6 Chlorobenzene ND 4.6 1,1,1,2-Tetrachloroethane ND 4.6 Ethylbenzene ND 4.6 m,p-xylenes ND 4.6 o-xylene ND 4.6 Styrene ND 4.6 Bromoform ND 4.6 Isopropylbenzene ND 4.6 1,1,2,2-Tetrachloroethane ND 4.6 1,2,3-Trichloropropane ND 4.6 Propylbenzene ND 4.6 Bromobenzene ND 4.6 1,3,5-Trimethylbenzene ND Chlorotoluene ND Chlorotoluene ND 4.6 tert-butylbenzene ND 4.6 1,2,4-Trimethylbenzene ND 4.6 sec-butylbenzene ND 4.6 para-isopropyl Toluene ND 4.6 1,3-Dichlorobenzene ND 4.6 1,4-Dichlorobenzene ND 4.6 n-butylbenzene ND 4.6 1,2-Dichlorobenzene ND 4.6 1,2-Dibromo-3-Chloropropane ND 4.6 1,2,4-Trichlorobenzene ND 4.6 Hexachlorobutadiene ND 4.6 Naphthalene ND 4.6 1,2,3-Trichlorobenzene ND 4.6 Dibromofluoromethane ,2-Dichloroethane-d Toluene-d Bromofluorobenzene ND= Not Detected RL= Reporting Limit Page 2 of of 108

68 Purgeable Organics by GC/MS Lab #: Location: 3229/3301 San Leandro Street Client: Treadwell & Rollo Prep: EPA 5030B Project#: Analysis: EPA 8260B Field ID: SLTR Diln Fac: Lab ID: Batch#: Matrix: Soil Sampled: 08/05/09 Units: ug/kg Received: 08/06/09 Basis: as received Analyzed: 08/07/09 Analyte Result RL Freon 12 ND 9.3 Chloromethane ND 9.3 Vinyl Chloride ND 9.3 Bromomethane ND 9.3 Chloroethane ND 9.3 Trichlorofluoromethane ND 4.7 Acetone ND 19 Freon 113 ND 4.7 1,1-Dichloroethene ND 4.7 Methylene Chloride ND 19 Carbon Disulfide ND 4.7 MTBE ND 4.7 trans-1,2-dichloroethene ND 4.7 Vinyl Acetate ND 47 1,1-Dichloroethane ND Butanone ND 9.3 cis-1,2-dichloroethene ND 4.7 2,2-Dichloropropane ND 4.7 Chloroform ND 4.7 Bromochloromethane ND 4.7 1,1,1-Trichloroethane ND 4.7 1,1-Dichloropropene ND 4.7 Carbon Tetrachloride ND 4.7 1,2-Dichloroethane ND 4.7 Benzene ND 4.7 Trichloroethene ND 4.7 1,2-Dichloropropane ND 4.7 Bromodichloromethane ND 4.7 Dibromomethane ND Methyl-2-Pentanone ND 9.3 cis-1,3-dichloropropene ND 4.7 Toluene ND 4.7 trans-1,3-dichloropropene ND 4.7 1,1,2-Trichloroethane ND Hexanone ND 9.3 1,3-Dichloropropane ND 4.7 Tetrachloroethene ND= Not Detected RL= Reporting Limit Page 1 of of 108

69 Purgeable Organics by GC/MS Lab #: Location: 3229/3301 San Leandro Street Client: Treadwell & Rollo Prep: EPA 5030B Project#: Analysis: EPA 8260B Field ID: SLTR Diln Fac: Lab ID: Batch#: Matrix: Soil Sampled: 08/05/09 Units: ug/kg Received: 08/06/09 Basis: as received Analyzed: 08/07/09 Analyte Result RL Dibromochloromethane ND 4.7 1,2-Dibromoethane ND 4.7 Chlorobenzene ND 4.7 1,1,1,2-Tetrachloroethane ND 4.7 Ethylbenzene ND 4.7 m,p-xylenes ND 4.7 o-xylene ND 4.7 Styrene ND 4.7 Bromoform ND 4.7 Isopropylbenzene ND 4.7 1,1,2,2-Tetrachloroethane ND 4.7 1,2,3-Trichloropropane ND 4.7 Propylbenzene ND 4.7 Bromobenzene ND 4.7 1,3,5-Trimethylbenzene ND Chlorotoluene ND Chlorotoluene ND 4.7 tert-butylbenzene ND 4.7 1,2,4-Trimethylbenzene ND 4.7 sec-butylbenzene ND 4.7 para-isopropyl Toluene ND 4.7 1,3-Dichlorobenzene ND 4.7 1,4-Dichlorobenzene ND 4.7 n-butylbenzene ND 4.7 1,2-Dichlorobenzene ND 4.7 1,2-Dibromo-3-Chloropropane ND 4.7 1,2,4-Trichlorobenzene ND 4.7 Hexachlorobutadiene ND 4.7 Naphthalene ND 4.7 1,2,3-Trichlorobenzene ND 4.7 Dibromofluoromethane ,2-Dichloroethane-d Toluene-d Bromofluorobenzene ND= Not Detected RL= Reporting Limit Page 2 of of 108

70 Purgeable Organics by GC/MS Lab #: Location: 3229/3301 San Leandro Street Client: Treadwell & Rollo Prep: EPA 5030B Project#: Analysis: EPA 8260B Field ID: SLTR Diln Fac: Lab ID: Batch#: Matrix: Soil Sampled: 08/05/09 Units: ug/kg Received: 08/06/09 Basis: as received Analyzed: 08/07/09 Analyte Result RL Freon 12 ND 9.6 Chloromethane ND 9.6 Vinyl Chloride ND 9.6 Bromomethane ND 9.6 Chloroethane ND 9.6 Trichlorofluoromethane ND 4.8 Acetone ND 19 Freon 113 ND 4.8 1,1-Dichloroethene ND 4.8 Methylene Chloride ND 19 Carbon Disulfide ND 4.8 MTBE ND 4.8 trans-1,2-dichloroethene ND 4.8 Vinyl Acetate ND 48 1,1-Dichloroethane ND Butanone ND 9.6 cis-1,2-dichloroethene ND 4.8 2,2-Dichloropropane ND 4.8 Chloroform ND 4.8 Bromochloromethane ND 4.8 1,1,1-Trichloroethane ND 4.8 1,1-Dichloropropene ND 4.8 Carbon Tetrachloride ND 4.8 1,2-Dichloroethane ND 4.8 Benzene ND 4.8 Trichloroethene ND 4.8 1,2-Dichloropropane ND 4.8 Bromodichloromethane ND 4.8 Dibromomethane ND Methyl-2-Pentanone ND 9.6 cis-1,3-dichloropropene ND 4.8 Toluene ND 4.8 trans-1,3-dichloropropene ND 4.8 1,1,2-Trichloroethane ND Hexanone ND 9.6 1,3-Dichloropropane ND 4.8 Tetrachloroethene ND 4.8 ND= Not Detected RL= Reporting Limit Page 1 of of 108

71 Purgeable Organics by GC/MS Lab #: Location: 3229/3301 San Leandro Street Client: Treadwell & Rollo Prep: EPA 5030B Project#: Analysis: EPA 8260B Field ID: SLTR Diln Fac: Lab ID: Batch#: Matrix: Soil Sampled: 08/05/09 Units: ug/kg Received: 08/06/09 Basis: as received Analyzed: 08/07/09 Analyte Result RL Dibromochloromethane ND 4.8 1,2-Dibromoethane ND 4.8 Chlorobenzene ND 4.8 1,1,1,2-Tetrachloroethane ND 4.8 Ethylbenzene ND 4.8 m,p-xylenes ND 4.8 o-xylene ND 4.8 Styrene ND 4.8 Bromoform ND 4.8 Isopropylbenzene ND 4.8 1,1,2,2-Tetrachloroethane ND 4.8 1,2,3-Trichloropropane ND 4.8 Propylbenzene ND 4.8 Bromobenzene ND 4.8 1,3,5-Trimethylbenzene ND Chlorotoluene ND Chlorotoluene ND 4.8 tert-butylbenzene ND 4.8 1,2,4-Trimethylbenzene ND 4.8 sec-butylbenzene ND 4.8 para-isopropyl Toluene ND 4.8 1,3-Dichlorobenzene ND 4.8 1,4-Dichlorobenzene ND 4.8 n-butylbenzene ND 4.8 1,2-Dichlorobenzene ND 4.8 1,2-Dibromo-3-Chloropropane ND 4.8 1,2,4-Trichlorobenzene ND 4.8 Hexachlorobutadiene ND 4.8 Naphthalene ND 4.8 1,2,3-Trichlorobenzene ND 4.8 Dibromofluoromethane ,2-Dichloroethane-d Toluene-d Bromofluorobenzene ND= Not Detected RL= Reporting Limit Page 2 of of 108

72 Purgeable Organics by GC/MS Lab #: Location: 3229/3301 San Leandro Street Client: Treadwell & Rollo Prep: EPA 5030B Project#: Analysis: EPA 8260B Field ID: SLTR Diln Fac: Lab ID: Batch#: Matrix: Soil Sampled: 08/05/09 Units: ug/kg Received: 08/06/09 Basis: as received Analyzed: 08/07/09 Analyte Result RL Freon 12 ND 9.3 Chloromethane ND 9.3 Vinyl Chloride ND 9.3 Bromomethane ND 9.3 Chloroethane ND 9.3 Trichlorofluoromethane ND 4.6 Acetone ND 19 Freon 113 ND 4.6 1,1-Dichloroethene ND 4.6 Methylene Chloride ND 19 Carbon Disulfide ND 4.6 MTBE ND 4.6 trans-1,2-dichloroethene ND 4.6 Vinyl Acetate ND 46 1,1-Dichloroethane ND Butanone ND 9.3 cis-1,2-dichloroethene ND 4.6 2,2-Dichloropropane ND 4.6 Chloroform ND 4.6 Bromochloromethane ND 4.6 1,1,1-Trichloroethane ND 4.6 1,1-Dichloropropene ND 4.6 Carbon Tetrachloride ND 4.6 1,2-Dichloroethane ND 4.6 Benzene ND 4.6 Trichloroethene ND 4.6 1,2-Dichloropropane ND 4.6 Bromodichloromethane ND 4.6 Dibromomethane ND Methyl-2-Pentanone ND 9.3 cis-1,3-dichloropropene ND 4.6 Toluene ND 4.6 trans-1,3-dichloropropene ND 4.6 1,1,2-Trichloroethane ND Hexanone ND 9.3 1,3-Dichloropropane ND 4.6 Tetrachloroethene ND 4.6 ND= Not Detected RL= Reporting Limit Page 1 of of 108

73 Purgeable Organics by GC/MS Lab #: Location: 3229/3301 San Leandro Street Client: Treadwell & Rollo Prep: EPA 5030B Project#: Analysis: EPA 8260B Field ID: SLTR Diln Fac: Lab ID: Batch#: Matrix: Soil Sampled: 08/05/09 Units: ug/kg Received: 08/06/09 Basis: as received Analyzed: 08/07/09 Analyte Result RL Dibromochloromethane ND 4.6 1,2-Dibromoethane ND 4.6 Chlorobenzene ND 4.6 1,1,1,2-Tetrachloroethane ND 4.6 Ethylbenzene ND 4.6 m,p-xylenes ND 4.6 o-xylene ND 4.6 Styrene ND 4.6 Bromoform ND 4.6 Isopropylbenzene ND 4.6 1,1,2,2-Tetrachloroethane ND 4.6 1,2,3-Trichloropropane ND 4.6 Propylbenzene ND 4.6 Bromobenzene ND 4.6 1,3,5-Trimethylbenzene ND Chlorotoluene ND Chlorotoluene ND 4.6 tert-butylbenzene ND 4.6 1,2,4-Trimethylbenzene ND 4.6 sec-butylbenzene ND 4.6 para-isopropyl Toluene ND 4.6 1,3-Dichlorobenzene ND 4.6 1,4-Dichlorobenzene ND 4.6 n-butylbenzene ND 4.6 1,2-Dichlorobenzene ND 4.6 1,2-Dibromo-3-Chloropropane ND 4.6 1,2,4-Trichlorobenzene ND 4.6 Hexachlorobutadiene ND 4.6 Naphthalene ND 4.6 1,2,3-Trichlorobenzene ND 4.6 Dibromofluoromethane ,2-Dichloroethane-d Toluene-d Bromofluorobenzene ND= Not Detected RL= Reporting Limit Page 2 of of 108

74 Purgeable Organics by GC/MS Lab #: Location: 3229/3301 San Leandro Street Client: Treadwell & Rollo Prep: EPA 5030B Project#: Analysis: EPA 8260B Field ID: SLTR Diln Fac: Lab ID: Batch#: Matrix: Soil Sampled: 08/05/09 Units: ug/kg Received: 08/06/09 Basis: as received Analyzed: 08/08/09 Analyte Result RL Freon 12 ND 9.7 Chloromethane ND 9.7 Vinyl Chloride ND 9.7 Bromomethane ND 9.7 Chloroethane ND 9.7 Trichlorofluoromethane ND 4.8 Acetone ND 19 Freon 113 ND 4.8 1,1-Dichloroethene ND 4.8 Methylene Chloride ND 19 Carbon Disulfide ND 4.8 MTBE ND 4.8 trans-1,2-dichloroethene ND 4.8 Vinyl Acetate ND 48 1,1-Dichloroethane ND Butanone ND 9.7 cis-1,2-dichloroethene ND 4.8 2,2-Dichloropropane ND 4.8 Chloroform ND 4.8 Bromochloromethane ND 4.8 1,1,1-Trichloroethane ND 4.8 1,1-Dichloropropene ND 4.8 Carbon Tetrachloride ND 4.8 1,2-Dichloroethane ND 4.8 Benzene ND 4.8 Trichloroethene ND 4.8 1,2-Dichloropropane ND 4.8 Bromodichloromethane ND 4.8 Dibromomethane ND Methyl-2-Pentanone ND 9.7 cis-1,3-dichloropropene ND 4.8 Toluene ND 4.8 trans-1,3-dichloropropene ND 4.8 1,1,2-Trichloroethane ND Hexanone ND 9.7 1,3-Dichloropropane ND 4.8 Tetrachloroethene ND 4.8 ND= Not Detected RL= Reporting Limit Page 1 of of 108

75 Purgeable Organics by GC/MS Lab #: Location: 3229/3301 San Leandro Street Client: Treadwell & Rollo Prep: EPA 5030B Project#: Analysis: EPA 8260B Field ID: SLTR Diln Fac: Lab ID: Batch#: Matrix: Soil Sampled: 08/05/09 Units: ug/kg Received: 08/06/09 Basis: as received Analyzed: 08/08/09 Analyte Result RL Dibromochloromethane ND 4.8 1,2-Dibromoethane ND 4.8 Chlorobenzene ND 4.8 1,1,1,2-Tetrachloroethane ND 4.8 Ethylbenzene ND 4.8 m,p-xylenes ND 4.8 o-xylene ND 4.8 Styrene ND 4.8 Bromoform ND 4.8 Isopropylbenzene ND 4.8 1,1,2,2-Tetrachloroethane ND 4.8 1,2,3-Trichloropropane ND 4.8 Propylbenzene ND 4.8 Bromobenzene ND 4.8 1,3,5-Trimethylbenzene ND Chlorotoluene ND Chlorotoluene ND 4.8 tert-butylbenzene ND 4.8 1,2,4-Trimethylbenzene ND 4.8 sec-butylbenzene ND 4.8 para-isopropyl Toluene ND 4.8 1,3-Dichlorobenzene ND 4.8 1,4-Dichlorobenzene ND 4.8 n-butylbenzene ND 4.8 1,2-Dichlorobenzene ND 4.8 1,2-Dibromo-3-Chloropropane ND 4.8 1,2,4-Trichlorobenzene ND 4.8 Hexachlorobutadiene ND 4.8 Naphthalene ND 4.8 1,2,3-Trichlorobenzene ND 4.8 Dibromofluoromethane ,2-Dichloroethane-d Toluene-d Bromofluorobenzene ND= Not Detected RL= Reporting Limit Page 2 of of 108

76 Batch QC Report Purgeable Organics by GC/MS Lab #: Location: 3229/3301 San Leandro Street Client: Treadwell & Rollo Prep: EPA 5030B Project#: Analysis: EPA 8260B Type: BLANK Diln Fac: Lab ID: QC Batch#: Matrix: Soil Analyzed: 08/07/09 Units: ug/kg Analyte Result RL Freon 12 ND 10 Chloromethane ND 10 Vinyl Chloride ND 10 Bromomethane ND 10 Chloroethane ND 10 Trichlorofluoromethane ND 5.0 Acetone ND 20 Freon 113 ND 5.0 1,1-Dichloroethene ND 5.0 Methylene Chloride ND 20 Carbon Disulfide ND 5.0 MTBE ND 5.0 trans-1,2-dichloroethene ND 5.0 Vinyl Acetate ND 50 1,1-Dichloroethane ND Butanone ND 10 cis-1,2-dichloroethene ND 5.0 2,2-Dichloropropane ND 5.0 Chloroform ND 5.0 Bromochloromethane ND 5.0 1,1,1-Trichloroethane ND 5.0 1,1-Dichloropropene ND 5.0 Carbon Tetrachloride ND 5.0 1,2-Dichloroethane ND 5.0 Benzene ND 5.0 Trichloroethene ND 5.0 1,2-Dichloropropane ND 5.0 Bromodichloromethane ND 5.0 Dibromomethane ND Methyl-2-Pentanone ND 10 cis-1,3-dichloropropene ND 5.0 Toluene ND 5.0 trans-1,3-dichloropropene ND 5.0 1,1,2-Trichloroethane ND Hexanone ND 10 1,3-Dichloropropane ND 5.0 Tetrachloroethene ND 5.0 ND= Not Detected RL= Reporting Limit Page 1 of of 108

77 Batch QC Report Purgeable Organics by GC/MS Lab #: Location: 3229/3301 San Leandro Street Client: Treadwell & Rollo Prep: EPA 5030B Project#: Analysis: EPA 8260B Type: BLANK Diln Fac: Lab ID: QC Batch#: Matrix: Soil Analyzed: 08/07/09 Units: ug/kg Analyte Result RL Dibromochloromethane ND 5.0 1,2-Dibromoethane ND 5.0 Chlorobenzene ND 5.0 1,1,1,2-Tetrachloroethane ND 5.0 Ethylbenzene ND 5.0 m,p-xylenes ND 5.0 o-xylene ND 5.0 Styrene ND 5.0 Bromoform ND 5.0 Isopropylbenzene ND 5.0 1,1,2,2-Tetrachloroethane ND 5.0 1,2,3-Trichloropropane ND 5.0 Propylbenzene ND 5.0 Bromobenzene ND 5.0 1,3,5-Trimethylbenzene ND Chlorotoluene ND Chlorotoluene ND 5.0 tert-butylbenzene ND 5.0 1,2,4-Trimethylbenzene ND 5.0 sec-butylbenzene ND 5.0 para-isopropyl Toluene ND 5.0 1,3-Dichlorobenzene ND 5.0 1,4-Dichlorobenzene ND 5.0 n-butylbenzene ND 5.0 1,2-Dichlorobenzene ND 5.0 1,2-Dibromo-3-Chloropropane ND 5.0 1,2,4-Trichlorobenzene ND 5.0 Hexachlorobutadiene ND 5.0 Naphthalene ND 5.0 1,2,3-Trichlorobenzene ND 5.0 Dibromofluoromethane ,2-Dichloroethane-d Toluene-d Bromofluorobenzene ND= Not Detected RL= Reporting Limit Page 2 of of 108

78 Batch QC Report Purgeable Organics by GC/MS Lab #: Location: 3229/3301 San Leandro Street Client: Treadwell & Rollo Prep: EPA 5030B Project#: Analysis: EPA 8260B Type: LCS Diln Fac: Lab ID: QC Batch#: Matrix: Soil Analyzed: 08/07/09 Units: ug/kg Analyte Spiked Result 1,1-Dichloroethene Benzene Trichloroethene Toluene Chlorobenzene Dibromofluoromethane ,2-Dichloroethane-d Toluene-d Bromofluorobenzene Page 1 of of 108

79 Batch QC Report Purgeable Organics by GC/MS Lab #: Location: 3229/3301 San Leandro Street Client: Treadwell & Rollo Prep: EPA 5030B Project#: Analysis: EPA 8260B Matrix: Soil Batch#: Units: ug/kg Analyzed: 08/07/09 Diln Fac: Type: BS Lab ID: QC Analyte Spiked Result 1,1-Dichloroethene Benzene Trichloroethene Toluene Chlorobenzene Dibromofluoromethane ,2-Dichloroethane-d Toluene-d Bromofluorobenzene Type: BSD Lab ID: QC Analyte Spiked Result RPD Lim 1,1-Dichloroethene Benzene Trichloroethene Toluene Chlorobenzene Dibromofluoromethane ,2-Dichloroethane-d Toluene-d Bromofluorobenzene RPD= Relative Percent Difference Page 1 of of 108

80 Batch QC Report Purgeable Organics by GC/MS Lab #: Location: 3229/3301 San Leandro Street Client: Treadwell & Rollo Prep: EPA 5030B Project#: Analysis: EPA 8260B Type: BLANK Diln Fac: Lab ID: QC Batch#: Matrix: Soil Analyzed: 08/07/09 Units: ug/kg Analyte Result RL Freon 12 ND 10 Chloromethane ND 10 Vinyl Chloride ND 10 Bromomethane ND 10 Chloroethane ND 10 Trichlorofluoromethane ND 5.0 Acetone ND 20 Freon 113 ND 5.0 1,1-Dichloroethene ND 5.0 Methylene Chloride ND 20 Carbon Disulfide ND 5.0 MTBE ND 5.0 trans-1,2-dichloroethene ND 5.0 Vinyl Acetate ND 50 1,1-Dichloroethane ND Butanone ND 10 cis-1,2-dichloroethene ND 5.0 2,2-Dichloropropane ND 5.0 Chloroform ND 5.0 Bromochloromethane ND 5.0 1,1,1-Trichloroethane ND 5.0 1,1-Dichloropropene ND 5.0 Carbon Tetrachloride ND 5.0 1,2-Dichloroethane ND 5.0 Benzene ND 5.0 Trichloroethene ND 5.0 1,2-Dichloropropane ND 5.0 Bromodichloromethane ND 5.0 Dibromomethane ND Methyl-2-Pentanone ND 10 cis-1,3-dichloropropene ND 5.0 Toluene ND 5.0 trans-1,3-dichloropropene ND 5.0 1,1,2-Trichloroethane ND Hexanone ND 10 1,3-Dichloropropane ND 5.0 Tetrachloroethene ND 5.0 ND= Not Detected RL= Reporting Limit Page 1 of of 108

81 Batch QC Report Purgeable Organics by GC/MS Lab #: Location: 3229/3301 San Leandro Street Client: Treadwell & Rollo Prep: EPA 5030B Project#: Analysis: EPA 8260B Type: BLANK Diln Fac: Lab ID: QC Batch#: Matrix: Soil Analyzed: 08/07/09 Units: ug/kg Analyte Result RL Dibromochloromethane ND 5.0 1,2-Dibromoethane ND 5.0 Chlorobenzene ND 5.0 1,1,1,2-Tetrachloroethane ND 5.0 Ethylbenzene ND 5.0 m,p-xylenes ND 5.0 o-xylene ND 5.0 Styrene ND 5.0 Bromoform ND 5.0 Isopropylbenzene ND 5.0 1,1,2,2-Tetrachloroethane ND 5.0 1,2,3-Trichloropropane ND 5.0 Propylbenzene ND 5.0 Bromobenzene ND 5.0 1,3,5-Trimethylbenzene ND Chlorotoluene ND Chlorotoluene ND 5.0 tert-butylbenzene ND 5.0 1,2,4-Trimethylbenzene ND 5.0 sec-butylbenzene ND 5.0 para-isopropyl Toluene ND 5.0 1,3-Dichlorobenzene ND 5.0 1,4-Dichlorobenzene ND 5.0 n-butylbenzene ND 5.0 1,2-Dichlorobenzene ND 5.0 1,2-Dibromo-3-Chloropropane ND 5.0 1,2,4-Trichlorobenzene ND 5.0 Hexachlorobutadiene ND 5.0 Naphthalene ND 5.0 1,2,3-Trichlorobenzene ND 5.0 Dibromofluoromethane ,2-Dichloroethane-d Toluene-d Bromofluorobenzene ND= Not Detected RL= Reporting Limit Page 2 of of 108

82 Batch QC Report Purgeable Organics by GC/MS Lab #: Location: 3229/3301 San Leandro Street Client: Treadwell & Rollo Prep: EPA 5030B Project#: Analysis: EPA 8260B Field ID: ZZZZZZZZZZ Batch#: MSS Lab ID: Sampled: 08/03/09 Matrix: Soil Received: 08/04/09 Units: ug/kg Analyzed: 08/08/09 Basis: as received Type: MS Diln Fac: Lab ID: QC Analyte MSS Result Spiked Result 1,1-Dichloroethene < Benzene < Trichloroethene < Toluene < Chlorobenzene < Dibromofluoromethane ,2-Dichloroethane-d Toluene-d Bromofluorobenzene Type: MSD Diln Fac: Lab ID: QC Analyte Spiked Result RPD Lim 1,1-Dichloroethene Benzene Trichloroethene Toluene Chlorobenzene Dibromofluoromethane ,2-Dichloroethane-d Toluene-d Bromofluorobenzene RPD= Relative Percent Difference Page 1 of of 108

83 Batch QC Report Purgeable Organics by GC/MS Lab #: Location: 3229/3301 San Leandro Street Client: Treadwell & Rollo Prep: EPA 5030B Project#: Analysis: EPA 8260B Type: BLANK Diln Fac: Lab ID: QC Batch#: Matrix: Soil Analyzed: 08/07/09 Units: ug/kg Analyte Result RL Freon 12 ND 10 Chloromethane ND 10 Vinyl Chloride ND 10 Bromomethane ND 10 Chloroethane ND 10 Trichlorofluoromethane ND 5.0 Acetone ND 20 Freon 113 ND 5.0 1,1-Dichloroethene ND 5.0 Methylene Chloride ND 20 Carbon Disulfide ND 5.0 MTBE ND 5.0 trans-1,2-dichloroethene ND 5.0 Vinyl Acetate ND 50 1,1-Dichloroethane ND Butanone ND 10 cis-1,2-dichloroethene ND 5.0 2,2-Dichloropropane ND 5.0 Chloroform ND 5.0 Bromochloromethane ND 5.0 1,1,1-Trichloroethane ND 5.0 1,1-Dichloropropene ND 5.0 Carbon Tetrachloride ND 5.0 1,2-Dichloroethane ND 5.0 Benzene ND 5.0 Trichloroethene ND 5.0 1,2-Dichloropropane ND 5.0 Bromodichloromethane ND 5.0 Dibromomethane ND Methyl-2-Pentanone ND 10 cis-1,3-dichloropropene ND 5.0 Toluene ND 5.0 trans-1,3-dichloropropene ND 5.0 1,1,2-Trichloroethane ND Hexanone ND 10 1,3-Dichloropropane ND 5.0 Tetrachloroethene ND 5.0 ND= Not Detected RL= Reporting Limit Page 1 of of 108

84 Batch QC Report Purgeable Organics by GC/MS Lab #: Location: 3229/3301 San Leandro Street Client: Treadwell & Rollo Prep: EPA 5030B Project#: Analysis: EPA 8260B Type: BLANK Diln Fac: Lab ID: QC Batch#: Matrix: Soil Analyzed: 08/07/09 Units: ug/kg Analyte Result RL Dibromochloromethane ND 5.0 1,2-Dibromoethane ND 5.0 Chlorobenzene ND 5.0 1,1,1,2-Tetrachloroethane ND 5.0 Ethylbenzene ND 5.0 m,p-xylenes ND 5.0 o-xylene ND 5.0 Styrene ND 5.0 Bromoform ND 5.0 Isopropylbenzene ND 5.0 1,1,2,2-Tetrachloroethane ND 5.0 1,2,3-Trichloropropane ND 5.0 Propylbenzene ND 5.0 Bromobenzene ND 5.0 1,3,5-Trimethylbenzene ND Chlorotoluene ND Chlorotoluene ND 5.0 tert-butylbenzene ND 5.0 1,2,4-Trimethylbenzene ND 5.0 sec-butylbenzene ND 5.0 para-isopropyl Toluene ND 5.0 1,3-Dichlorobenzene ND 5.0 1,4-Dichlorobenzene ND 5.0 n-butylbenzene ND 5.0 1,2-Dichlorobenzene ND 5.0 1,2-Dibromo-3-Chloropropane ND 5.0 1,2,4-Trichlorobenzene ND 5.0 Hexachlorobutadiene ND 5.0 Naphthalene ND 5.0 1,2,3-Trichlorobenzene ND 5.0 Dibromofluoromethane ,2-Dichloroethane-d Toluene-d Bromofluorobenzene ND= Not Detected RL= Reporting Limit Page 2 of of 108

85 Batch QC Report Purgeable Organics by GC/MS Lab #: Location: 3229/3301 San Leandro Street Client: Treadwell & Rollo Prep: EPA 5030B Project#: Analysis: EPA 8260B Field ID: ZZZZZZZZZZ Batch#: MSS Lab ID: Sampled: 08/03/09 Matrix: Soil Received: 08/05/09 Units: ug/kg Analyzed: 08/10/09 Basis: as received Type: MS Diln Fac: Lab ID: QC Analyte MSS Result Spiked Result 1,1-Dichloroethene < Benzene < Trichloroethene < Toluene < Chlorobenzene < Dibromofluoromethane ,2-Dichloroethane-d Toluene-d Bromofluorobenzene Type: MSD Diln Fac: Lab ID: QC Analyte Spiked Result RPD Lim 1,1-Dichloroethene Benzene Trichloroethene Toluene Chlorobenzene Dibromofluoromethane ,2-Dichloroethane-d Toluene-d Bromofluorobenzene RPD= Relative Percent Difference Page 1 of of 108

86 Semivolatile Organics by GC/MS Lab #: Location: 3229/3301 San Leandro Street Client: Treadwell & Rollo Prep: EPA 3520C Project#: Analysis: EPA 8270C Field ID: SLTR2-3-GW Batch#: Lab ID: Sampled: 08/05/09 Matrix: Water Received: 08/06/09 Units: ug/l Prepared: 08/11/09 Diln Fac: Analyzed: 08/12/09 Analyte Result RL N-Nitrosodimethylamine ND 20 Phenol ND 20 bis(2-chloroethyl)ether ND 20 2-Chlorophenol ND 20 1,3-Dichlorobenzene ND 20 1,4-Dichlorobenzene ND 20 Benzyl alcohol ND 20 1,2-Dichlorobenzene ND 20 2-Methylphenol ND 20 bis(2-chloroisopropyl) ether ND 20 4-Methylphenol ND 20 N-Nitroso-di-n-propylamine ND 20 Hexachloroethane ND 20 Nitrobenzene ND 20 Isophorone ND 20 2-Nitrophenol ND 40 2,4-Dimethylphenol ND 20 Benzoic acid ND 100 bis(2-chloroethoxy)methane ND 20 2,4-Dichlorophenol ND 20 1,2,4-Trichlorobenzene ND 20 Naphthalene ND 20 4-Chloroaniline ND 20 Hexachlorobutadiene ND 20 4-Chloro-3-methylphenol ND 20 2-Methylnaphthalene ND 20 Hexachlorocyclopentadiene ND 40 2,4,6-Trichlorophenol ND 20 2,4,5-Trichlorophenol ND 20 2-Chloronaphthalene ND 20 2-Nitroaniline ND 40 Dimethylphthalate ND 20 Acenaphthylene ND 20 2,6-Dinitrotoluene ND 20 3-Nitroaniline ND 40 Acenaphthene ND 20 2,4-Dinitrophenol ND 40 4-Nitrophenol ND 40 Dibenzofuran ND 20 2,4-Dinitrotoluene ND 20 Diethylphthalate ND 20 Fluorene ND 20 4-Chlorophenyl-phenylether ND 20 4-Nitroaniline ND 40 4,6-Dinitro-2-methylphenol ND 40 N-Nitrosodiphenylamine ND 20 Azobenzene ND 20 4-Bromophenyl-phenylether ND 20 Hexachlorobenzene ND 20 Pentachlorophenol ND 40 Phenanthrene ND 20 Anthracene ND 20 Di-n-butylphthalate ND 20 Fluoranthene ND 20 ND= Not Detected RL= Reporting Limit Page 1 of of 108

87 Semivolatile Organics by GC/MS Lab #: Location: 3229/3301 San Leandro Street Client: Treadwell & Rollo Prep: EPA 3520C Project#: Analysis: EPA 8270C Field ID: SLTR2-3-GW Batch#: Lab ID: Sampled: 08/05/09 Matrix: Water Received: 08/06/09 Units: ug/l Prepared: 08/11/09 Diln Fac: Analyzed: 08/12/09 Analyte Result RL Pyrene ND 20 Butylbenzylphthalate ND 20 3,3'-Dichlorobenzidine ND 40 Benzo(a)anthracene ND 20 Chrysene ND 20 bis(2-ethylhexyl)phthalate ND 20 Di-n-octylphthalate ND 20 Benzo(b)fluoranthene ND 20 Benzo(k)fluoranthene ND 20 Benzo(a)pyrene ND 20 Indeno(1,2,3-cd)pyrene ND 20 Dibenz(a,h)anthracene ND 20 Benzo(g,h,i)perylene ND 20 2-Fluorophenol Phenol-d ,4,6-Tribromophenol Nitrobenzene-d Fluorobiphenyl Terphenyl-d ND= Not Detected RL= Reporting Limit Page 2 of of 108

88 Batch QC Report Semivolatile Organics by GC/MS Lab #: Location: 3229/3301 San Leandro Street Client: Treadwell & Rollo Prep: EPA 3520C Project#: Analysis: EPA 8270C Type: BLANK Diln Fac: Lab ID: QC Batch#: Matrix: Water Prepared: 08/11/09 Units: ug/l Analyzed: 08/12/09 Analyte Result RL N-Nitrosodimethylamine ND 10 Phenol ND 10 bis(2-chloroethyl)ether ND 10 2-Chlorophenol ND 10 1,3-Dichlorobenzene ND 10 1,4-Dichlorobenzene ND 10 Benzyl alcohol ND 10 1,2-Dichlorobenzene ND 10 2-Methylphenol ND 10 bis(2-chloroisopropyl) ether ND 10 4-Methylphenol ND 10 N-Nitroso-di-n-propylamine ND 10 Hexachloroethane ND 10 Nitrobenzene ND 10 Isophorone ND 10 2-Nitrophenol ND 20 2,4-Dimethylphenol ND 10 Benzoic acid ND 50 bis(2-chloroethoxy)methane ND 10 2,4-Dichlorophenol ND 10 1,2,4-Trichlorobenzene ND 10 Naphthalene ND 10 4-Chloroaniline ND 10 Hexachlorobutadiene ND 10 4-Chloro-3-methylphenol ND 10 2-Methylnaphthalene ND 10 Hexachlorocyclopentadiene ND 20 2,4,6-Trichlorophenol ND 10 2,4,5-Trichlorophenol ND 10 2-Chloronaphthalene ND 10 2-Nitroaniline ND 20 Dimethylphthalate ND 10 Acenaphthylene ND 10 2,6-Dinitrotoluene ND 10 3-Nitroaniline ND 20 Acenaphthene ND 10 2,4-Dinitrophenol ND 20 4-Nitrophenol ND 20 Dibenzofuran ND 10 2,4-Dinitrotoluene ND 10 Diethylphthalate ND 10 Fluorene ND 10 4-Chlorophenyl-phenylether ND 10 4-Nitroaniline ND 20 4,6-Dinitro-2-methylphenol ND 20 N-Nitrosodiphenylamine ND 10 Azobenzene ND 10 4-Bromophenyl-phenylether ND 10 Hexachlorobenzene ND 10 Pentachlorophenol ND 20 Phenanthrene ND 10 Anthracene ND 10 Di-n-butylphthalate ND 10 Fluoranthene ND 10 ND= Not Detected RL= Reporting Limit Page 1 of of 108

89 Batch QC Report Semivolatile Organics by GC/MS Lab #: Location: 3229/3301 San Leandro Street Client: Treadwell & Rollo Prep: EPA 3520C Project#: Analysis: EPA 8270C Type: BLANK Diln Fac: Lab ID: QC Batch#: Matrix: Water Prepared: 08/11/09 Units: ug/l Analyzed: 08/12/09 Analyte Result RL Pyrene ND 10 Butylbenzylphthalate ND 10 3,3'-Dichlorobenzidine ND 20 Benzo(a)anthracene ND 10 Chrysene ND 10 bis(2-ethylhexyl)phthalate ND 10 Di-n-octylphthalate ND 10 Benzo(b)fluoranthene ND 10 Benzo(k)fluoranthene ND 10 Benzo(a)pyrene ND 10 Indeno(1,2,3-cd)pyrene ND 10 Dibenz(a,h)anthracene ND 10 Benzo(g,h,i)perylene ND 10 2-Fluorophenol Phenol-d ,4,6-Tribromophenol Nitrobenzene-d Fluorobiphenyl Terphenyl-d ND= Not Detected RL= Reporting Limit Page 2 of of 108

90 Batch QC Report Semivolatile Organics by GC/MS Lab #: Location: 3229/3301 San Leandro Street Client: Treadwell & Rollo Prep: EPA 3520C Project#: Analysis: EPA 8270C Matrix: Water Batch#: Units: ug/l Prepared: 08/11/09 Diln Fac: Analyzed: 08/12/09 Type: BS Lab ID: QC Analyte Spiked Result Phenol Chlorophenol ,4-Dichlorobenzene N-Nitroso-di-n-propylamine ,2,4-Trichlorobenzene Chloro-3-methylphenol Acenaphthene Nitrophenol ,4-Dinitrotoluene Pentachlorophenol Pyrene Fluorophenol Phenol-d ,4,6-Tribromophenol Nitrobenzene-d Fluorobiphenyl Terphenyl-d Type: BSD Lab ID: QC Analyte Spiked Result RPD Lim Phenol Chlorophenol ,4-Dichlorobenzene N-Nitroso-di-n-propylamine ,2,4-Trichlorobenzene Chloro-3-methylphenol Acenaphthene Nitrophenol ,4-Dinitrotoluene Pentachlorophenol Pyrene Fluorophenol Phenol-d ,4,6-Tribromophenol Nitrobenzene-d Fluorobiphenyl Terphenyl-d RPD= Relative Percent Difference Page 1 of of 108

91 Semivolatile Organics by GC/MS Lab #: Location: 3229/3301 San Leandro Street Client: Treadwell & Rollo Prep: EPA 3550B Project#: Analysis: EPA 8270C Field ID: SLTR Batch#: Lab ID: Sampled: 08/05/09 Matrix: Soil Received: 08/06/09 Units: ug/kg Prepared: 08/09/09 Basis: as received Analyzed: 08/10/09 Diln Fac: Analyte Result RL N-Nitrosodimethylamine ND 3,300 Phenol ND 3,300 bis(2-chloroethyl)ether ND 3,300 2-Chlorophenol ND 3,300 1,3-Dichlorobenzene ND 3,300 1,4-Dichlorobenzene ND 3,300 Benzyl alcohol ND 3,300 1,2-Dichlorobenzene ND 3,300 2-Methylphenol ND 3,300 bis(2-chloroisopropyl) ether ND 3,300 4-Methylphenol ND 3,300 N-Nitroso-di-n-propylamine ND 3,300 Hexachloroethane ND 3,300 Nitrobenzene ND 3,300 Isophorone ND 3,300 2-Nitrophenol ND 6,600 2,4-Dimethylphenol ND 3,300 Benzoic acid ND 16,000 bis(2-chloroethoxy)methane ND 3,300 2,4-Dichlorophenol ND 3,300 1,2,4-Trichlorobenzene ND 3,300 Naphthalene ND Chloroaniline ND 3,300 Hexachlorobutadiene ND 3,300 4-Chloro-3-methylphenol ND 3,300 2-Methylnaphthalene ND 660 Hexachlorocyclopentadiene ND 6,600 2,4,6-Trichlorophenol ND 3,300 2,4,5-Trichlorophenol ND 3,300 2-Chloronaphthalene ND 3,300 2-Nitroaniline ND 6,600 Dimethylphthalate ND 3,300 Acenaphthylene ND 660 2,6-Dinitrotoluene ND 3,300 3-Nitroaniline ND 6,600 Acenaphthene ND 660 2,4-Dinitrophenol ND 6,600 4-Nitrophenol ND 6,600 Dibenzofuran ND 3,300 2,4-Dinitrotoluene ND 3,300 Diethylphthalate ND 3,300 Fluorene ND Chlorophenyl-phenylether ND 3,300 4-Nitroaniline ND 6,600 4,6-Dinitro-2-methylphenol ND 6,600 N-Nitrosodiphenylamine ND 3,300 Azobenzene ND 3,300 4-Bromophenyl-phenylether ND 3,300 Hexachlorobenzene ND 3,300 Pentachlorophenol ND 6,600 Phenanthrene ND 660 Anthracene ND 660 DO= Diluted Out ND= Not Detected RL= Reporting Limit Page 1 of of 108

92 Semivolatile Organics by GC/MS Lab #: Location: 3229/3301 San Leandro Street Client: Treadwell & Rollo Prep: EPA 3550B Project#: Analysis: EPA 8270C Field ID: SLTR Batch#: Lab ID: Sampled: 08/05/09 Matrix: Soil Received: 08/06/09 Units: ug/kg Prepared: 08/09/09 Basis: as received Analyzed: 08/10/09 Diln Fac: Analyte Result RL Di-n-butylphthalate ND 3,300 Fluoranthene ND 660 Pyrene ND 660 Butylbenzylphthalate ND 3,300 3,3'-Dichlorobenzidine ND 6,600 Benzo(a)anthracene ND 660 Chrysene ND 660 bis(2-ethylhexyl)phthalate ND 3,300 Di-n-octylphthalate ND 3,300 Benzo(b)fluoranthene ND 660 Benzo(k)fluoranthene ND 660 Benzo(a)pyrene ND 660 Indeno(1,2,3-cd)pyrene ND 660 Dibenz(a,h)anthracene ND 660 Benzo(g,h,i)perylene ND Fluorophenol DO Phenol-d5 DO ,4,6-Tribromophenol DO Nitrobenzene-d5 DO Fluorobiphenyl DO Terphenyl-d14 DO DO= Diluted Out ND= Not Detected RL= Reporting Limit Page 2 of of 108

93 Semivolatile Organics by GC/MS Lab #: Location: 3229/3301 San Leandro Street Client: Treadwell & Rollo Prep: EPA 3550B Project#: Analysis: EPA 8270C Field ID: SLTR Batch#: Lab ID: Sampled: 08/05/09 Matrix: Soil Received: 08/06/09 Units: ug/kg Prepared: 08/09/09 Basis: as received Analyzed: 08/10/09 Diln Fac: Analyte Result RL N-Nitrosodimethylamine ND 11,000 Phenol ND 11,000 bis(2-chloroethyl)ether ND 11,000 2-Chlorophenol ND 11,000 1,3-Dichlorobenzene ND 11,000 1,4-Dichlorobenzene ND 11,000 Benzyl alcohol ND 11,000 1,2-Dichlorobenzene ND 11,000 2-Methylphenol ND 11,000 bis(2-chloroisopropyl) ether ND 11,000 4-Methylphenol ND 11,000 N-Nitroso-di-n-propylamine ND 11,000 Hexachloroethane ND 11,000 Nitrobenzene ND 11,000 Isophorone ND 11,000 2-Nitrophenol ND 22,000 2,4-Dimethylphenol ND 11,000 Benzoic acid ND 56,000 bis(2-chloroethoxy)methane ND 11,000 2,4-Dichlorophenol ND 11,000 1,2,4-Trichlorobenzene ND 11,000 Naphthalene ND 2,200 4-Chloroaniline ND 11,000 Hexachlorobutadiene ND 11,000 4-Chloro-3-methylphenol ND 11,000 2-Methylnaphthalene ND 2,200 Hexachlorocyclopentadiene ND 22,000 2,4,6-Trichlorophenol ND 11,000 2,4,5-Trichlorophenol ND 11,000 2-Chloronaphthalene ND 11,000 2-Nitroaniline ND 22,000 Dimethylphthalate ND 11,000 Acenaphthylene ND 2,200 2,6-Dinitrotoluene ND 11,000 3-Nitroaniline ND 22,000 Acenaphthene ND 2,200 2,4-Dinitrophenol ND 22,000 4-Nitrophenol ND 22,000 Dibenzofuran ND 11,000 2,4-Dinitrotoluene ND 11,000 Diethylphthalate ND 11,000 Fluorene ND 2,200 4-Chlorophenyl-phenylether ND 11,000 4-Nitroaniline ND 22,000 4,6-Dinitro-2-methylphenol ND 22,000 N-Nitrosodiphenylamine ND 11,000 Azobenzene ND 11,000 4-Bromophenyl-phenylether ND 11,000 Hexachlorobenzene ND 11,000 Pentachlorophenol ND 22,000 Phenanthrene ND 2,200 Anthracene ND 2,200 DO= Diluted Out ND= Not Detected RL= Reporting Limit Page 1 of of 108

94 Semivolatile Organics by GC/MS Lab #: Location: 3229/3301 San Leandro Street Client: Treadwell & Rollo Prep: EPA 3550B Project#: Analysis: EPA 8270C Field ID: SLTR Batch#: Lab ID: Sampled: 08/05/09 Matrix: Soil Received: 08/06/09 Units: ug/kg Prepared: 08/09/09 Basis: as received Analyzed: 08/10/09 Diln Fac: Analyte Result RL Di-n-butylphthalate ND 11,000 Fluoranthene ND 2,200 Pyrene ND 2,200 Butylbenzylphthalate ND 11,000 3,3'-Dichlorobenzidine ND 22,000 Benzo(a)anthracene ND 2,200 Chrysene ND 2,200 bis(2-ethylhexyl)phthalate ND 11,000 Di-n-octylphthalate ND 11,000 Benzo(b)fluoranthene ND 2,200 Benzo(k)fluoranthene ND 2,200 Benzo(a)pyrene ND 2,200 Indeno(1,2,3-cd)pyrene ND 2,200 Dibenz(a,h)anthracene ND 2,200 Benzo(g,h,i)perylene ND 2,200 2-Fluorophenol DO Phenol-d5 DO ,4,6-Tribromophenol DO Nitrobenzene-d5 DO Fluorobiphenyl DO Terphenyl-d14 DO DO= Diluted Out ND= Not Detected RL= Reporting Limit Page 2 of of 108

95 Batch QC Report Semivolatile Organics by GC/MS Lab #: Location: 3229/3301 San Leandro Street Client: Treadwell & Rollo Prep: EPA 3550B Project#: Analysis: EPA 8270C Type: BLANK Diln Fac: Lab ID: QC Batch#: Matrix: Soil Prepared: 08/09/09 Units: ug/kg Analyzed: 08/10/09 Analyte Result RL N-Nitrosodimethylamine ND 330 Phenol ND 330 bis(2-chloroethyl)ether ND Chlorophenol ND 330 1,3-Dichlorobenzene ND 330 1,4-Dichlorobenzene ND 330 Benzyl alcohol ND 330 1,2-Dichlorobenzene ND Methylphenol ND 330 bis(2-chloroisopropyl) ether ND Methylphenol ND 330 N-Nitroso-di-n-propylamine ND 330 Hexachloroethane ND 330 Nitrobenzene ND 330 Isophorone ND Nitrophenol ND 660 2,4-Dimethylphenol ND 330 Benzoic acid ND 1,700 bis(2-chloroethoxy)methane ND 330 2,4-Dichlorophenol ND 330 1,2,4-Trichlorobenzene ND 330 Naphthalene ND 66 4-Chloroaniline ND 330 Hexachlorobutadiene ND Chloro-3-methylphenol ND Methylnaphthalene ND 66 Hexachlorocyclopentadiene ND 660 2,4,6-Trichlorophenol ND 330 2,4,5-Trichlorophenol ND Chloronaphthalene ND Nitroaniline ND 660 Dimethylphthalate ND 330 Acenaphthylene ND 66 2,6-Dinitrotoluene ND Nitroaniline ND 660 Acenaphthene ND 66 2,4-Dinitrophenol ND Nitrophenol ND 660 Dibenzofuran ND 330 2,4-Dinitrotoluene ND 330 Diethylphthalate ND 330 Fluorene ND 66 4-Chlorophenyl-phenylether ND Nitroaniline ND 660 4,6-Dinitro-2-methylphenol ND 660 N-Nitrosodiphenylamine ND 330 Azobenzene ND Bromophenyl-phenylether ND 330 Hexachlorobenzene ND 330 Pentachlorophenol ND 660 Phenanthrene ND 66 Anthracene ND 66 Di-n-butylphthalate ND 330 Fluoranthene ND 66 ND= Not Detected RL= Reporting Limit Page 1 of of 108

96 Batch QC Report Semivolatile Organics by GC/MS Lab #: Location: 3229/3301 San Leandro Street Client: Treadwell & Rollo Prep: EPA 3550B Project#: Analysis: EPA 8270C Type: BLANK Diln Fac: Lab ID: QC Batch#: Matrix: Soil Prepared: 08/09/09 Units: ug/kg Analyzed: 08/10/09 Analyte Result RL Pyrene ND 66 Butylbenzylphthalate ND 330 3,3'-Dichlorobenzidine ND 660 Benzo(a)anthracene ND 66 Chrysene ND 66 bis(2-ethylhexyl)phthalate ND 330 Di-n-octylphthalate ND 330 Benzo(b)fluoranthene ND 66 Benzo(k)fluoranthene ND 66 Benzo(a)pyrene ND 66 Indeno(1,2,3-cd)pyrene ND 66 Dibenz(a,h)anthracene ND 66 Benzo(g,h,i)perylene ND 66 2-Fluorophenol Phenol-d ,4,6-Tribromophenol Nitrobenzene-d Fluorobiphenyl Terphenyl-d ND= Not Detected RL= Reporting Limit Page 2 of of 108

97 Batch QC Report Semivolatile Organics by GC/MS Lab #: Location: 3229/3301 San Leandro Street Client: Treadwell & Rollo Prep: EPA 3550B Project#: Analysis: EPA 8270C Type: LCS Diln Fac: Lab ID: QC Batch#: Matrix: Soil Prepared: 08/09/09 Units: ug/kg Analyzed: 08/10/09 Analyte Spiked Result Phenol 2,640 1, Chlorophenol 2,640 1, ,4-Dichlorobenzene 2,640 1, N-Nitroso-di-n-propylamine 2,640 1, ,2,4-Trichlorobenzene 2,640 1, Chloro-3-methylphenol 2,640 2, Acenaphthene Nitrophenol 2,640 1, ,4-Dinitrotoluene 2,640 1, Pentachlorophenol 2,640 1, Pyrene Fluorophenol Phenol-d ,4,6-Tribromophenol Nitrobenzene-d Fluorobiphenyl Terphenyl-d Page 1 of of 108

98 Batch QC Report Semivolatile Organics by GC/MS Lab #: Location: 3229/3301 San Leandro Street Client: Treadwell & Rollo Prep: EPA 3550B Project#: Analysis: EPA 8270C Field ID: ZZZZZZZZZZ Batch#: MSS Lab ID: Sampled: 08/04/09 Matrix: Soil Received: 08/04/09 Units: ug/kg Prepared: 08/09/09 Basis: as received Analyzed: 08/10/09 Diln Fac: Type: MS Lab ID: QC Analyte MSS Result Spiked Result Phenol < ,646 1, Chlorophenol < ,646 1, ,4-Dichlorobenzene < ,646 1, N-Nitroso-di-n-propylamine < ,646 2, ,2,4-Trichlorobenzene < ,646 1, Chloro-3-methylphenol < ,646 1, Acenaphthene < Nitrophenol < ,646 1, ,4-Dinitrotoluene < ,646 1, Pentachlorophenol < ,646 1, Pyrene < Fluorophenol Phenol-d ,4,6-Tribromophenol Nitrobenzene-d Fluorobiphenyl Terphenyl-d Type: MSD Lab ID: QC Analyte Spiked Result RPD Lim Phenol 2,637 2, Chlorophenol 2,637 2, ,4-Dichlorobenzene 2,637 1, N-Nitroso-di-n-propylamine 2,637 2, ,2,4-Trichlorobenzene 2,637 1, Chloro-3-methylphenol 2,637 2, Acenaphthene Nitrophenol 2,637 1, ,4-Dinitrotoluene 2,637 2, Pentachlorophenol 2,637 1, Pyrene Fluorophenol Phenol-d ,4,6-Tribromophenol Nitrobenzene-d Fluorobiphenyl Terphenyl-d RPD= Relative Percent Difference Page 1 of of 108

99 Organochlorine Pesticides Lab #: Location: 3229/3301 San Leandro Street Client: Treadwell & Rollo Prep: EPA 3550B Project#: Analysis: EPA 8081B Field ID: SLTR Batch#: Lab ID: Sampled: 08/05/09 Matrix: Soil Received: 08/06/09 Units: ug/kg Prepared: 08/10/09 Basis: as received Analyzed: 08/13/09 Diln Fac: Analyte Result RL alpha-bhc ND 1.7 beta-bhc ND 1.7 gamma-bhc ND 1.7 delta-bhc ND 1.7 Heptachlor ND 1.7 Aldrin 2.6 C 1.7 Heptachlor epoxide Endosulfan I ND 1.7 Dieldrin ,4'-DDE ND 3.3 Endrin ND 3.3 Endosulfan II ND 3.3 Endosulfan sulfate ND 3.3 4,4'-DDD ND 3.3 Endrin aldehyde ND 3.3 4,4'-DDT ND 3.3 alpha-chlordane gamma-chlordane Methoxychlor ND 17 Toxaphene ND 60 TCMX Decachlorobiphenyl C= Presence confirmed, but RPD between columns exceeds 40% ND= Not Detected RL= Reporting Limit Page 1 of of 108

100 Organochlorine Pesticides Lab #: Location: 3229/3301 San Leandro Street Client: Treadwell & Rollo Prep: EPA 3550B Project#: Analysis: EPA 8081B Field ID: SLTR Batch#: Lab ID: Sampled: 08/05/09 Matrix: Soil Received: 08/06/09 Units: ug/kg Prepared: 08/10/09 Basis: as received Analyzed: 08/13/09 Diln Fac: Analyte Result RL alpha-bhc ND 34 beta-bhc ND 34 gamma-bhc ND 34 delta-bhc ND 34 Heptachlor ND 34 Aldrin ND 34 Heptachlor epoxide ND 34 Endosulfan I ND 34 Dieldrin ND 65 4,4'-DDE ND 65 Endrin ND 65 Endosulfan II ND 65 Endosulfan sulfate ND 65 4,4'-DDD ND 65 Endrin aldehyde ND 65 4,4'-DDT ND 65 alpha-chlordane ND 34 gamma-chlordane ND 34 Methoxychlor ND 340 Toxaphene ND 1,200 TCMX DO Decachlorobiphenyl DO DO= Diluted Out ND= Not Detected RL= Reporting Limit Page 1 of of 108

101 Batch QC Report Organochlorine Pesticides Lab #: Location: 3229/3301 San Leandro Street Client: Treadwell & Rollo Prep: EPA 3550B Project#: Analysis: EPA 8081B Type: BLANK Diln Fac: Lab ID: QC Batch#: Matrix: Soil Prepared: 08/10/09 Units: ug/kg Analyzed: 08/12/09 Analyte Result RL alpha-bhc ND 1.7 beta-bhc ND 1.7 gamma-bhc ND 1.7 delta-bhc ND 1.7 Heptachlor ND 1.7 Aldrin ND 1.7 Heptachlor epoxide ND 1.7 Endosulfan I ND 1.7 Dieldrin ND 3.3 4,4'-DDE ND 3.3 Endrin ND 3.3 Endosulfan II ND 3.3 Endosulfan sulfate ND 3.3 4,4'-DDD ND 3.3 Endrin aldehyde ND 3.3 4,4'-DDT ND 3.3 alpha-chlordane ND 1.7 gamma-chlordane ND 1.7 Methoxychlor ND 17 Toxaphene ND 60 TCMX Decachlorobiphenyl ND= Not Detected RL= Reporting Limit Page 1 of of 108

102 Batch QC Report Organochlorine Pesticides Lab #: Location: 3229/3301 San Leandro Street Client: Treadwell & Rollo Prep: EPA 3550B Project#: Analysis: EPA 8081B Type: LCS Diln Fac: Lab ID: QC Batch#: Matrix: Soil Prepared: 08/10/09 Units: ug/kg Analyzed: 08/12/09 Analyte Spiked Result gamma-bhc Heptachlor Aldrin Dieldrin Endrin ,4'-DDT TCMX Decachlorobiphenyl Page 1 of of 108

103 Polychlorinated Biphenyls (PCBs) Lab #: Location: 3229/3301 San Leandro Street Client: Treadwell & Rollo Prep: EPA 3550B Project#: Analysis: EPA 8082 Matrix: Soil Sampled: 08/05/09 Units: ug/kg Received: 08/06/09 Basis: as received Prepared: 08/10/09 Diln Fac: Analyzed: 08/13/09 Batch#: Field ID: SLTR Lab ID: Type: SAMPLE Analyte Result RL Aroclor-1016 ND 12 Aroclor-1221 ND 24 Aroclor-1232 ND 12 Aroclor-1242 ND 12 Aroclor-1248 ND 12 Aroclor-1254 ND 12 Aroclor-1260 ND 12 TCMX Decachlorobiphenyl Field ID: SLTR Lab ID: Type: SAMPLE Analyte Result RL Aroclor-1016 ND 12 Aroclor-1221 ND 24 Aroclor-1232 ND 12 Aroclor-1242 ND 12 Aroclor-1248 ND 12 Aroclor Aroclor-1260 ND 12 TCMX Decachlorobiphenyl 44 * Type: BLANK Lab ID: QC Analyte Result RL Aroclor-1016 ND 12 Aroclor-1221 ND 24 Aroclor-1232 ND 12 Aroclor-1242 ND 12 Aroclor-1248 ND 12 Aroclor-1254 ND 12 Aroclor-1260 ND 12 TCMX Decachlorobiphenyl *= Value outside of QC limits; see narrative ND= Not Detected RL= Reporting Limit Page 1 of of 108

104 Batch QC Report Polychlorinated Biphenyls (PCBs) Lab #: Location: 3229/3301 San Leandro Street Client: Treadwell & Rollo Prep: EPA 3550B Project#: Analysis: EPA 8082 Type: LCS Diln Fac: Lab ID: QC Batch#: Matrix: Soil Prepared: 08/10/09 Units: ug/kg Analyzed: 08/13/09 Analyte Spiked Result Aroclor Aroclor TCMX Decachlorobiphenyl Page 1 of of 108

105 Batch QC Report Polychlorinated Biphenyls (PCBs) Lab #: Location: 3229/3301 San Leandro Street Client: Treadwell & Rollo Prep: EPA 3550B Project#: Analysis: EPA 8082 Field ID: SLTR Batch#: MSS Lab ID: Sampled: 08/05/09 Matrix: Soil Received: 08/06/09 Units: ug/kg Prepared: 08/10/09 Basis: as received Analyzed: 08/13/09 Diln Fac: Type: MS Lab ID: QC Analyte MSS Result Spiked Result Aroclor-1016 < Aroclor-1260 < TCMX Decachlorobiphenyl Type: MSD Lab ID: QC Analyte Spiked Result RPD Lim Aroclor Aroclor TCMX Decachlorobiphenyl RPD= Relative Percent Difference Page 1 of of 108

106 California Title 22 Metals Lab #: Project#: Client: Treadwell & Rollo Location: 3229/3301 San Leandro Street Field ID: SLTR2-3-GW Diln Fac: Lab ID: Sampled: 08/05/09 Matrix: Water Received: 08/06/09 Units: ug/l Prepared: 08/10/09 Analyte Result RL Batch# Analyzed Prep Analysis Antimony ND /11/09 EPA 3010A EPA 6010B Arsenic /11/09 EPA 3010A EPA 6010B Barium /11/09 EPA 3010A EPA 6010B Beryllium ND /11/09 EPA 3010A EPA 6010B Cadmium ND /11/09 EPA 3010A EPA 6010B Chromium /11/09 EPA 3010A EPA 6010B Cobalt /11/09 EPA 3010A EPA 6010B Copper /11/09 EPA 3010A EPA 6010B Lead /11/09 EPA 3010A EPA 6010B Mercury /10/09 METHOD EPA 7470A Molybdenum /11/09 EPA 3010A EPA 6010B Nickel /11/09 EPA 3010A EPA 6010B Selenium ND /11/09 EPA 3010A EPA 6010B Silver ND /11/09 EPA 3010A EPA 6010B Thallium ND /11/09 EPA 3010A EPA 6010B Vanadium /11/09 EPA 3010A EPA 6010B Zinc /11/09 EPA 3010A EPA 6010B ND= Not Detected RL= Reporting Limit Page 1 of of 108

107 Batch QC Report California Title 22 Metals Lab #: Location: 3229/3301 San Leandro Street Client: Treadwell & Rollo Prep: METHOD Project#: Analysis: EPA 7470A Analyte: Mercury Diln Fac: Type: BLANK Batch#: Lab ID: QC Prepared: 08/10/09 Matrix: Water Analyzed: 08/10/09 Units: ug/l Result RL ND 0.20 ND= Not Detected RL= Reporting Limit Page 1 of of 108

108 Batch QC Report California Title 22 Metals Lab #: Location: 3229/3301 San Leandro Street Client: Treadwell & Rollo Prep: METHOD Project#: Analysis: EPA 7470A Analyte: Mercury Batch#: Matrix: Water Prepared: 08/10/09 Units: ug/l Analyzed: 08/10/09 Diln Fac: Type Lab ID Spiked Result RPD Lim BS QC BSD QC RPD= Relative Percent Difference Page 1 of of 108

109 Batch QC Report California Title 22 Metals Lab #: Location: 3229/3301 San Leandro Street Client: Treadwell & Rollo Prep: METHOD Project#: Analysis: EPA 7470A Analyte: Mercury Batch#: Field ID: ZZZZZZZZZZ Sampled: 08/04/09 MSS Lab ID: Received: 08/04/09 Matrix: Water Prepared: 08/10/09 Units: ug/l Analyzed: 08/10/09 Diln Fac: Type Lab ID MSS Result Spiked Result RPD Lim MS QC MSD QC RPD= Relative Percent Difference Page 1 of of 108

110 Batch QC Report California Title 22 Metals Lab #: Location: 3229/3301 San Leandro Street Client: Treadwell & Rollo Prep: EPA 3010A Project#: Analysis: EPA 6010B Type: BLANK Diln Fac: Lab ID: QC Batch#: Matrix: Water Prepared: 08/10/09 Units: ug/l Analyzed: 08/11/09 Analyte Result RL Antimony ND 10 Arsenic ND 5.0 Barium ND 5.0 Beryllium ND 2.0 Cadmium ND 5.0 Chromium ND 5.0 Cobalt ND 5.0 Copper ND 5.0 Lead ND 3.0 Molybdenum ND 5.0 Nickel ND 5.0 Selenium ND 10 Silver ND 5.0 Thallium ND 10 Vanadium ND 5.0 Zinc ND 20 ND= Not Detected RL= Reporting Limit Page 1 of of 108

111 Batch QC Report California Title 22 Metals Lab #: Location: 3229/3301 San Leandro Street Client: Treadwell & Rollo Prep: EPA 3010A Project#: Analysis: EPA 6010B Matrix: Water Batch#: Units: ug/l Prepared: 08/10/09 Diln Fac: Type: BS Lab ID: QC Analyte Spiked Result Analyzed Antimony /11/09 Arsenic /11/09 Barium /11/09 Beryllium /12/09 Cadmium /11/09 Chromium /11/09 Cobalt /11/09 Copper /11/09 Lead /11/09 Molybdenum /11/09 Nickel /11/09 Selenium /11/09 Silver /11/09 Thallium /11/09 Vanadium /11/09 Zinc /11/09 Type: BSD Lab ID: QC Analyte Spiked Result RPD Lim Analyzed Antimony /11/09 Arsenic /11/09 Barium /11/09 Beryllium /12/09 Cadmium /11/09 Chromium /11/09 Cobalt /11/09 Copper /11/09 Lead /11/09 Molybdenum /11/09 Nickel /11/09 Selenium /11/09 Silver /11/09 Thallium /11/09 Vanadium /11/09 Zinc /11/09 RPD= Relative Percent Difference Page 1 of of 108

112 Batch QC Report California Title 22 Metals Lab #: Location: 3229/3301 San Leandro Street Client: Treadwell & Rollo Prep: EPA 3010A Project#: Analysis: EPA 6010B Field ID: ZZZZZZZZZZ Batch#: MSS Lab ID: Sampled: 07/31/09 Matrix: Water Received: 07/31/09 Units: ug/l Prepared: 08/10/09 Diln Fac: Type: MS Lab ID: QC Analyte MSS Result Spiked Result Analyzed Antimony < /11/09 Arsenic /11/09 Barium /11/09 Beryllium < /12/09 Cadmium < /11/09 Chromium < /11/09 Cobalt < /11/09 Copper /11/09 Lead < /11/09 Molybdenum < /11/09 Nickel /11/09 Selenium < * /11/09 Silver < /11/09 Thallium /11/09 Vanadium < /11/09 Zinc * /11/09 Type: MSD Lab ID: QC Analyte Spiked Result RPD Lim Analyzed Antimony /11/09 Arsenic /11/09 Barium /11/09 Beryllium /12/09 Cadmium /11/09 Chromium /11/09 Cobalt /11/09 Copper /11/09 Lead /11/09 Molybdenum /11/09 Nickel /11/09 Selenium * /11/09 Silver /11/09 Thallium /11/09 Vanadium /11/09 Zinc * 20 08/11/09 *= Value outside of QC limits; see narrative RPD= Relative Percent Difference Page 1 of of 108

113 California LUFT Metals Lab #: Location: 3229/3301 San Leandro Street Client: Treadwell & Rollo Prep: EPA 3050B Project#: Analysis: EPA 6010B Matrix: Soil Sampled: 08/05/09 Units: mg/kg Received: 08/06/09 Basis: as received Prepared: 08/10/09 Diln Fac: Analyzed: 08/11/09 Batch#: Field ID: SLTR Lab ID: Type: SAMPLE Analyte Result RL Cadmium Chromium Lead Nickel Zinc Field ID: SLTR Lab ID: Type: SAMPLE Analyte Result RL Cadmium ND 0.25 Chromium Lead Nickel Zinc Field ID: SLTR Lab ID: Type: SAMPLE Analyte Result RL Cadmium Chromium Lead Nickel Zinc ND= Not Detected RL= Reporting Limit Page 1 of of 108

114 California LUFT Metals Lab #: Location: 3229/3301 San Leandro Street Client: Treadwell & Rollo Prep: EPA 3050B Project#: Analysis: EPA 6010B Matrix: Soil Sampled: 08/05/09 Units: mg/kg Received: 08/06/09 Basis: as received Prepared: 08/10/09 Diln Fac: Analyzed: 08/11/09 Batch#: Field ID: SLTR Lab ID: Type: SAMPLE Analyte Result RL Cadmium ND 0.25 Chromium Lead Nickel Zinc Type: BLANK Lab ID: QC Analyte Result RL Cadmium ND 0.25 Chromium ND 0.25 Lead ND 0.25 Nickel ND 0.25 Zinc ND 1.0 ND= Not Detected RL= Reporting Limit Page 2 of of 108

115 California Title 22 Metals Lab #: Project#: Client: Treadwell & Rollo Location: 3229/3301 San Leandro Street Field ID: SLTR Basis: as received Lab ID: Diln Fac: Matrix: Soil Sampled: 08/05/09 Units: mg/kg Received: 08/06/09 Analyte Result RL Batch# Prepared Analyzed Prep Analysis Antimony ND /10/09 08/11/09 EPA 3050B EPA 6010B Arsenic /10/09 08/11/09 EPA 3050B EPA 6010B Barium /10/09 08/11/09 EPA 3050B EPA 6010B Beryllium /10/09 08/11/09 EPA 3050B EPA 6010B Cadmium ND /10/09 08/11/09 EPA 3050B EPA 6010B Chromium /10/09 08/11/09 EPA 3050B EPA 6010B Cobalt /10/09 08/11/09 EPA 3050B EPA 6010B Copper /10/09 08/11/09 EPA 3050B EPA 6010B Lead /10/09 08/11/09 EPA 3050B EPA 6010B Mercury /07/09 08/07/09 METHOD EPA 7471A Molybdenum ND /10/09 08/11/09 EPA 3050B EPA 6010B Nickel /10/09 08/11/09 EPA 3050B EPA 6010B Selenium ND /10/09 08/11/09 EPA 3050B EPA 6010B Silver ND /10/09 08/11/09 EPA 3050B EPA 6010B Thallium ND /10/09 08/11/09 EPA 3050B EPA 6010B Vanadium /10/09 08/11/09 EPA 3050B EPA 6010B Zinc /10/09 08/11/09 EPA 3050B EPA 6010B ND= Not Detected RL= Reporting Limit Page 1 of of 108

116 California Title 22 Metals Lab #: Project#: Client: Treadwell & Rollo Location: 3229/3301 San Leandro Street Field ID: SLTR Basis: as received Lab ID: Sampled: 08/05/09 Matrix: Soil Received: 08/06/09 Units: mg/kg Analyte Result RL Diln Fac Batch# Prepared Analyzed Prep Analysis Antimony ND /10/09 08/11/09 EPA 3050B EPA 6010B Arsenic /10/09 08/11/09 EPA 3050B EPA 6010B Barium /10/09 08/11/09 EPA 3050B EPA 6010B Beryllium /10/09 08/11/09 EPA 3050B EPA 6010B Cadmium /10/09 08/11/09 EPA 3050B EPA 6010B Chromium /10/09 08/11/09 EPA 3050B EPA 6010B Cobalt /10/09 08/11/09 EPA 3050B EPA 6010B Copper /10/09 08/11/09 EPA 3050B EPA 6010B Lead /10/09 08/11/09 EPA 3050B EPA 6010B Mercury /07/09 08/07/09 METHOD EPA 7471A Molybdenum /10/09 08/11/09 EPA 3050B EPA 6010B Nickel /10/09 08/11/09 EPA 3050B EPA 6010B Selenium ND /10/09 08/11/09 EPA 3050B EPA 6010B Silver ND /10/09 08/11/09 EPA 3050B EPA 6010B Thallium ND /10/09 08/11/09 EPA 3050B EPA 6010B Vanadium /10/09 08/11/09 EPA 3050B EPA 6010B Zinc /10/09 08/11/09 EPA 3050B EPA 6010B ND= Not Detected RL= Reporting Limit Page 1 of of 108

117 Batch QC Report California Title 22 Metals Lab #: Location: 3229/3301 San Leandro Street Client: Treadwell & Rollo Prep: METHOD Project#: Analysis: EPA 7471A Analyte: Mercury Diln Fac: Type: BLANK Batch#: Lab ID: QC Prepared: 08/07/09 Matrix: Soil Analyzed: 08/07/09 Units: mg/kg Result RL ND ND= Not Detected RL= Reporting Limit Page 1 of of 108

118 Batch QC Report California Title 22 Metals Lab #: Location: 3229/3301 San Leandro Street Client: Treadwell & Rollo Prep: METHOD Project#: Analysis: EPA 7471A Analyte: Mercury Batch#: Matrix: Soil Prepared: 08/07/09 Units: mg/kg Analyzed: 08/07/09 Diln Fac: Type Lab ID Spiked Result RPD Lim BS QC BSD QC RPD= Relative Percent Difference Page 1 of of 108

119 Batch QC Report California Title 22 Metals Lab #: Location: 3229/3301 San Leandro Street Client: Treadwell & Rollo Prep: METHOD Project#: Analysis: EPA 7471A Analyte: Mercury Diln Fac: Field ID: ZZZZZZZZZZ Batch#: MSS Lab ID: Sampled: 08/03/09 Matrix: Soil Received: 08/04/09 Units: mg/kg Prepared: 08/07/09 Basis: as received Analyzed: 08/07/09 Type Lab ID MSS Result Spiked Result RPD Lim MS QC MSD QC * *= Value outside of QC limits; see narrative RPD= Relative Percent Difference Page 1 of of 108

120 Batch QC Report California Title 22 Metals Lab #: Location: 3229/3301 San Leandro Street Client: Treadwell & Rollo Prep: EPA 3050B Project#: Analysis: EPA 6010B Type: BLANK Diln Fac: Lab ID: QC Batch#: Matrix: Soil Prepared: 08/10/09 Units: mg/kg Analyzed: 08/11/09 Analyte Result RL Antimony ND 0.50 Arsenic ND 0.25 Barium ND 0.25 Beryllium ND 0.10 Cadmium ND 0.25 Chromium ND 0.25 Cobalt ND 0.25 Copper ND 0.26 Lead ND 0.25 Molybdenum ND 0.25 Nickel ND 0.25 Selenium ND 0.50 Silver ND 0.25 Thallium ND 0.50 Vanadium ND 0.25 Zinc ND 1.0 ND= Not Detected RL= Reporting Limit Page 1 of of 108

121 Batch QC Report California LUFT Metals Lab #: Location: 3229/3301 San Leandro Street Client: Treadwell & Rollo Prep: EPA 3050B Project#: Analysis: EPA 6010B Matrix: Soil Batch#: Units: mg/kg Prepared: 08/10/09 Diln Fac: Analyzed: 08/11/09 Type: BS Lab ID: QC Analyte Spiked Result Cadmium Chromium Lead Nickel Zinc Type: BSD Lab ID: QC Analyte Spiked Result RPD Lim Cadmium Chromium Lead Nickel Zinc RPD= Relative Percent Difference Page 1 of of 108

122 Batch QC Report California Title 22 Metals Lab #: Location: 3229/3301 San Leandro Street Client: Treadwell & Rollo Prep: EPA 3050B Project#: Analysis: EPA 6010B Matrix: Soil Batch#: Units: mg/kg Prepared: 08/10/09 Diln Fac: Analyzed: 08/11/09 Type: BS Lab ID: QC Analyte Spiked Result Antimony Arsenic Barium Beryllium Cadmium Chromium Cobalt Copper Lead Molybdenum Nickel Selenium Silver Thallium Vanadium Zinc Type: BSD Lab ID: QC Analyte Spiked Result RPD Lim Antimony Arsenic Barium Beryllium Cadmium Chromium Cobalt Copper Lead Molybdenum Nickel Selenium Silver Thallium Vanadium Zinc RPD= Relative Percent Difference Page 1 of of 108

123 Batch QC Report California LUFT Metals Lab #: Location: 3229/3301 San Leandro Street Client: Treadwell & Rollo Prep: EPA 3050B Project#: Analysis: EPA 6010B Field ID: ZZZZZZZZZZ Batch#: MSS Lab ID: Sampled: 08/03/09 Matrix: Soil Received: 08/05/09 Units: mg/kg Prepared: 08/10/09 Basis: as received Analyzed: 08/11/09 Diln Fac: Type: MS Lab ID: QC Analyte MSS Result Spiked Result Cadmium * Chromium Lead Nickel Zinc Type: MSD Lab ID: QC Analyte Spiked Result RPD Lim Cadmium * Chromium Lead * Nickel Zinc *= Value outside of QC limits; see narrative RPD= Relative Percent Difference Page 1 of of 108

124 Batch QC Report California Title 22 Metals Lab #: Location: 3229/3301 San Leandro Street Client: Treadwell & Rollo Prep: EPA 3050B Project#: Analysis: EPA 6010B Field ID: ZZZZZZZZZZ Batch#: MSS Lab ID: Sampled: 08/03/09 Matrix: Soil Received: 08/05/09 Units: mg/kg Prepared: 08/10/09 Basis: as received Analyzed: 08/11/09 Diln Fac: Type: MS Lab ID: QC Analyte MSS Result Spiked Result Antimony < Arsenic * Barium Beryllium * Cadmium * Chromium Cobalt * Copper Lead Molybdenum < * Nickel Selenium < * Silver NM Thallium < * Vanadium Zinc Type: MSD Lab ID: QC Analyte Spiked Result RPD Lim Antimony Arsenic * Barium Beryllium * Cadmium * Chromium Cobalt * Copper * * 28 Lead * Molybdenum * Nickel Selenium * Silver NM * 20 Thallium * Vanadium Zinc *= Value outside of QC limits; see narrative NM= Not Meaningful: Sample concentration > 4X spike concentration RPD= Relative Percent Difference Page 1 of of 108

125

126 Laboratory Job Number ANALYTICAL REPORT Treadwell & Rollo Project : th Street Location : 3229/3301 San Leandro Street Oakland, CA Level : II Sample ID Lab ID SLTR SLTR This data package has been reviewed for technical correctness and completeness. Release of this data has been authorized by the Laboratory Manager or the Manager's designee, as verified by the following signatures. The results contained in this report meet all requirements of NELAC and pertain only to those samples which were submitted for analysis. This report may be reproduced only in its entirety. Signature: Date: 08/26/2009 Project Manager NELAP # 01107CA 1 of 14

127 CASE NARRATIVE Laboratory number: Client: Treadwell & Rollo Project: Location: 3229/3301 San Leandro Street Request Date: 08/24/09 Samples Received: 08/06/09 This data package contains sample and QC results for two soil samples, requested for the above referenced project on 08/24/09. The samples were received cold and intact. TPH-Extractables by GC (EPA 8015B): was prepared outside of hold time; affected data was qualified with "b". No other analytical problems were encountered. Pesticides (EPA 8081B): All samples underwent sulfur cleanup using the copper option in EPA Method 3660B. All samples underwent florisil cleanup using EPA Method 3620C. Matrix spikes QC509144,QC (batch ) were not reported because the parent sample required a dilution that would have diluted out the spikes was prepared outside of hold time; affected data was qualified with "b". No other analytical problems were encountered. Page 1 of of 14

128 3 of 14

129 4 of 14

130 5 of 14

131 Total Extractable Hydrocarbons Lab #: Location: 3229/3301 San Leandro Street Client: Treadwell & Rollo Prep: EPA 3550B Project#: Analysis: EPA 8015B Field ID: SLTR Batch#: Matrix: Soil Sampled: 08/05/09 Units: mg/kg Received: 08/06/09 Basis: as received Prepared: 08/24/09 Diln Fac: Type: SAMPLE Analyzed: 08/26/09 Lab ID: Cleanup Method: EPA 3630C Analyte Result RL Diesel C10-C Y b 1.0 Motor Oil C24-C36 ND b 5.0 o-terphenyl 87 b Type: BLANK Analyzed: 08/25/09 Lab ID: QC Cleanup Method: EPA 3630C Analyte Result RL Diesel C10-C24 ND 1.0 Motor Oil C24-C36 ND 5.0 o-terphenyl Y= Sample exhibits chromatographic pattern which does not resemble standard b= See narrative ND= Not Detected RL= Reporting Limit Page 1 of of 14

132 Batch QC Report Total Extractable Hydrocarbons Lab #: Location: 3229/3301 San Leandro Street Client: Treadwell & Rollo Prep: EPA 3550B Project#: Analysis: EPA 8015B Type: LCS Diln Fac: Lab ID: QC Batch#: Matrix: Soil Prepared: 08/24/09 Units: mg/kg Analyzed: 08/25/09 Cleanup Method: EPA 3630C Analyte Spiked Result Diesel C10-C o-terphenyl Page 1 of of 14

133 Batch QC Report Total Extractable Hydrocarbons Lab #: Location: 3229/3301 San Leandro Street Client: Treadwell & Rollo Prep: EPA 3550B Project#: Analysis: EPA 8015B Field ID: ZZZZZZZZZZ Batch#: MSS Lab ID: Sampled: 08/12/09 Matrix: Soil Received: 08/12/09 Units: mg/kg Prepared: 08/24/09 Basis: as received Analyzed: 08/26/09 Diln Fac: Type: MS Cleanup Method: EPA 3630C Lab ID: QC Analyte MSS Result Spiked Result Diesel C10-C o-terphenyl Type: MSD Cleanup Method: EPA 3630C Lab ID: QC Analyte Spiked Result RPD Lim Diesel C10-C o-terphenyl RPD= Relative Percent Difference Page 1 of of 14

134 Minutes \\Lims\gdrive\ezchrom\Projects\GC14B\Data\237b013, B 9 of 14

135 Minutes \\Lims\gdrive\ezchrom\Projects\GC14B\Data\237b003, B 10 of 14

136 Minutes \\Lims\gdrive\ezchrom\Projects\GC14B\Data\237b004, B 11 of 14

137 Organochlorine Pesticides Lab #: Location: 3229/3301 San Leandro Street Client: Treadwell & Rollo Prep: EPA 3550B Project#: Analysis: EPA 8081B Field ID: SLTR Batch#: Lab ID: Sampled: 08/05/09 Matrix: Soil Received: 08/06/09 Units: ug/kg Prepared: 08/25/09 Basis: as received Analyzed: 08/25/09 Diln Fac: Cleanup Method: EPA 3620B Analyte Result RL alpha-bhc ND b 1.7 beta-bhc ND b 1.7 gamma-bhc ND b 1.7 delta-bhc ND b 1.7 Heptachlor ND b 1.7 Aldrin ND b 1.7 Heptachlor epoxide ND b 1.7 Endosulfan I ND b 1.7 Dieldrin ND b 3.3 4,4'-DDE ND b 3.3 Endrin ND b 3.3 Endosulfan II ND b 3.3 Endosulfan sulfate ND b 3.3 4,4'-DDD ND b 3.3 Endrin aldehyde ND b 3.3 4,4'-DDT ND b 3.3 alpha-chlordane ND b 1.7 gamma-chlordane ND b 1.7 Methoxychlor ND b 17 Toxaphene ND b 60 TCMX 68 b Decachlorobiphenyl 76 b b= See narrative ND= Not Detected RL= Reporting Limit Page 1 of of 14

138 Batch QC Report Organochlorine Pesticides Lab #: Location: 3229/3301 San Leandro Street Client: Treadwell & Rollo Prep: EPA 3550B Project#: Analysis: EPA 8081B Type: BLANK Diln Fac: Lab ID: QC Batch#: Matrix: Soil Prepared: 08/25/09 Units: ug/kg Analyzed: 08/25/09 Cleanup Method: EPA 3620B Analyte Result RL alpha-bhc ND 1.7 beta-bhc ND 1.7 gamma-bhc ND 1.7 delta-bhc ND 1.7 Heptachlor ND 1.7 Aldrin ND 1.7 Heptachlor epoxide ND 1.7 Endosulfan I ND 1.7 Dieldrin ND 3.3 4,4'-DDE ND 3.3 Endrin ND 3.3 Endosulfan II ND 3.3 Endosulfan sulfate ND 3.3 4,4'-DDD ND 3.3 Endrin aldehyde ND 3.3 4,4'-DDT ND 3.3 alpha-chlordane ND 1.7 gamma-chlordane ND 1.7 Methoxychlor ND 17 Toxaphene ND 60 TCMX Decachlorobiphenyl ND= Not Detected RL= Reporting Limit Page 1 of of 14

139 Batch QC Report Organochlorine Pesticides Lab #: Location: 3229/3301 San Leandro Street Client: Treadwell & Rollo Prep: EPA 3550B Project#: Analysis: EPA 8081B Type: LCS Diln Fac: Lab ID: QC Batch#: Matrix: Soil Prepared: 08/25/09 Units: ug/kg Analyzed: 08/25/09 Cleanup Method: EPA 3620B Analyte Spiked Result gamma-bhc Heptachlor Aldrin Dieldrin Endrin ,4'-DDT TCMX Decachlorobiphenyl Page 1 of of 14

140 Laboratory Job Number Subcontracted Products Maxxam Analytics 100 of 108

141 Attention: Micah Smith Curtis and Tompkins Ltd 2323 Fifth St Berkley, CA USA Your Project #: Site: 3229/3301 SAN LEANDRO STREET Your C.O.C. #: na Report Date: 2009/08/28 CERTIFICATE OF ANALYSIS MAXXAM JOB #: A9A2301 Received: 2009/08/11, 12:31 Sample Matrix: Soil # Samples Received: 1 Date Date Method Analyses Quantity Extracted Analyzed Laboratory Method Reference Dioxins/Furans in Soil (8290) (1) /08/ /08/25 BRL SOP EPA 8290 mod. MOISTURE 1 N/A 2009/08/17 CAM SOP McKeague 2nd ed 1978 (1) Soils are reported on a dry weight basis unless otherwise specified. Confirmatory runs for 2,3,7,8-TCDF are performed only if the primary result is greater than the RDL. U = Undetected at the limit of quantitation. J = Estimated concentration between the EDL & RDL. B = Blank Contamination. Q = One or more quality control criteria failed. Validated by : OWEN COSBY, BSc.C.Chem Supervisor, HRMS Services Maxxam Analytics Inc. is a NELAC accredited laboratory. Certificate # CANA001. Use of the NELAC logo however does not insure that Maxxam is accredited for all of the methods indicated. This certificate shall not be reproduced except in full, without the written approval of Maxxam Analytics Inc. Total cover pages: 1 Page 1 of of 108

142 Curtis and Tompkins Ltd Maxxam Job #: A9A2301 Client Project #: Report Date: 2009/08/28 Project name: 3229/3301 SAN LEANDRO STREET DIOXINS AND FURANS BY HRMS (SOIL) Maxxam ID DI4440 Sampling Date 2009/08/05 10:59 COC Number na TOXIC EQUIVALENCY # of Units SLTR EDL TEF (2005 WHO) TEQ(DL) Isomers QC Batch RDL 1,2,3,4,7,8-Hexa CDD * mg/kg J N/A ,2,3,4,7,8-Hexa CDF ** mg/kg J N/A ,2,3,6,7,8-Hexa CDD mg/kg J N/A ,2,3,6,7,8-Hexa CDF mg/kg J N/A ,2,3,7,8,9-Hexa CDD mg/kg J N/A ,2,3,7,8,9-Hexa CDF mg/kg J N/A ,2,3,7,8-Penta CDD mg/kg J N/A ,2,3,7,8-Penta CDF mg/kg U (1) N/A ,3,4,6,7,8-Hexa CDF mg/kg U (1) N/A ,3,7,8-Tetra CDD mg/kg J N/A ,3,7,8-Tetra CDF mg/kg J N/A ,3,4,7,8-Penta CDF mg/kg U (1) N/A ,2,3,4,6,7,8-Hepta CDD mg/kg J N/A ,2,3,4,6,7,8-Hepta CDF mg/kg U (1) N/A ,2,3,4,7,8,9-Hepta CDF mg/kg U N/A Total Hexa CDD mg/kg N/A N/A N/A N/A Total Hexa CDF mg/kg N/A N/A N/A N/A Total Hepta CDD mg/kg N/A N/A N/A N/A Total Hepta CDF mg/kg N/A N/A N/A N/A Octa CDD mg/kg N/A Octa CDF mg/kg J N/A Total Penta CDD mg/kg N/A N/A N/A N/A Total Penta CDF mg/kg N/A N/A N/A N/A Total Tetra CDD mg/kg N/A N/A N/A N/A Total Tetra CDF mg/kg N/A N/A N/A N/A TOTAL TOXIC EQUIVALENCY mg/kg N/A N/A N/A N/A N/A N/A Recovery (%) C HeptaCDD % 61 N/A N/A N/A N/A N/A N/A = Not Applicable RDL = Reportable Detection Limit EDL = Estimated Detection Limit QC Batch = Quality Control Batch * CDD = Chloro Dibenzo-p-Dioxin, ** CDF = Chloro Dibenzo-p-Furan TEF = Toxic Equivalency Factor, TEQ = Toxic Equivalency Quotient, The Total Toxic Equivalency (TEQ) value reported is the sum of Toxic Equivalent Quotients for the congeners tested. EDL = Estimated Detection Limit WHO(2005): The 2005 World Health Organization, Human and Mammalian Toxic Equivalency Factors for Dioxins and Dioxin-like Compounds ( 1 ) EMPC / NDR - Peak detected does not meet ratio criteria and has resulted in an elevated detection limit. Page 2 of of 108

143 Curtis and Tompkins Ltd Maxxam Job #: A9A2301 Client Project #: Report Date: 2009/08/28 Project name: 3229/3301 SAN LEANDRO STREET DIOXINS AND FURANS BY HRMS (SOIL) Maxxam ID DI4440 Sampling Date 2009/08/05 10:59 COC Number na TOXIC EQUIVALENCY # of Units SLTR EDL TEF (2005 WHO) TEQ(DL) Isomers QC Batch RDL C HeptaCDF ** % 52 N/A N/A N/A N/A N/A C HexaCDF % 55 N/A N/A N/A N/A N/A C HexaCDD * % 65 N/A N/A N/A N/A N/A C PentaCDD % 77 N/A N/A N/A N/A N/A C PentaCDF % 53 N/A N/A N/A N/A N/A C TetraCDD % 79 N/A N/A N/A N/A N/A C TetraCDF % 61 N/A N/A N/A N/A N/A C13-OCDD % 59 N/A N/A N/A N/A N/A N/A = Not Applicable RDL = Reportable Detection Limit QC Batch = Quality Control Batch * CDD = Chloro Dibenzo-p-Dioxin, ** CDF = Chloro Dibenzo-p-Furan TEF = Toxic Equivalency Factor, TEQ = Toxic Equivalency Quotient, The Total Toxic Equivalency (TEQ) value reported is the sum of Toxic Equivalent Quotients for the congeners tested. EDL = Estimated Detection Limit WHO(2005): The 2005 World Health Organization, Human and Mammalian Toxic Equivalency Factors for Dioxins and Dioxin-like Compounds Page 3 of of 108

144 Curtis and Tompkins Ltd Maxxam Job #: A9A2301 Client Project #: Report Date: 2009/08/28 Project name: 3229/3301 SAN LEANDRO STREET RESULTS OF ANALYSES OF SOIL Maxxam ID DI4440 Sampling Date 2009/08/05 10:59 COC Number na Units SLTR DL QC Batch MDL Moisture % RDL = Reportable Detection Limit QC Batch = Quality Control Batch Page 4 of of 108

145 Curtis and Tompkins Ltd Maxxam Job #: A9A2301 Client Project #: Report Date: 2009/08/28 Project name: 3229/3301 SAN LEANDRO STREET Test Summary Maxxam ID DI4440 Collected 2009/08/05 Sample ID SLTR Shipped Matrix Soil Received 2009/08/11 Test Description Instrumentation Batch Extracted Analyzed Analyst Dioxins/Furans in Soil (8290) HRMS/MS /08/ /08/25 OBC MOISTURE BAL N/A 2009/08/17 AC Page 5 of of 108

146 Curtis and Tompkins Ltd Maxxam Job #: A9A2301 Client Project #: Report Date: 2009/08/28 Project name: 3229/3301 SAN LEANDRO STREET GENERAL COMMENTS Results relate only to the items tested. Page 6 of of 108

147 Quality Assurance Report Maxxam Job Number: GA9A2301 Curtis and Tompkins Ltd Attention: Micah Smith Client Project #: P.O. #: Project name: 3229/3301 SAN LEANDRO STREET QA/QC Date Batch Analyzed Num Init QC Type Parameter yyyy/mm/dd Value %Recovery Units QC Limits OBC Spiked Blank C HeptaCDD 2005/08/26 48 % C HeptaCDF 2005/08/26 40 % C HexaCDF 2005/08/26 42 % C HexaCDD 2005/08/26 49 % C PentaCDD 2005/08/26 57 % C PentaCDF 2005/08/26 40 % C TetraCDD 2005/08/26 61 % C TetraCDF 2005/08/26 44 % C13-OCDD 2005/08/26 47 % ,3,7,8-Tetra CDD 2005/08/26 98 % ,2,3,7,8-Penta CDD 2005/08/ % ,2,3,4,7,8-Hexa CDD 2005/08/ % ,2,3,6,7,8-Hexa CDD 2005/08/ % ,2,3,7,8,9-Hexa CDD 2005/08/ % ,2,3,4,6,7,8-Hepta CDD 2005/08/ % Octa CDD 2005/08/26 97 % ,3,7,8-Tetra CDF 2005/08/26 95 % ,2,3,7,8-Penta CDF 2005/08/ % ,3,4,7,8-Penta CDF 2005/08/ % ,2,3,4,7,8-Hexa CDF 2005/08/ % ,2,3,6,7,8-Hexa CDF 2005/08/ % ,3,4,6,7,8-Hexa CDF 2005/08/ % ,2,3,7,8,9-Hexa CDF 2005/08/ % ,2,3,4,6,7,8-Hepta CDF 2005/08/ % ,2,3,4,7,8,9-Hepta CDF 2005/08/ % Octa CDF 2005/08/26 98 % Method Blank C HeptaCDD 2005/08/25 75 % C HeptaCDF 2005/08/25 66 % C HexaCDF 2005/08/25 73 % C HexaCDD 2005/08/25 81 % C PentaCDD 2005/08/ % C PentaCDF 2005/08/25 72 % C TetraCDD 2005/08/25 98 % C TetraCDF 2005/08/25 74 % C13-OCDD 2005/08/25 69 % ,3,7,8-Tetra CDD 2005/08/ EDL= mg/kg 1,2,3,7,8-Penta CDD 2005/08/ EDL= mg/kg (1) 1,2,3,4,7,8-Hexa CDD 2005/08/ EDL= mg/kg 1,2,3,6,7,8-Hexa CDD 2005/08/ EDL= mg/kg 1,2,3,7,8,9-Hexa CDD 2005/08/ EDL= mg/kg 1,2,3,4,6,7,8-Hepta CDD 2005/08/ EDL= mg/kg (1) Octa CDD 2005/08/ EDL= mg/kg Total Tetra CDD 2005/08/ EDL= mg/kg Total Penta CDD 2005/08/ EDL= mg/kg (1) Total Hexa CDD 2005/08/ , EDL= mg/kg Total Hepta CDD 2005/08/ EDL= mg/kg (1) 2,3,7,8-Tetra CDF 2005/08/ EDL= mg/kg 1,2,3,7,8-Penta CDF 2005/08/ EDL= mg/kg 2,3,4,7,8-Penta CDF 2005/08/ EDL= mg/kg 1,2,3,4,7,8-Hexa CDF 2005/08/ EDL= mg/kg (1) 1,2,3,6,7,8-Hexa CDF 2005/08/ EDL= mg/kg (1) 2,3,4,6,7,8-Hexa CDF 2005/08/ EDL= mg/kg (1) 1,2,3,7,8,9-Hexa CDF 2005/08/ EDL= mg/kg 1,2,3,4,6,7,8-Hepta CDF 2005/08/ EDL= mg/kg (1) 1,2,3,4,7,8,9-Hepta CDF 2005/08/ EDL= mg/kg (1) Page 7 of of 108

148 Quality Assurance Report (Continued) Maxxam Job Number: GA9A2301 Curtis and Tompkins Ltd Attention: Micah Smith Client Project #: P.O. #: Project name: 3229/3301 SAN LEANDRO STREET QA/QC Date Batch Analyzed Num Init QC Type Parameter yyyy/mm/dd Value %Recovery Units QC Limits OBC Method Blank Octa CDF 2005/08/ EDL= mg/kg Total Tetra CDF 2005/08/ EDL= mg/kg Total Penta CDF 2005/08/ , EDL= mg/kg Total Hexa CDF 2005/08/ , EDL= mg/kg Total Hepta CDF 2005/08/ EDL= mg/kg (1) Spiked Blank: A blank matrix to which a known amount of the analyte has been added. Used to evaluate analyte recovery. Method Blank: A blank matrix containing all reagents used in the analytical procedure. Used to identify laboratory contamination. : A pure or isotopically labeled compound whose behavior mirrors the analytes of interest. Used to evaluate extraction efficiency. ( 1 ) EMPC / NDR - Peak detected does not meet ratio criteria and has resulted in an elevated detection limit. Page 8 of of 108

149

150 Laboratory Job Number ANALYTICAL REPORT Treadwell & Rollo Project : th Street Location : 3229 San Leandro Street Oakland, CA Level : II Sample ID Lab ID SLTR ' SLTR ' This data package has been reviewed for technical correctness and completeness. Release of this data has been authorized by the Laboratory Manager or the Manager's designee, as verified by the following signature. The results contained in this report meet all requirements of NELAC and pertain only to those samples which were submitted for analysis. This report may be reproduced only in its entirety. Signature: Date: 09/21/2009 Project Manager NELAP # 01107CA 1 of 27

151 CASE NARRATIVE Laboratory number: Client: Treadwell & Rollo Project: Location: 3229 San Leandro Street Request Date: 09/09/09 Samples Received: 09/09/09 This data package contains sample and QC results for two soil samples, requested for the above referenced project on 09/09/09. The samples were received cold and intact. TPH-Purgeables and/or BTXE by GC (EPA 8015B): No analytical problems were encountered. TPH-Extractables by GC (EPA 8015B): No analytical problems were encountered. Volatile Organics by GC/MS (EPA 8260B): High surrogate recoveries were observed for toluene-d8 in SLTR ' (lab # ), the method blank for batch , and the MSD of SLTR ' (lab # ); no associated target analytes were detected in the sample. No other analytical problems were encountered. Metals (EPA 6010B and EPA 7471A): Low recovery was observed for antimony in the MSD for batch ; the parent sample was not a project sample, and the BS/BSD were within limits. High recoveries were observed for silver and arsenic in the MS/MSD for batch ; the BS/BSD were within limits. High RPD was observed for arsenic, copper, and antimony; the RPD was acceptable in the BS/BSD. No other analytical problems were encountered. Page 1 of of 27

152 3 of 27