Sampling equipment was decontaminated in between sampling locations using a Liquinox

Transcription

1 February 23, 2016 Lee Sims Oakland Unified School District 955 High Street Oakland, California Re: Soil & Asphalt Sampling Burbank Preschool th Avenue, Oakland, CA Dear Ms. Sims, This report presents the findings of the soil and asphalt sampling conducted by ACC Environmental Consultants, Inc. (ACC) at th Avenue in Oakland, California (Site). Fill material and shallow soil beneath the existing asphalt pavement will be hauled off-site as part of proposed playground and parking lot upgrades. The purpose of this investigation was to assess the soil and fill material with regard to disposal at a Class I or Class II waste facility, and to assess whether the existing asphalt pavement at the site contains asbestos. SAMPLE METHODOLGY On February 11, 2016 ACC collected samples at four representative sampling locations (Figure 1) based on the discretion of the school principal (school was in session at the time of sampling). At each location a circular saw was used to core eight-inch-diameter openings in the asphalt. The asphalt pavement ranged from approximately two to five inches in thickness. Fill material beneath the asphalt pavement consisted of brown gravel measuring approximately six inches thick at sample location B1, approximately two inches thick at sample location B2, approximately eight inches thick at sample location B3, and approximately four inches thick at sample location B4. For purposes of waste characterization, representative samples of fill material and underlying soil were sampled at each location by advancing a hand auger to the approximate desired sample depth and collecting the sample from the barrel of the hand auger using dedicated glass jars and stainless steel sleeves subsequently capped with plastic sheeting and tight-fitting plastic caps. Following collection, samples were labeled, logged on a chain-of-custody form and stored on ice pending transport to the laboratory following chain-of-custody protocol. Sampling equipment was decontaminated in between sampling locations using a Liquinox Northern California: 7977 Capwell Drive, Suite 100 Oakland, CA (510) Fax (510) Southern California: 1545 Wilshire Blvd., Suite 500, Los Angeles, CA (213) Fax (213)

2 th Avenue ACC Project Number Oakland, California Page 2 solution and double rinsed with distilled water. New nitrile gloves were worn and changed frequently (minimum once per sampling location) to prevent potential cross contamination. Sample locations were backfilled to surface grade with fast-setting concrete slurry. SOIL ANALYTICAL RESULTS Soil samples were delivered to in Pittsburg, California and Forensic Analytical in Hayward, California following chain-of-custody protocol. The complete laboratory reports and chain-of-custody are attached as Appendix A. The fill material and underlying soil encountered at each location was composited by the laboratory into respective 4:1 composite samples (one 4:1 composite sample of fill material and one 4:1 composite of underlying soil). Soil samples were analyzed for the following constituents: Total Petroleum Hydrocarbons specified as gasoline-range (TPH-g), diesel-range (TPHd) and motor oil-range (TPH-mo) by method 8015B; Volatile Organic Compounds (VOCs) by method 8260B; CAM 17 (Title 22) Metals by method 6020; Organochlorine Pesticides (OCPs) by method 8081; Polychlorinated Biphenyls (PCBs) by method 8082; Asbestos by PLM; and Solubility Threshold Limit Concentration (STLC), as warranted based on DTSC hazardous waste criteria for metals. VOCs, PCBs, OCPs and asbestos were not detected during this sampling event. TPH-g, TPH-d and TPH-mo: TPH-d and TPH-mo were detected up to respective concentrations of 2.8, 110 and 190 milligrams per kilogram (mg/kg). DTSC hazardous waste criteria are not published for these chemical compounds. The detected TPH concentrations will not likely be considered significant by accepting facilities with regard to disposal at a Class I or Class II disposal facility. CAM 17 (Title 22) Metals: Metals concentrations did not exceed corresponding total threshold limit concentrations for hazardous waste criteria and generally do not appear elevated above background concentrations. Chromium was detected up to 94 mg/kg. Per DTSC hazardous waste criteria, samples with detected chromium concentrations exceeding 50 mg/kg were analyzed by the California Solubility Threshold Limit Concentration (STLC) method. Chromium STLC results were up to 0.18 milligrams per liter (mg/l), which does not exceed the DTSC hazardous waste threshold of 5.0 mg/l. Based on Federal hazardous waste criteria, toxicity characteristic leaching procedure (TCLP) analyses were not warranted. ASPHALT ANALYTICAL RESULTS Asphalt samples were collected at each sampling location and delivered to Forensic Analytical in Hayward, California following chain-of-custody protocol to be analyzed for asbestos by PLM. Northern California: 7977 Capwell Drive, Suite 100 Oakland, CA (510) Fax (510) Southern California: 1545 Wilshire Blvd., Suite 500, Los Angeles, CA (213) Fax (213)

3 th Avenue ACC Project Number Oakland, California Page 3 Two layers of asphalt were encountered at sample location B1 and representative samples from each layer at that location were submitted for analyses. Asbestos was not detected in the asphalt samples with a reporting limit of 1%. No traces of asbestos (<1%) were noted by the laboratory. CONCLUSIONS ACC s opinion is that soil and fill material hauled off-site as part of the proposed playground and parking lot upgrades is non-hazardous waste and will be accepted by a Class II waste facility. Asbestos was not detected in the asphalt samples. LIMITATIONS The service performed by ACC has been conducted in a manner consistent with the levels of care and skill ordinarily exercised by members of our profession currently practicing under similar conditions in the area. No other warranty, expressed or implied, is made. The conclusions presented in this report are professional opinions based on the indicated data described in this report and applicable regulations and guidelines currently in place. They are intended only for the purpose, site, and project indicated. Opinions and recommendations presented herein apply to site conditions existing at the time of our study. Site conditions could change over time due to unforeseen circumstances. ACC has included analytical results from a state-certified laboratory, which performs analyses according to procedures defined by the U.S. Environmental Protection Agency and the state of California. ACC shall not be responsible for laboratory errors. We appreciate the opportunity to assist you with this project. If you have any questions regarding this report please contact (510) x110 or isutherland@accenv.com. Sincerely, ACC ENVIRONMENTAL CONSULTANTS, INC. Ian Sutherland, PG Project Manager Attachments: Figure 1 Soil Sampling Locations Appendix A Complete Laboratory Reports and Chain-of-Custody Northern California: 7977 Capwell Drive, Suite 100 Oakland, CA (510) Fax (510) Southern California: 1545 Wilshire Blvd., Suite 500, Los Angeles, CA (213) Fax (213)

4 FIGURE 1 SAMPLING LOCATIONS

5 B4 B3 B2 B1 = SOIL SAMPLING LOCATION & ID BASEMAP SOURCE: GOOGLE EARTH ( ) APPROXIMATE SCALE (FEET) SOIL SAMPLING LOCATIONS ( ) th Avenue Burbank Preschool OAKLAND, CALIFORNIA DATE: PROJECT: FIGURE 1 ALL DIMENSIONS & LOCATIONS APPROXIMATE

6 APPENDIX A LABORATORY REPORTS & COC

7 Analytical Report WorkOrder: Report Created for: ACC Environmental Consultants, Inc Capwell Drive, Suite 100 Oakland, CA Project Contact: Project P.O.: Project Name: Ian Sutherland ; Burbank Preschool Project Received: 02/16/2016 Analytical Report reviewed & approved for release on 02/23/2016 by: Angela Rydelius, Laboratory Manager The report shall not be reproduced except in full, without the written approval of the laboratory. The analytical results relate only to the items tested. s reported conform to the most current NELAP standards, where applicable, unless otherwise stated in the case narrative Willow Pass Rd. Pittsburg, CA TEL: (877) FAX: (925) NELAP: 4033ORELAP ELAP: 1644 ISO/IEC: 17025:2005 WSDE: C ADEC: UST-098 UCMR3

8 Glossary of Terms & Qualifier Definitions Client: ACC Environmental Consultants, Inc. Project: ; Burbank Preschool Glossary Abbreviation 95% Interval 95% Confident Interval DF Dilution Factor DI WET (DISTLC) Waste Extraction Test using DI water DISS Dissolved (direct analysis of 0.45 µm filtered and acidified water sample) DLT Dilution Test DUP Duplicate EDL Estimated Detection Limit ITEF International Toxicity Equivalence Factor Laboratory Control Sample MB Method Blank MB % Rec % Recovery of Surrogate in Method Blank, if applicable MDL Method Detection Limit ML Minimum Level of Quantitation MS Matrix Spike MSD Matrix Spike Duplicate N/A Not Applicable ND Not detected at or above the indicated MDL or RL NR Data Not Reported due to matrix interference or insufficient sample amount. PDS Post Digestion Spike PDSD Post Digestion Spike Duplicate PF Prep Factor RD Relative Difference RL Reporting Limit (The RL is the lowest calibration standard in a multipoint calibration.) RPD Relative Percent Deviation RRT Relative Retention Time SPK Val Spike Value SPKRef Val Spike Reference Value SPLP Synthetic Precipitation Leachate Procedure ST Sorbent Tube TCLP Toxicity Characteristic Leachate Procedure TEQ Toxicity Equivalents WET (STLC) Waste Extraction Test (Soluble Threshold Limit Concentration)

9 Client: ACC Environmental Consultants, Inc. Project: ; Burbank Preschool Glossary of Terms & Qualifier Definitions Analytical Qualifiers S a3 c1 d7 e3 e7 Surrogate spike recovery outside accepted recovery limits sample diluted due to high organic content. surrogate recovery outside of the control limits due to the dilution of the sample. strongly aged gasoline or diesel range compounds are significant in the TPH(g) chromatogram aged diesel is significant oil range compounds are significant Quality Control Qualifiers F1 F8 MS/MSD recovery and/or RPD is out of acceptance criteria; validated the prep batch. MS/MSD recovery and/or RPD was out of acceptance criteria; PDS validated the prep batch. If PDS recovery was out of acceptance criteria, DLT validated the prep batch.

10 Analytical Report Client: ACC Environmental Consultants, Inc. Date Received: 2/16/16 13:05 Date Prepared: 2/16/16 Project: ; Burbank Preschool Extraction Method: SW3550B Analytical Method: SW8081A/8082 mg/kg Organochlorine Pesticides (Basic Target List) + PCBs Client ID Lab ID Matrix Date Collected Instrument Batch ID B1,2,3,4-Fill A Soil 02/11/2016 GC Analytes RL DF Date Analyzed Aldrin ND /17/ :43 a-bhc ND /17/ :43 b-bhc ND /17/ :43 d-bhc ND /17/ :43 g-bhc ND /17/ :43 Chlordane (Technical) ND /17/ :43 a-chlordane ND /17/ :43 g-chlordane ND /17/ :43 p,p-ddd ND /17/ :43 p,p-dde ND /17/ :43 p,p-ddt ND /17/ :43 Dieldrin ND /17/ :43 Endosulfan I ND /17/ :43 Endosulfan II ND /17/ :43 Endosulfan sulfate ND /17/ :43 Endrin ND /17/ :43 Endrin aldehyde ND /17/ :43 Endrin ketone ND /17/ :43 Heptachlor ND /17/ :43 Heptachlor epoxide ND /17/ :43 Hexachlorobenzene ND /17/ :43 Hexachlorocyclopentadiene ND /17/ :43 Methoxychlor ND /17/ :43 Toxaphene ND /17/ :43 Aroclor1016 ND /17/ :43 Aroclor1221 ND /17/ :43 Aroclor1232 ND /17/ :43 Aroclor1242 ND /17/ :43 Aroclor1248 ND /17/ :43 Aroclor1254 ND /17/ :43 Aroclor1260 ND /17/ :43 PCBs, total ND /17/ :43 Surrogates REC (%) Qualifiers Limits Decachlorobiphenyl 148 S /17/ :43 Analyst(s): SS Analytical Comments: a3,c1 (Cont.) Angela Rydelius, Lab Manager

11 Analytical Report Client: ACC Environmental Consultants, Inc. Date Received: 2/16/16 13:05 Date Prepared: 2/16/16 Project: ; Burbank Preschool Extraction Method: SW3550B Analytical Method: SW8081A/8082 mg/kg Organochlorine Pesticides (Basic Target List) + PCBs Client ID Lab ID Matrix Date Collected Instrument Batch ID B1,2,3,4-Soil A Soil 02/11/2016 GC Analytes RL DF Date Analyzed Aldrin ND /17/ :21 a-bhc ND /17/ :21 b-bhc ND /17/ :21 d-bhc ND /17/ :21 g-bhc ND /17/ :21 Chlordane (Technical) ND /17/ :21 a-chlordane ND /17/ :21 g-chlordane ND /17/ :21 p,p-ddd ND /17/ :21 p,p-dde ND /17/ :21 p,p-ddt ND /17/ :21 Dieldrin ND /17/ :21 Endosulfan I ND /17/ :21 Endosulfan II ND /17/ :21 Endosulfan sulfate ND /17/ :21 Endrin ND /17/ :21 Endrin aldehyde ND /17/ :21 Endrin ketone ND /17/ :21 Heptachlor ND /17/ :21 Heptachlor epoxide ND /17/ :21 Hexachlorobenzene ND /17/ :21 Hexachlorocyclopentadiene ND /17/ :21 Methoxychlor ND /17/ :21 Toxaphene ND /17/ :21 Aroclor1016 ND /17/ :21 Aroclor1221 ND /17/ :21 Aroclor1232 ND /17/ :21 Aroclor1242 ND /17/ :21 Aroclor1248 ND /17/ :21 Aroclor1254 ND /17/ :21 Aroclor1260 ND /17/ :21 PCBs, total ND /17/ :21 Surrogates REC (%) Limits Decachlorobiphenyl /17/ :21 Analyst(s): SS Angela Rydelius, Lab Manager

12 Analytical Report Client: ACC Environmental Consultants, Inc. Date Received: 2/16/16 13:05 Date Prepared: 2/16/16 Project: ; Burbank Preschool Extraction Method: SW5030B Analytical Method: SW8260B mg/kg Volatile Organics by P&T and GC/MS (Basic Target List) Client ID Lab ID Matrix Date Collected Instrument Batch ID B1,2,3,4-Fill A Soil 02/11/2016 GC Analytes RL DF Date Analyzed Acetone ND /19/ :31 tert-amyl methyl ether (TAME) ND /19/ :31 Benzene ND /19/ :31 Bromobenzene ND /19/ :31 Bromochloromethane ND /19/ :31 Bromodichloromethane ND /19/ :31 Bromoform ND /19/ :31 Bromomethane ND /19/ :31 2-Butanone (MEK) ND /19/ :31 t-butyl alcohol (TBA) ND /19/ :31 n-butyl benzene ND /19/ :31 sec-butyl benzene ND /19/ :31 tert-butyl benzene ND /19/ :31 Carbon Disulfide ND /19/ :31 Carbon Tetrachloride ND /19/ :31 Chlorobenzene ND /19/ :31 Chloroethane ND /19/ :31 Chloroform ND /19/ :31 Chloromethane ND /19/ :31 2-Chlorotoluene ND /19/ :31 4-Chlorotoluene ND /19/ :31 Dibromochloromethane ND /19/ :31 1,2-Dibromo-3-chloropropane ND /19/ :31 1,2-Dibromoethane (EDB) ND /19/ :31 Dibromomethane ND /19/ :31 1,2-Dichlorobenzene ND /19/ :31 1,3-Dichlorobenzene ND /19/ :31 1,4-Dichlorobenzene ND /19/ :31 Dichlorodifluoromethane ND /19/ :31 1,1-Dichloroethane ND /19/ :31 1,2-Dichloroethane (1,2-DCA) ND /19/ :31 1,1-Dichloroethene ND /19/ :31 cis-1,2-dichloroethene ND /19/ :31 trans-1,2-dichloroethene ND /19/ :31 1,2-Dichloropropane ND /19/ :31 1,3-Dichloropropane ND /19/ :31 2,2-Dichloropropane ND /19/ :31 (Cont.) Angela Rydelius, Lab Manager

13 Analytical Report Client: ACC Environmental Consultants, Inc. Date Received: 2/16/16 13:05 Date Prepared: 2/16/16 Project: ; Burbank Preschool Extraction Method: SW5030B Analytical Method: SW8260B mg/kg Volatile Organics by P&T and GC/MS (Basic Target List) Client ID Lab ID Matrix Date Collected Instrument Batch ID B1,2,3,4-Fill A Soil 02/11/2016 GC Analytes RL DF Date Analyzed 1,1-Dichloropropene ND /19/ :31 cis-1,3-dichloropropene ND /19/ :31 trans-1,3-dichloropropene ND /19/ :31 Diisopropyl ether (DIPE) ND /19/ :31 Ethylbenzene ND /19/ :31 Ethyl tert-butyl ether (ETBE) ND /19/ :31 Freon 113 ND /19/ :31 Hexachlorobutadiene ND /19/ :31 Hexachloroethane ND /19/ :31 2-Hexanone ND /19/ :31 Isopropylbenzene ND /19/ :31 4-Isopropyl toluene ND /19/ :31 Methyl-t-butyl ether (MTBE) ND /19/ :31 Methylene chloride ND /19/ :31 4-Methyl-2-pentanone (MIBK) ND /19/ :31 Naphthalene ND /19/ :31 n-propyl benzene ND /19/ :31 Styrene ND /19/ :31 1,1,1,2-Tetrachloroethane ND /19/ :31 1,1,2,2-Tetrachloroethane ND /19/ :31 Tetrachloroethene ND /19/ :31 Toluene ND /19/ :31 1,2,3-Trichlorobenzene ND /19/ :31 1,2,4-Trichlorobenzene ND /19/ :31 1,1,1-Trichloroethane ND /19/ :31 1,1,2-Trichloroethane ND /19/ :31 Trichloroethene ND /19/ :31 Trichlorofluoromethane ND /19/ :31 1,2,3-Trichloropropane ND /19/ :31 1,2,4-Trimethylbenzene ND /19/ :31 1,3,5-Trimethylbenzene ND /19/ :31 Vinyl Chloride ND /19/ :31 Xylenes, Total ND /19/ :31 (Cont.) Angela Rydelius, Lab Manager

14 Analytical Report Client: ACC Environmental Consultants, Inc. Date Received: 2/16/16 13:05 Date Prepared: 2/16/16 Project: ; Burbank Preschool Extraction Method: SW5030B Analytical Method: SW8260B mg/kg Volatile Organics by P&T and GC/MS (Basic Target List) Client ID Lab ID Matrix Date Collected Instrument Batch ID B1,2,3,4-Fill A Soil 02/11/2016 GC Analytes RL DF Date Analyzed Surrogates REC (%) Limits Dibromofluoromethane /19/ :31 Toluene-d /19/ :31 4-BFB /19/ :31 Benzene-d /19/ :31 Ethylbenzene-d /19/ :31 1,2-DCB-d /19/ :31 Analyst(s): KF (Cont.) Angela Rydelius, Lab Manager

15 Analytical Report Client: ACC Environmental Consultants, Inc. Date Received: 2/16/16 13:05 Date Prepared: 2/16/16 Project: ; Burbank Preschool Extraction Method: SW5030B Analytical Method: SW8260B mg/kg Volatile Organics by P&T and GC/MS (Basic Target List) Client ID Lab ID Matrix Date Collected Instrument Batch ID B1,2,3,4-Soil A Soil 02/11/2016 GC Analytes RL DF Date Analyzed Acetone ND /18/ :22 tert-amyl methyl ether (TAME) ND /18/ :22 Benzene ND /18/ :22 Bromobenzene ND /18/ :22 Bromochloromethane ND /18/ :22 Bromodichloromethane ND /18/ :22 Bromoform ND /18/ :22 Bromomethane ND /18/ :22 2-Butanone (MEK) ND /18/ :22 t-butyl alcohol (TBA) ND /18/ :22 n-butyl benzene ND /18/ :22 sec-butyl benzene ND /18/ :22 tert-butyl benzene ND /18/ :22 Carbon Disulfide ND /18/ :22 Carbon Tetrachloride ND /18/ :22 Chlorobenzene ND /18/ :22 Chloroethane ND /18/ :22 Chloroform ND /18/ :22 Chloromethane ND /18/ :22 2-Chlorotoluene ND /18/ :22 4-Chlorotoluene ND /18/ :22 Dibromochloromethane ND /18/ :22 1,2-Dibromo-3-chloropropane ND /18/ :22 1,2-Dibromoethane (EDB) ND /18/ :22 Dibromomethane ND /18/ :22 1,2-Dichlorobenzene ND /18/ :22 1,3-Dichlorobenzene ND /18/ :22 1,4-Dichlorobenzene ND /18/ :22 Dichlorodifluoromethane ND /18/ :22 1,1-Dichloroethane ND /18/ :22 1,2-Dichloroethane (1,2-DCA) ND /18/ :22 1,1-Dichloroethene ND /18/ :22 cis-1,2-dichloroethene ND /18/ :22 trans-1,2-dichloroethene ND /18/ :22 1,2-Dichloropropane ND /18/ :22 1,3-Dichloropropane ND /18/ :22 2,2-Dichloropropane ND /18/ :22 (Cont.) Angela Rydelius, Lab Manager

16 Analytical Report Client: ACC Environmental Consultants, Inc. Date Received: 2/16/16 13:05 Date Prepared: 2/16/16 Project: ; Burbank Preschool Extraction Method: SW5030B Analytical Method: SW8260B mg/kg Volatile Organics by P&T and GC/MS (Basic Target List) Client ID Lab ID Matrix Date Collected Instrument Batch ID B1,2,3,4-Soil A Soil 02/11/2016 GC Analytes RL DF Date Analyzed 1,1-Dichloropropene ND /18/ :22 cis-1,3-dichloropropene ND /18/ :22 trans-1,3-dichloropropene ND /18/ :22 Diisopropyl ether (DIPE) ND /18/ :22 Ethylbenzene ND /18/ :22 Ethyl tert-butyl ether (ETBE) ND /18/ :22 Freon 113 ND /18/ :22 Hexachlorobutadiene ND /18/ :22 Hexachloroethane ND /18/ :22 2-Hexanone ND /18/ :22 Isopropylbenzene ND /18/ :22 4-Isopropyl toluene ND /18/ :22 Methyl-t-butyl ether (MTBE) ND /18/ :22 Methylene chloride ND /18/ :22 4-Methyl-2-pentanone (MIBK) ND /18/ :22 Naphthalene ND /18/ :22 n-propyl benzene ND /18/ :22 Styrene ND /18/ :22 1,1,1,2-Tetrachloroethane ND /18/ :22 1,1,2,2-Tetrachloroethane ND /18/ :22 Tetrachloroethene ND /18/ :22 Toluene ND /18/ :22 1,2,3-Trichlorobenzene ND /18/ :22 1,2,4-Trichlorobenzene ND /18/ :22 1,1,1-Trichloroethane ND /18/ :22 1,1,2-Trichloroethane ND /18/ :22 Trichloroethene ND /18/ :22 Trichlorofluoromethane ND /18/ :22 1,2,3-Trichloropropane ND /18/ :22 1,2,4-Trimethylbenzene ND /18/ :22 1,3,5-Trimethylbenzene ND /18/ :22 Vinyl Chloride ND /18/ :22 Xylenes, Total ND /18/ :22 (Cont.) Angela Rydelius, Lab Manager

17 Analytical Report Client: ACC Environmental Consultants, Inc. Date Received: 2/16/16 13:05 Date Prepared: 2/16/16 Project: ; Burbank Preschool Extraction Method: SW5030B Analytical Method: SW8260B mg/kg Volatile Organics by P&T and GC/MS (Basic Target List) Client ID Lab ID Matrix Date Collected Instrument Batch ID B1,2,3,4-Soil A Soil 02/11/2016 GC Analytes RL DF Date Analyzed Surrogates REC (%) Limits Dibromofluoromethane /18/ :22 Toluene-d /18/ :22 4-BFB /18/ :22 Benzene-d /18/ :22 Ethylbenzene-d /18/ :22 1,2-DCB-d /18/ :22 Analyst(s): KF Angela Rydelius, Lab Manager

18 Analytical Report Client: ACC Environmental Consultants, Inc. Date Received: 2/16/16 13:05 Date Prepared: 2/16/16 Project: ; Burbank Preschool Extraction Method: SW3050B Analytical Method: SW6020 mg/kg CAM / CCR 17 Metals Client ID Lab ID Matrix Date Collected Instrument Batch ID B1,2,3,4-Fill A Soil 02/11/2016 ICP-MS Analytes RL DF Date Analyzed Antimony /17/ :33 Arsenic /17/ :33 Barium /17/ :33 Beryllium ND /17/ :33 Cadmium /17/ :33 Chromium /17/ :33 Cobalt /17/ :33 Copper /17/ :33 Lead /17/ :33 Mercury /17/ :33 Molybdenum /17/ :33 Nickel /17/ :33 Selenium ND /17/ :33 Silver /17/ :33 Thallium ND /17/ :33 Vanadium /17/ :33 Zinc /17/ :33 Surrogates REC (%) Limits Terbium /17/ :33 Analyst(s): AC (Cont.) Angela Rydelius, Lab Manager

19 Analytical Report Client: ACC Environmental Consultants, Inc. Date Received: 2/16/16 13:05 Date Prepared: 2/16/16 Project: ; Burbank Preschool Extraction Method: SW3050B Analytical Method: SW6020 mg/kg CAM / CCR 17 Metals Client ID Lab ID Matrix Date Collected Instrument Batch ID B1,2,3,4-Soil A Soil 02/11/2016 ICP-MS Analytes RL DF Date Analyzed Antimony ND /18/ :08 Arsenic /18/ :08 Barium /18/ :08 Beryllium ND /18/ :08 Cadmium ND /18/ :08 Chromium /18/ :08 Cobalt /18/ :08 Copper /18/ :08 Lead /18/ :08 Mercury /18/ :08 Molybdenum ND /18/ :08 Nickel /18/ :08 Selenium ND /18/ :08 Silver ND /18/ :08 Thallium ND /18/ :08 Vanadium /18/ :08 Zinc /18/ :08 Surrogates REC (%) Limits Terbium /18/ :08 Analyst(s): BBO Angela Rydelius, Lab Manager

20 Analytical Report Client: ACC Environmental Consultants, Inc. Date Received: 2/16/16 13:05 Date Prepared: 2/16/16 Project: ; Burbank Preschool Extraction Method: SW5030B Analytical Method: SW8021B/8015Bm mg/kg Gasoline Range (C6-C12) Volatile Hydrocarbons as Gasoline with BTEX and MTBE Client ID Lab ID Matrix Date Collected Instrument Batch ID B1,2,3,4-Fill A Soil 02/11/2016 GC Analytes RL DF Date Analyzed TPH(g) /19/ :25 MTBE ND /19/ :25 Benzene ND /19/ :25 Toluene ND /19/ :25 Ethylbenzene ND /19/ :25 Xylenes ND /19/ :25 Surrogates REC (%) Limits 2-Fluorotoluene /19/ :25 Analyst(s): IA Analytical Comments: d7 Client ID Lab ID Matrix Date Collected Instrument Batch ID B1,2,3,4-Soil A Soil 02/11/2016 GC Analytes RL DF Date Analyzed TPH(g) ND /19/ :55 MTBE ND /19/ :55 Benzene ND /19/ :55 Toluene ND /19/ :55 Ethylbenzene ND /19/ :55 Xylenes ND /19/ :55 Surrogates REC (%) Limits 2-Fluorotoluene /19/ :55 Analyst(s): IA Angela Rydelius, Lab Manager

21 Analytical Report Client: ACC Environmental Consultants, Inc. Date Received: 2/16/16 13:05 Date Prepared: 2/16/16 Project: ; Burbank Preschool Extraction Method: SW3550B/3630C Analytical Method: SW8015B mg/kg Total Extractable Petroleum Hydrocarbons with Silica Gel Clean-Up Client ID Lab ID Matrix Date Collected Instrument Batch ID B1,2,3,4-Fill A Soil 02/11/2016 GC6B Analytes RL DF Date Analyzed TPH-Diesel (C10-C23) /17/ :14 TPH-Motor Oil (C18-C36) /17/ :14 Surrogates REC (%) Limits C /17/ :14 Analyst(s): TK Analytical Comments: e3,e7 Client ID Lab ID Matrix Date Collected Instrument Batch ID B1,2,3,4-Soil A Soil 02/11/2016 GC9b Analytes RL DF Date Analyzed TPH-Diesel (C10-C23) ND /19/ :31 TPH-Motor Oil (C18-C36) ND /19/ :31 Surrogates REC (%) Limits C /19/ :31 Analyst(s): TK Angela Rydelius, Lab Manager

22 Client: Project: Date Prepared: 2/16/16 Date Analyzed: 2/18/16 Instrument: Matrix: ACC Environmental Consultants, Inc. GC23 Soil ; Burbank Preschool Quality Control Report BatchID: Extraction Method: SW3550B Analytical Method: SW8081A/8082 Sample ID: mg/kg MB/ AMS/MSD QC Summary Report for SW8081A/8082 Analyte MB RL SPK Val MB SS Limits Aldrin ND a-bhc ND b-bhc ND d-bhc ND g-bhc ND Chlordane (Technical) ND a-chlordane ND g-chlordane ND p,p-ddd ND p,p-dde ND p,p-ddt ND Dieldrin ND Endosulfan I ND Endosulfan II ND Endosulfan sulfate ND Endrin ND Endrin aldehyde ND Endrin ketone ND Heptachlor ND Heptachlor epoxide ND Hexachlorobenzene ND Hexachlorocyclopentadiene ND Methoxychlor ND Toxaphene ND Aroclor1016 ND Aroclor1221 ND Aroclor1232 ND Aroclor1242 ND Aroclor1248 ND Aroclor1254 ND Aroclor1260 ND PCBs, total ND Surrogate Recovery Decachlorobiphenyl (Cont.) QA/QC Officer

23 Client: Project: Date Prepared: 2/16/16 Date Analyzed: 2/18/16 Instrument: Matrix: ACC Environmental Consultants, Inc. GC23 Soil ; Burbank Preschool Quality Control Report BatchID: Extraction Method: SW3550B Analytical Method: SW8081A/8082 Sample ID: mg/kg MB/ AMS/MSD QC Summary Report for SW8081A/8082 Analyte MS MSD SPK Val SPKRef Val MS MSD MS/MSD Limits RPD RPD Limit Aldrin ND g-bhc ND p,p-ddt ND Dieldrin ND Endrin ND Heptachlor ND Surrogate Recovery Decachlorobiphenyl QA/QC Officer

24 Client: Project: Date Prepared: 2/16/16 Date Analyzed: 2/16/16-2/17/16 Instrument: Matrix: ACC Environmental Consultants, Inc. GC16 Soil ; Burbank Preschool Quality Control Report BatchID: Extraction Method: SW5030B Analytical Method: SW8260B Sample ID: mg/kg MB/ AMS/MSD QC Summary Report for SW8260B Analyte MB RL SPK Val MB SS Limits Acetone ND tert-amyl methyl ether (TAME) ND Benzene ND Bromobenzene ND Bromochloromethane ND Bromodichloromethane ND Bromoform ND Bromomethane ND Butanone (MEK) ND t-butyl alcohol (TBA) ND n-butyl benzene ND sec-butyl benzene ND tert-butyl benzene ND Carbon Disulfide ND Carbon Tetrachloride ND Chlorobenzene ND Chloroethane ND Chloroform ND Chloromethane ND Chlorotoluene ND Chlorotoluene ND Dibromochloromethane ND ,2-Dibromo-3-chloropropane ND ,2-Dibromoethane (EDB) ND Dibromomethane ND ,2-Dichlorobenzene ND ,3-Dichlorobenzene ND ,4-Dichlorobenzene ND Dichlorodifluoromethane ND ,1-Dichloroethane ND ,2-Dichloroethane (1,2-DCA) ND ,1-Dichloroethene ND cis-1,2-dichloroethene ND trans-1,2-dichloroethene ND ,2-Dichloropropane ND ,3-Dichloropropane ND ,2-Dichloropropane ND (Cont.) QA/QC Officer

25 Client: Project: Date Prepared: 2/16/16 Date Analyzed: 2/16/16-2/17/16 Instrument: Matrix: ACC Environmental Consultants, Inc. GC16 Soil ; Burbank Preschool Quality Control Report BatchID: Extraction Method: SW5030B Analytical Method: SW8260B Sample ID: mg/kg MB/ AMS/MSD QC Summary Report for SW8260B Analyte MB RL SPK Val MB SS Limits 1,1-Dichloropropene ND cis-1,3-dichloropropene ND trans-1,3-dichloropropene ND Diisopropyl ether (DIPE) ND Ethylbenzene ND Ethyl tert-butyl ether (ETBE) ND Freon 113 ND Hexachlorobutadiene ND Hexachloroethane ND Hexanone ND Isopropylbenzene ND Isopropyl toluene ND Methyl-t-butyl ether (MTBE) ND Methylene chloride ND Methyl-2-pentanone (MIBK) ND Naphthalene ND n-propyl benzene ND Styrene ND ,1,1,2-Tetrachloroethane ND ,1,2,2-Tetrachloroethane ND Tetrachloroethene ND Toluene ND ,2,3-Trichlorobenzene ND ,2,4-Trichlorobenzene ND ,1,1-Trichloroethane ND ,1,2-Trichloroethane ND Trichloroethene ND Trichlorofluoromethane ND ,2,3-Trichloropropane ND ,2,4-Trimethylbenzene ND ,3,5-Trimethylbenzene ND Vinyl Chloride ND Xylenes, Total ND (Cont.) QA/QC Officer

26 Client: Project: Date Prepared: 2/16/16 Date Analyzed: 2/16/16-2/17/16 Instrument: Matrix: ACC Environmental Consultants, Inc. GC16 Soil ; Burbank Preschool Quality Control Report BatchID: Extraction Method: SW5030B Analytical Method: SW8260B Sample ID: mg/kg MB/ AMS/MSD QC Summary Report for SW8260B Analyte MB RL SPK Val MB SS Limits Surrogate Recovery Dibromofluoromethane Toluene-d BFB Benzene-d Ethylbenzene-d ,2-DCB-d Analyte MS MSD SPK Val SPKRef Val MS MSD MS/MSD Limits RPD RPD Limit tert-amyl methyl ether (TAME) ND Benzene ND t-butyl alcohol (TBA) ND Chlorobenzene ND ,2-Dibromoethane (EDB) ND ,2-Dichloroethane (1,2-DCA) ND ,1-Dichloroethene ND Diisopropyl ether (DIPE) ND Ethyl tert-butyl ether (ETBE) ND Methyl-t-butyl ether (MTBE) ND Toluene ND Trichloroethene ND Surrogate Recovery Dibromofluoromethane Toluene-d BFB Benzene-d Ethylbenzene-d ,2-DCB-d QA/QC Officer

27 Client: Project: Date Prepared: 2/16/16 Date Analyzed: 2/17/16 Instrument: Matrix: ACC Environmental Consultants, Inc. ICP-MS3 Soil ; Burbank Preschool Quality Control Report BatchID: Extraction Method: SW3050B Analytical Method: SW6020 Sample ID: QC Summary Report for Metals mg/kg MB/ AMS/MSD APDS Analyte MB RL SPK Val MB SS Limits Antimony ND Arsenic ND Barium ND Beryllium ND Cadmium ND Chromium ND Cobalt ND Copper ND Lead ND Mercury ND Molybdenum ND Nickel ND Selenium ND Silver ND Thallium ND Vanadium ND Zinc ND Surrogate Recovery Terbium (Cont.) QA/QC Officer

28 Client: Project: Date Prepared: 2/16/16 Date Analyzed: 2/17/16 Instrument: Matrix: ACC Environmental Consultants, Inc. ICP-MS3 Soil ; Burbank Preschool Quality Control Report BatchID: Extraction Method: SW3050B Analytical Method: SW6020 Sample ID: QC Summary Report for Metals mg/kg MB/ AMS/MSD APDS Analyte MS MSD SPK Val SPKRef Val MS MSD MS/MSD Limits RPD RPD Limit Antimony ND Arsenic Barium ,F Beryllium ND Cadmium ND Chromium Cobalt Copper Lead Mercury ND Molybdenum ND Nickel ,F Selenium ND Silver ND Thallium ND Vanadium Zinc Surrogate Recovery Terbium Analyte PDS SPK Val SPKRef Val PDS PDS Limits Barium Nickel QA/QC Officer

29 Client: Project: Date Prepared: 2/16/16 Date Analyzed: 2/17/16 Instrument: Matrix: ACC Environmental Consultants, Inc. GC19 Soil ; Burbank Preschool Quality Control Report BatchID: Extraction Method: SW5030B Analytical Method: SW8021B/8015Bm Sample ID: mg/kg MB/ AMS/MSD QC Summary Report for SW8021B/8015Bm Analyte MB RL SPK Val MB SS Limits TPH(btex) ND MTBE ND Benzene ND Toluene ND Ethylbenzene ND Xylenes ND Surrogate Recovery 2-Fluorotoluene Analyte MS MSD SPK Val SPKRef Val MS MSD MS/MSD Limits RPD RPD Limit TPH(btex) ND 0.60 ND 72 0,F MTBE ND 0.10 ND 53,F1 50,F Benzene ND 68,F1 58,F Toluene ND 70 63,F Ethylbenzene ND 75 68,F Xylenes ND Surrogate Recovery 2-Fluorotoluene QA/QC Officer

30 Client: Date Prepared: 2/16/16 Date Analyzed: 2/16/16 Instrument: Matrix: Project: ACC Environmental Consultants, Inc. GC39A, GC39B Soil ; Burbank Preschool Quality Control Report BatchID: Extraction Method: SW3550B/3630C Analytical Method: SW8015B Sample ID: mg/kg MB/ AMS/MSD QC Report for SW8015B with Silica Gel Clean-Up Analyte MB RL SPK Val MB SS Limits TPH-Diesel (C10-C23) ND TPH-Motor Oil (C18-C36) ND Surrogate Recovery C Analyte MS MSD SPK Val SPKRef Val MS MSD MS/MSD Limits RPD RPD Limit TPH-Diesel (C10-C23) ND ,F Surrogate Recovery C QA/QC Officer

31 1534 Willow Pass Rd Pittsburg, CA (925) CHAIN-OF-CUSTODY RECORD Page ClientCode: ACCE 1 of 1 WaterTrax WriteOn EDF Excel EQuIS HardCopy ThirdParty J-flag Report to: Ian Sutherland ACC Environmental Consultants, Inc Capwell Drive, Suite 100 Oakland, CA (510) FAX: (510) isutherland@accenv.com cc/3rd Party: PO: ProjectNo: ; Burbank Preschool Bill to: Accounts Payable ACC Environmental Consultants, Inc Capwell Drive, Suite 100 Oakland, CA Requested TATs: 1 day; 5 days; Date Received: 02/12/2016 Date Logged: 02/16/2016 Requested Tests (See legend below) Lab ID Client ID Matrix Collection Date Hold B1,2,3,4-Fill Soil 2/11/2016 A A A A A A A A B1,2,3,4-Soil Soil 2/11/2016 A A A A A A A A A Test Legend: PCB_S B_S _S 4 CAM17MS_TTLC_S 5 CRMS_STLC_S 6 G-MBTEX_S 7 STLC_MSEXTRACTONLY 8 TCLP_MSEXTRACTONLY 9 TPH(DMO)WSG_S Prepared by: Maria Venegas The following SampIDs: 001A, 002A contain testgroup. Comments: STLC Cr added to 002 2/22/16 1D TAT NOTE: Soil samples are discarded 60 days after results are reported unless other arrangements are made (Water samples are 30 days). Hazardous samples will be returned to client or disposed of at client expense.

32 WORK ORDER SUMMARY Client Name: ACC ENVIRONMENTAL CONSULTANTS, INC. Project: ; Burbank Preschool Comments: STLC Cr added to 002 2/22/16 1D TAT QC Level: LEVEL 2 Client Contact: Ian Sutherland Contact's isutherland@accenv.com Work Order: Date Logged: 2/16/2016 WaterTrax WriteOn EDF Excel Fax HardCopy ThirdParty J-flag Lab ID Client ID Matrix Test Name Containers Bottle & Preservative Dechlorinated Collection Date /Composites & Time TAT Sediment Content Hold SubOut A B1,2,3,4-Fill Soil Multi-Range TPH(g,d,mo) w/ S.G. 4 / (4:1) 8OZ GJ 2/11/ days Clean-Up TCLP Extraction 5 days* STLC Extraction 5 days* SW6020 (CAM 17) 5 days SW8270C (SVOCs) 5 days SW8260B (VOCs) 5 days SW8081A/8082 (OC Pesticides+PCBs) 5 days A B1,2,3,4-Soil Soil TCLP Extraction 4 / (4:1) Stainless Steel tube 2"x3" 2/11/ days* STLC Extraction 5 days* Multi-Range TPH(g,d,mo) w/ S.G. Clean-Up SW6020 (Chromium) (STLC) 5 days 1 day* SW6020 (CAM 17) 5 days SW8270C (SVOCs) 5 days SW8260B (VOCs) 5 days SW8081A/8082 (OC Pesticides+PCBs) 5 days NOTES: - STLC and TCLP extractions require 2 days to complete; therefore, all TATs begin after the extraction is completed (i.e., One-day TAT yields results in 3 days from sample submission). - MAI assumes that all material present in the provided sampling container is considered part of the sample - MAI does not exclude any material from the sample prior to sample preparation unless requested in writing by the client. Page 1 of 1

33

34 Sample Receipt Checklist Client Name: ACC Environmental Consultants, Inc. Project Name: ; Burbank Preschool WorkOrder : Matrix: Soil Carrier: Bernie Cummins (MAI Courier) Date and Time Received: 2/12/ :10 Date Logged: 2/16/2016 Received by: Maria Venegas Logged by: Maria Venegas Chain of Custody (COC) Information Chain of custody present? Yes No Chain of custody signed when relinquished and received? Yes No Chain of custody agrees with sample labels? Yes No Sample IDs noted by Client on COC? Date and Time of collection noted by Client on COC? Sampler's name noted on COC? Yes Yes Yes No No No Sample Receipt Information Custody seals intact on shipping container/cooler? Yes No NA Shipping container/cooler in good condition? Yes No Samples in proper containers/bottles? Yes No Sample containers intact? Yes No Sufficient sample volume for indicated test? Yes No Sample Preservation and Hold Time (HT) Information All samples received within holding time? Yes No Sample/Temp Blank temperature Temp: 3.6 C NA Water - VOA vials have zero headspace / no bubbles? Yes No NA Sample labels checked for correct preservation? Yes No ph acceptable upon receipt (Metal: <2; 522: <4; 218.7: >8)? Yes No NA Samples Received on Ice? Yes No (Ice Type: WET ICE ) UCMR3 Samples: Total Chlorine tested and acceptable upon receipt for EPA 522? Yes No NA Free Chlorine tested and acceptable upon receipt for EPA 218.7, 300.1, 537, 539? Yes No NA * NOTE: If the "No" box is checked, see comments below. Comments:

35 Analytical Report WorkOrder: A Report Created for: ACC Environmental Consultants, Inc Capwell Drive, Suite 100 Oakland, CA Project Contact: Project P.O.: Project Name: Ian Sutherland ; Burbank Preschool Project Received: 02/16/2016 Analytical Report reviewed & approved for release on 02/23/2016 by: Angela Rydelius, Laboratory Manager The report shall not be reproduced except in full, without the written approval of the laboratory. The analytical results relate only to the items tested. s reported conform to the most current NELAP standards, where applicable, unless otherwise stated in the case narrative Willow Pass Rd. Pittsburg, CA TEL: (877) FAX: (925) NELAP: 4033ORELAP ELAP: 1644 ISO/IEC: 17025:2005 WSDE: C ADEC: UST-098 UCMR3

36 Client: ACC Environmental Consultants, Inc. Project: ; Burbank Preschool Glossary Abbreviation Glossary of Terms & Qualifier Definitions 95% Interval 95% Confident Interval DF Dilution Factor DI WET (DISTLC) Waste Extraction Test using DI water DISS Dissolved (direct analysis of 0.45 µm filtered and acidified water sample) DLT Dilution Test DUP Duplicate EDL Estimated Detection Limit ITEF International Toxicity Equivalence Factor Laboratory Control Sample MB Method Blank MB % Rec % Recovery of Surrogate in Method Blank, if applicable MDL Method Detection Limit ML Minimum Level of Quantitation MS Matrix Spike MSD Matrix Spike Duplicate N/A Not Applicable ND Not detected at or above the indicated MDL or RL NR Data Not Reported due to matrix interference or insufficient sample amount. PDS Post Digestion Spike PDSD Post Digestion Spike Duplicate PF Prep Factor RD Relative Difference RL Reporting Limit (The RL is the lowest calibration standard in a multipoint calibration.) RPD Relative Percent Deviation RRT Relative Retention Time SPK Val Spike Value SPKRef Val Spike Reference Value SPLP Synthetic Precipitation Leachate Procedure ST Sorbent Tube TCLP Toxicity Characteristic Leachate Procedure TEQ Toxicity Equivalents WET (STLC) Waste Extraction Test (Soluble Threshold Limit Concentration)

37 Client: ACC Environmental Consultants, Inc. Project: ; Burbank Preschool Glossary of Terms & Qualifier Definitions Analytical Qualifiers S a3 c1 d7 e3 e7 Surrogate spike recovery outside accepted recovery limits sample diluted due to high organic content. surrogate recovery outside of the control limits due to the dilution of the sample. strongly aged gasoline or diesel range compounds are significant in the TPH(g) chromatogram aged diesel is significant oil range compounds are significant Quality Control Qualifiers F1 F8 MS/MSD recovery and/or RPD is out of acceptance criteria; validated the prep batch. MS/MSD recovery and/or RPD was out of acceptance criteria; PDS validated the prep batch. If PDS recovery was out of acceptance criteria, DLT validated the prep batch.

38 Analytical Report Client: ACC Environmental Consultants, Inc. Date Received: 2/16/16 13:05 Date Prepared: 2/17/16 Project: ; Burbank Preschool Extraction Method: CA Title 22 Analytical Method: SW6020 mg/l STLC Metals Client ID Lab ID Matrix Date Collected Instrument Batch ID B1,2,3,4-Soil A Soil 02/11/2016 ICP-MS Analytes RL DF Date Analyzed Chromium /22/ :02 Analyst(s): DVH Angela Rydelius, Lab Manager

39 Client: Date Prepared: 2/17/16 Date Analyzed: 2/22/16 Instrument: Matrix: Project: ACC Environmental Consultants, Inc. ICP-MS3 Soil ; Burbank Preschool Quality Control Report BatchID: Extraction Method: CA Title 22 Analytical Method: SW6020 Sample ID: mg/l MB/ B15-001AMS/MSD QC Summary Report for Metals (STLC) Analyte MB RL SPK Val MB SS Limits Chromium ND Analyte MS MSD SPK Val SPKRef Val MS MSD MS/MSD Limits RPD RPD Limit Chromium QA/QC Officer

40 1534 Willow Pass Rd Pittsburg, CA (925) CHAIN-OF-CUSTODY RECORD Page A ClientCode: ACCE 1 of 1 WaterTrax WriteOn EDF Excel Fax HardCopy ThirdParty J-flag Report to: Ian Sutherland ACC Environmental Consultants, Inc Capwell Drive, Suite 100 Oakland, CA (510) FAX: (510) isutherland@accenv.com cc/3rd Party: PO: ProjectNo: ; Burbank Preschool Bill to: Accounts Payable ACC Environmental Consultants, Inc Capwell Drive, Suite 100 Oakland, CA Requested TAT: 1 day; Date Received: 02/12/2016 Date Logged: 02/16/2016 Date Add-On: 02/22/2016 Requested Tests (See legend below) Lab ID Client ID Matrix Collection Date Hold B1,2,3,4-Soil Soil 2/11/2016 A Test Legend: 1 CRMS_STLC_S Project Manager: Prepared by: Maria Venegas Add-On Prepared By: Jena Alfaro Comments: STLC Cr added to 002 2/22/16 1D TAT NOTE: Soil samples are discarded 60 days after results are reported unless other arrangements are made (Water samples are 30 days). Hazardous samples will be returned to client or disposed of at client expense.

41 WORK ORDER SUMMARY Client Name: ACC ENVIRONMENTAL CONSULTANTS, INC. Project: ; Burbank Preschool Comments: STLC Cr added to 002 2/22/16 1D TAT QC Level: LEVEL 2 Client Contact: Ian Sutherland Contact's isutherland@accenv.com Work Order: Date Logged: 2/16/2016 Date Add-On: 2/22/2016 Lab ID Client ID Matrix Test Name Containers Bottle & Preservative Collection Date /Composites & Time TAT Sediment Content Hold SubOut A B1,2,3,4-Soil Soil SW6020 (Chromium) (STLC) 4 / (4:1) Stainless Steel tube 2"x3" 2/11/ day* NOTES: - STLC and TCLP extractions require 2 days to complete; therefore, all TATs begin after the extraction is completed (i.e., One-day TAT yields results in 3 days from sample submission). - MAI assumes that all material present in the provided sampling container is considered part of the sample - MAI does not exclude any material from the sample prior to sample preparation unless requested in writing by the client. Page 1 of 1

42

43 Final Report ACC Environmental Consultants Project Manager 7977 Capwell Dr., Suite 100 Oakland, CA Bulk Asbestos Analysis (EPA Method 600/R , Visual Area Estimation) Client ID: Report Number: Date Received: Date Analyzed: Date Printed: First Reported: 1117 B /11/16 02/19/16 02/19/16 02/19/16 Job ID/Site: Burbank Preschool, th Street, Oakland FALI Job ID: 1117 Date(s) Collected: 02/11/2016 Total Samples Submitted: Total Samples Analyzed: 7 7 Sample ID Lab Number B1-A Layer: Black Cementitious Tar Total Composite Values of Fibrous Components: Cellulose (Trace) B1-A Layer: Black Cementitious Tar Total Composite Values of Fibrous Components: Cellulose (Trace) B2-A Layer: Black Cementitious Tar Total Composite Values of Fibrous Components: Cellulose (Trace) B3-A Layer: Black Cementitious Tar Total Composite Values of Fibrous Components: Cellulose (Trace) B4-A Layer: Black Cementitious Tar Total Composite Values of Fibrous Components: Cellulose (Trace) Fill - Composite Layer: Brown Soil Total Composite Values of Fibrous Components: Cellulose (Trace) Soil - Composite Layer: Brown Soil Total Composite Values of Fibrous Components: Cellulose (Trace) Asbestos Type Asbestos (ND) Asbestos (ND) Asbestos (ND) Asbestos (ND) Asbestos (ND) Asbestos (ND) Asbestos (ND) Percent in Layer ND ND ND ND ND ND ND Asbestos Type Percent in Layer Asbestos Type Percent in Layer 3777 Depot Road, Suite 409, Hayward, CA / Telephone: (510) (800) 827-FASI / Fax: (510) of 2