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J00-0SrgT0s United States Environmental Protection Agency <br /> Region 9 Laboratory <br /> °2 1337 S.46th Street, Building 201, Richmond, CA 94804 <br /> 44 PRo'�'�' Phone:(510)412-2300 Fax:(510)412-2302 <br /> Project Manager: Carolyn Douglas Brownfields and Site Assessment Section SDG: 11019D <br /> Project Number: R11B03 75 Hawthorne Street Reported: 03/08/11 12:37 <br /> Project: El Concilio Site#2 2011 TBA San Francisco CA,94105 <br /> Quality Control <br /> Qualifiers/ Quantitation Spike Source %REC RPD RPD <br /> Analyte Result CommentsLimit Units Level Result %REC Limits Limit <br /> Batch BlAO077-3545A ASE/PFE-TPH-Extractable Prepared:01/20/11 Analyzed:01/25/11 <br /> Extractable Petroleum Hydrocarbons by EPA Method 8015B-Quality Control <br /> Blank(B1A0077-BLK1) <br /> TPH-Diesel Range Organics ND U 5 mg/kg <br /> wet <br /> TPH-Oil Range Organics ND U 20 " <br /> Surrogate:Hexacosane 4.78 5.00 96 41-148 <br /> LCS(B1A0077-BSI) <br /> TPH-Diesel Range Organics 44.3 5 mg/kg 50.0 89 59-110 200 <br /> wet <br /> Surrogate:Hexacosane 4.88 5.00 98 41-148 <br /> Matrix Spike(B1A0077-MS1) Source:1101019-02 <br /> TPH-Diesel Range Organics 32 6.1 mg/kg 61.9 ND 52 20-153 50 <br /> dry <br /> Surrogate:Hexacosane 3.77 6.19 61 41-148 <br /> Matrix Spike Dup(B1A0077-MSD1) Source:1101019-02 <br /> TPH-Diesel Range Organics 34.1 6.1 mg/kg 61.9 ND 55 20-153 6 50 <br /> dry <br /> Surrogate:Hexacosane 3.62 6./9 59 41-148 <br /> Batch BIA0088-5035 TPHG-TPH-Purgeable Prepared:01/21/11 Analyzed:01/24/11 <br /> Purgeable Petroleum Hydrocarbons by EPA Method 8015C-Quality Control <br /> Blank(B1A0088-BLK1) <br /> TPH as Gasoline ND U 5 mg/kg <br /> wet <br /> Surrogate:a,a,a-Triiluorotoluene 9.90 12.5 79 75-119 <br /> LCS(B1A0088-BS1) <br /> TPH as Gasoline 44.7 5 mg/kg 50.0 89 56-136 200 <br /> wet <br /> Surrogate:a,a,a-Tris luorotoluene 10.3 12.5 82 75-119 <br /> Batch BIA0103-Solids,Dry Weight(Prep)-Solids,Dry Prepared:01/25/11 Analyzed:01/27/11 <br /> Weight Conventional Chemistry Parameters by APHA/EPA Methods-Quality Control <br /> Blank(B1A0103-BLKI) <br /> %Solids ND U 1 % <br /> Blank(B1A0103-BLK2) <br /> %Solids ND U 1 % <br /> Duplicate(B1A0103-DUPI) Source:1101019-03 <br /> %Solids 78 1 % 80 2 20 <br /> 1101019 FINAL 03 08 11 1237 Page 4 of 5 <br />