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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: 11020E <br /> Project Number: R11B03 75 Hawthorne Street Reported: 03/08/11 15:07 <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 BlAO085-5035 TPHG-TPH-Purgeable Prepared&Analyzed:01/21/11 <br /> Purgeable Petroleum Hydrocarbons by EPA Method 8015C-Quality Control <br /> Blank(B1A0085-BLK1) <br /> TPH as Gasoline ND U 5 mg/kg <br /> wet <br /> Surrogate:a,a,a-Triiluorotoluene 10.3 12.5 82 75-119 <br /> LCS(B1A0085-BS1) <br /> TPH as Gasoline 47.2 5 mg/kg 50.0 94 56-136 200 <br /> wet <br /> Surrogate:a,a,a-Tris luorotoluene ll.l 12.5 89 75-119 <br /> Duplicate(B1A0085-DUPl) Source:1101025-17 <br /> TPH as Gasoline ND U 5.7 mg/kg ND 20 <br /> dry <br /> Surrogate:a,a,a-Triiluorotoluene 10.6 12.9 82 75-119 <br /> Batch BlAO093-3545A ASE/PFE-TPH-Extractable Prepared:01/24/11 Analyzed:01/28/11 <br /> Extractable Petroleum Hydrocarbons by EPA Method 8015B-Quality Control <br /> Blank(B1A0093-BLK1) <br /> TPH-Diesel Range Organics ND U 5 mg/kg <br /> wet <br /> TPH-Oil Range Organics ND U 20 " <br /> Surrogate:Hexacosane 5.63 5.00 113 41-148 <br /> LCS(B1A0093-BS1) <br /> TPH-Diesel Range Organics 45.4 5 mg/kg 50.0 91 59-110 200 <br /> wet <br /> Surrogate:Hexacosane 5.35 5.00 107 41-148 <br /> Matrix Spike(B1A0093-MS1) Source:1101025-02 <br /> TPH-Diesel Range Organics 46.5 6.1 mg/kg 61.4 ND 76 20-153 50 <br /> dry <br /> Surrogate:Hexacosane 5.60 6.14 91 41-148 <br /> Matrix Spike Dup(B1A0093-MSD1) Source:1101025-02 <br /> TPH-Diesel Range Organics 48.1 6.1 mg/kg 61.5 ND 78 20-153 3 50 <br /> dry <br /> Surrogate:Hexacosane 5.50 6.15 90 41-148 <br /> Batch BlAO107-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(B1A0107-BLKl) <br /> %Solids ND U 1 % <br /> Duplicate(B1A0107-DUPl) Source:1101025-09 <br /> 1101025 FINAL 03 08 11 1507 Page 7 of 9 <br />