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J00-0STgT0, 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: 11020C <br /> Project Number: R11B03 75 Hawthorne Street Reported: 03/08/11 12:48 <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 BlAO080-3520C CLLE-TPH-Extractable Prepared:01/20/11 Analyzed:01/24/11 <br /> Extractable Petroleum Hydrocarbons by EPA Method 8015B-Quality Control <br /> Blank(B1A0080-BLKl) <br /> TPH-Diesel Range Organics ND U 250 ug/L <br /> TPH-Oil Range Organics ND U 1,000 " <br /> Surrogate:Hezacosane 142 150 94 60-127 <br /> LCS(B1A0080-BSl) <br /> TPH-Diesel Range Organics 1,250 250 ug/L 1500 83 54-115 200 <br /> Surrogate:Hezacosane 150 150 100 60-127 <br /> Batch BlAO082-5030 P&T TPH-G-TPH-Purgeable Prepared&Analyzed:01/21/11 <br /> Purgeable Petroleum Hydrocarbons by EPA Method 8015C-Quality Control <br /> Blank(B1A0082-BLKI) <br /> TPH as Gasoline ND U 50 ug/L <br /> Surrogate a,a,a-Tris luorotoluene 119 125 95 76-121 <br /> LCS(B1A0082-BSI) <br /> TPH as Gasoline 476 50 ug/L 500 95 75-114 200 <br /> Surrogate:a,a,a-Trifluorotoluene 137 125 110 76-121 <br /> Matrix Spike(B1A0082-MS1) Source:1101023-01 <br /> TPH as Gasoline 491 50 ug/L 500 ND 98 71-114 11 <br /> Surrogate:a,a,a-Tris luorotoluene 121 125 97 76-111 <br /> Matrix Spike Dup(B1A0082-MSD1) Source:1101023-01 <br /> TPH as Gasoline 522 50 ug/L 500 ND 104 71-114 6 11 <br /> Surrogate:a,a,a-Tris luorotoluene 127 125 101 76-121 <br /> 1101023 FINAL 03 08 11 1248 Page 3 of 4 <br />