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Sherwood <br /> Labs 8071 NORTH LANDER AVENUE <br /> coF? PoR ,ar / oN <br /> PO BOX 937 <br />' HILMAR,CALIFORNIA 95324 <br /> 08/0$/01 QUALITY CONTROL REPO= DHq Cart. 01-d00 <br />' Total Petroleum Hydrocarbons(TPH) Analysis <br /> Client: GEOLOGICAL TECHNICS, INC Date Received: 07/27/01 <br /> 2741 RIVER RD Date Started: 07/30/01 <br /> MODESTO, CA 95351 Date Complete: 08/03/01 <br /> ATTN: MIKE NIEDdI <br /> Lab Repor H107300. Lab Sample #:PH1070983-PRIO70986 <br /> Linearity C", )c <br /> BTEX Benzene 0.9986 TPH Gasoline 0 9996 <br /> Toluene 0„9996 TPH Diesel N/A <br /> Ethyl Benz 0.9993 Motor Oil N/A <br /> Xylenes 0.9997 TRPH (418 1) N/A <br /> MTBE 0.9997 <br /> stet % Repeatabilxty MTHE Benzene Toluene Eth Benz Xylenes <br /> BTEX 104 97 102 98 104 <br /> TPH Gasolane 95 TPH Diesel N/A <br /> TRPH (418.1) N/A Maxtor Oil N/A <br /> K[atrix Spike Recoveries MS MSD RPD <br /> MTBE 117 108 8 <br /> STEX Benzene 115 107 7 <br /> Toluene 115 104 10 <br /> ' Ethyl Benz 109 104 5 <br /> Xylenes 111 108 3 <br /> TPH Gasoline 98 102 4 <br /> 1 TPH Diesel N/A N/A N/A <br /> _Method_ blank MTBE Benzene Toluene Eth Benz Xylenes <br /> BTEX <50 ug/Kg <3 ug/Kg <3 ug/Kg <3 ug/Kg <3 ug/Xg <br /> TPH Gasoline <1 mg/Kg Diesel/Mo N/A TRPH(418.1) N/A <br />' Lab Control sample % Recovery I EPA Performance Acceptance Range <br /> BTEX Benzene 97 73.1 - 124 <br />' Toluene 97 73.6 - 120 <br /> Ethyl Benz 97 72.5 118 <br /> Xylenes 103 72.7 - 121 <br /> TPH Gasoline 101 82.4 - 117 <br /> TPH Diesel N/A N/A N/A <br /> • TRPH (418.1) N/A N/A <br /> ,/01 <br /> :. <br /> Nancy Bedenweg, 2DFxrectox�' <br /> OFFICE (209)667-5258 FAX (209)667-2581 <br />