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Sherwood <br /> Labs bs 8071 NORTH LANDER AVENUE <br /> CORPORA T 1 0 IV <br /> PO BOX 937 <br /> HIWAR,CALIFORNIA 95324 <br /> 1 07/30/01 QUALITY CONTROL REPORT IMS Cr wt. 01400 <br /> Total Petroleum hydrocarbons(TPI) Analysis <br />' Client: GEOLOGICAL TECHNICS, INC. Date Received- 07/26/01 <br /> 2741 RIVER RD. Date Started. 07/26/01 <br />' MODESTO, CA 95351 Date Complete: 07/30/01 <br /> ATTN: RAY KABLANOW <br /> 1 Lab ReporH107260• Lab Sample #:PH1,070908 <br /> Linearity Check- <br /> BTEX Benzene 0 9986 TPH Gasoline 0.9995 <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 N/A <br /> Std $ Repeatability MTBE Benzene Toluene Eth Benz Xylenes <br /> BTEX N/A 101 104 100 103 <br /> TPH Gasoline 94 TPH Diesel N/A <br /> TRPH (418.1) N/A Motor Oil N/A <br /> Hatrsx Spike Racoveries MS MSD RPD <br /> MTBE N/A N/A N/A <br /> BTEX Benzene 113 108 5 <br /> Toluene 105 102 3 <br />' Ethyl Benz 98 97 1 <br /> Xylenes 106 103 3 <br /> TPH Gasoline 90 89 1 <br /> 1 TPH Diesel N/A N/A N/A <br /> Method Blank MTBE Benzene Toluene Eth Benz Xylenes <br />' BTEX N/A <3 ug/Kg <3 ug/Kg <3 ug/Kg <3 ug/Kg <br /> TPH Gasoline <1 mg/Kg Diesel/M0 N/A TRPH(418.1) N/A <br /> Lab Control Sample % Recovery EPA Performance Acceptance Range <br /> BTEX Benzene 101 73.1 124 <br /> Toluene 99 73.5 - 1.20 <br /> Ethyl Benz 107 72.5 - 118 <br /> Xylenes 110 72.7 - 121 <br /> TPH Gasoline 92 82.4 117 <br /> TPH Diesel N/A N/A N/A <br /> . ,TRRH (41(8�.1)� N/A 74oN/A <br /> -'" ab D eato5c /al <br /> OFFICE (209) 667-5258 FAX (209)667-2581 <br />