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Sherwood <br /> 8071 NORTH LANDER AVENUE <br /> Labs PO BOX 937 <br /> C o R P o R A r / 0 N HILMAR,CALIFORNIA 95324 <br /> 11/17/00 QUALITY CONTROL REPORT DHS Cert. 01400 _ <br /> Total Petroleum Hydrocarbons(TPH) Analysis <br /> ' Cla-ent: GEOLOGICAL TECHNICS, 19C. Data Recea.vgd: 1.1/15/00 <br /> 2741 RIVER RD Date Started. 11/15/00 <br /> ' MODESTO, CA 95351 Date Complete 11/16/00 <br /> ATTN. RAY KABLANOW <br /> Lab Report #: H0111508 Lab Sample #:PH0110554 <br /> L-n--ty Check. <br /> BTEX Benzene 0.9983 TPH Gasol=e 1.0000 <br /> ' Toluene 0.9995 TPH Diesel N/A <br /> Ethyl Benz 0.9978 Motor Oil N/A <br /> Xylenes 0.9987 TRPH (418 1) N/A <br /> MTBE N/A <br /> Std Y6 Repeatability MTBE Benzene Toluene Eth Benz Xylenes <br /> BTEX N/A 100 98 90 99 <br /> TPH Gasoline 100 TPH Diesel N/A <br /> TRPH (418.1) N/A Motor Oil N/A <br /> !lots'- spike Recover'-- NS MSD RPD <br /> ' MTBE N/A N/A N/A <br /> BTEX Benzene 99 95 4 <br /> Toluene 100 97 3 <br /> ' Ethyl Benz 92 91 1 <br /> Xylenes 97 91 6 <br /> TPH Gasoline 95 103 8 <br /> ' TPH Diesel N/A N/A N/A <br /> stethod al;; MTBE Benzene Toluene Eth Benz Xylenes <br /> BTEX N/A <.3 ug/L <.3 ug/L <.3 ug/L <.3 ug/L <br /> TPH Gasoline <50 ug/L Diesel/MO N/A TRPH(418 1) N/A <br /> ' Lab Control Sample % Recovery EPA Performance Acceptance Range <br /> BTEX Benzene 106 73.1 - 124 <br /> Toluene 88 73.6 - 120 <br /> Ethyl Benz 98 72.5 118 <br /> Xylenes 103 72.7 - 121 <br /> ' TPH Gasola.ne 94 82.4 - 117 <br /> TPH Diesel N/A N/A N/A <br /> TRPH (418.1) N/A N/A <br /> Nancy Biedenweg, Lab Director <br /> OFFICE (209)667-5258 FAX (209)667-2581 <br />