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Rpr 13 01 04: 48a DELTECH GEOTECHMICRL (209) 847-7744 p. 3 <br /> Sherwood <br /> Labs 8071 NORTH LANDER AVENUE <br /> • <br />' <br /> CORP ORA TION PQ BOX 937 <br /> HILMAR CALIFORNIA 95324 <br /> 03/14/01 QUALITY CONTROL REPORT DHS Cert. 01400 <br /> Total petroleum Hydrocarbons(TPH) Analysis <br />' - Client: DEL-TECH Date Reoeived 03/09/01 <br /> 10624 OLIVE AVENUE Date Started. 03/12/01 <br /> OAKDALE, CA 95361 Date Complete: 03/14/01 <br /> 1 ATTN DON LIGHT <br /> Lab Report # H1030803 Lab Sample #!PH1030344-PH1030358 <br /> Linearity Check <br />' BTEX Benzene 0.9992 TPH Gasoline 0 9992 <br /> Toluene 0.9992 TPH Diesel N/A <br /> Ethyl Benz 0.9994 Mortar Oil N/A <br /> Xylenes 1.0000 TRPH (416.1) N/A <br /> MTSE 0.9998 <br /> &td F6 Repeatahilsty MTBE Benzene Toluene Eth Benz xylenes <br /> BTEX 111 110 105 97 109 <br /> TPH Gasoline 102 TPH Diesel N/A <br /> . TRPH (418 1) N/A Motor Oil N/A <br /> Matrix Spike Rano--x -R M5 MSD RPD <br />' MTBE *Matrix Interference <br /> BTEX Benzene 107 97 10 <br /> Toluene 107 100 7 <br />' Ethyl Benz 108 99 9 <br /> xylenes 110 103 7 <br /> TRH Gasol=e 97 95 2 <br /> TPH Diesel. N/A N/A N/A <br /> Method Blank MTBE Benzene Toluene Eth Benz Xylenes <br />' BTEX <2 ug/L <.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 5k Recuvwry EPA Performance Acceptance Range <br /> BTEX Benzene 104 73.1 124 <br /> Toluene 96 73 6 - 120 <br />' Ethyl Benz 106 72.5 = 118 <br /> xylenes 116 72.7 121 <br /> TPH Gasolxne 105 82.4 _ 117 <br />' TPH Diesel N/A N/A - N/A <br /> 18 1) N/A N/A <br /> N y Biedesiwecl�I��bp Da rector <br />' OFFICE (209)667-5258 FAX (209)667-2581 <br />