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Sherwood <br /> Labs 8071 NORTH LANDER AVEN�]E <br /> C O R P O R A T I O N PO BOX 937 <br /> HILMAR,CALIFORNIA 95324 <br /> 11/29/00 QUALITY CONTROL REPORT DHS Cert. 01400 <br /> Total Petroleum Hydrooarbons(TPH) Analysis <br /> Client: GEOLOGICAL TECHNICS, INC. Date Received: 11/27/00 <br /> 2741 RIVER RD. Date Started- 11/27/00 <br />' MODESTO, CA 95351 Date Complete- 11/29/00 <br /> ATTN: RAY KABLANOW <br /> Lab Report 0 H0112701 Lab Sample OtPHO110875-PH0110884 <br /> FL -ty Check <br /> BTEX Benzene 0.9994 TPH Gasoline 1.0000 <br /> Toluene 0-9998 TPH Diesel N/A <br /> Ethyl Benz 0.9992 Motor Oil N/A <br /> Xylenes 0-9995 TRPH (418.1) N/A <br /> XTBE 0_9995 <br /> Btd % Repeatabllsty MTBE Benzene Toluene Eth Benz Xylenes <br /> BTEX 111 102 106 97 99 <br /> TPH Ga.solxne 95 TPH Diesel N/A <br /> TRPH (418.1) N/A Motor Oil N/A <br /> -,7t;,x Spike Reccverieer MS MSD RPD , <br /> MTBE 104 102 2 <br />' BTEX Benzene 98 101 3 <br /> Toluene 97 98 1 <br /> Ethyl Benz Be 96 9 <br /> Xylenes 100 100 0 <br /> TPH Gasoline 95 103 8 <br /> TPH Diesel N/A N/A N/A <br /> edethod Blank MTBE Benzene Toluene Eth Benz Xylenes <br />' BTEX <50 ug/Kg <3 ug/Kg <3 ug/Kg <3 ug/Kg <3 ug/Kg <br /> TPH Gasoline <1 mg/Kg Diesel/MO N/A TRPH(418.1) N/A <br />' �.ab Control Sample % Recovery EPA Performance Acceptance Range <br /> BTEX Benzene 103 73.1 - 124 <br />' Toluene 100 73.6 - 120 <br /> Ethyl Benz 96 72.5 118 <br /> Xylenes 103 72.7 - 1.21 <br /> TPH Gasoline 96 82.4 - 117 <br /> TPH Diesel N/A N/A -- N/A <br /> TRPH (418.1) N/A N/A <br /> c�1 <br /> cy denw Labo <br /> OFFICE (209)667-5258 FAX (209)667-2581 <br />