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1 <br /> Sherwood <br /> 8071 NORTH LANDER AVENUE <br /> Labs PO BOX 937 <br /> C O R P O R A T 1 0 N HILMAR, CALIFORNIA 95324 <br /> 1 <br /> 06/15/01 QUALITY CONTROL REPORT DHS Cert. #1400 <br />' Total Petroleum Hydrocarbons(TPH) Analysis <br /> Client: GEO-PHA.4E ENVIROkOMTAL Date Received: 06/11/01 <br />' 2937 VENEb1AN #B240 Date Started: 06/11/01 <br /> MDDESTO, CA 95356 Date Complete: 06/14/01 <br /> ATTN: STEPHEN LAWWORD <br />' Lab_R ort i1: M1061101 Lab sample #.-PH1060198-MM060203 <br /> Linearity Check: <br /> BTEX Benzene 0.9994 TPH Gasoline 0.9999 <br />' Toluene 0.9993 TPH Diesel N/A <br /> Ethyl Benz 0.9995 bdbtor Oil N/A <br />' Xylenes 0.9998 TRPH (418.1) N/A <br /> WEE N/A <br />' std % Repeatability � NITSE Benzene Toluene Eth Benz Xylenes <br /> BTEX N/A 98 96 97 110 <br /> TPH Gasoline 104 TPH Diesel N/A <br /> TRPH (418.1) N/A Motor Os.l N/A <br /> ffiatrix spike Reooveriea us MSD RPD <br /> MTBE N/A N/A N/A <br /> BTEX Benzene 99 102 3 <br /> Toluene 101. 101 0 <br />' Ethyl Benz 98 97 1 <br /> xylenes 99 107 8 <br /> 1 TPH Gasolsae 105 104 1 <br /> TPH Diesel N/A N/A N/A <br />' Kethod ftlzi bn13E 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/MD N/A TRPH(418-1) N/A <br />' Lab Control Smple % Recovery EPA Performance Acceptance Range <br /> BTEX Benzene 96 73.1 - 124 <br />' Toluene 101 73.6 - 120 <br /> Ethyl Bens 95 72.5 118 <br /> Xylenes 109 72.7 - 121 <br />' TPH Gasoline 106 82.4 - 117 <br /> • TPH Diesel N/A N/A - N/A <br /> vN 09)66 -525$ FAX (209)667-2581 <br /> 1 <br />