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Sherwood <br /> Labs 8071 NORTH LANDER AVENUE <br /> C O R P O R A T I O N PO BOX 937 <br /> HILMAR,CALIFORNIA 95324 <br />' 12/11/00 QUALITY CONTROL REPORT DHS Cert. 01400 <br /> Total Petroleum Hydrooarbenc(TPH) Analyaxa <br /> Client. =O-PHASE E 1RONkd=AL Date Received: 12/05/00 <br /> 2937 VE'NE;MAN #B240 Date Started: 12/07/00 <br />' MODESTO, CA 95356 Date Complete: 12/11/00 <br /> ATTN: STEPHEN LANKFORD <br /> Lab Report 0: H0120601 Lab Sample #-PH4120250-PHO120258 <br />' Linearity Check. <br /> BTEX Benzene 0.9994 TPH Gasoline 0.9999 <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 />' MTBE N/A <br /> std % Rapeatabziitiy MTBE Benzene Toluene Eth Benz Xylenes <br />' BTEX N/A 100 103 93 100 <br /> TPH Gasoline 99 TPH Diesel N/A <br /> TRPH (418.1) N/A Motor Oil N/A <br />'• matrix Spike Recoveries MS MSD RPD <br /> MTBE N/A N/A N/A <br />' BTEX Benzene 104 109 5 <br /> Toluene 102 103 1 <br /> Ethyl Benz 88 96 9 <br />' Xylenes 90 95 5 <br /> TPH Gasoline 102 96 6 <br /> TPH Diesel N/A N/A N/A <br /> 1 <br /> method Black 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 89 73.6 - 120 <br />' Ethyl Benz 99 72.5 - 118 <br /> Xylenes 105 72.7 121 <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 /> 'a:y B�ieweg, Dir t <br /> OFFICE (209) 667-5258 FAX (209)667-2581 <br />