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Sherwood <br /> &S8071 NORTH LANDER AVENUE <br /> '• Labs P.O. BOX 937 <br /> C O R P O R A T ! O N HILMAR,CALIFORNIA 95324 <br /> 07/06/01 QUALITY CONTROL REPORT DHS Cert. #1400 <br /> Total Petrolcum 14ydrocesrbana(TPH) Analy3ia <br /> Client: FOOTHILL ENGINEERING Date Received: 06/28/01 <br /> 12793 PADDY CREEK Date Started: 07/02/01 <br /> LODI, CA 95240 Date Complete: 07/05/01 <br /> ATTN: ERV RIFENBURG <br /> Lab Report #: H1062804 Lab Sample #:PH1061550-PH1061562 <br /> Linearity Check: <br /> BTEX Benzene 0.9991 TPH Gasoline 1.0000 <br /> Toluene 0.9996 TPH Diesel N/A <br /> Ethyl Benz 0.9998 Motor Oil N/A <br /> Xylenes 0.9999 TRPH (418.1) N/A <br /> MTBE N/A <br /> std Repeatability MTBE Benzene Toluene Eth Benz xylenes <br /> BTEX N/A 100 102 100 107 <br /> TPH Gasoline 95 TPH Diesel N/A <br /> TRPH (418.1) N/A Motor Oil N/A <br /> etatrix Spike Recoveries MS MSD RPD <br /> MTBE N/A N/A N/A <br /> BTEX Benzene 101 104 3 <br /> Toluene 101 101 0 <br /> Ethyl Benz 97 100 3 <br /> Xylenes 1.07 104 3 <br /> TPH Gasoline 83 87 5 <br /> TPH Diesel N/A N/A N/A <br /> ldethod Blank 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 9b Recovery EPA Performance Acceptance Range <br /> BTEX Benzene 104 73.1 - 124 <br /> Toluene 110 73.6 - 120 <br /> Ethyl Benz 116 72.5 - 118 <br /> Xylenes 116 72.7 - 121 <br /> TPH Gasoline 99 82.4 - 117 <br /> TPH Diesel N/A N/A - N/A <br /> . TRPH (418.1) N/A N/A <br /> N cy <br /> Pct <br /> -edenweg, Lab D Feco <br /> OFFICE: (209)667-5258 FAX: (209)667-2581 <br />