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05102197 <br /> QUALITY CONTROL REPORT DHS Certification #1400 � <br /> Volatile Analyses <br /> Client: Foothill Engineering Dake Received: 04118/97 <br /> 12793 Paddy Creek Lane Date Started: . 04/21/97 <br /> Lodi, CA 95240 Date Complete: 04/25/97 <br /> ATTN: Ervin Rifenburg <br /> Lab Report#: H7041810 Lab Sample#s PH7041724-1737 <br /> Linearity Check: _ <br /> BTEX Benzene 0.9999 TPH Gasoline 0.9989 <br /> Toluene 0.9998 TPH Diesel ° 0.9995 1 <br /> Ethyl Benzene 0.9999 Motor Oil 0.9999 <br /> Xylenes 0.9998 TRPH (418.1) N/A <br /> MTBE NIA <br /> } <br /> Std % Repeatability MTBE Benzene Toluene Eth Benz Xylenes <br /> BTEX NIA 104 105 106 106 <br /> TPH Gasoline 109 TPH Diesel 101 <br /> TRPH (418.1) N/A TPH Motor Oil 107 <br /> Matrix Spike Recoveries MS MSD RPD <br /> i MTBE N/A NIA ERR # <br /> BTEX Benzene 100.0 96.0 4.1 <br /> a Toluene 101.0 96.0 5.1 <br /> Ethyl Benzene 103.0 99.0 4.0 <br /> Xylenes 99.0 97.0 2.0. <br /> TPH Gasoline .105.0 108.0 2.8 <br /> TPH Diesel 104 107 <br /> TRPH 418.1 N/A <br /> Method Blank MTBE Benzene Toluene Eth Benz Xylenes <br /> BTEX N/A <3 pq/Kg , <3 &Kg <3 &Kg <3 WZKg <br /> TPH Gasoline <1 mg/Kg TPH Diesel/MO <5 mg/KKgTRPH(418.1) N/A <br /> Lab Control Sample % Recovery EPA Performance Acceptance Range <br /> BTEX Benzene 93 37.0 - 151.0 <br /> Toluene 101 47.0 - 150.0 <br /> Ethyl Benz 108 36.9 - 102.0 <br /> Xylenes 108 42.7 * 137.9 <br /> TPH Gasoline 118 35.0 - 130.1 <br /> f <br /> TPH Diesel 71 45.1 135.2 <br /> TRPH (41&1) . N/A N/A <br /> 2c{-iii c r.G��' <br /> Nancy Biedenweg, Lab Director �7iL-���. � Z/c� <br />