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• 01/30/97 <br /> QUALITY CONTROL REPORT DHS Certification #1400 <br /> Volatile Analyses- <br /> Client: Foothill Engineering Date Received: 01/27/97 <br /> 12793 Paddy Creek Lane Date Started: : 01/2W97 <br /> Lodi, CA 93240 Date Complete: 01/29197 <br /> ATTN: Ervin Rifenburg- <br /> Lab Report#: H7012704 Lab Sample#s PH7011652-i658 <br /> Linear Check: <br /> BTEX Benzene M9981 TPH Gasoline 1.0000 <br /> Toluene 0.9882 TPH Diesel NIA <br /> Ethyl Benzene 0.9984 Motor Oil N/A <br /> Xylenes 0.9895 TRPH (418.1) NIA <br /> MTBE NIA <br /> Std % Repeatability MTBE Benzene Toluene Eth Benz Xylenes <br /> BTEX N/A 105 104 107 100 <br /> TPH Gasoline 98 TPH Diesel NIA <br /> TRPH (418.1) NIA TPH Motor Oil N/A <br /> . Matrix Spike Recoveries MS MSD RPD <br /> MTBE N/A NIA ERR <br /> BTEX Benzene 93.0 94.0 1.1 <br /> Toluene 93.0 95.0 2.1 <br /> Ethyl Benzene 99.0 103.0 4.0 <br /> Xylenes 95.0 98.0 3.1 <br /> TPH Gasoline 90.0 98.0 8.5 <br /> TPH Diesel N/A N/A <br /> TRPH 418.1 N/A <br /> Method Blank MTBE' Benzene- Toluene Eth Benz Xylenes <br /> BTEC NIA <.3 ug/L <.3 ug/L c.3 ug/L ¢.3 ug/L <br /> TPH Gasoline <50uL TPH Diesel/MO N/A TRPH(41&1) NIA <br /> Lab Control Sam le% Recovery EPA Performance Acceptance Range <br /> BTEX Benzene 105 37.0 - 151.0 <br /> Toluene 103 47.0 - 150.0 <br /> Ethyl Benz 111 3&9 = 1020 <br /> Xylenow 102 42.7 "' 137.5 <br /> TPH Gasoline 95 33.0 - 130.1 <br /> . TPH Diesel N/A. 45.1 - 135.2 <br /> TRPH (418.1) N/A N/A <br /> Gloria Poling, Lab Director <br />