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01/21/97 <br /> QUALITY CONTROL REPORT DHS Certification #1400 <br /> Volatile Analyses <br /> Client. DEL-TECH Date Received. 12106/96 <br /> 10624 OLIVE AVE Date Started: : 12!06196 <br /> OAKDALE, CA 95361 Date Complete: 12/10/96 <br /> ATTN: DON LIGHT <br /> Lab Report#: H6120601 Lab Sample#9 PH6120527-551 <br /> Linearity Check- <br /> BTEX Benzene 0.9895 TPH Gasoline 1.0000 <br /> Toluene 0.9987 TPH Diesel N/A <br /> Ethyl Benzene 0.9999 Motor Oil N/A <br /> Xylenes 0.9895 TRPH (418.1) N/A <br /> MTBE N/A <br /> Std % RepeatabilityMTBE Benzene Toluene Eth Benz Xylenes <br /> STEX N/A 102 99 102 101 <br /> TPH Gasoline 114 TPH Diesel N/A <br /> TRPH (418.1) N/A TPH Motor Oil N/A <br /> Matrix Spike Recoveries MS MSD RPD <br /> MTBE N/A N/A ERR <br /> BTEX Benzene 1020 100.0 2.0 <br /> Toluene 1060 1010 48 <br /> Ethyl Benzene 1020 1020 0.0 <br /> Xylenes 91.0 820 1 1 <br /> TPH Gasoline 96.0 940 2.1 <br /> TPH Diesel N/A N/A <br /> TRPH 418.1 N/A <br /> Method Blank MTBE Benzene Toluene Eth Benz Xylenes <br /> BTEX N/A < 3 ug/L c.3 ug/L E.3 ug/L c.3 ug1L <br /> TPH Gasoline t50 ug/L TPH DieseUMO N/A TRPH(418L1) N/A <br /> Lab Control Sample% Recovery EPA Performance Acceptance Range <br /> BTEX Benzene 107 54.8 - 1410 <br /> Toluene 111 68.6 - 128.7 <br /> Ethyl Benz 105 705 - 130.0 <br /> Xylenes 108 68.3 - 1379 <br /> TPH Gasoline 111 35.0 - 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 />