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1 <br /> i <br /> } 04/29197 <br /> QUALITY CONTROL REPORT DNS Certification #1400 <br /> f Volatile Analyses <br /> } Client: DEL TECH Date Received: 04/21197 <br /> 10624 OLIVE AVE Date Started: : 04122/97 <br /> OAKDALE, CA 95361 Date Complete: 04/25/97 <br /> ATTN: DON LIGHT <br /> Lab Report #: H7042103 Lab Sample #s PH7041809-1812 <br /> Linear Check-71 <br /> BTEK Benzene 0.9989 TPH Gasoline 0.9989 <br /> 4 Toluene 0.9998 TPH Diesel N/A <br /> Ethyl Benzene 0.9999 Motor Oil N/A <br /> Xylenes 0.9999 TRPH (418.1) NIA <br /> t <br /> MTBE 0.9998 <br /> Std % Re eata Ility MTBE Benzene Toluene Eth Benz Xylenes . _. <br /> BTEX 98 100 100 105 103 <br /> TPH Gasoline 112 TPH Diesel NIA <br /> TRPH (418.1) NIA TPH Motor Oil N/A <br /> Matrix Spike Recoveries MS MSD RPD <br /> MTBE 99.0 89.0 0.0 <br /> BTEX Benzene 0&0 102,0 4.0 <br /> Toluene 102.0 104.0 1.9 <br /> ! Ethyl Benzene 101.0 102.0 1.0 <br /> Xylenee 102.0 1030 2.9 <br /> j TPH Gasoline 97.0 95.0 2.1 <br /> TPH Diesel NIA NIA <br /> TRPH 418.1 N/A <br /> Method Blank MTBE Benzene Toluene Eth Benz Xylenes <br /> BTEX N/A <3 u L <3 u L c.3 ugtL c.3 u L <br /> TPH Gasoline <50 u L TPH Diesel/MO N/A TRPH(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 106 36.9 - 1020 <br /> Xylenes 107 42.7 "" - 137.9 <br /> TPH Gasoline 118 35.0 - 13MI <br /> 1 TPH Diesel NIA 45.1 - 133.2 <br /> TRPH (41&1) NIA N/A <br /> Nancy Bledenweg, Lab Director J � <br />