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i <br /> 02/06/97 <br /> QUALITY CONTROL REPORT DNS Certification #1400 <br /> Volatile Analyees <br /> Client: DEL-TECH Date Received: 01/29/97 <br /> 10624 OLIVE AVE Date Started: : 02103/97 <br /> OAKDALE, CA 93361 Date Complete: 02/05/97 <br /> ATTN: DON LIGHT <br /> Lab Report #: H7012912 Lab Sample #s PH7011940-944 <br /> Linearity Checkc� <br /> BTEX Benzene 0.9998 TPH Gasoline 0.9989 <br /> Toluene 0.9897 TPH Diesel N/A <br /> Ethyl Benzene 0.9998 Motor Oil N/A <br /> Xylenes 0.9995 TRPH (418.1) N/A <br /> MTBE 0.9998 <br /> Std % Repeatability MTBE Benzene Toluene Eth Benz Xylenes <br /> BTEX 101 97 95 98 101 <br /> TPH Gasoline 102 TPH Diesel N/A <br /> . TRPH (418.1) N/A TPH Motor Oil N/A <br /> Matrix Spike Recoveries MS MSD RPD <br /> MTBE 108.0 103.0 4.7 <br /> HT©C Benzene 104.0 101.0 29 <br /> Toluene 101.0 99.0 2.0 <br /> Ethyl Benzene 109.0 111.0 1.8 <br /> Xylenee 105.0 104.0 1.0 <br /> TPH Gasoline 100.0 98.0 2.0 <br /> TPH Diesel N/A N/A <br /> TRPH 418.1 N/A <br /> Method Blank MTBE Benzene Toluene Eth Benz Xylenes <br /> BTEX c5 ug/L c.3 ug/L C.3 ug/L t.3 ug/L t.3 ug/L <br /> TPH Gasoline <50 ug/L TPH Dlesel/MO N/A TRPH(418.1) N/A <br /> Lab Control Sam le% Recovery EPA Performance Acceptance Range <br /> BTEX Benzene 102 37.0 - 151.0 <br /> Toluene 111 47.0 - 150.0 <br /> Ethyl Benz 109 36.9 - 1020 <br /> Xylenes 110 4..7 "' 137.n <br /> . TPH Gasoline 102 35.0 - 130.1 <br /> TPH Diesel N/A 45.1 - 133.2 <br /> TRPH (418.1) N/A N/A <br /> Gloria Paling, Lab Director <br />