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Spp 404 N Wlget lane <br />equoia Walnut Geek CA%5% <br />FAX {925) <br />9251 %6-%3 <br />Analytical - ------ - ._ ------ -- www5equol� <br />(rettler Rvan, Inc - Dublux Project Chevron <br />6747 Sierra Court Suite J Project Number Chevron #9-5775 Reported <br />Dublin CA 94568 Protect Manager Scott Poiston 24 -Aug -00 14 37 <br />Volatile Organic Compounds by EPA Method 8260B - Quality Control <br />Sequoia Analytical - Walnut Creek <br />Repotting Spike Source %REC RPD <br />kwyte Result Ltirut Units Level Result %REC Limits RPD Lutut Notes <br />Batch OH23014 - EPA 5030E JPfTJ <br />Bunk (OH23014-BLK1) PMared & Analyzed 23 -Aug -00 <br />tert-Huivl alcohol ND 100 US/) <br />Methyl tett-butt 1 ether ND 20 " <br />Dt-Isopropyl ether ND 20 <br />Ethyl tett butvi ether ND 20 <br />tort -Amyl methvl ether ND 20 <br />Surrogate Dibromofiuoromelhane <br />520 <br />Soo 104 50-150 <br />Surrogate i 2-Dtehloroethane-d4 <br />520 <br />500 104 50 -ISO <br />LCS (OH73014-BSI) <br />450 <br />Prepared & Analyzed 23 -Aug -00 <br />Methyl tert-butyl ether <br />323 <br />20 ugil 500 105 30-130 <br />Susogote DibromoJiuorometham <br />52.0 <br />50,0 104 50-1So <br />SwMate I 1-Dichlvroethane-d4 <br />510 <br />Soo 104 SO -1149 <br />Matrix Spike (OH23014-MSI) <br />Source WM527-01 <br />Prepared & Analyzed 23 -Aug -00 <br />Mdhyl tett-butyl ether <br />472 20 ugil <br />500 ND 944 60.150 <br />SwMm Dibromofluarvmethe— <br />450 <br />Soo 900 50-150 <br />Surrogate 11Drchloroethww-d4 <br />48.0 <br />500 960 50-150 <br />Matrix Spike Dup (4H23014-MSDI) <br />Source W008527-01 <br />Prepared & Analyzed 23 -Aug -00 <br />Methyl tent -butyl ether <br />522 20 agil <br />500 ND 104 60-150 101 25 <br />$ntmgate Dibromejhimnmethmn <br />450 <br />Soo 900 50-150 <br />sw"ate I 1-Dtehi0roe0jMnc-d4 <br />490 " <br />Soo 9R0 50-150 <br />- Wahim Creek The results to this report apply to the samples analyzed in accordance with the chW <br />custody docwnenr Ties analytical report must be reproduced in its enarety <br />Page 7 of s <br />