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404 N WeLane ' <br /> 1 <br /> Sequoia Walnut Creek CAA 94598 <br /> {925)988 9600 <br /> IWO Analytical cam <br /> FAX 1925)988 ' <br /> FAX <br /> sequoialabs cam <br /> Secor-Rancho Cordova Project Arco <br /> 3017 Kilgore Rd Ste #1100 Project Number Arco#4932,Stockton Reported ' <br /> Rancho Cordova CA 95670 Project Manager Rusty Benkosky 27-Jul-01 14 25 <br /> Volatile Organic Compounds by EPA Method 8260B - Quality Control t <br /> Sequoia Analytical - Walnut Creek <br /> Reporting Spike Source %RCC RPD <br /> -Nnalyte Result Limit Units Level Result %REC Limits RPD Limit Notes ' <br /> latch IG20011 - EPA 503013(PIT) <br /> ;lank(1G20011-BLK1) Prepared& Analyzed 20-Jul-0I - - <br /> thanol ND 500 ug/l <br /> rt-Butyl alcohol ND 20 " <br /> Methyl ten butyl ether ND 20 ' <br /> )r-isopropyl ether ND 20 " <br /> thy;tert-butyl ether ND 20 " <br /> -rt-Amyl methyl ether ND 20 , <br /> 2-Drchloroethane ND 20 " <br /> thytene drbromide ND 20 <br /> urrogate Dibramofluoromethane 470 — — — 500 940 50-150 <br /> urrogale 1 2-Drchloroethane-d4 460 500 920 50-150 ' <br /> Hank(1G20011-BLK2) Prepared&Analyzed 24-Jul-01 <br /> thanol - --- ND 500 ug(i <br /> -rt-Butyl alcohol ND 20 " <br /> +[ethyl ter-butyl ether ND 20 <br /> )r-isopropyl ether ND 20 , <br /> thyl tort-butyl ether ND 20 " <br /> trt-Amyl methyl ether ND 20 <br /> ,2-Drchloroethane ND 20 " <br /> thytene drbromide NO 20 --- ' <br /> ,urrogale Dibromofluoromelhane_ 470 500 940 50-150 <br /> arrogate 1 2-Drchloroethane-d4 450 " 500 900 50-130 <br /> Hank(1G20011-BLK3) Prepared&Analyzed 25-Jul-01 <br /> .thanol --- _ - - --- ND 500 ug/[ <br /> ert-Butyl alcohol ND 20 " <br /> [ethyl tert-butyl ether ND 20 ' <br /> )i-isopropyl ether ND 20 " <br /> thy;tort-butyl ether ND 20 " <br /> ed-Amyl methyl ether ND 20 " <br /> 2-Drehlorocthane ND 20 " <br /> Ahylene drbromide ND 20 " <br /> airrogate Dibromofluoromethane 560 500 112 50-150 ' <br /> ,arrogate 12-Dichloroerhane-d4 520 500 104 50-150 <br /> -,equoia Analytical- Walnut Creek The results in this report apply to the samples analyzed in accordance with the charn of ' <br /> custody document This analytical report must be reproduced in its entire 0 <br /> Page i 1 of 15 ' <br /> IJ4 <br />