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819 Striker Avenue,Suite 8 <br /> Sequoia Sac-amento,CA 95834 <br /> (916}921-9600 <br /> FAX(9 t 6)921-0100 <br /> Analytical www.sequoialabs.com <br /> Delta Environmental Consultants(Cameron Park) Project: Arco 6100,'Tracy,CA <br /> 3330 Cameron Park Dr. Ste 550 Project Number: NIA Reported: <br /> Cameron Park CA, 95682 Project Manager: lay Johnson 09/17/01 14:42 <br /> Volatile Oxygenate Compouzids by EPA Method 8260A <br /> F <br /> Sequoia Analytical - Sacramento <br /> Reporting 1 <br /> If Analvte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> B37-124(S109I22-01)Soil Sampled: 09/06/01 14:05 Received:09/10/01 14:00 <br /> Tert-butyl alcohol ND 10 mbJkg. 1 1090I38 09/14/01 09/15/01 EPA 8260A <br /> Methyl tert-butyl ether ND 0.10 " <br /> Di-isopropyl ether ND 0.10 <br /> Ethyl tert-butyl ether ND 0.10 " <br /> Tert-amyl methyl ether ND 0.10 <br /> $ Ethanol ND 150 " <br /> f 1.2-Dichloroethane ND 0.10 " <br /> Ethylene dibromide ND 0.10 <br /> Surrogate: 1,2-DCA44 — -- 92.8% 60 140 " <br /> B37-139(5109122-02)Soil Sampled: 09/06/01 14:35 Received:09/10/01 14:00 <br /> Tert-butyl alcohol ND 10 mg/kg 1 1090138 04/14/01 09/15/01 EPA 8260A <br /> Methyl tert-butyi ether ND 0.10 <br /> isopropyl ether ND 0.10 " <br /> iyl tert-butyl ether ND 0.10 <br /> Teri-amyl methyl ether ND 0.10 <br /> Ethanol ND 150 " <br /> 1,2-Dichloroethane ND 0.10 <br /> I Ethylene dibromide ND 0.10 " <br /> Surrogate: 1,2-DCA-d4 <br /> 97.2% 60-140 <br /> B38-125(5109122-03)Soil Sampled: 09/07/01 11-20 Received:09/10/01 14:00 <br /> Tertbutyl alcohol ND 10 mg/kg 1 1090138 09/14/01 09/15/0I EPA 8260A <br /> Methyl tert-butyl ether ND 0.10 <br /> Di isopropyl ether ND 0.10 <br /> ll Ethyl tert-butyl ether ND 0.10 <br /> Tert-amyl methyl ether ND 0.10 " <br /> Ethanol ND 150 <br />± 1,2-Dichloroethane ND 0.10 <br /> Ethylene dibromide ND 0.10 " <br /> F ^ tt <br /> Surrogate: 1,2-DCA-d4 104% 60-140 <br /> f 1 <br /> I <br /> i <br /> 5 <br /> f <br /> FC]UOIa ArialytiCal - S3GCa177er1t0 The results in this rep art apply to the samples analyzed in accordance with the chain of <br /> I custody doaiment. This analytic.!report must 6e reproduced in its entirety. <br />` Page 3 of 7 <br /> t <br />