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! J I ' . 819 Striker Avenue,Suite 8 ` Se' LIOla Sacramento, 95834 ff (916))921-960fl Analytical FAX(916)921-0100 www.sequoialabs.coin Delta Environmental Consultants(Cameron Park) Project: Arco 6100,Tracy,CA 3330 Cameron Park Dr.Ste 550 Project Number: NIA Reported: { Cameron Park CA,95682 Project Manager: Jay Johnson 09/21/01 15:50 r Volatile Organic Compounds by EPA Method 8260B Sequoia Analytical- Sacramento Reporting j Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes B36-20 5109118-09 Soil am Ied:09/05/0110:15 Received:4 10710115:15 Tert-butyl alcohol ND 10 mg/kg 1 1090152 09/17/01 09/18/01 EPA 826013 Methyl tert-butyl ether ND 0.10 " Di-isopropyl ether ND 0.10 " Ethyl tert-butyl ether ND 0.10 Tert-amyl methyl ether ND 0.10 " Ethanol ND 150 1,2-Dichloroethane ND 0.10 „ r Ethylene dibromide ND 0.10 E i Surrogate:1.2-DCA-d4 87.6% 60-140 I B36-35(S109118-10)Soil Sampled:09/05/01 10:50 Received:09107/0115:15 - Tert-butyl alcohol ND 10 mglkg 1 1090152 09/17/01 09/18/01 EPA 8260B Methyl tert-butyl ether ND 0.10 ! Di-isopropyl ether ND 0.10C " Ethyl text-butyl ether ND 0.10 reit-amyl methyl ether ND 0.10 " Ethanol ND 150 r 1,2-Dichloroethane ND 0.10 Ethylene dibromide ND 0.10 j Surrogate:1,2-DCA-d4 82.4% 60-140 f B36-64(S109118-11)Soil Samnled:09/05/0111:50 Received.09/07/01 15.15 Tert-butyl alcohol ND 10 mg/kg 1 1090152 09/17/01 09/18/01 EPA 8260B Methyl tert-butyl ether ND 0.10 " Di-isopropyl ether ND 0.10 " Ethyl tert-butyl ether ND 0.10 " Tert-amyl methyl ether ND 0.10 I Ethanol ND 150 1,2-Dichloroethane ND 0.10 Ethylene dibromide ND 0.10 " Surrogate.-1,2-DCA-d4 80.8% 60-140 " - I I Sequoia Analytical-Sacramento The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. i I II Page Page 2 of 24 I l• 1