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Sequoia 819 Avenue Suite 8 <br /> RR�� Sacramento CA 95834 <br /> (916)921-9600 <br /> Analytical FAX(916) 00 <br /> • www sequoialabs alabs com <br /> Stratus Environmental Project ARCO 6100,Tracy,CA <br /> 3330 Cameron Park Drive,Ste 550 Project Number 6100,Tracy,CA Reported <br /> Cameron Park CA,95682 Project Manager Jay Johnson 07/05/02 11 10 <br /> Volatile Organic Compounds by EPA Method 8260B <br /> Sequoia Analytical - Sacramento <br /> Reporting <br /> [An�alyte <br /> �7 Result Limit Units Dilution Batch Prapared Analyzed Method Notes <br /> MW-2(5206339-01)Water Sampled 06/21/02 05 49 Received 06121/02 10 22 <br /> Tert-butyl alcohol ND 50 ug/l 1 2070013 07/01/02 07/01/02 EPA 82608 <br /> Methyl tert-butyl ether ND 050 <br /> Di-isopropyl ether ND 050 <br /> Ethyl tert-butyl ether ND 050 <br /> Tert-amyl methyl ether ND 050 <br /> Surrogate 12-DCA-d4 112% 60-140 " -- <br /> VW-5(S206339-02)Water Sampled 06/21/02 05 33 Recerted 06/21/02 10 22 <br /> Tert-butyl alcohol ND 50 ug/1 1 2070013 07/01/02 07/01/02 EPA 82605 <br /> Methyl tert-butyl ether 16 <br /> 050 „ <br /> Di-isopropyl ether ND 050 " <br /> Ethyl tert-butyl ether ND 050 „ <br /> ert-amyl methyl ether ND 050 <br /> rogate 1 2-DCA-d4 111 % 60-140 <br /> VW-6(5206339-03)Water Sampled 06/21/02 05 41 Received 06/21/02 10 22 <br /> Tert-butyl alcohol 170 50 ug/l 10 2070013 07/01/02 07/01/02 EPA 82608 <br /> Methyl tert-butyl ether 330 so " " <br /> Di-isopropyl ether ND 50 " <br /> Ethyl tert-butyl ether ND 50 <br /> Tert-amyl methyl ether ND 50 <br /> Surrogate 12-DCA-d4 113% 60-140 — — --- �- <br /> uoia Analytical- Sacramento 77ie results in this report apply to the samples analyzed to accordance with the chain of <br /> custody document This analytical repo[t must be reproduced in its entirety <br /> Page 3 of 7 <br />