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Sequoia <br /> 819 Striker Avenue Suite$ <br /> d <br /> Sacramento CA 95834 <br /> (916)921-9600 <br /> //�� -tical. <br /> r ' FAX(916)921-0100 <br /> I-- na ` -t ry i4ai www sequolalabs com <br /> f• <br /> Delta Environmental Consultants(Cameron Park) Project ARCO 2168, Stockton,CA <br /> 3330 Cameron Park Dr Ste 550 Project Number 2168, Stockton,CA Reported <br /> Cameron Park CA 95682 Project Manager Steve Carter 12121/0109 27 <br /> Volatile Organic Compounds by EPA Method 8260B <br /> Sequoia Analytical - Sacramento <br /> Reporting <br /> Analyte Result i.imit Onits Dtiution Batcn Preparea Analyzeo Metnod ]votes <br /> MW5(S112083-07)Water Sampled 12/06/0108 48 Received 12/06/01 13 45 R-05 <br /> Tert-butyl alcohol ND 50 ug/I 10 1120238 12/19/01 12/19/01 EPA 8260B <br /> Methyl tert-butyl ether ND 50 " <br /> Di-isopropyl ether ND 5 0 " <br /> Ethyl tert-butyl ether ND 5 0 " <br /> Tert-amyl methyl ether ND 5 0 " <br /> 1,2-Dfchloroethane _ _ ND _ 50 <br /> Surrogate 12-DCA-d4 - 119% 60-140 <br /> N1W6(S112083-08)Water Sampled 12/06/0106 18 Received 12/06/01 13 45 R-05 <br /> Tert-butvl alcohol ND 1000 ug/l 200 1120238 12/19/01 12/19/01 EPA 8260B <br /> Methyl tent-butyl ether ND 100 " <br /> Di-isopropyl ether ND 100 " <br /> Ethyl tert-butyl ether ND 100 " <br /> 02r'-amyl <br /> methyl ether ND 100 <br /> - ichloroethane-- —- - _ -- ND 100 <br /> Surrogate 12-DCA-d4 122% 60-140 " <br /> MW7(SI12083-09)Water Sampled 12/06/0105 51 Received 12/06/01 13 45 R-05 <br /> Tert-butyl alcohol ND 50 ug/l 10 1120238 12/19/01 12/19/01 EPA 8260B <br /> lvlethyl tert-butyl ether ND 5 0 " <br /> Di-isopropyl ether ND 5 0 " <br /> Ethyl ter -butyl ether ND 5 0 " <br /> T'ert-amyl methyl ether ND 5 0 " <br /> 1 2-Dichloroethane — -- ND- 5 - - ----- ------ --- F -- — -- -- - <br /> Surrogate 12-DCA-d4 112% 60-140 " <br /> equota Analytical - Sacramento The results in this report apply to the samples analysed in accordance with the chain of <br /> custody document This analytical report must be reproduced in its entirety <br /> Page 7 of 14 <br />