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819 Striker Avenue Suite 8 <br /> Sequoia Sacramento CA 95834 <br /> (916) 921-9600 <br /> FAX(916) 00 <br /> Www sequolatabs com <br /> 01%0- <br /> Delta Environmental Consultants(Cameron Park) Project ARCO 2168, Stockton,CA <br /> 3330 Cameron Park Dr Ste 550 Project Number N/A Reported <br /> Cameron Park CA 95682 Project Manager Jay Johnson 08/29/01 15 31 <br /> Volatile-Oxygenate Compounds by EPA Method 8260A - Quality Control <br /> Sequoia Analytical - Sacramento <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch 1080234- EPA 5030B PIT) <br /> Blank(1080234-BLK1) Prepared&Analyzed 08/22/01 <br /> Tert-butyl alcohol ND 200 ug/l <br /> Methyl tert-butyl ether ND 20 <br /> Di-isopropyl ether ND 20 " <br /> Ethyl tert-butyl ether ND 20 " <br /> Teri-amyl methyl ether ND 20 " <br /> Ethanol ND 3000 <br /> 1,2-Dichloroethane ND 20 " <br /> Surrogate 12-DCA-d4 480 .500 960 60-140 <br /> LCS(1080234-BS1) Prepared&Analyzed 08/22/01 <br /> W <br /> hyl tent-butyl ether 515 20 ugA 500 103 60-140rogate 12-DCA-d4 T 507 500 101 60-140 <br /> Matrix Spike(1080234-MS1) � Source S108205-06 Prepared&Analyzed 08/22/01 <br /> Methyl tert-butyl ether 53 0 20 ug/l 500 ND 106 60-140 <br /> Surrogate 1 2-DCA-d4 503 50 0 � 101 60-140 <br /> Matrix Spike Dup(1080234-MSD1) _ _ Source 5108205-06 Prepared&Analyzed 08/22/01 <br /> Methyl tert-butyl ether 534 20 ug/l 500 ND 107 60-140 0 752 25 <br /> Surrogate 1 2-DCA-d4 497 T 500 994 60_140 <br /> Batch 1080252-EPA 5030B [P/TI <br /> Blank(1080252-BLK1) Prepared&-Analyzed 08/23/01 <br /> 'Pert-butyl alcohol ND 200 ug/l <br /> Methyl tert-butyl ether ND 20 " <br /> Di-isopropyl ether ND 20 " <br /> Ethyl tert-butyl ether ND 20 " <br /> Tert-amyl methyl ether ND 20 " <br /> Ethanol ND 3000 " <br /> 1,2-Dichloroethane ND 20 " <br /> Surrogate 1 2-DCA-d4 � 484 -^ -uW—"- 500 ----- 968 60-140 <br /> Alk <br /> equoia Analytical - Sacramento The results in this report apply to the samples analy_ed in accordance with the chain of <br /> custody document This analytical repro i must be reproduced in its entirety <br /> Pale 11 of 14 <br /> r� <br />