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t <br /> Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650) 364 9233- <br /> 404 N Wiget Lane Walnut Creek CA 94598 (925)9B8-9600 FAX(925)988-9673 <br /> l 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <br /> Iwo Analytica <br /> 1455 McDowell Blvd North Ste D Petaluma,CA 94954 (707)792-1865 FAX(707)792-0342 <br /> 0 <br /> Cambna Environmental Project Shell Oil Co Sampled 1/14199 to 1/15/99 <br /> 270 Perkins St Project Number 880 Victor Rd- Lodi Received 1/18/99 <br /> Sonoma,CA 95476 Project Manager Aubrey Cool Reported 1/28199 <br /> r _ Volatile Organic Compounds by EPA Method 8260B/Quality Control <br /> - Sequoia Analytical-Petaluma <br /> Date Spike Sample QC Reporting Limit Recov RPD RPD <br /> Analyte Analyzed Level Result Result Units Recov Limits % Limit % Notes* <br /> Matrix Spike 9010346-MSI L P901250-03 <br /> Methyl tert-butyl ether 1/20/99 Soo ND 447 ug/kg 700-130 89 4 <br /> Surrogate Dibromofluoromethane 500 453 800-120 906 <br /> Surrogate 1,2-Dichloroethane-d4 Soo 435 800-120 870 <br /> Surrogate Toluene-d8 Soo 43 5 810-117 870 <br /> Surrogate 4-Bromofluorobenzene Soo 454 740-121 908 <br /> Matrix Spike Dup 9010346-MSDI P901250-03 <br /> Methyl tert-butyl ether 1/20/99 500 ND 41 7 ug/kg 700-130 83 4 20 0 694 <br /> Surrogate Dibromofluoromethane 500 422 800-120 844 <br /> Surrogate 12-Dichloroethane-d4 500 401 800-120 802 <br /> Surrogate Toluene-d8 500 408 810-117 816 <br /> Surrogate 4-Bromofluorobenzene 500 41 7 " 740-121 83 4 <br /> r <br /> Batch 9010401 Date Prepared 1/22199 Extraction Method EPA 5030 waters <br /> Blank 9010401-BLK1 <br /> Tert-amyl methyl ether 1/22/99 ND ug/l 100 <br /> Tert-butyl alcohol ND 200 <br /> Di-isopropyl ether ND 1 00 <br /> 1,2-Dtbromoethane(EDB) ND 0 500 <br /> - 1,2-Dichlorocthane—==--= --"- ---ND�" 4_ =0 500= <br /> Ethanol ND 100 <br /> - Ethyl tert-butyl-ether- -- —- -- - - - - -- -ND- - - -1 00 - ---- = - - - - <br /> Methyl tert-butyl ether ND 100 <br /> Surrogate -Dtbromofluor�omethaneT -"-� - S 00 _ - 460-- - "- - 860=118" 92-0 <br /> Surrogate 1,2-Dichloroethane-d4 500 439 800-120 878 <br /> Surrogate Toluene-d8 500 447 880-110 894 <br /> Surrogate 4-Bromofluorobenzene 500 4 71 860-115 94 2 <br /> Blank 9010401-BLK2 <br /> Tert-amyl methyl ether 1/22/99 ND ug/1 1 00 <br /> Tert-butyl alcohol r ND 20 0 <br /> Di-isopropyl ether ND 1 00 <br /> 1,2-Dibromoethane`(EDB) ND 0 500 <br /> 1,2-Dichloroethane ND 0 500 <br /> Ethanol ND 100 <br /> Ethyl tert-butyl ether ND 1 00 <br /> Methyl tert-butyl ether ND 100 <br /> Surrogate Drbromofluoromethane 500 522 860-118 104 <br /> Surrogate 12-Dichloroethane-d4 500 506 800-120 101 <br /> Surrogate Toluene-d8 500 534 880-110 107 <br /> Surrogate 4-Bromofluorobenzene 500 554 860-115 Ill <br /> Sequoia Anaiytical -Petaluma *Refer to end of report for text of notes and definitions <br /> Page 17 of 20 <br />