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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650) 364-9600 FAX(650)364-9233 <br /> 404 N Wiget Lane Walnut Creek CA 94598 (9Z5)988-9600 FAX(925)988-9673 <br /> Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX 916) 921-0100 <br /> 1455 McDowell Blvd North Ste D Petaluma,CA 94954 707 792-1865 FAX(701)792-0342 <br /> Cambria Environmental Project Shell Oil Co Sampled 1114/99 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 1/28/99 <br /> 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 /> Blank 9010401-BLK3 <br /> Tert-amyl methyl ether 1/25/99 ND ug/1 1 00 <br /> Tert-butyl alcohol ND 200 <br /> Di-isopropyl ether ND 100 <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 100 <br /> Methyl tent-butyl ether ND 1 00 <br /> Surrogate Dibromofluoromethane 500 5 04 860-118 101 <br /> Surrogate 12-Dichloroethane-d4 500 4 75 800-120 950 <br /> Surrogate Toluene-d8 5 00 524 880-110 105 <br /> Surrogate 4-Bromofluorobenzene 5 00 531 860-115 106 <br /> 9010401-BS1 <br /> Oyl tert-butyl ether 1122/99 5 00 4 81 ug/l 700-130 96 2 <br /> Surrogate Dibromofluoromethane 500 4 71 0, 860-118 94 2 <br /> Surrogate 12-Dichloroethane-d4 500 450 800-120 900 <br /> Surrogate Toluene-d8 500 450 880-110 900 <br /> Surrogate 4-Bromofluorobenzene Soo 4 78 860-115 95 6 <br /> LCS 9010401-BS2 <br /> Methyl tert-butyl ether 1/22/99 5 00 4 85 ug/1 700-130 970 _ <br /> Surrogate Dibromofluoromethane 5 00 5 03 860-118 101 <br /> Surrogate 12-Dichloroethane-d4 500 4 98 800-120 99 6 <br /> Surrogate Toluene-d8 500 529 880-110 106 <br /> Surrogate 4-Bromofluorobenzene 500 536 or860-115 107 <br /> LCS 9010401-BS3 <br /> Methyl tert-butyl ether 1/25/99 5 00 5 23 ug/1 700-130 105 <br /> Surrogate Dibromofluoromethane 500 527 860-118 105 <br /> Surrogate 1 2-Drchloroethane-d4 " 500 515 800-120 103 <br /> Surrogate Toluene-d8 115 00 525 880-110 105 <br /> Surrogate 4-.Bromofluorobenzene of 5 00 556 860-115 111 <br /> Matrix Spike 9010401-MSI P901184-06 <br /> Methyl tert-butyl ether 1/25199 5 00 ND 554 ug/l 700-130 111 <br /> Surrogate Dibromofluoromethane 11500 538 860-118 108 <br /> Surrogate 12-Drchloroethane-d4 It500 532 800-120 106 <br /> Surrogate Toluene-d8 500 527 880-110 105 <br /> Surrogate 4-Bromofluorobenzene 500 556 860-115 111 <br /> i <br /> Sequoia Analytical-Petaluma *Refer to end of report for text of nates and definitions <br /> Page l8 of 20 <br />