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680 Chesapeake Drive Redwood Cfty CA 94063 (650)364-9600 FAX(650)364-9233 <br /> lll\ r 404 N Wiget Lane Walnut Creek.CA 94598 (925)988-9600 FAX(925)988-9673 <br /> r �� ,{ �a�Y/,.�yC�11 819 Straker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX ! 9 1-010 <br /> # � 1455 McDowell Blvd North Ste D Petaluma,CA 94954 (707)792-1865 FAX(707)792-0342 <br /> laine Technical Services,Inc Project Shell Oil Co Sampled 1/19/99 <br /> 1680 Rogers Ave Project Number 341 E Main,Ripon/990119-J3 Received 1/22/99 <br /> San Jose,CA 95112 Project Manager Fran Thie Reported 2/2/99 <br /> Volatile Organic Compounds by EEA Method 8260B/Quality Control <br /> Sequoia Analytical-Petaluma <br /> Date Spike Sample QC Reporting Limit Recov RPD RPD <br /> lAnal_vt_q__ Analyzed Level Result Result Units Recov Limits % Limit % Not <br /> Batch 9010561 Date Prepared 1129/99 Extraction Method EPA 5030 waters <br /> Blank 9010561-BLK1 <br /> Tert-amyl methyl ether 1/29/99 ND ug/l 100 <br /> 'Pert-butyl alcohol 11ND " 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 tert-butyl ether ND 100 <br /> Surrogate Dibromofluoromethane or 5 00 520 FF860-118 104 <br /> Surrogate 1,2-Dachloroethane-d4 to500 5 04 or800-120 101 <br /> Surrogate Toluene-d8 500 517 or880-110 103 <br /> Surrogate 4-Bromofluorobenzene 5 00 548 860-115 110 <br /> ank 9010561-BLK2 <br /> amyl methyl ether 2/1/99 ND ug/l 100 <br /> ert-butyl alcohol 11ND 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 1 00 <br /> Methyl tent-butyl ether ND 1 00 <br /> Surrogate Dabromofluoromethane S 00 5 10 " 86 0-118 102 <br /> Surrogate 1,2-Dachloroethane-d4 5 00 5 21 80 0-120 104 <br /> Surrogate Toluene-d8 500 <br /> 520 <br /> 88 0-110 104 <br /> Surrogate 4-Bromofluorobenzene 500 516 or860-115 103 <br /> r <br /> LCS 9010561-BS1 <br /> Methyl tert-butyl ether 1/29/99 5 00 5 15 ug/I 700-130 103 <br /> Surrogate Dibromofluoromethane to5 00 5 11 or <br /> 860-118 102 <br /> Surrogate 1,2-Dachloroethane-d4 10500 497 or800-120 994 <br /> Surrogate Toluene-d8 fr500 5 02 880-110 100 <br /> Surrogate 4-Bromofluorobenzene or 500 535 860-113 107 <br /> LCS 9010561-BS2 <br /> Methyl tert-butyl ether 2/1/99 500 542 ug/1 700-130 108 <br /> Surrogate Dibromofluoromethane if500 506 or860-118 101 <br /> 1 7-Dirhlnroethane-d4 or 500 507 fo800-120 101 <br /> Surrogate Toluene-d8 of500 5 08 880-110 102 <br /> Surrogate 4-Bromofluorobenzene of5 00 5 28 IP860-115 106 <br /> uoia Analytical-Petaluma *Refer to end of report for text of notes and definitions <br /> Page I 1 of 13 <br />