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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 (925)988-9600 FAX(925)988-9673 <br /> 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921 9600 FAX(916)921-010 0 <br /> Analytical 1455 McDowell Blvd North Ste D Petaluma,CA 94954 (707)792 1865 FAX(707)792-0342 <br /> Blaine Tech/Chevron Project Chevron Sampled 3/5/99 <br /> 1680 Rogers Ave Project Number 9-82641990305-J3 Received 3110/99 <br /> San Jose,CA 95112 Project Manager Christine Lillie Reported 4/5/99 <br /> Volatile Organic Compounds by EPA Method 801013/Quality Control <br /> Sequoia Analytical-Petaluma <br /> Date Spike Sample QC Reporting Linut Recov RPD RPD <br /> Analyte <br /> Analyzed Level Result Result Units Recov Limits % Limit % Notes" <br /> LCS(continued) 9030182-BS4 _ <br /> Surrogate Bromochloromethane W 3110199 300 266 ug/l W 88 7 <br /> Surrogate 1 4-Drehlorobutane " 300 281 93 7 <br /> LCS 9030182-BS5 <br /> Chlorobenzene 3/11/99 10 0 9 44 ug/l 944 <br /> 1 1-Dichloroethene 10 0 906 906 <br /> Trichloroethene __ 100 944 94 4 <br /> Surrogate Bromochloromethane 300 264 88 0 - <br /> Surrogate 1 4-Dtchlorobulane 300 27 1 903 <br /> Matrix Spike 9030182-MSI P903107-01 <br /> Chlorobenzene 3/5/99 100 ND 957 ug/l 957 <br /> 1 I-Dichloroethene 10 0 ND 957 957 <br /> Trichloroethene _ 1_0 0 ND 957 957 <br /> Surrogate Bromochloromethane ,I 30 0 26 7 890 <br /> Surrogate 1 4-Dichlorobutane 300 27 1 903 <br /> Matrix Spike Duo 9030182-MSDI P903107-01 <br /> Chlorobenzene 315/99 100 ND 960 ug/l 960 0 313 <br /> 1,l-Dichloroethene 100 ND t0 0 100 439 <br /> Tnchloroethene _ __ 10 0 ND__ 9 85 _ 985 2_88 <br /> Surrogate Bromochloromethane 300 28 3 94 3 <br /> Surrogate 14-Dichlorobutane 300 296 98 7 <br />.Sequoia Analvtical- Petaluma *Refer to end of report for ter/of notes and definuions <br /> i <br /> Page 18 of 23 <br />