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y 680 Chesapeake Drive Redwood City CA 94063 {650) 364-%00 FAX(650)364-9233 <br /> Sequoia <br /> 404 N Wiget Lane Walnut Creek CA 94598 (925)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 707 792-0342 <br /> Blaine Technical Services,Inc Project She]]Oil Co Sampled 1/26/99 <br /> 1680 Rogers Ave Project Number 141 N El Dorado, Stockton/990126-S2 Received 2/2199 <br /> San Jose,CA 95112 Project Manager Fran Thie Reported 2/12199 <br /> Volatile Organic Compounds by EPA Method 8010E/Quality Control <br /> Sequoia Analytical-Petaluma <br /> Date Spike Sample QC Reporting Limit Recov RPD RPD <br /> lAnalyte Analyzed Level Result Result Units Recov Limits % Limit % Notes* <br /> LCS 9020100-BS3 <br /> Chlorobenzene 2/5/99 100 9 72 ug/1 972 <br /> 1,I-Dichloroethene 100 940 940 <br /> Trichloroethene 100 897 89 7 <br /> Surrogate Bromochloromethane 300 270 900 <br /> Surrogate 1,4-Drchlorobutane 300 279 93 0 <br /> Matrix Spike 9020100-MSI P901485-10 <br /> Chlorobenzene 214199 200 ND 194 ug/1 970 <br /> 1,1-Dichloroethene 200 ND 203 102 <br /> Trichloroethene 200 342 519 885 <br /> Surrogate Bromochloromethane 600 640 107 <br /> Surrogate 1,4-Drchlorobutane 600 592 98 7 <br /> x S ip ke Dup 9020100-MSD1 P901485-10 <br /> benzene 2/4199 200 ND 193 ug/1 965 0 517 <br /> 1,1-Dichloroethene 200 ND 197 985 349 <br /> Trichloroethene 200 342 503 805 947 _ <br /> Surrogate Bromochloromethane 600 556 92 7 <br /> Surrogate 1 4-Dichlorobutane 600 538 897 <br /> Sequoia Analytical-Petaluma *Refer to end of report far text of notes and definitions <br /> Page 9 of 10 <br />