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680 Chesapeake Drive Redwood City CA 94063 (650)36400 96FAX(650)3649233 <br /> Sequoia 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(9t6)921-0100 <br /> Analytical 1455 McDowell Blvd North Ste D Petaluma CA 94954 (707)792-1865 FAX(707)792-0342 <br /> 1551 Industrial Road San Carlos CA 94070-4111 (650)232-9600 FAX(650)232-9612 <br /> ttle- Ryan,hie -Dublin Project Unocal <br /> 6747 Sierra Court Suite J Project Number Former Unocal#0123 Reported <br /> Dublin CrA,94568 Project Manager Deanna L Hardmg 04-Oct-99 10 17 <br /> Diesel Hydrocarbons (C9-C24) with Silica Gel Cleanup by DHS LUFT - Quality Control <br /> Sequoia Analytical -Walnut Creep <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch 9123007 Prepared 23-Sep-99 Usmg EPA 3510B <br /> LCS(9123007-BSI) <br /> Diesel Range Hydrocarbons 527 50 ug/I 500 I05 35-125 <br /> Surrogate n-Pentacasane 233 333 700 50-140 <br /> LCS Dup (9123007-BSD1) <br /> Diesel Range Hydrocarbons 434 50 ugll 500 868 35-125 194 50 <br /> Surrogate wFentacosane 183 11333 550 50-140 <br /> Sequoia Analytical- Walnut Creek The rv%ulri in tin r report apply to the urnple%anal ed tnuecordunce widh dx,clran of <br /> curtody document Thry analvixid report muir be reprrxluced rn itr enrfrvn <br /> �m a Cg ley, roJttt r Page 13 of 16 <br /> u 6 <br /> t� <br />