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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650) 364 9233 <br /> 404 N Wlget 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 />'Pacific Environmental Group-Sac Project Unocal 0123,Tracy,CA Sampled 10/6/98 <br /> 113 15 Sunrise Gold Circle St M Project Number 910-017 IA Received 10/7/98 <br /> Rancho Cordova,CA 95742 Project Manager Mike Mitchener Reported 10/16/98 <br /> Diesel Hydrocarbons(C10-C24)by DHS LUFT/Quality Control <br /> Sequoia Analytical-Sacramento - <br /> Date Spike Sample QC Reporting Limit Recov RPD RPD <br /> Analyte Analyzed Level Result Result Units Recov Limits % Limit % Notes* <br />'Batch. 8100079 nate Prepared. 10/8/98 ExtracBgn Method. EPA 3510B <br /> Blank 8100079-BLK1 <br /> Extractable Hydrocarbons 10/9/98 ND mg/1 00500 <br />'Surrogate Pentacosane ro 00400 00331 500-150 828 <br /> LCs 8100079-BS1 <br /> Extractable Hydrocarbons 10/9/98 1 00 1 14 mg/l 600-140 114 <br /> Surrogate Pentacosane 00400 00342 500-150 855 <br /> LCS Duo 81QO079-BSDI <br />'Extractable Hydrocarbons 10/9/98 1 00 1 15 mg/l 600-140 115 500 0 873 <br /> Surrogate Pentacosane 00400 00349 500-150 872 <br /> r <br /> Sequoia Analytical-Sacramento 'Refer to end of report for text of notes and definitions <br /> nda C Schneide , Laboratory Director Page 8 of 13 <br />