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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 /> Analytical 819 Sinker 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 /> 11315 Sunrise Gold Circle St M Project Number 910-017 1 Received 10/7/98 <br />' Rancho Cordova,CA 95742 Project Manager Mike Mitchener Reported 10/16/98 <br /> Conventional Chemistry Parameters by APHA/EPA Methods/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. 8100145 Date Prepared, 10/12/98 Extraction Method, General Preparation <br /> Blank 8100145—BILK 1_ <br /> TRPH 10/13/98 ND mg/l 500 <br />' LCS 814Q145-13S3 <br /> TRPH 10/13/98 500 404 mg/l 700-130 808 <br /> i <br /> LC5 Du 8100145-BSD1 <br /> TRPH 10/13/98 500 408 mg/l 700-130 81 6 300 0 985 <br />' Batch 8100191 Date_Prcparizd. 10114198 Extraction Method, General Preparation <br /> Duplicate 8100191-DUP1 5810088-02 <br /> pH 10/14/98 793 8 07 pH Units 200 175 <br /> 1 <br /> Seuoia Analytical-Sacramento *Refer to end of report for text of notes and definitions <br /> AL� <br /> ,'daChneid , Laboratory Directo Page 12 of 13 <br />