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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)364-9233 <br /> 9!D 404 N Wiget Lane Walnut Creek CA 94598 (510)988-9600 FAX(510)988-9673 <br /> Analytical 819 Striker Avenue Suite 8 Sacramento CA 9SS34 (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 /> • <br /> Cambria Environmental Tech Client Project ID Shell 1071 N Main, Manteca <br /> 1144 65th St, Ste C Matrix Solid <br /> Oakland, CA 94608 <br /> Attention Paul Warte Work Order# 9803J55 02, 03 Reported Apr 13, 1998 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte Fraction Organic <br /> Carbons <br /> OC Batch- IN040298WB00A <br /> Anally. Method Walkley-Black <br /> Prep Method <br /> Analyst. K Cesar <br /> I <br /> Duplicate <br /> Sample#- 98OWS710 <br /> Prepared Date 4/2/98 <br /> Analyzed Date 4/2/98 <br /> Instrument I D # MANUAL <br /> Sample <br /> Concentration 0 047 <br /> Dup Sample <br /> Concentration 0 051 <br /> RPD- 82 <br /> RPD Limit: 0-20 <br /> Irl <br /> UOIA ANALYTICAL <br /> Richard Herli <br /> Project Manager **RPD=Relative%Difference 9803J55 CCC <1> <br />