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(� u�ia 680 Chesapeake Drive Redwood City,CA 940 (415) 364-9600 FAX(415) 364-9233 <br /> J 404 N.Wiget Lane Walnut Creek,CA 9459a (510) 988.9600 FAX(510)988.9673 <br /> Analytical 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 921.9600 FAX(916)921-0100 <br /> Tient Pro'ect ID: Shelf-404-47' 28 <br /> Cambria Environmental Matrix: 1 Solid <br /> 1.144 65th Street Ste C <br /> Oakland, CA 94608 Reported. Aug 19, 1996 <br /> Attention: Paul Waite OC Sample Group 6081147 148 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte: Benzene Toluene Ethyl Xylenes Lead <br /> Benzene <br /> QC 13atch.f#: SP081996 SP081996 SP081996 SP081996 ME081996 <br /> 8020EXA 8020EXA 8020EXA 8020EXA 601OMDA <br /> Analy. Method: EPA 8020 EPA 8020 EPA 8020 EPA 8020 EPA 7420 <br /> Prep. Method: EPA 5030 EPA 5030 EPA 5030 EPA 5030 EPA 3050 <br /> Analyst S.Ghullakorn S.Chullakorn S.Chuliakorn S.Ghullakorn T.Le <br /> MS/MSD.##: 6081147 6081147 6081147 6081147 6081147 <br /> Sample Conc.: N.D. <br /> N.D. N.D. N.D. N.D. <br /> Prepared Date: 8/19/96 8/19/96 8/19/96 8/19/96 8/19/96 <br /> Analyzed Date: 8/19/96 8/19/96 8/19/96 8/19/96 8/19/96 <br /> HP-5 HP-5 HP-5 MV-1 <br /> Instrument I.D.#: HP-5 k 0,40 mg/kg 1.2 mg/kg 50 mg/kg <br /> Cone. Spiked: 0,40 mg/kg 0.40 mg/kg <br /> 0.32 0.32 0,96 48 <br /> Result: 0.33 80 96 <br /> MS %Recovery: 83 80 80 <br /> Dup. Result: 0.36 <br /> 0.35 0.36 1.1 48 <br /> MSD% Recov.: 90 88 90 92 96 <br /> 14 0.0 <br /> 9.0 12 <br /> RPD: 8.7 <br /> RPD Limit: 0-20 0-20 D-20 0-20 0-20 <br /> LCS #: 5LCS081996 5LCS081996 5LCS081996 5LCS081996 LCS081996 <br /> Prepared Date: 8/19/96 8/19/96 8/19/96 8/19/96 8/19/96 <br /> Analyzed Date: 8/19/96 8/19/96 8/19/96 8/19/96 8/19/96 <br /> HP-5 HP-5 HP-5 MV-1 <br /> Instrument I.D.#: HP-5 20pg/L 6D Ng/l. 50 mg/kg <br /> Cone. Spiked: 20Mg/L 20Vg/t <br /> 18 55 53 <br /> LCS Result: 19 18 92 53 <br /> LCS % Recov.: 95 90 90 <br /> 06 <br /> LCS 50-150 50-150 50-150 50-150 80-120 <br /> Control Limits <br /> Please Note: <br /> The LCS is a control sample of known,interferent-free matrix that is analyzed using the same reagents, <br /> SEQUOIA ANALYTICAL, #1271 preparation,and analytical methods employed for the samples. The matrix spike is an aliquot of sample <br /> fortified with known quantities of specific compounds and subjected to the entire analytical procedure. If <br /> the recovery of analytes from the matrix spike does not fall within specified control limits due to matrix <br /> interference,the LCS recove I is to be used to validate the batch. <br /> Kenneth L. Wimer **MS=Matrix Spike,MSD=MS Duplicate,RPD=Relative%Difference <br /> Project Manager 6081147.CAM <3> <br />