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7 O7 68. .�esapeake Drive Redwood City.CA 941 7 (650)364-9600 FAX(650)364-9233 <br /> Sequoia 404 N.Wiget lane Walnut Creek.CA 94598 (925)98$-9600 FAX(925)988-9673 <br /> Analytical 819 Striker Avenue,Suite 8 Sacramento,CA 95834' (916)921-9600 FAX(916)92t-0100 <br /> 1455 McDowell Blvd.North,Ste.D Petaluma,CA 94954 (707)792-1865 FAX(707)792-0342 <br /> 1551 Industrial Road San arlos,CA 94070-4111 (650) 232-9600 FAX(650)232-9612 <br /> ATC Associates Client Project ID: S SD-Edison High School <br /> 1 1 17 Lone Palm Avenue <br /> F <br /> odesto, CA 95351-1502 <br /> ttention: Tom Lutterman QC Sample Group: 9902A36-04-07 Reported: Mar 1, 1999 <br /> [ QUALITY CONTROL DATA REPORT <br /> Matrix: Solid <br /> Method: EPA 8015M <br /> Analyst: A. PORTER <br /> t <br /> ANALYTE Diesel <br /> QC Batch #: GCO223990HBPEXB <br /> Sample No.: 9902A36-06 <br /> Date Prepared: 2123199 <br /> Date Analyzed: 2125199 <br /> Instrument I.D.#: GCHP4B <br /> Sample Cone., mglKg: N.D. <br /> + Cone. Spiked, mg/Kg: 17 <br /> Matrix Spike, mglKg: 13 <br /> % Recovery: 76 <br /> �f Matrix <br /> Spike Duplicate, mglKg: 14 <br /> % Recovery: 82 <br /> t <br /> Relative % Difference: 7.6 <br /> RPD Control Limits: 0-50 <br /> LCS Batch#: BLK0223998S <br /> Date Prepared: 2123199 <br /> Date Analyzed: 2125199 <br /> Instrument I.D.#: GCHP4B <br /> Conc. Spiked, mglKg: 17 <br /> Recovery, mglKg: 13 <br /> LCS % Recovery: 76 <br /> Percent Recovery Control Limits: <br /> nnSlrvlSD 50-150 <br /> ccs 60-140 <br /> Quality Assurance Statement: All standard operating procedures and qualit control requirements have been met. <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 preparation,and analytical methods employ A 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 recovery is to be usec to validate the batch. <br /> KaImyE <br /> "J ,t Managea�r <br /> i <br />