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® 6801sapeake Drive Redwood City,CA 9400 (650)364-9600 FAX(650)364-9233 <br /> Sequoia 404 N.Wiget Lane Walnut Creek,CA 94598 (925)988-9600 FAX(925)988-9673 <br /> 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916)921-9600 FAX(916)921-0100 <br /> Analytical 1455 McDowell Blvd.North,Ste.D Petaluma,CA 94954 (707)792-1865 FAX(707)792-0342 <br /> Blaine Tech Services Client Project ID: Texaco 305 S. Hutchins <br /> 1680 Rogers Ave. <br /> San Jose, CA 95112 <br /> Attention: Fran Thie QC Sample Group: 9810726-01-03 Reported: Oct 22, 1998 <br /> QUALITY CONTROL DATA REPORT <br /> Matrix: Liquid <br /> Method: EPA 8015A <br /> Analyst: A. PORTER <br /> ANALYTE Diesel <br /> QC Batch#: GC1013980HBPEXZ <br /> Sample No.: 9810726-1 <br /> Date Prepared: 10/13/98 <br /> Date Analyzed: 10/16/98 <br /> Instrument I.D.#: GCHP413 <br /> Sample Conic., ug/L: 160 <br /> Conic.Spiked, ug/L: 1000 <br /> Matrix Spike, ug/L: 980 <br /> % Recovery: 82 <br /> Matrix <br /> pike Duplicate,ug/L: 880 <br /> %Recovery: 72 <br /> elative% Difference: 13 <br /> RPD Control Limits: 0-50 <br /> LCS Batch#: BLK101398ZS <br /> Date Prepared: 10/13/98 <br /> Date Analyzed: 10/16/98 <br /> Instrumentl.D.#: GCHP4B <br /> Conc.Spiked, ug/L: 1000 <br /> Recovery,ug/L: 700 <br /> LCS%Recovery: 70 <br /> Percent Recovery Control Limits: <br /> MS/MSD 50-150 <br /> LCS 60-140 <br /> QualityAs ran Statement: All standard operating procedures and quality 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 /> • SE 01 ANA YTICAL 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 recovery is to be used to validate the batch. <br /> ggy nner <br /> P Ie anager <br />