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Sp, 680 Cheoake Drive Redwood City,CA 94063 q6150)364-9600 FAX(650)364-9233 <br /> equoia 404 N.Wiget Lane Walnut Creek,CA 94598 (925)988-9600 FAX(925)988-9673 <br /> /� <br /> 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916)921-9600 FAX(916)921-0100 <br /> At7 ala}ical 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: 9810726-05 Reported: Oct 22, 1998 <br /> QUALITY CONTROL DATA REPORT <br /> Matrix: Liquid <br /> Method: EPA 8015 <br /> Analyst: NC/GR <br /> ANALYTE Gasoline <br /> QC Batch M GC101498BTEX21A <br /> Sample No.: GW9809186A <br /> Date Prepared: 10/14/98 <br /> Date Analyzed: 10/14/98 <br /> Instrument I.D.#: GCHP21 <br /> Sample Conc., ug/L: N.D. <br /> Conc.Spiked, ug/L: 250 <br /> Matrix Spike, uglL: 250 <br /> % Recovery: 99 <br /> Matrix • <br /> pike Duplicate, ug/L: 250 <br /> %Recovery: 99 <br /> elative% Difference: 0.0 <br /> RPD Control Limits: 0-25 <br /> LCS Batch#: GWLCS101498A <br /> Date Prepared: 10/14/98 <br /> Date Analyzed: 10/14/98 <br /> Instrument I.D.#: GCHP21 <br /> Conc.Spiked,ug/L: 250 <br /> LCS Recovery, ug/L: 230 <br /> LCS%Recovery: 93 <br /> Percent Recovery Control Limits: <br /> MS/MSD 60-140 <br /> LCS 70-130 <br /> Quality Assurance 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 /> S6 UOIA A AL CAL preparation,and analytical methods employed for the samples. The matrix spike is an aliquot of sample • <br /> (\/ fortiff€d 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 /> Peggy enner <br /> P(oject Manager <br />