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680 Chesapeake Drive Redwood Clty CA 94063 (650)364-9600 FAX(650)364-9233 <br /> Sequoia <br /> 404 N Wiget lane Walnut Creek.CA 94598 (915)988-9600 FAX(925)988-9673 <br /> 8l9 Striker Avenue,Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <br /> 14W Analytical <br /> 1455 McDowell Blvd North Ste D Petaluma.CA 94954 (707)792-1865 FAX(707)792-0342 <br /> Gettler Ryan/Geostrategles Client Project ID Unocal 2859, 280054 <br /> 6747 Sierra Court, Ste J Matrix Liquid <br /> Dublin, CA 94568 <br /> Attention Deanna Harding Work Order# 9809003 01-10 Reported Sep 22, 1998 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte Gasoline <br /> QC Batch# 98090075 <br /> Analy Method EPA 8015M/8020M <br /> Prep Method <br /> Analyst N A <br /> MS/MSD # BLK090498 <br /> Sample Cone N D <br /> Prepared Date 9/4/98 <br /> Analyzed Date 9/4/98 <br /> Instrument I D # NA <br /> Cone Spiked 1000}ig/L <br /> Result 948 <br /> .MS % Recovery 948 <br /> Dup Result 1020 <br /> MSD % Recov 102 <br /> RPD 732 <br /> RPD Limit 0-12 <br /> LCS # LCS090498 <br /> Prepared Date 9/4/98 <br /> Analyzed Date 9/4/98 <br /> Instrument I D # NA <br /> Cone Spiked 1000 fig/L <br /> LCS Result 1020 <br /> LCS % Recov 102 <br /> 53 146 <br /> LCS 79-127 <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 /> �EQUOIA ANALYTICAL preparation,and analytical methods employed for the samples The matrix spike is an aliquot of sample <br /> FLAP#2245 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 /> Tod Granicher <br /> Project Manager *`MS=Matrix Spike,MSD=MS Duplicate,RPD=Relative%Difference 9809003 GET <1> <br />