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Fr <br /> Sequoia 680 Chesapeake Drive Redwood C ty.CA 94063 (650)364-9600 FAX(650)364-9233 <br /> 404 N.Wlger Lane Walnut Creek.CA 94598 (925)988-9600 FAX(925)988-9673 <br /> Analytical 819 Striker Avenue,Suite 8 Sacramento.CA 95834 (916)921-9600 FAX(916)921-0100 <br /> 1455 McDowell Blvd.North.Ste.D Petaluma.CA 94954 (707)792-1865 FAX(707)792-0342 <br /> II i` <br /> e er _:.:.....,.... <br /> :} yan/Geostrategres Client Pro t=ct l© Tos`0, <br /> ;x6747 Sierra Court, Ste J j c ,8203 E.h#'1th <br /> - ria Matroc: Liquid >°} <br /> . Dublin, CA 94568 <br /> i <br /> tt n <br /> e ti <br /> on: <br /> Deanna Hardin <br /> f Y 9 Work Order#: 9812066 06-09 Reported:ed: Dec _ <br /> QUALITY CONTROL DATA REPORT <br /> Analyte: Benzene Toluene Ethyl Xylenes BTEX as TPH <br /> Benzene <br /> OC Batch#: GC120998802002A GC120998802002A GC120998802002A GC120998802002A GC120998802002A <br /> Analy. Method: EPA 8020 EPA 8020 EPA 8020 EPA 8020 EPA 8015M <br /> Prep. Method: EPA 5030 EPA 5030 EPA 5030 EPA 5030 EPA 5030 <br /> Analyst: D.Newcomb D.Newcomb D.Newcomb D.Newcomb D.Newcomb <br /> MS/MSD #: 8120295 8120295 8120295 8120295 8120295 <br /> Sample Conc: 2.5 N.D N.D N.D N-D <br /> Prepared Date: 12/9/98 12/9/98 12/9/98 12/9/98 12/9/98 <br /> Analyzed Date: 12/9/98 12/9/98 12/9/98 12/9/98 12/9/98 <br /> Instrument I.D.#: HP2 HP2 HP2 HP2 HP2 <br /> Conc. Spiked: 20pg/L 20pg/L 20pg/L 60pg/L 320 pg/L <br /> Result: 18 18 21 61 310 <br /> MS% Recovery: 78 90 105 102 97 <br /> Dup. Result: 17 17 17 58 <br /> MSD % Recov.: 73 310 <br /> $5 85 97 97 <br /> RPD: 5.7 5.7 21.1 5.0 0.0 <br /> RPD Limit: 0-25 0-25 0-25 0-25 0-25 <br /> LCS#: LCS120998 LCS120998 LCS120998 LC812o998 LCS120998 <br /> Prepared Date: 12/9/98 12/9/98 12/9/98 12/9/98 12/9/98 <br /> Analyzed Date: 12/9/98 12/9/98 12/9/98 12/9/98 12/9/98 <br /> Instrument I.D.#: HP2 HP2 HP2 HP2 HP2 <br /> Conc. Spiked: 201ug/L 20pg/L 20pg/L 60pg/L 320 pg/L <br /> LCS Result: 17 16 18 57 310 <br /> LCS %Recov.: 85 80 90 95 97 <br /> LCS 70.130 70-130 70-130 70-130 50.150 <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 /> 7Tod <br /> A NALYTICAL preparation,and analytical methods employed for the samples. The matrix spike is an aliquot of sample <br /> 12 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 /> anicher Manager ""NIS=Matrix Spike,MSD MS Duplicate,RPD=Relative%Difference 9812066.GET <2> <br />