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r+1 n <br /> Sequoia 680 Chesapeake Dnve Redwood City CA 94063 (415) 364-%00 FAX(415) 364 9233 <br /> ,!D1900 Bates Avenue Suite L Concord,CA 44520 (510) 686-9600 FAX(510)686 9689 � <br /> yAnalytical 819 Stnker Avenue Suite 8 Sacramento CA 95834 (916) 921-9600 FAX(9 16)921.0100 <br /> RESNA �w Client Project ID 3800910,Stockton Fire#2 <br /> {1710 Main Street Matrnc UQUID <br /> Pscalon, CA 95320 v <br /> Attention John Lane Work Order# 9412137-01 Reported _ Jan 13, 1995 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte: Benzene Toluene Ethyl Xylenes <br /> Benzene <br /> OC Batch#: GCO10695BTD 06A GC010695BTE)(WA GC010695BTO(WA GCO10695BTEXOSA <br /> Analy. Method: EPA 8020 EPA 8020 EPA 8020 EPA 8020 <br /> Pre . Method: N/A N/A N/A N/A <br /> Analyst: C Donohue C Donohue C Donohue C Donohue <br /> MS/MSD#: 941213501 941213501 941213501 941213501 <br /> Sample Conc.: N D ND ND ND <br /> Prepared Date: N/A N/A N/A N/A <br /> Analyzed Date: 1/6/95 1/6/95 1/6/95 1/6/95 <br /> Instrument I.D.#: GCHP6 GCHP6 GCHP6 GCHP6 <br /> Conc. Spiked: 10Ng/L 10pg/L 1opg/L 30Ng/L <br /> Result: 11 10 11 31 <br /> MS% Recovery: 110 100 110 103 <br /> Dup. Result: 90 86 87 25 <br /> MSD%Recov.: 90 86 87 83 <br /> RPD: 20 15 23 21 <br /> RPD Limit: 0-50 0-50 0.50 y C 0--50 <br /> h „b.>ati}..a+�wl h;�;S,;`2 sRQ� ,c"c�,]<`.+� ;h, �' x�r'a v�{ x ° � Yab.`Jo.•x 'd6.cx�-6"F � <br /> LCS#: BLK010595 BLK010595 BLK010595 BLK010595 <br /> Prepares! Date: 1/6/95 1/6/95 1/6/95 1/6/95 <br /> Analyzed Date: 1/6/95 1/6/95 1/6/95 1/6/95 <br /> Instrument I.D.#:_ GCHP6 GCI-M GCHP6 GCHP6 <br /> Conc.Spiked:- lopg/L 1opg/L 10pg/L 30pg/L <br /> LCS Result: 10 10 10 31 <br /> LCS%Recov.: 100 100 100 103 <br /> LCS 71-133 72-128 72-130 71-120 <br /> Control Limits <br /> Please Note <br /> The LCS is a control sample of known,interfereni-free matrix that is analyzed using the same reagents, <br /> SEQUOIA ANALYTICAL preparation,and anafyliical methods employed for the samples The matrix spike is an aliquot of swnP 0 <br /> loob with known quantities of specific oompounds and subjected to the entire anakftal procedure <br /> Avad— the recovery of analytes from the matrix spike does not tall within specified control limits due to rrLstft <br /> interkwence,the LCS recovery is to be used to validate the batch <br /> Vickie Tague Clark <br /> Project Manager "MS-Matrix Spike,MSD-MS Duplicate,RPD-Palative%Difference 9412137 WAT t2> <br />