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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (415) 364 9600 FAX(415) 364 9233 <br /> 1900 gates Avenue Suite L Concord CA 94520 (510) 686 9600 FAX(510)686 9689 <br /> (D- Analytical 819 Stnk-Avenue Suite B Sacramento CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> t,,.,. r },. .yam r ,,, s t .�. r s.�mar y�„rc`YYw;., +wx�m+• tx. <br /> V~~RESNA <br /> Client Project ID 3880910, StocktonFire#2 <br /> 1710 Main Street Matrix LIQUID <br /> Escalort, CA 95320 <br /> Attention John Lane Work Order# 9412137-02,4-5 Reported: Jan 13 1995 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte: Benzene Toluene Ethyl Xylenes <br /> Benzene <br /> QC Batch#: GCO10995BTOMA GC0109%BTDMA GC0109958TD=A GC010995BTEXOSA <br /> Analy. Method: EPA 8020 EPA 8024 EPA 8020 EPA 8020 <br /> Prep Method: N/A N/A N/A N/A <br /> Analyst: C Donohue C Donohue C Donohue C Donohue <br /> MS/MSD#: 941213102 941213102 941213102 941213102 <br /> Sample Cone.: N D ND ND ND <br /> Prepared Date: N/A N/A N/A N/A <br /> Analyzed Date: 1/9/95 1/9/95 1/9/95 1/9/95 <br /> Instrument LD#: GCHP6 GCHP6 GCHP6 GCHP6 <br /> Cone. Spiked: 10Y9/L 10pg/L 10pg/L 30pg/L <br /> Result: 96 95 96 28 <br /> MS %Recovery: 96 95 96 93 <br /> Dup. Result: 95 95 95 28 <br /> MSD% Recov.: 95 95 95 93 <br /> RPD: 10 00 10 00 <br /> RPD Limit: 0-50 0-50 0-50 0-50 <br /> 3.� � �. r ? tw }r9{u die€ �i trC Y»� tb6cJk5R "Q. 3' Y4 <br /> [+C.p3trx� <br /> rk <br /> .e4.i.1`v�rryv+1�'JOPk+Q�b$C i�KiFi93C�H <br /> LCS#: - - - <br /> Prepared Date: - - - <br /> Analyzed Date: - - - <br /> Instrument E.D.#:- - - - - <br /> Cone. Spiked:- - - - <br /> LCS Result: - - - - <br /> LCS%Recov.: - - - <br /> LCS 71-133 72-128 72-130 71-120 <br /> Control Limits <br /> Nease Note <br /> The LCS is a control sample of known,interferent tree matrix that is analyzed using the same reagents, <br /> SEQUOIA ANALYTICAL 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 pmoedure If <br /> the recovery of analytes from the matrix spike does not fall within specified control limits due to nwbu <br /> interference,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=Relative%Difference 9412137 WAT t3> <br />