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• ~ Sequoia 680 Chesapeake Drive Redwood City CA 94063 (415) 364 9600 FAX(415) 364 9233 <br /> (1) 1900 Bates Avenue Suitc L Concord,CA 94520 (510) 686-9600 FAX(510)686 9659 <br /> Analytical 819 Stnker Avenue Suite 8 Sacramento CA 95834 (916) 921-9600 FAX(916)921 0100 <br /> RESNA Client Project ID" Y 38009 10, Stockton Fire#2 <br /> 1710 Main Street Matrix UQUID <br /> Escalon, CA 95320 <br /> Attention John Lane Work Order#- 9412137-03 _ Reported Jan 13, 1995 <br /> v�vii ryY'hrr4 l 44ir.+*^Yr�{.t{J ?SNpC.'rn'r <br /> . .. t4„`vc , ,-,w.nt`t H ,�. . r,� ., ;,,. r....}.,,..r44._,-v t`,v.,r.,,�'' c:,•:t'"a:resh�7�:>�3.,;r.`'Y,M�L<wtx r4`A;'.�'.{v..n.$.,,;w_cSG:;,'"`..�,.^eGanoLs:,:,. <br /> QUALITY CONTROL DATA REPORT <br /> Analyte: Benzene Toluene Ethyl Xylenes <br /> Benzene <br /> QC Batch#: GCo11095BTE)WA GCO110958TEX07A GCO11095BTEX07A GC011095BTEX07A <br /> Analy. Method: EPA 80217 EPA 8= 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#: 950114304 950114304 950114304 950114304 <br /> Sample Conc.: N D N D N D N D <br /> Prepared Date: N/A N/A N/A N/A <br /> Analyzed Date: 1/10/95 1/10/95 1/10/95 1/10/95 <br /> Instrument I.D.#: GCHP7 GCHP7 GCHP7 GCHP7 <br /> Conc. Spiked: 10Ng/L 10pg/t- 10jug/L 3opg/L <br /> Result: 88 as 90 27 <br /> MS% Recovery: as a9 90 90 <br /> Dup. Result: 88 89 90 27 <br /> MSD%Recov.: as 89 so 90 <br /> RPD: 00 00 00 00 <br /> RPD Limit: 0.50 0-50 0-50 0.50 <br /> LCS#: - - - <br /> Prepared Date: - - - <br /> Analyzed Date: - - - - <br /> Instrument I.O.#:- - - - <br /> Conc. Spiked: - - - - <br /> LCS Result: - - - <br /> LCS%Recov.: - - - <br /> LCS 71-133 72-128 72130 71-120 <br /> Control Limits <br /> Please Nate <br /> The LCS is a control sample of known,interferent-free matrix that is analyzed using the same raapenta, <br /> SEQUOIA ANALYTICAL preparation,and analytical methods employed for the samples The matrix spike is an aliquot of sample <br /> forlified with known quantities of specific compounds and subjected to the entire analytical procedure s <br /> /} to recovery of analytes from the matrix spike does not fall within specified control limits due to matrix <br /> V 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 e-4 <br />