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Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (415) 364.9600 FAX (415) 364-9233 <br /> 404 N.Viget Lane Walnut Creek,CA 94598 (510) 988.9600 FAX (510)998.9673 <br /> Analytical 819 Striktr Avcnuc,Suitt 8 Sacramento, CA 95834 (916) 921.9600 FAX (916)921-0100 <br /> 0. <br /> *T�C Chevron #9-0557'/'StockH. �'O' <br /> Stockton <br /> 4211 May Ave. Matrix: Liquid <br /> Wichita, KS 67209 <br /> Attention: Justin Ward QC Sample Group: 5120391 Reported: Dec 1 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte: Benzene Toluene Ethyl Xylenes <br /> Benzene <br /> QC 13atch#: OC121495 GC121495 GC121495 GC121495 <br /> 802002A 802002A 802002A 802002A <br /> Analy. Method: EPA 8020 EPA 8020 EPA 8020 EPA 8020 <br /> Prep. Method: <br /> Analyst: K Nill---- K Nitl K Nill K Nill <br /> MS/MSD #: 5120339 5120339 6120339 5120339 <br /> Sample Conc.: N.D. N.D. N.D. N.D. <br /> Prepared Date: 12/14/95 12/14/95 12/14/95 12/14/95 <br /> Analyzed Date: 12/14/95 12/14/95 12/14/95 12/14/95 <br /> Instrument I.D.#: HP.2 HP.2 HP.2 HP.2 <br /> Cone. Spiked: 20 pg/L 20yg/L 20 lig/L 60 jug/L <br /> Result: 22 22 23 69 <br /> MS % Recovery: 110 110 115 115 <br />• Dup. Result: 22 22 23 69 <br /> MSD % Recov.: 110 110 115 115 <br /> RPD: 0.0 0.0 0.0 0.0 <br /> RPD Limit: 0-20 0-20 0-20 0-20 <br /> . . .... ...................... . ...... .. <br /> .......... . <br /> .. . ...... <br /> ...... .. <br /> . ........ <br /> —2 n <br /> . <br /> LCS #: ILCS121495 ILCS121495 I LCS 121495 ILCS121495 <br /> Prepared Date: 12/14/95 12/14/95 12/14195 12/14/95 <br /> Analyzed Date: 12/14/95 12/14/95 12/14/95 12/14/95 <br /> Instrument I.D.#: HP.2 HP.2 HP.2 HP.2 <br /> Cone. Spiked: 20 pg/L 20p9/L 20)jg/L 60mg/L <br /> LCS Result: 21 21 22 65 <br /> LCS % Recov.: 105 105 110 108 <br /> Mb/M= <br /> LCS 71-13.3 72-128 72-130 71-120 <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 /> S,E UIQ:)IA, ANALYTICAL, 1#1122271 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 procedure. H <br /> the recovery of analytes from the matrix spike does not fait within specified control limits due if)matrix <br /> Ken t t I interference,the LCS recovery is to be used to validate the batch, <br /> iMermer M.S=Matrix Spike,MSD-MS Duplicate, RPD-Relative%31flerenoe <br /> Proj t Manager <br /> 5120391.GTW <2;, <br />