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Sequo;ia " 680 Chesapeake Drive Redwood City,CA <br /> It 94' (415) 364-9600 FAX(415) 364-9233 <br /> I <br /> (D— .1 404 N.Wiget Lane Walnut Creek,CA 94J (510) 988-9600 FAX(510)988-9673 <br /> Analytical 819 Striker Avenue;Suite 8 Sacramento,CA 95834 (916) 921-9600 FAX(916)921-0100 <br /> lopments Client Project ID: 9-1452, Chevron 9-1452 . ........... <br /> Touchstone Devi? <br /> R. <br /> .'-,,,,.5807 Balboa Drive Matrix: Solid <br /> ",",Oakland, CA 94611 <br /> "'Attention: Robert Mallory Work Order#: 9509102 -01 Reported: Oct 5, <br /> 2": - . . . ....... <br /> ............. <br /> . ........ <br /> M...-I. . . ............ <br /> ......... <br /> QUALITY CONTROL DATA REPORT <br /> 4 <br /> Analyte: Benzene Toluene Ethyl Xylenes <br /> Benzene <br /> QC Batch#: GC092895BTEXEXC GCO92895STEXEXC GCO92895BTEXEXC GCO92895BTEXEXC <br /> Analy. Method: EPA 8020 EPA 8020 EPA 8020 EPA 8020 <br /> Prep. Method: EPA 5036 EPA 5030 EPA 5030 EPA 50,30 <br /> Ei <br /> Analyst: G.Garcia G.Garcia <br /> G.Garcia G.Garcia <br /> MS/MSD <br /> - 9509063113 950906313 SSMD6313 9509D6313 <br /> Sample Conc.: N.D. N.D. N.D. N.D.- <br /> Prepared Date: 9/28/9 9/28/95 9/28/96 9/28/95 <br /> Analyzed Date". 9/28/95: 9/28/95 9/28/95 9/28/95 <br /> Instrument J.D.#, GCHP1: GCHP1 GCHP1 <br /> GCHP1 <br /> Conc. Spiked:; 0.20 mg/Kg 0.20 mg/K9 0.20 mg/Kg 0.60 mg/Kg <br /> Result! <br /> 0.16 1� 0.16 0.16 0.49 <br /> :j <br /> MS %Recovery4 80 80 80 82 <br /> Dup. Result 0.16 0.16 0.16 0.48, <br /> MSD % Recov.: 80 80 80 60 <br /> RPD: 0.0 0.0 0.0 2.1 <br /> RPD Limit; 0-50 0-50 0-50 0-50 <br /> J <br /> ............ ....... <br /> ... .. ... ...... <br /> ... ........ <br /> ............. <br /> . ........ 0m, ..... . ..... ..... . <br /> ............ <br /> LCS <br /> Prepared Date:: <br /> Analyzed Date: <br /> Instrument I.D.#:- <br /> Conc. Spiked: <br /> LCS Result:` <br /> LCS % Recov.: <br /> MS/MSD <br /> LCS <br /> Control Limits 55-145 47-149 47-155 56-140 <br /> Please Note: <br /> The LCS is a control sample of known,interferent-free matrix that is analyzed using the same reagents, <br /> SE IIJOIA ANALYTICAL preparation,and analytical methods employed for the samples. The matrix spike is an aliquot of sample <br /> UC <br /> fortified with known quantities of specific compounds and subjected to the entire analytical pro <br /> cedure. H <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 /> Mar X-dargasacc'lhi <br /> Project Manager MS Matrix Spike, MSD MS Duplicate, RPD Relative%Difference <br /> 9509102.TTT <1> <br />