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i <br /> Sequoia 680 Chesapeake Drive Redwood C{ry,CA 94063 (415) 364 9600 FAX(415)364 9233 <br /> • . � 1900 Bates Avenue Suite L Concord,CA 94520 (510) 6e6 4600 i FAX(SIQ)686 9689 <br /> Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916)921 010o <br /> Canonte Environmental Client Project ID n 94-312, Chevron Stockton nr x.x v nv n <br /> 1710 Main Street Matrix Liquid <br /> Escalon, CA 95320 <br /> Attention John Lane Work Order# 9502367 -01-04 Reported Mar 9, 1995 <br /> .{{ { <br /> QUALITY CONTROL DATA REPORT <br /> Analyte. Benzene Toluene Ethyl Xylenes Diesel <br /> Benzene <br /> OC Batch#: GCO21195BTEX06A GCO21195BTE(DBA GCO21195STDMA 00O21195BTBW G00214950HBPEXA <br /> Ana ly. Method: EPA 8020 EPA 8020 EPA 802D EPA 8020 EPA 8015M <br /> Prep. Method: N/A N/A N/A N/A EPA 3510 <br /> Analyst: A.Marald A Marald A.Maralit A.Maralit B Ali <br /> MS/MSD#: 9502367o1 950236701 950236701 950236701 950258902 <br /> Sample Conc.: N D N D N D N D N D <br /> Prepared Date. N/A N/A N/A N/A 2/14/95 <br /> Analyzed Date: 2/11/95 2/11/95 2/11/95 2/11/95 2/16/95 <br /> Instrument l.D.#: GCHP6 GCHP6 GCHP6 GCHP6 GCHP4 <br /> Conc Spiked: toNg/L 10u9/1- 10pg/L 30pg/L 600frg/L <br /> Result. 10 10 10 30 570 <br /> MS%Recovery: 100 too too 100 95 <br /> Dup. Result: 93 87 90 26 590 <br /> . MSD% Recov.: 93 87 90 87 98 <br /> RPD: 73 14 11 14 34 <br /> RPD Limit: 0-50 0.50 0-50 0-50 0-50 <br /> '"C}{�rwvx.v`iso:;yv1 1 � y�y90Wt^x niov?k4 d'#her x\' M`+�^ b�.d$!d'M'�Cr r{'rixti''M L'J''i4CVJd r•3 p.,. xy.v}fi}rL{192%�$�vyhls+�+3 din+jy h+vh+iv.��'v +]]13ut.. <br /> ;R }+ <br /> LCS#: BLK021195 BLK021195 BLK021195 BLK021195 BLK021495 <br /> Prepared Date: 2/11/95 2/11/95 2/11/95 2/11/95 2/14/95 <br /> Analyzed Date: 2/11/95 2/11/95 2/11/95 2/11/95 2/15/95 <br /> Instrument I.D.#: GCHP6 GCHP6 GCHP5 GCHP6 GCHP5 <br /> Conc.Spiked: 10jug/L 1opg/L 10 jtg/L 30,ug/L 600 Ng/L <br /> LCS Result: 92 92 93 27 540 <br /> LCS %Recov.: 92 92 93 90 90 <br /> LCS 71-133 72-128 72-130 71-120 38.122 <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 /> SEOUOI AL CAL preparation,and analytical methods employed for the samples The matnx spike is an aliquot of sample <br /> fortrfied with known quantities of specific compounds and subjected to the entire analytical procedure 9 <br /> the recovery of analytes from the matrix spike does not fall within specrfied control limits due to matrix <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=Relattve%Difference 9502367 CAN <1> <br />