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+ Sequoia 680 Chesapeake Dnvc Redwood City,CA 94063 (415) 364 9600 FAX(415) 364 9233 <br /> 404 N Wiget Lane Walnut Creek CA 94598 (510) 988 9600 FAX(510)988 9673 <br /> �7 Analytical 819 Stnker Avenue,Suite 8 Sacramento,CA 95834 (916) 921-9600 FAX(916)921 0100 <br /> rrrr <br /> Blaine Tech $ervlces, Inc{ Client Project ID 4Chevron 9-8632 f 970107-zi <br /> 1680 Rogers Avenue Matrix Liquid <br /> San,lose, CA 95112 <br /> SAttentlon Fran Thie Work Order# 9701244-04 Reported Jan 16, 1997 <br /> 4 Srn i`{ .} ♦ s } ' } ♦ r y r r ♦ } r r s n <br /> v rvYJ " v s v v♦ n . r ♦ n . + <br /> QUALITY CONTROL DATA REPORT <br /> Analyte. Benzene Toluene Ethyl Xylenes <br /> Benzene <br /> OC Batch#' GCO11397BTEX18A GCO11397BTEX18A GCO11397BTEX18A G0011397BTEX18A <br /> Analy Method. EPA 8020 EPA 8020 EPA 8020 EPA 8020 <br /> Prep. Method. EPA 5030 EPA 5030 EPA 5030 EPA 5030 <br /> Analyst. R Geckler R Geckler R Geckler R Geckler <br /> MS/MSD #: 970138001 970138001 970138001 970138001 <br /> Sample Cone : N D N D N D N D <br /> Prepared Date: 1/13/97 1/13/97 1/13/97 1/13/97 <br /> Analyzed Date. 1/13/97 1/13/97 1/13/97 1/13/97 <br /> Instrument I D #. GCHP18 GCHP18 GCHP18 GCHP18 <br /> Cone Spiked- 10pg/L loug/L 10pg/L 30ug/L <br /> Result 11 11 11 32 <br /> MS % Recovery. 110 110 110 107 <br /> Dup Result 97 9a 9 5 29 <br /> MSD% Recov .. 97 98 95 97 <br /> RPD: 13 12 15 9 8 <br /> RPD Limit 0-25 025 0-25 0-25 <br /> LCS#' BLK011397 BLK011397 BLK011397 BLK011397 <br /> Prepared Date., 1/13/97 1/13/97 1/13/97 1/13/97 <br /> Analyzed Date: 1/13/97 1/13/97 1/13/97 1/13/97 <br /> Instrument I D # GCHP18 GCHP18 GCHP18 GCHP18 <br /> Cone Spiked- 10pg/L 10ug/L 10yg/L 30pg/L <br /> LCS Result: 81 8 2 so 24 <br /> LCS% Recov : 81 82 80 80 <br /> 60-140 60140 60.140 60-140 <br /> LCS 70-130 70130 70130 70130 <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 /> 01 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 procedure If <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 /> g Penn <br /> Pr ct Manager **MS=Matrix Spike,MSD=MS Duplicate,RPD=Relative%Difference 9701244 BLA t4> <br />