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Sequoia 680 Chesapeake Dnve Redwood City,CA 94063 (415) 364 9600 FAX(415) 364 9233 <br /> 404 N Wiget lane Walnut Creek,CA 94598 (510) 988 96W FAX(510)988 9673 <br /> Analytical 819 Striker Avenue,Ste 8 Sacramento CA 95834 (916) 921 9600 FAX(916)921 Oioo <br /> t Jv}:.v w.vwtn]+J'*^'n t`rJ r4+}n n wq.y nkk xSr. vJJx :i r^ ~{`�rrr now wnv s.SrnyzSt4 Jn vvw l K�i r3i p.vvv vv.}nv rvJ.n"v+J{tl.r tiYr +r v `n r } r nr r vn vv ,�y <br /> ArvJ r.r i +r rervi4 r esSv~n Inc4. <br /> Blame Tech Sc , Client Project lD Chevron 9-4183 /960731-D2 t <br /> v 985 Timothy Drive Matrix Liquid <br /> San Jose, CA 95133 <br /> ~Attention Jim Keller Work Order# 9608096-01-04 Reported Aug t V 13, 1996; <br /> S <br /> S fYitrn• . v r3 f. 'f 'J ' 4 ~y rr.. t r. m. v n yr v+ v ry r?14 v r.vtr + ry c t n v r <br /> ry ry +.fvk`rrLv n vin+.r. v r r <br /> QUALITY CONTROL DATA REPORT <br /> Analyte: Benzene Toluene Chloro- <br /> benzene <br /> QC Batch#: GC 30896802008A GCOW8%W2W8A GCO808968020MA <br /> Analy. Method: EPA 8020 EPA 8020 EPA 8020 <br /> Prep. Method' EPA 5030 EPA 5030 EPA 5030 <br /> Analyst: T Costello T Costello T Costello <br /> MS/MSD# 960811701 960811701 960811701 <br /> Sample Cone : N D N D N D <br /> Prepared Date: 8/7/96 8/7/96 8/7/96 <br /> Analyzed Date. 8/8/96 8/8/96 8/8/96 <br /> Instrument I D #' GCHP8 GCHP8 GCHP8 <br /> Cone Spiked: 25ug/L 25yg/L 25ug/L <br /> Result 29 28 27 <br /> MS % Recovery: 116 112 108 <br /> Dup. Result- 28 28 27 <br /> MSD % Recov 112 112 108 <br /> RPD. 35 00 00 <br /> RPD Limit 0-25 0-25 0-25 <br /> LCS#: BLKOW896 BLK08W96 BLK080896 <br /> Prepared Date. 8/8/96 8/8/96 8/8/96 <br /> Analyzed Date: 8/8/96 8/8/96 8/8/96 <br /> Instrument LD # GCHP8 GCHP8 GCHP8 <br /> Cone Spiked: 25pg/L 25pg/L 25pg/L <br /> LCS Result: 28 27 25 <br /> LCS % Recov 112 108 100 <br /> 80-140 60-140 60-140 <br /> LCS 70-130 70-130 70-130 <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 /> SE01.10IA ANALYT AL 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 fall within specified control limits due to matrix <br /> interference,the LCS recovery is to be used to validate the batch <br /> Peggy Penne **MS=Matrix Spike, MSD=MS Duplicate,RPD=Relative%Difference <br /> Project Mana r Page 2 of 2 Y 9608096 BLA <2n <br />