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i <br /> SEQUOIA ANALYTICAL <br /> 1900 Bates Avenue - Suite LM - Concord, California 94520 <br /> (510) 686-9600 - FAX (510) 686-9689 <br /> & ?n} ^^'}n r'v v, nn +n ri v ,..,... rn r rte\ nYO M^`• w.p.v x.ow..v n.v..yr y} r T mt.0.yry ` r ryry n h ro ` ` v tix rr i�]v? 6o.r, <br /> �priialfin�En6�K6&hnb-, Inc } Client Project lD`rUnocai,7303rI'acific Ave,Ave Stockton ri <br /> 2401 Stanwell Drive, Suite 400 <br /> Concord, CA 94520 v <br /> 'Attention Mardo Kaprealian, P E QC Sample Group 2061093-1096 Reported Jul 7, 1992 <br /> vvGv♦ vyr+. nr . y r ,,. rr ♦ ryn. v w.}rs Jx ♦ v r trG• v r . rrt • J v 1 r rr }' r.rui� r�w\u y <br /> QUALITY CONTROL DATA REPORT <br /> SURROGATE <br /> EPA EPA EPA EPA EPA <br /> Method 8015/8020 8015/8020 8015/8020 8015/8020 8015/8020 EPABo15 EPA8015 <br /> Analyst J F J F J F J F J F K Wimer K Wimer <br /> Reporting Units u9/L ue/L ue/L u9/L u8/L us/L ugly <br /> Date Analyzed Jun 25, 1992 Jun 25, 1992 Jun 25, 1992 Jun 25, M2 Jun 25, 1992 Jun 29, 1992 Jun 29, 1992 <br /> Sample# 206-1093 206.1094 206-1095 206.1096 Matrix Blank 206.1093 Matrix Blank <br /> Surrogate <br /> %Recovery 95 98 98 98 100 89 101 <br /> SEQUOIA ANALYTICAL %Recovery Cone of M S -Cone of Sample x 10o <br /> Spike Conc Added <br /> Relative%Difference Conc of MS -Cone of M S D x 100 <br /> tt A hie 0 (Cone of M S + Cone of MSD)/2 <br /> Project Manager 2061093 KEI t6> <br />