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j 'SEQUOIA ANALYTICAL <br /> 1900 Bates Avenue • Suite LM • Concord, California 94520 <br /> (510) 686-9600 FAX (510) 686-9689 <br /> x�,{ <br /> r^ �realian I:nglneermg, ncClient project ID <br /> • rSulk dant; 2835 Navy Dr; Stockton <br /> *'O'pi Stanwell Dave, Suite 400 <br /> Concord, CA 94520 <br /> Attention Mardo Kapreahan, P E CC Sample Group 2070681-684 Reported Aug 4, 1992 <br /> > r r nv .,vvn n + `S + + ,rc.w vrry r nv. r wt xA 4r r x v. rrvvrv.virwv v v ryx 1 v x . r x r r nv , yr w v <br /> QUALITY CONTROL DATA REPORT <br /> ru8ROGATE <br /> Method EPA8015 EPA8015 EPA$o15 EPAS015 EPA8015 <br /> Analyst K WIrner K Wimer K Wimer K Worrier K Wimer <br /> Reporting Unrts mg/kg mg/kg mg/kg mg/kg mg/kg <br /> Date Analyzed Aug 4, 1992 Aug 4, 1992 Aug 4, 1992 Aug 4, 1992 Aug 4, 1992 <br /> Sample # 207-Deal 207-0682 207-0683 207-0684 Matrix Blank <br /> 0 <br /> Surrogate <br /> % Recovery 95 106 94 105 101 <br /> &4EQUIANALYTICAL %RecoveryConc of M S -Conc of Sample x 100 <br /> Spike Conc Added <br /> Relative%Difference Conc of M S -Conc of M S D x 100 <br /> effo (Cone of M S + Conc of M S D)/2 1 <A> <br /> Project Manag <br />