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j <br /> SEQUOIAANALYTICAL <br /> Chesapeake680 Redwood Y. CA <br /> sf' (415) 364-9600 FAX (415) 364-9233 <br /> }.._.....:v.... ,�..,.-:- .. 'S.':..::..w::-::: -::.{v�.:n......:..n.:..::...x:..:r..:x...v:.:y..:y....n....}:..n..'..:..'1vv..:.v.:..n.:.'..+.tr:'..ff...:4i'::i0::::}:i'..-.'::..vr.�:•v•.:}:-..:}..:vi..:._:.::.w}�:.:i:..r{:;:A..;v.v.:..:v.:K...n:.:x_:.:..:tr:.:\.w.vni.t..':..-v:--:-:...x......:..v....n..w:.v...r.::...v....v......v...c....x....rv....n.::-r�.. <br /> {.:R:..'•:.-{i:.:::rnn.}::.. snO . .. ................................ "m-m <br /> :r <br /> € RESNA Client Project ID: W0195.00,Western Stone Products/Tracy <br /> a 1710 Main Street <br /> `<Escalon, CA 95320 X <br /> :,'.;Attention:.4.Greg <br /> :.v.}:•:..-:x::u'S.:.v{:tah{v..v;.-1:.v.0DCS...N....h.am Ie <br /> Group: 2101842-50 .......R...e.....o.r.t.e.d. Oct <br /> .27v.vIX.:,:.' <br /> .!.^ <br /> v1992v <br /> vhr G <br /> .iW... <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE Ethyl- <br /> Benzene Toluene benzene Xylenes <br /> Method: EPA 8020 EPA 8020 EPA 8020 EPA 802D <br /> Analyst: C.Donohue C.Donohue C.Donohue C.Donohue <br /> Reporting Units: mg/kg mg/kg mg/kg mg/kg <br /> Date Analyzed: Oct 15, 1992 Oct 15, 1992 Oct 15, 1992 Oct 15, 1992 <br /> OC Sample#: GBLK101592 GBLK101592 GBLK101592 GBLK101592 <br /> MS/MSD MS/MSD MS/MSD MS/MSD <br /> Sample Conc.: N.D. N.D. N.D. N.D. <br /> = Spike Conc. <br /> Added: 0.20 0.20 0.20 0.60 <br /> Conc. Matrix <br /> Spike: 0.21 0.21 0.21 0.62 <br /> Matrix Spike <br /> % Recovery: 105 105 105 105 <br /> Conc. Matrix <br /> Spike Dup.: 0.23 0.23 0.23 0.68 <br /> Matrix Spike <br /> Duplicate <br /> %Recovery: 115 115 115 113 <br /> Relative <br /> %Difference: 9.1 9.1 9.1 9.2 <br /> �'' .:�,"'SEQUOIA ANALYTICAL %Recovery: Conc.of M.S.-Cone.of Sample X100 <br /> Spike Conc.Added <br /> LYS' <br /> ��/�� Relative%Difference: Conc.of M.S.-Conc.of M.S.D. x 100 <br /> ria L e (Conc.of M.S. + Conc.of M.S.D.) 2 <br /> cqrojet Manager 2101SQ.WAT <10> <br />