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19- SEQUOIA -ANALYTICAL <br /> 680 Chesapeake Drive •, Redwood City, CA 94063 <br /> (415) 364-9600 • FAX(415) 3649233 <br /> +}::.:<r.=:e:i<•4w?+!;sws...: <br /> ME, <br /> •xti:^=W..:::r •.4Y=I,-4!.:u4cx4:rrr;�n.: rr.:n--:-.}.-1.;;.:,x•}?::.".<:.3?u; eta!�Y.0 r 3x3r=7:4.;4:e" �[w :.nyn;;::z:::..."'-R}:;: <br /> ...... <br /> rfr. f L=:... .:�'Jh�::'ir:,Fi' i[.}Y.ii:4i:4.y:,. .=vr.= :.:/�'•r: ":C::X-:x._:2-' �y �r�.'.:3:m 3A.::2i3:+ir r'3:ii+i i:;({:[G.'v... �. 'ijS::viOkx.�h.-eA✓el.-:w' :vF:ve�v. v-.�Y��sv�i.$�4mv5m�=m�+�$SJR.ri?A.�Yiik\li4�x:?4'2�•::�i::'�': - <br /> :.,..}}::..ra:..v::..-m•:r:3:-s.......:e-::c}.`7n�.v.�rs,}x.`a3o�uk ,»rru.....rM1.4.-....:..3:. . .,vr::Yfx:::i-rr .. .. ... <br /> SWaterwork Giant Project ID: 519, Stockton Servce/WeverTrucking <br /> :81710 Main Street <br /> >h Escalon, CA 95320 <br /> Attention: John Lane Q.C. Sample Group: 106-2710 Reported: Jui 1, 1991 <br /> ....... .s.,-.r.�-- ...N.:?:-#:3:i•*+4.i,r,..::�r x'fi"x:v::-:r.i"..i•.�,-x r.:4:4y rn} _i.:..v a':G3i'@*'a.'-'fix.. <br /> ..4.: .n.. .r.. .Q.{. :1::= 35::+' v:r...t<t. c?t?:i•: •::ham':?':_ yr <br /> . ,...`:m'ii�;>.....x`�;;ar m,.,:,».i:.`N tr.:;X.:;-'.�`.'-'u",acrime'"'.ioc::-:Roc;'.'f::'i'r'`'.-:..;,:?�t.,s:�:.r....:..v.G-'wY.�r...v :,�'?:..:;;'w,,...s:•.,,r. `y�:T.•-w. <br /> ...:...........:......::...:............:.�.v:2Y:rt'S:'vfir,`w4�v����S:vr:.=v..w...'S.:ti'`v •nv <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE Ethyl <br /> Benzene Toluene Benzene Xylenes Diesel <br /> Method: EPA 8020 EPA 8020 EPA 8020 EPA 8020 EPA 8015 <br /> Analyst: G.Meyer " G.Meyer G.Meyer G.Meyer R.Lee <br /> Reporting Units: ng ng ng ng ng <br /> Date Analyzed: Jun 25, 1991 Jun 25, 1991 Jun 25, 1991 ,tun 25, 1991 Jun 26, 1991 <br /> QC Sample#: GBLK 062591 GBLK 052591 GBLK 062591 GBLK 062581 GBLK 062691 <br /> Sample Conc.: N.D. N.D. N.D. N.D. N.D. <br /> Spike Conc. <br /> Added: 100 100 100 300. 900 <br /> Conc. Matrix <br /> Spike: 91 93 95 280 700 <br /> Matrix Spike <br /> %Recovery: 91 93 95 93 78 <br /> Conc. Matrix <br /> Spike Dup.: 90 91 91 270 790 <br /> Matrix Spike <br /> Duplicate <br /> % Recovery: 90 91 91 90 88 <br /> Relative <br /> %Difference: 1.1 2.2 4.3 3.6 12 <br /> SE EA ANALYTICA Recovery: Conc.of M.S.-Cane.of Sample x 100 <br /> Spike Conc.Added <br /> Relative%Difference: Conc.of M.S.-Cane.of M.S.D. x 100 <br /> abet Hac I (Conc.of M.S. + Cone.of M.S.D.) 2 <br /> j ro1ject Manager 1062710.wAr <8> <br />