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a <br />� �y{r ,f,y �,„' �, ,,, :� ...,�- '�& _ �,�,,�a'�a-.'^�''" .� �...�olr �K .'" - s' .6:.` c h'e _ "'� °`r.+',° +1't.:-uF� ;��^ �` p•'� ,:�=-r�'�: <br /> c� s- .yfl�.•', y- ~�.:. .��iw, 'a.�r .�. ,�, x:+4'"�+�_` r•.L`�'=,v`,u„_- : "3'�•.ra � ,r.'- 'r�-;G <br /> 'gs. <br /> e <br /> r <br /> SEQUOIA ANALYTICAL <br /> 680 Chesapeake Drive • Redwood City.CA 94063 <br /> (415)364-9600 • FAX(415)364-9233 <br /> i <br /> DeItaVEnvironmenial Consultants Client Protect ID: #40-88-586/Charter Way Shell,Stockton <br /> .3330 Data Drive <br /> ''.Rancho Cordova,CA 9670 I <br /> AhentEon: Hal Dlhm OC Sample Group: 108-029.6 Reported Aug 9, 1991 E <br /> .,. : C <br /> ... <.,..:::.- ..., .vim.. ,,., �::i .,.,.n -.� n,...•ti�,.. ,..,.a,,n i <br /> OUALITY CONTROL.DATA REPORT <br /> ANALYTE <br /> r <br /> Benzene Toluene Eth�benzena Xylene <br /> 1 <br /> Method: EPA 8024 EPA802b EPA 8020 EPA SM <br /> nalyst: S.Gill S.Gill S.Gill S.Gill e, <br /> Repo"!'++y Units: ug/kg V9/k9 Mg/kg u9/k9 <br /> Date Analyzed: Aug e, 1991 Aug 8, 5991 Aug 8, 1991 Aug 8, 1991 <br /> OC Sample#: GBLKOW791 GELK080791 GBLKU80791 GBLK080791 <br /> 1 <br /> Sample Conc.: N.D. N.D. N.D. N.D. <br /> Spike Conc. <br /> .� Added: 200 200 200 600 fj <br /> Conc.Matrix <br /> Spike: 200 190 190 580 <br /> Matrix Spike 14��• <br /> %Recovery: 98 97 96 96 ?I <br /> Conc.Matrix <br /> Spike Dup.: 1-00 190 190 570 <br /> Matrix Spike <br /> Duplicate } <br /> %Recovery: 97 96 96 95 " <br /> i <br /> �1 <br /> Relative y' <br /> %Difference: 1.0 0.52 0.52 0.70 <br /> SEQUOIA ANALYTICAL Recovery: Conc,at M.S. Conc.of Sample x 100 <br /> {, \ Spike Conc.Added <br /> 1�1 Relative%Differerce: Cone.of M.S.-Cone,of M.S.D. x 100 <br /> Mall McBimey S�tiger (Conc.of M.S.+Gone.of M.SA.)/2 <br /> Project Manager 1080295.DL* <5> <br /> ii <br /> '{1 <br /> i <br /> I <br />