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Sacramento,CA 95834 <br /> Sequoia (916)921-96M <br /> FAX(916)921-0100 <br /> Analytical www sequoialabseom <br /> COR InternattoW.Rancho Cordova Proj-r TOSCO 11192,Stockton,CA <br /> 7 Kilgore Road, Suite 100 Project Number NIA Reported <br /> Rancho Cotdova CA,95670 Pros=et Man"9tr Rusty BenkoSky 12/20/01 17 23 <br /> Volatile Organic Compounds by EPA Method 8260E-Quality Control <br /> Sequoia Analytical- Sacramento <br /> Repoa,nE Spike Source %RHC RPD <br /> Analyte Resulr Lunt Uolrs Level Rnsulr %REC Ltmrts RPD Lrmjt Nous <br /> Batch 1120237- EPA 5030B [Pnj— <br /> Blank(1120237-BLKI) _ Prepared 8t analyzed 12/18/01 <br /> Tar!-butyl alcohol ND 50 mg/m'Pur <br /> Methyl ter[-butyl ether NO 050 <br /> Di-isopropyl ether NO 050 <br /> Ethyl tm-butyl ether NO 050 " <br /> Ten-amyl methyl ether ND 050 " <br /> Ethanol ND 3000 " <br /> 1,2-Dtc lorocrhanc ND 050 " <br /> Ethylene dtbromlde ND 050 <br /> Surrogate 1 2-DC4-d4 - 114 100 114 60-140 <br /> Blank(1120237-BLK2) _ Pmyared 12/18101y Analyzed- 12/19/01 <br /> Tcrt-butyl alcohol NO 50 M9191'Alt <br /> Methyl tent-butyl ether ND 050 " <br /> propyl ether ND 050 T' <br /> tart-butyl ether ND 050 <br /> Tent-amyl methyl ether NO 050 " <br /> Ethanol NO 3000 " <br /> I,2-1bchlotoethane ND 050 " <br /> Ethylene dtbromide WD 0 50 " <br /> Surrogate 12-DCS[-da _ 112 100 117 60-140 Y — <br /> L,CS(1I20237-BSI) _ Prepared&An_alyzcd 12/18/01 <br /> Merhyl tart:-bury]ether 107 0 50 mgIW Air 100 107 70.130 <br /> Sur ogwue 1,2-DCA d4 _ 123 /00 113 60-140 - <br /> L.CS(1120237-BS2) - -� Prepared 12/18/01 Analyzed 12/19/01 <br /> Methyl tart-butyl other 11-3 0.50 M�;;-Atr 100 113 70-130 <br /> Surrogate 12-DCA d4 - 124 100 124 60-140 <br /> � <br /> o Analytical Sacramento to Anal teal - 77+e resale in they report apply to rhe samples analy=d In accordance wah the chain of <br /> casrody document 77rtt ana!'yttcal report meat be reproduced rn as ettroery <br /> Page Page 9 of l l <br /> 1:72i0T d bus/uion03S WdTE IT 10, E2 D3C <br />