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t1E1 W0 RO- ITEC N CERTIFICATE OF ANALYSIS <br /> Analytical Laboratory Tuesrfu), hlurclt 12, 20l}2 <br /> TO: William Little <br /> Advanced GeoEnvironmental <br /> 837 Shaw Road <br /> Stockton CA 95215 <br /> Oxygenated Compound by GCMS . <br /> Sample Informatiott <br /> Sample ID: 14494-01A Sample Type: Grab <br /> Sample Description: Tank#1 North End Project Name: 4040 E.Main ST. <br /> Date/Time Sampled. 3/6/2002 4:30:00 PM Sample Matrix: Soil <br /> ANALYTICAL RESULT QAIQCREPORT <br /> Date LCS Spike MS Spike T <br /> Test Parameter Method DLR Unit Result --,Analyzed Blank Conc. LCS% Conc. MS% MSD RSD <br /> Methyl t-Butyl Ether(MtBE) EPA 8260B 5 ug/kg ND 08-Mar-02 ND 12.8 n 112.5% „12.8 117.2% 117.2%° 0.0%° <br /> DHsopropyl ether(DIPS) ..,,_..: EPA 82608 5. :.....,.. ug/kg ND.. 08-M:...;_:.....,.•'. ...,. .. . <br /> `^ ar02 ND 35 98,5°k 35 82.9% 82.9°/a 0.0% <br /> Ethyl-t bury!ether(ETRE) EPA 8260B 5 ug/kg ND 08-Mar-02 ND 35 98.3% 35 108.6% 108.6% 0.0%° <br /> Tert-amyl methyl ether... . . ...:... ..:.......... „ . ...__. o .o/0-. ° <br /> - (TAME) EPA 82608 "B4 5.,.w uglkg ND 08-Mar-02 ND 35 95.7/0 35 100.2 _ 103.3/° 0.8% <br /> t-Butanol(TBA) EPA 8260B 100 ug/kg ND 08-Mar-02 ND 100 110.0%°, ri /100 88.0% 86.0% 0.6% <br /> 1,2 Dichloroethane-d4(Surrogate) %Recovery 110°/, 't <br /> 4-BFB-(Surrogate) %Recovery 112% <br /> niiz L —mi!ligrarns per Liter=ppm RSD represenr relarice percent dl fferent(RPDA Gclsreen Aiplicuiea�.spikc ofsamples ro <br /> trgiL =mic•rograws per Liter=ppl) or Duplicate.of stimple <br /> 4RESPET'FUL B TTED, UN/A 'D-treasure ofibe<percent recovery efJiciencins st ithin the mrrtrfr <br /> C:=C'omposite G—GrabLCS-measure ofthepercentrecover y�ofllre Lethornim),C.mlrolSpike(LCS) <br /> .ffao ['. Le, Laboratory Director DLR-Detec.lion Limit fur the Purpose ol'Reparting. bxeptional sample <br /> mellrices or inlerfereneces mop remit in higher delection limits <br /> E <br /> d <br /> Ern•ironmenla/Protection Agency A-lelhod SAI-S'lrrndarrl Methvd for J3.rornination of Water IF aslew(Iler 181h Ed. p1Cbe 1 of 1 <br /> 545 E. Cleveland St. Suite A Stockton, CA 95204 Tel.: (209)462-0892 Fax: (209) 462-7935 <br />