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�l3C�C��SQ�o � <br /> I HWB RO-TIMOR CERTIFICATE OF ANALYSIS <br /> Analytical Laboratory Monday,May 27,2002 <br /> TO Tim Cuellar <br /> Advanced GeoEnvlronmental <br /> 837 Shaw Road <br /> Stockton CA 95215 <br /> Aromatic Compound in Gasoline by GC/MS <br /> Sample Information <br /> Sample ID. 15078-03 Sample Type. Grab <br /> Sample Description MW5 05-03-02 Project Name. Stockton Fire Station <br /> Date/Time Sampled- 5/3/2002 10 16 00 AM Sample Matrix Ground Water <br /> ANALYTICAL RESULT QA/QCREPORT F <br /> Date LCS Spike MS Spike <br /> Nest Parameter Method DLR Unit Result 'Analyzed Blank Cone. LCS% Cone MS% MSD RSD ; <br /> Benzene EPA 8260E _ 05 ug/L ND �_05-May-02 ND 125 1028% 125 1058% 1023% 08% <br /> i Toluene EPA 8260E _ 0 5 ug/L _ Np05-May 02 ND 125 --103 0%�- 125 1094% 1024% 17% <br /> �Ethylbenzene _ _EPA 8260B 05 --�ug/L _ ND 05-May-02 - ND — 125 1031% 125 1070% 1006% mm1 5% ; <br /> g m,p-xylene - m - EPA 8260B — 05 ug/L ND_—�f 05-May-02 ND W 25 1023% 25 1068% 1001% 16% <br /> a Xylene _ <br /> EPA 82608 _ 05 ug/L ND t 05-May-02_ ND 12 5 103 4% 12 5 107 3%_° 1_01 8% 13% <br /> I _. ___ _ <br /> 1,2-Dichoroethane(DCA) EPA 8260B�_ _ 05 -uglL �ND– 05-May-42 1VD - 125 1015% 125 _ 101 0% 101 9% 02% <br /> _ 5 10 <br /> Methyl t-Butyl Ether(MtBE) EPA 82606_ �0 5 uglL ND_ 05-May-02 N❑ _ 125 987% 125 981% 970% 03% x <br /> Dusopropyl ether(DRE) EPA 82608 0 5 � -.. ug/L ND E 05-May-02 ND 30 103 6% µ -30Wµ_ 102 2% 99 6% - 06% <br /> -- _—_ _ <br /> Ethyl-t-butyl ether(ETBE) EPA 8260E 05 ug/L ND a 05-May-02 ND 30 1037% 30 994% 996% 00% r <br /> i Tert amyl methyl ether(TAME) EPA 82606 0 5 ug/L ND 1 _05 May 02 ND 30 103 3% 34 98 8% 97 6% 03% <br /> {t-Butanol(TBA) EPA 8260B 50 ug/L ND 05 May-02 N❑ 154-�- 101 1% 150 95 9% 94 5% 0 4% <br /> I Ethylene Dibromide(EDB) EPA 8260E 05 ug/L _ ND t-056-m—,-02 ND 125 1010% 125 1018% 101.4% 01% <br /> _0%_5 <br /> -.. d .5 . _b <br /> ;TPH-Gas EPA 8015MILUFT 50 uglL ND 05 May 02 ND 500 96 0% 500 96 0_%_9 7 6% 04% = <br /> I TPH-Diesel EPA 8015MILUFT 100 ug/L ND 05-May-02 ND 5000 102 0% 5000 96 0% 93 0% 0 8% <br /> mg/L=milligrams per Liter=ppm RSD-represent relative percent different(RPD)betiveen duplicates spike ofsamples <br /> ug/L=nucrogi ams per Liter=ppb of Duplicate of Sample <br /> REWC FUL U M TED, MS/MSD-measure of the percent recovery efficiencies within the matrix <br /> C=Composite G=Grab <br /> LCS-measure of the percent recovery of the Labor atony Control Spike(LCS) <br /> Ja atji n Hao V Le,Laboratory Director DI R-Detection Limit for the Purpose of Reporting Fxceptional sample <br /> matrices or inierfereneces may result in higher detection hwas <br /> EPA-LriiuonmeutalProtechonAgcncy�i'g"1 Clevelant�lv,S�iin�u�ie l�odf�rtOC�Ci{onon(;A%,(I0islesr"fe113thd09) 462-0892 Fax (2091462-7935 Pagel of <br />