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CERTIFICATE OF ANALYSIS <br /> Tuesday,April 24,2001 <br /> TO. William Little <br /> Advanced GeoEnvironmental <br /> 837 Shaw Road <br /> Stockton CA 95215 <br /> Sample Information <br /> Sample ID: PE11268-06 Sample Type: Grab <br /> Sample Description: 040901-MW3B Project Name: Den's Auto Repair <br /> DatelTime Sampled: 04/09/2001 1130 00 AM Sample Matrix: Ground Water <br /> r� <br /> .. v _ _ �,.n. z..e.+n.�zw. a. �x +�-».ads m^es - -.gym-err.,+ _ s__ a. =n .ar._,.M ..+"+ ws� r_. .c�a rtie+a,E.+s-<•- n x v -c w _.a_s:sxse 5.rr_ ,�rntur�w-.z�v-,s.a.�c<..r.acvmes�swerr� <br /> ANALYTICAL RESULT M �QA/QC REPORT W �h <br /> +A#a+��s.s- t -h--- s" I- ^i£M 1 -x-ii-li�+� -1MdS x f .t 'w t'��'�.il[^v�.e*�.�tu•A� <br /> - ' — `� " 'w.4 �z.7� ..st 11Date LCS Spike MS Spike <br /> Test Parameter Method DLR Unit Result Analyzed Blank Conc. LCS% Cone. MS% MSD RSD <br /> TPH-Gasoline EPA 8015M/DHS 50 ug1L ND 13-Apr-01 NO 500 960% 500 980% 980% 00% <br /> Methyl t-Butyl Ether(MtBE) EPA 8260M 05 ug1L N D 13-Apr-01 NO 32 1027% 32 991% 1014% 06% <br /> Di-isopropyl ether(DIPE) EPA 8260M 05 ug1L ND 13-Apr-01 NO 16 1034% 16 988% 1031% 11% <br /> Ethyl-t-butyl ether(ETRE) EPA 8260M 05 ug1L NO 13-Apr-01 NO 16 968% 16 967% 961% 01% <br /> Tert-amyl methyl ether(TAME) EPA 8260M 05 ug1L ND 13-Apr-01 ND 16 1006% 16 936% 906% 08% <br /> t-Butanol(TBI) EPA 8260M 10 ug/L ND 13-Apr-01 NO 200 970% 160 938% 1063% 31% <br /> Benzene EPA 8260M 05 ug1L ND 13-Apr-01 NO 32 961% 32 988% 956% 08% <br /> Toluene EPA 8260M 05 uglL ND 13-Apr-01 NO 32 953% 32 996% 939% 15% <br /> Ethylbenzene EPA 8260M 05 ug1L ND 13-Apr-01 ND 32 942% 32 997% 920% 20% <br /> Xylene(Total) EPA 8260M 05 uglL ND 13-Apr-01 ND 32 950% 32 995% 956% 10% <br /> 1,2-Dichoroethane(DCA) EPA8260 05 uglL NO 13-Apr-01 NO 16 969% 16 1063% 1031% 07% <br /> Ethylene Dibromide(EDB) EPA 8260 05 uglL ND 13-Apr-0i NO 16 969% 16 988% 981% 02% <br /> Methanol EPA 8260 25 ug1L ND 13-Apr-01 NO 100 1000% 100 960% 986-1. 05% <br /> Ethanol EPA 8260 25 ug1L NO 13-Apr-01 NO 98 1020% 100 980% 960% 05% <br /> mg1L=nulkgi anis pet Liter=ppm RSD represent relate a percent different(RPD)between duplicates spike of samples <br /> or Duplicate of Sample <br /> trg/L =nrrcrogt ants pet Liter=ppb <br /> WRESTL TED, MS/MSD-measui a of the percent i ecoveyy e�ciencies within the matrix <br /> C Contposue G=Grab LCS-measure of thepercent[ecovety of the Laboratory Control Spike(LCS) <br /> DLR-Detection Limitfor the Purpose of Repanting Exceptional sample <br /> o V Le,Laboratory Director matrices or interfereneces may result in higher detection limits <br /> Page i of 1 <br /> EPA-Enviionnrentol Protection Agency Method <br /> SM Standard Method foi Exantnia1to52ffVr &gVg(gg 81§1 Suite A Stockton, CA 95204 Tel (209) 462-0892 Fax (209) 462-7935 <br />