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5WH <br /> LHR - lTOCH CERTIFICATE OF ANALYSIS <br /> TO Wrllram f7&yUc;a/ Laboratory Friday,December 31, 1999 <br /> Advanced GeoEnvlronmentai, <br /> 4005 N Wilson Way <br /> }7 Stockton, Ca 95205 <br /> 1 ` <br /> v <br /> Sample Information <br /> 4. Sample ID: PE6790-01 Sample Type. Grab <br /> f/,I Sample Description: MW-1A(Monitor�ng Well IA) Project Name- Denis Auto Repair <br /> DateJTinte Sampled 12/30/1999 3 00 00 PM <br /> Sample Matrix. Ground Water <br /> a <br /> ANALYTICAL RESULT QAIQC REPORT <br /> Dale LCS Spike MS Spike <br /> a <br /> Test Parameter Method DLR Unit Result Analyzed Blank Conc LCS% Cana MS% MSD RSD <br /> TPH-Gasoline EPA 8015M/DHS 50 u 1L 5730 ° ° <br /> 9 03-Jan-00 ND 504 98 0 k 500 106 D,6 1020% 10% <br /> g Methyl t-Butyl Ether(MtBE) EPA8260 05 ug/L ND 03-Jan-00 ND 80 975% 80 1025% 1063% 09% <br /> s Diisopropyl ether(DIFF) EPA8260 05 uglL 64 03-Jan-00 ND 40 <br /> 1020% 40 1050% 1050% 00% <br /> Ethyl-t-butyl ether(ETBE) EPA8260 05 ug/L ND 03-Jan-00 ND 40 959% 40 959% 973% 04% <br /> r <br /> Tert-amyl methyl ether(TAME) EPA8260 05 ug/L 1220 03-Jan-00 ND 70 1056% 70 1109% 1058% <br /> 12% <br /> i <br /> t-Butanol(TBA) EPA8260 05 ug/L ND 03-Jan-00 ND 40 1050% 40 1125% 1100% 06% <br /> Benzene EPA 8260 05 ug/L 775 03-Jan-00 ND 80 1123% 80 1150% 1143% 02% <br /> Toluene EPA 8260 05 ug/L 28 03-Jan-00 ND 40 970% 40 1013% 1000% 03% <br /> Ethylbenzene EPA 8260 05 ug/L 170 03-Jan-00 ND 40 966% 40 1060% 1060% <br /> 00% <br /> Xylene(Total) <br /> EPA 8260 05 ug1L 143 03-Jan-00 ND BO 1014% 80 1101% 1103% 00% <br /> Mg/L=wiffigrams per Liler=ppm DLR-Defection Limit for the Purpose of Reporting RSD-represent relative percent diflerent(RPD)befueen duplicates spike of samples <br /> ° ug/L=micrograns per Liter=ppb exceptional sample matrices or rnlerfereneces may result on or Duplicate of Sample <br /> C=Composite G=Grab <br /> higher detection limits NIS/MSD-measure o the <br /> P f percent recovery efficiencies ive[hnn the matrix <br /> r LCS-measure of the percent recovery of the Laboratory Control Spike(LCS) <br /> RESP C FULL B TTED, <br /> Jo at n Hao V Le, Laboratory Director <br /> r <br /> EPA environmental Protection Agency Alethod Page 1 of I <br /> $A1-Standard Atelliod for Eraminalion of Water I'Vasleii aler 181h Cd <br /> 545 E Cleveland St Suite A Stockton, CA 95204 Tel (209) 462-0892 Fax (209) 462-7935 <br />