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i <br /> CASTLE ANALYTICAL LABORATORY <br /> Environmental Testing Services 2333 Shuttle Drive,Atwater CA 95301 Phone (209)384-2930 <br /> ' Certificate#2480 Fax (209)384-1507 <br /> Advanced GeoEnvironmentai Inc Client Project ID Rainwater Car Wash Sampled 06-23-04 <br /> ' of Norther}California Reference Number 7093 Received 06-24-04 <br /> 837 Shaw Road Sample Description Water Extracted 07-02-04 <br /> Stockton CA 95215 Sample Prep/Analysis Method EPA 5030/8260 Analyzed 07-02-04 <br /> Attn Tim Cuellar Lab Numbers 7093-16W, 17W, 18W 19W,20W Reported 07-07-04 <br /> GASOLINE ADDITIVES BY EPA METHOD 8280 GCIMS <br /> ' ANALYTE REPORTING SAMPLE ID SAMPLE ID SAMPLE ID SAMPLE ID SAMPLE ID <br /> LIMIT MW 8£ MW 8l= MW 9A MW 9B MW 9C <br /> ' 062304 _ 062304 062304 062304 062304 <br /> (ug/L) (N9/L) (N91L) (Ng/L) (N /L) (Igg/L) <br /> FUEL OXYGENATES <br /> ' Methyl tert-Butyl Ether(MTBE) 050 ND ND 1 9 1 2 ND <br /> Di isopropyl Ether (DIPE) 050 ND NO ND ND ND <br /> iEthyl tert-Butyl Ether (ETRE) 050 ND ND ND ND ND <br /> ' tert-Amyl Methyl Ether(TAME) 050 ND ND ND ND ND <br /> I <br /> tert-Butanol (TSA) 20 ND ND ND ND ND <br /> I <br /> VOLATILE HALOCARBONS <br /> 1 2-Dichloreethane (1,2-DCA) 050 ND ND ND ND 079 <br /> ' Ethylene Dibromide (EDS) 050 ND ND ND ND ND <br /> I <br /> SOLVENTS <br /> ' TrEchloroethene (TCE) 050 11 18 23 58 12 <br /> Tetrachloroethene(PCE) 050 98 110 31 350 30 <br /> ' Report Limit Multiplication Factor 2" 1 1 2` 1 <br /> Report Limit Multiplication Factor for PCE 10 20 2 <br /> Report lu-nit raised due to matnx interference <br /> ' Surrogate Recoveries <br /> 1 2-Dichloroethane-d4 932% 907% 945% 949% 985% <br /> Toluene-d8 924% 101% 981% 986% 101% <br /> ' Instrument ID HP 5972 MS <br /> Analytes reported as ND were not detected or below the Practical Quantitation Limit <br /> Practical Quantitation Limit=Reporting Limit x eport Limit Multiplication Factor <br /> (lag/L)= micrograms per liter or parts pet hon pb) <br /> ANALYST - - YW �- _ BY <br /> APPROVED <br /> r <br /> Cfari J Cone J mei C Ph�!lrps <br /> atroratoryDirector <br />