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' CASTLE ANALYTICAL LABORATORY <br /> Environmental Testing Services 2333 Shuttle Drive Atwater,CA 95301 Phone (209)384-2930 <br /> ' Cert�fjcate#2480 Fax (209)384-1507 <br /> Advanced GeoEnvironmental Inc Client Protect ID Rainwater Car Wash Sampled 06-22-04 <br /> ' of Northern California Reference Number 7092 Received 66-24-04 <br /> 837 Shaw Road Sample Description Water Extracted 07-01-04 <br /> Stockton, CA 95215 Sample Prep/Analysis Method EPA 5030/8260 Analyzed 07-01-04 <br /> Attn Tim Cuellar Lab Numbers 7092-1W, 2W 3W,4W, 5W Reported 07-07-04 <br /> GASOLINE ADDITIVES BY EPA METHOD 8260 GC/MS <br /> ANALYTE REPORTING SAMPLE ID SAMPLE ID SAMPLE ID SAMPLE 10 SAMPLE ID <br /> ' LIMIT MW 12A MW 12B MW 12C MW 12D MW 12E <br /> 062204 062204 062204 062204 062204 <br /> ( !L) (pg1L) ( /L) ( /L) ( /L) (p IL) <br /> FUEL OXYGENATES <br /> Methyl tert-Butyl Ether(MTBE) 050 23 36 0 57 ND NO <br /> ' Di-isopropyl Ether (DIPE) 050 ND ND ND ND ND <br /> Fthyl tert-Butyl Ether (ETRE) 0 50 ND ND ND ND ND <br /> ' tert-Amyl Methyl Ether(TAME) 050 ND 15 ND ND NO <br /> tent-Butanol (TBA) 20 NO ND ND ND ND <br /> ' VOLATILE HALOCARBONS <br /> 1 2 Dichloroethane (1 2 DCA) 050 NO NO ND NO NO <br /> ' Ethylene Dibrcmide (EDB) 050 ND ND ND NO ND <br /> SOLVENTS <br /> ' Trichloroethene(TCE) 050 60 99 46 32 ND <br /> Tetrachloroethene (PCE) 050 370 350 240 270 62 <br /> Report Limit Multiplicatcon Factor 1 1 1 1 1 <br /> Report Limit Muttiplication Factor for PGE 10 10 10 10 <br /> ' Surrogate Recoveries <br /> 1 2-Dichloreethane-d4 944% 953% 984% 854% 81 7% <br /> ' Toluene 18 101% 994% 98 9% 981% 97 20/0 <br /> Instrument ID HP 5972 MS <br /> Analytes reported as NO were not detected or below the Practical Quantitation Limit <br /> Practical Quantitation Limit=Reporting Limit x Report Limit Multiplication Factor <br /> ' (pglL) = micrograms per liter or parts per billion (ppb) <br /> r• <br /> APPROVED BY <br /> ANALYST <br /> Clan J Cone J m s C Phillip's aborafory Director <br />