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CASTLE ANALYTICAL LABORATORY <br /> Environmental Testing Services 2333 Shuttle Drive,Atwater CA 95301 Phone (209)384-2930 <br /> Certificate#2079 Fax (209)384-1507 <br /> E <br /> Environmental Inc Client Project ID Pacific Car Wash Sampled 6-26-01 <br /> lifornia Reference Number 3867 Received 6-28-01 <br />' d Sample Description Water Extracted 7-2-01 <br /> 5215 Sample Prep/Analysis Method EPA 5030/8260 Analyzed 7-2-01 <br /> ar Lab Numbers 3867-1W, 2W 3W,4W,5W Reported 7-12-01 <br /> 1 <br /> GASOLINE ADDITIVES BY EPA METHOD 8260 GC/MS <br /> 1 ANALYTE REPORTING SAMPLE ID SAMPLE ID SAMPLE ID SAMPLE ID SAMPLE ID <br /> LIMIT MW1 MW2 MW3 MW4 MW5 <br />' 062601 062601 062601 062601 062601 <br /> ( /LI (pg/L) /L /L lL <br /> FLJEL QXYGENAT-E,9 <br />' Methyl tert-Butyl Ether(MTBE) 050 430 ND ND NO NO <br /> Di-isopropyl Ether (DIPS) 050 ND ND NO NO ND <br /> Ethyl tert-Butyl Ether (ETBE) 0 50 NO ND ND NO NO <br /> tert-Amyl Methyl Ether(TAME) 050 ND ND ND ND NO <br />' tert-Butanol(TBA) 20 ND ND NO ND ND <br /> Report Limit Multiplication Factor 50 50' 50* 1 1 <br /> Increased reporting limit due to matrix interferences <br /> Surrogate Recoveries <br /> 1 2-Dichloroethane-d4 100% 989% 101% 983% 104% <br /> Toluene-d8 991% 986% 105% 999% 103% <br /> Instrument ID HP 5972MS <br /> Analytes reported as ND were not detected or below the Practical Quantitation Limit <br /> Practical Quantitation Limit=Reporting Limit x Report Limit Multiplication Factor <br /> (dig/L)= micrograms per liter or parts per billion(ppb) <br /> • ANALYST APPROVED BY <br /> Clan J Cone Labes Phillips <br /> oratory Arrector <br />