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1 <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 GeoEnvironmental Inc Client Protect ID Rainwater Car Wash Sampled 0623-04 <br /> ' of Northern California Reference Number 7093 Received 0624-04 <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 7093-6W,7W,8W, 9W, 10W Reported 0707-04 <br /> GASOLINE ADDITIVES BY EPA METHOD 8260 GUMS <br /> 11 <br /> ANALYTE REPORTING SAMPLE ID SAMPLE ID SAMPLE ID SAMPLE ID SAMPLE ID <br /> LIMIT MW 76 MW 7C MW 7D MW 7E MW 7F <br /> 062304 062304 062304 062304 062304 <br /> (pg/L) (pglL) (Ng/L) (pQ/L) (N /L) (Ng/L) <br /> FUEL OXYGENATES <br /> ' Methyl tert-Butyl Ether(MTBE) 050 54 12 6 3 44 059 <br /> Di-isopropyl Ether (DIPF) 050 ND ND ND ND ND <br /> ' Ethyl tert-Butyl Ether (ETBE) 0 50 ND ND ND ND ND <br /> '0 tert-Amyl Methyl Ether(TAME) 050 0 70 ND ND 054 ND <br /> tert-Butanol(TBA) 20 ND ND ND ND ND <br /> VOLATILE HALOCARBONS <br /> 1 2-Dichloreethane (1 2 DCA) 050 22 46 ND 1 4 ND <br /> Ethylene Dibromide (EDB) 050 ND ND ND ND ND <br /> SOLVENTS <br /> ' Trichloroethene(TCE) 050 19 19 11 13 10 <br /> Tetra chi oroethene(PCE) 050 260 740 990 190 32 <br /> ' Report Limit Multiplication Factor 1 2- 5* 1 1 <br /> Report Limit Multiplication Factor for PCE 5 20 20 10 <br /> Report Limit Multiplication Factor for MTBE 5 <br /> ' Surrogate Recoveries <br /> 1 2-Dichloroethane d4 965% 929% 935% 913% 106% <br /> Toluene-d8 101% 102% 100% 102% 102% <br /> ' Instrument t0 HP 5972 MS <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 /> ' (tag/L)= micrograms per liter or parts r bill n(ppb) <br /> ANALYST APPROVED BY <br /> Clear J Cone Ja es C Phillips <br /> L oratory director <br />