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SCASTLE ANALYTICAL LABORATORY <br /> Environmental Testing Services 2333 Shuttle Drive Atwater,CA 95301 Phone (209)384-2930 <br /> Fax (209)384-1507 <br /> Advanced GeoEnvironmental Inc Client Project ID Pacific Car Wash Method EPA 5030/8260 <br /> of Northern California Reference Number 5946 Instrument ID HP Series II <br /> 837 Shaw Road Matrix Sod Prepared 08-01-03 <br /> Stockton, CA 95215 Analyst S Foster Analyzed 08-01-03 <br /> Attn Tim Cuellar Reported 08-11-03 <br /> QUALITY CONTROL DATA REPORT <br /> SPIKE ID VSMS-8013 <br /> Reporting BLANK Spiking Control %R <br /> Limit Result Level Spike Limits <br /> m /K m /K m IK %R <br /> COMPOUNDS <br /> t-But I Alcohol(t-BA) 0 80 NO 300 760% 70-130 <br /> Methyl t-but I ether (MTBE 0 010 ND 0 100 700% 70-130 <br /> D}iso ro I ether(DIPS) 0 010 ND 0 100 708% 70-130 <br /> Ethyl t-But I ether(ETBE) 0 010 ND 0 100 872% 70-130 <br /> t Amyl methyl ether TAME) 0 010 ND 0 100 840% 70-130 <br /> 1 2-Dichloroethane(1 2-DCA) 0 010 ND 0 100 119% 70-130 <br /> Ethylene dibromide EDB 0 010 ND 0 100 1 864% 70-130 <br /> Surrogates <br /> 1 2-Dichloroethane-d4 0 010 113% 0 400 1079/6 70-130 <br /> Toluene-d8 0 010 999% 0 400 1 D1% 70-130 <br /> Spiking MATRIX MATRIX %R %RPD <br /> Level SPIKE SPIKE DUP Limits <br /> m IK %R %R.COMPOUNDS <br /> t-But 4 Alcohol(t-BA) 300 644% 603% 70-130 656% <br /> Methyl t-but I ether (MTBE) 0 100 126% 112% 70-130 118% <br /> Dusoprop I ether DIPE 0 100 100% 952% 70-130 532% <br /> Ethyl t-But I ether(ETBE) 0100 126% 114% 70-130 107% <br /> t-Am I meth,l ether(TAME) 0 100 104% 940% 70-130 898% <br /> 1 2-Dichloroethane(1 2-DCA) 0 100 972% 796% 70-130 199% <br /> Ethylene dibromide(EDB) 0 100 948% 680% 70-130 329% <br /> Surrogate <br /> 1 2-Dichloroethane-d4 0 400 978% <br /> 123% 70-13D 22 7°i6 <br /> Toluene-d$ 0 400 910% 133% 70-130 377% <br /> The LCS(Laboratory Check Sample) is a control sample of known Interferent free matrix that is fortified with representative analytes and <br /> analyzed using the same reagents preparation and analytical methods employed for the samples The LCS%recovery is used for validation <br /> of sample batch results Due to matrix effects the QC limits and recoveries for MS/MSD's are advisory only and are not used to accept or <br /> reject batch results <br /> 1 <br /> r <br /> ANALYST APPROVED BY <br /> Glare J one Ja s Phrlllps <br /> L or Dinrctor <br /> I <br />