Laserfiche WebLink
I <br />' CASTLE ANALYTICAL LABORATORY <br /> Environmental Testing Services 2333 Shuttle Drive Atwater CA 95301 Phone 209 384-2930 <br /> Ceitificate#2480 Fax (209)384-1507 <br /> I <br /> Advanced GeoEnvtronmental Inc Client Project ID Pacific Car Wash Method EPA 503018015M,8020 <br />' of Northern California Reference Number 7013 Instrument ID Var-GC1 <br /> 837 Shaw Road Sample Description Water Extracted 06-04-04 <br /> Stockton CA 95215 Analyst Jim Philtips Analyzed 06-04-04 <br /> Attn Tim Cuellar Reported 06-11-04 <br /> I <br />' QUALITY CONTROL DATA REPORT <br />' ANALYTE Gasoline MTBE Benzene Toluene Ethyl Benzene Total Xylenes <br />' Spike Concentration 110 2 10 1 32 794 1114 922 <br /> Units ug1L ug/L ug/L uglL ug1L uglL <br />' LCS Batch# VW-6044 VW-6044 VW-6044 VVV-6044 VVV-6044 VW-6044 <br /> LCS % Recovery 101% 695% 102% 950% 970% 977% <br /> Surrogate Recovery 102% 100% 100% 100% 100% 200% <br /> I• Control Limits 70-130% 70-130% 70-130% 70-130% 70-130% 70-130% <br /> I MS/MSD Batch# VVV-6044 VW-6044 VW-6044 VW-6044 VVV-6044 VVV-6044 <br /> Spike Concentration 110 210 1 32 794 1 84 922 <br /> MS %Recovery 966% 110% 106% 936% 971% 955% <br /> Surrogate Recovery 986% 958% 958% 958% 958% 958% <br /> MSD% Recovery 950% 109% 994% 896% 926% 914% <br /> Surrogate Recovery 971% 943% 943% 943% 943% 943% <br /> Relative % Difference 1 60% 0763% 600% 434% 473% 4 41% <br /> Method Blank ND ND ND ND ND ND <br /> Surrogate Recovery 93 1% 96 1% 961% 96 1% 961% 96 1% <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 MSlMSD's are advisory only and are not used to accept or <br /> reject batch results <br /> l <br /> APPROVED BY APPROVED BY / <br /> Clary Cone-, Ja es hillips <br /> Laboratory Manager boratory Director <br /> I <br />