Laserfiche WebLink
' 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 /> Advanced Geo Environmental, Inc Client Project ID Top Filling Method EPA 5030/8015M,8020 <br />' of Northern California Reference Number 1760 Instrument ID Var-GC1 <br /> 4005 North Wilson Way Matrix Water Prepared 9-12-98 <br /> Stockton, CA 95205 Analyst Jim Phillips Analyzed 9-12-98 <br /> Attn Tim Cuellar Reported 9-21-98 <br />' QUALITY CONTROL DATA REPORT <br />' ANALYTE Gasoline MTBE Benzene Toluene Ethyl Benzene Total Xylenes <br />' Spike Concentration 100 1 00 1 00 1 00 1 00 200 <br /> Units ug/L ug/L ug/L ug/L uglL ug/L <br />' LCS Batch # VG-9128W VS-9128W VB-9128W VS-9128W VB-9128W VB-9128W <br /> LCS % Recovery 95 3% 129% 111% 110% 109% 102% <br /> Surrogate Recovery 120% 979% 97 9% 97 9% 97 9% 979% <br /> Control Limits 70-130 % 70-130 % 70-130 % 70-130 % 70-130 % 70-130 % <br />' MS/MSD Batch # VG-9128W VB-9128W VB-9128W VB-9128W VB-9128W VB-9128W <br /> MS % Recovery 108% 110% 105% 102% 108% 9135% <br /> Surrogate Recovery 106% 101% 101% 101% 101% 101% <br /> MSD % Recovery 109% 108% 107% 102% 109% 992% <br /> Surrogate Recovery 107% 101% 101% 101% 101% 101% <br /> Relative % Difference 0618% 229% 1 64% 00370% 1 28% 0660% <br /> Methanol Blank ND ND ND ND ND ND <br /> Surrogate Recovery 100% 101% 101% 101% 101% 101% <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 /> I 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 /> ANALYST APPROVED BY <br /> 1 <br /> Clary J Cone J es C Phillips <br /> Environmental Lab Director <br />