Laserfiche WebLink
1 <br /> 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 GeoEnvironmental, Inc Client Project ID Top Filling Method EPA 5030/8015M 6020 <br /> of Northern California Reference Number 1379 Instrument ID Var-GC1 <br /> 4005 North wilson Way Matrix Water Prepared 12-23-97 <br /> Stockton CA 95205 Analyst Jim Phillips Analyzed 12-2397 <br />' Attn Tim Cuellar Reported 12-29-97 <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 ugll_ ug/L ug1L ug/L ug/L ug1L <br /> LCS Batch # VG-D237W VB-D237W VB D237W VB-D237W VB-D237W VB-D237W <br /> LCS % Recovery 103% 1130/0 91 6% 963% 94 7% 95 7% <br /> Surrogate Recovery 104% 98 5% 98 5% 98 5% 98 5% 98 5% <br /> Control Limits 70-130 % 70-130 % 70 130 % 70 130 % 70 130 % 70 130 <br /> MS/MSD Batch # VG-D237W VB-D237W VB D237W VB-D237W VB-D237W VB D237W <br /> MS % Recovery 96 3% 924% 893% 970% 908% 91 0% <br /> Surrogate Recovery 104% NA NA NA NA NA <br /> MSD % Recovery 99 8% 61 0% 826% 804% 85 3% 84 5% <br /> Surrogate Recovery 104% 961% 96 1% 96 1% 96 1% 96 1% <br /> Relative % Difference 3 29% 287% 7 25% 12 8% 5 85% 5 73% <br /> Methanol Blank ND ND ND NO ND ND <br /> Surrogate Recovery 105% 105% 105% 105% 105% 105% <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 OC limas and recoveries for MS/MSD's are advisory only and are not used to accept or <br /> reject batch results <br /> ANALYST APPROVED BY cv� <br /> Clan.) Cone Jam s C Philkps <br /> jam <br /> Lab Director <br />