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DEL-TECH GEOTECHNICAL SUPPORT SERVICES ' MONITORING WELL FIELD LOG 2004 SAMPLE LOCATION/MW - . 105 DATE: 11/3/2004 ' PROJECT NAME: GEORGE S SERVICE. ANALYSIS PERFORMED: SEE CHAIN OF CUSTODY ADDRESS: 1600 DURHAM FERRY ROAD SAMPLE TIME: 17:00 CITY,STATE: TRACY,CA. SAMPLE CONTAINERS: 4 VOA'S SITE CONTACT GEORGE&MAE PRESERVATIVES: HCL CONSULTANT GEOLOGICAL TECHNICS LAB.ANALYSIS BY. SHERWOOD LABS. PROJECT MANAGER ERIC PRICE MONUMENT: FLUSH ' SAMPLER: DEL-TECH. WELL CASING MATERIAL: PVC SIGNED: _%I`$ WELL CASING DIA, 2" / 0.1632 SAMPLE MEDIA: GROUNDWATER P.I.D.READING/ODOR: N/A MUSTY ' TOP OF CASING ELEVATION: MSL COLOR: CLEAR DEPTH TO WATER: (feet.100th's) 12.42 FEET CALC.PURGE VOL.: 3.39 GAL. DEPTH OF WELL: (feet.7100th's) 33.20 FEET TOTAL VOLUME PURGED: 10.17 GAL. ' STANDING WATER COLUMN 20.78 FEET DEPTH OF PUMP 32 FEET FIELD PARAMETERS TIME CUMULATIVE DRAW PUMPING pH E.C. TEMP. O.R.P. DISSOLVED TURBIDITY CASING VOLUME DOWN RATE OXYGEN COLOR ' PER PURGE (D.T.W.) (GPMILPM) (units) (MsMHOS) (Celsius) (Mvolts) (PPM) (N.T.U.) 0 NIA .5 GPM 8.02 1432 20.4 10 0.88 CLEAR 3.39 8.00 1450 20.5 4.0 0.65 " ' 6.78 7.99 1453 20.6 2 0.63 10.17 7.98 1454 . 20:6 -11 0.58 PURGE METHOD: HONDA CENTRIFUGAL PUMP. SAMPLE METHOD: DEDICATED WATERRA INERTIA TUBING. ' D.T.W.AFTER PURGE: D.T.W.AT SAMPLE TIME: 14.79' WELL INTEGRITY: CAP&SEAL ARE SECURE. WELL LOCATION: SEE SITE MAP. tREMARKS: WEATHER: CLEAR SKIES. WIND: NONE QUALITY CONTROL: ALL PURGING EQUIPMENT AND SAMPLING EQUIPMENT WAS CLEANED IN THE ' FIELD WITH A STEAMCLEANER&ALCONOX SOAP. NEW NITRILE GLOVES. CONTAINMENT: D.O.T.17 55 GAL STEEL DRUM OR 60 GAL.POLYDR UM. ' INSTRUMENTATION: Y.S.I.3560 FWWCELL Y.S.I.DISSOLVED OXYGEN METER SOLINIST SLOPE METER THERMODINE 584E P.I.D. KECK RiTERFACE METER TURBIDITY METER i