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DEL,-TECH GEOTECHNICAL SUPPORT SERVICES MONITORING WELL FIELD LOG 2004 07 Maz SAMPLE LOCATION/MW - 107 DATE 11/3/2004 PROJECT NAME: GEORGE S SERVICE. ANALYSIS PERFORMED: SEE CHAIN OF CUSTODY ' ADDRESS: . 1600 DURHAM FERRY ROAD SAMPLE TIME: 10:24 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: WELL CASING DIA.: 2" / 0.1632 SAMPLE MEDIA: GROUNDWATER P i.D.READING/,ODOR: N/A NONE TOP OF CASING ELEVATION: MSL COLOR: CLEAR DEPTH TO WATER: (£eet lWth's) 12.73 FEET CALC.PURGE VOL.: 6.07 GAL. DEPTH OF WELL: (£eet.100th'.$) 49.90 FEET TOTAL VOLUME PURGED: 18.20 GAL. STANDING WATER COLUMN: 37.1.7 FEET DEPTH OF PUMP: 48 FEET FIELD PARAMETERS TIME CUMULATIVE DRAW PUMPING pH E.C. TEMP. O.RP. DISSOLVED TURBIDITY CASING VOLUME DOWN RATE OXYGEN COLOR PER PURGE (D.T.W.) (GPM/LPM) (units) (MsMHOS) (Celsius) (mvolts) (PPM) (N.T.U.) ' 0 NIA .5 GPM 7.98 1415 18.4 34 1.74 CLEAR 6.07 7.98 1692 20.3 15 1.53 " 12.13 7.99 1691 20.4 10 1.99 " ' 18.20 7.99 1702 20.4 8 1.58 " PURGE METHOD: HONDA CENTRIFUGAL PUMP. SAMPLE METHOD: DEDICATED WATERRA INERTIA TUBING. ' D.T.W.AFTER PURGE: D.T.W.AT SAMPLE TIME: 15.83' WELL INTEGRITY: CAP&SEAT.ARE SECURE. WELL LOCATION: SEE SITE MAP, ' REMARKS: 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.POLYDRUM. ' INSTRUMENTATION: Y.S.I.3560 FLOWCELL Y.S.I.DISSOLVED OXYGEN METER SOLINIST SLOPE METER THERMODINE 580B P.I.D. KECK INTERFACE METER TURBIDITY METER