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DEL-TACH GEOTECHNICAL SUPPORT SERVICES MONITORING WELL FIELD LOG 2003 SAMPLE LOCATION/MW 3 DATE: 10/16/2003 PROJECT NAME. SINCLAIR TRUCKING ANALYSIS PERFORMED. SEE CHAIN OF CUSTODY ADDRESS: 3790 W.LINNE ROAD, SAMPLE TIME: 14:20 CITY STATE: TRACY,CA. SAMPLE CONTAINERS: 4 V.O.A.'S SITE CONTACT: PRESERVATIVES: HCI. CONSUL`T'ANT: GEOLOGICAL TECHNICS INC. LAB.ANALYSIS BY: SHERWOOD LAB. ' PROJECT MANAGER ERIC PRICE MONUMENT: FLUSH SAMPLER: I DIEL-TECH WELL CASING MATERIAL PVC SIGNED: kx, WELL CASING DIA. : 2" 0.1632 ' SAMPLE MED GROUNDWATER P.I.D.READING I ODOR: NIA NONE TOP OF CASING ELEVATION: MSL COLOR: BROWN TO CLEAR DEPTH TO WATER: (feet.100th's) 12.43 FEET CALC.PURGE VOL.: 1.35 GAL. DEPTH OF WELL: (feet.100th's) 20,68 FEET TOTAL VOLUME PURGED: 4.04 GAL. ' STANDING WATER COLUMN: 8.25 FEET DEPTH OF PUMP 20 FEET FIELD PARAMETERS TIIVIE CUMULATIVF DRAW PUMPING pH E.C. TEMP. O.R.P. DISSOLVED TURBIDITY CASING VOLUME DOWN RATE OXYGEN COLOR PERPURGE (D.T.W.) (GPM/LPM) (mitts) (USMIIO (Celsius) (Mvolts) (PPM) (N.T.Tl) ' 0 NIA .5 GPM 7.94 2030 21.9 18 0.60 CLEAR 1.35 7.79 2237 21.6 -29 0.45 2.69 7.77 1956 21.4 -38 0.43 " 4.04 7.75 1948 21.5 -46 0.39 " ' PURGE METHOD: DEDICATED WATERRA PUMP. SAMPLE METHOD: DEDICATED WATERRA PUMP. ' D.T.W.AFTER PURGE: D.T.W.AT SAMPLE TIME: 15.05' WELL INTEGRITY: CAP&SEAL ARE SECURE. AMERICAN LOCK IS INSTALL ED, WELL LOCATION: SEE SITE MAP, REMARKS: ' WEATHER: CLEAR WIND: NONE QUALM CONTROL: ALL PURGING EQ UIPMENT AND SAMPLING EQUIPMENT WAS CLEANED IN THE ' FIELD WITH A STEAMCLEANER&ALCONOX SOAP. NEW NITRILE GLOVES. CONTAINMENT:_ D.O.T.1755 GAL STEEL DRUM OR 60 GAL.POLY DRUM - ——- INSTRUMENTATION: Y.S.I.3560FLOWCELL Y.S.I.DISS OLVED OXYGEN METER ' SOLINIST SLOPE METER THERMODINE 580B P.I.D. KECK INTERFACE METER TURBIDITY METER 1