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ia• DEL-TECH GEOTECHNICAL SUPPORT SERVICES MONITORING WELL FIELD LOG 2003/GLOBAL I.D. # T0607700605 SAMPLE LOCATION/EW - 1 DATE: 122/17/2003 PROJECT NAME: OLIVAREZ PROPERTY ANALYSIS PERFORMED: SEE C OF C ADDRESS: 300 S.CALIFORNIA STREET SAMPLE TIME: 13:30 CITY,STATE: STOCKTON,CA. SAMPLE CONTAINERS: 4 V.O.A.'s SITE CONTACT: NONE PRESERVATIVES: HCL CONSULTANT: FOOTHILL ENG. LAB.ANALYSIS BY: SHERWOOD LABS PROJECT MANAGER IRV MONUMENT: FLUSH SAMPLER: DEL-TECH WELL CASING MATERIAL PVC SIGNED: WELL CASING DIA. : 2" / 1.456 SAMPLE MEDIA: GROUNDWATER P.I.D. READING I ODOR: N/A FUEL TOP OF CASING ELEVATION: MSL COLOR: LIGHT GREY TO BROWN DEPTH TO WATER: (feet.100th's) 33.95 FEET CALC.PURGE VOL.: 37.93 GAL. DEPTH OF WELL: (feet.100th's) 60.00 FEET TOTAL VOLUME PURGED: 113.79 GAL. STANDING WATER COLUMN: 26.05 FEET DEPTH OF PUMP: 58 FEET FIELD PARAMETERS TIME CUMULATIVE DRAW PUMPING hH E. C. TEMP. O.R.P. DISSOLVED TURBIDITY CASING VOLUME DOWN RATE OXYGEN COLOR PERPURGE (D.T.W.) (GPM/LPM) (units) (UMHOS) (Celsius) (Mvolts) (PPM) (N.T.U.) 0 NIA 10 GPM 7.36 1361 20.2 -74.7 1.48 LT.GREY 37 93 7.53 1359 20.9 -104.5 1.14 BROWN 75.86 7.34 1268 20.1 -78.9 1.61 113.79 7.33 1202 18.6 -106.2 1.98 PURGE METHOD: DEDICATED P. q SAMPLE METHOD: et D.T.W.AFTER PURGE: D.T.W.AT SAMPLE TIME: 38.55' WELL INTEGRITY: CAP&SEAL ARE SECURE. LOCK INSTALLED- WELL LOCATION: REMARKS: WEATHER: OVERCAST&COLD WIND: NW5 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.POLY DRUM. INSTRUMENTATION: Y.S.I.556 MULTIPROBE SYSTEM Y.S.I.DISSOLVED OXYGEN ME'T'ER SOLINIST SLOPE METER THERMODINE 580E P.I,D. ICECK INTERFACE METER TURBIDITY METER #OF DRUMS ON SIGHT: WATER: SOIL: