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DEL-TECH GEOTECHNICAL SUPPORT SERVICES MONITORING WELL FIELD LOG 20041 GLOBAL LD. # T0607700605 SAMPLE LOCATION/MW 2 DATE: 12/16/2004 PROJECT NAME: OLIVAREZ PROPERTY ANALYSIS PERFORMED: SEE C OF C ADDRESS: 300 S.CALIFORNIA STREET SAMPLE TIME: 13:33 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 ERV/MIKE MONUMENT: FLUSH SAMPLER: DEL-TECH/DON LIGHT WELL CASING MATERIAL PVC SIGNED: „'` z WELL CASING DIA.: 211 / 0.1632 SAMPLE MEDIA; GROUNDWATER P.I.D.READING 1 ODOR: N/A FUEL TOP OF CASING ELEVATION; MSI. COLOR: BLACK DEPTH TO WATER: feet.100th's 34.98 FEET CALC.PURGE VOL.: 4.01 GAL. DEPTH OF WELL: feet.100th's 57.90 FEET TOTAL VOLUME PURGED: 12.03 GAL. STANDING WATER COLUMN: 22.92 FEET DEPTH OF PUMP: 55 FEET 77 r 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 (UMHOS) (Celsius) (Mvolts) (PPM) (N.T.U.) 0 N/A .5 GPM 7.21 1950 21 -249 0.28 BLACK 4.01 It 7.21 1950 21.1 -250 0.40 " 8.02 It 7.20 1952 21.2 -255 0.41 " 12.03 7.22 1954 21.2 -259 0.43 " PURGE METHOD: DEDICATED WATERRAPUMP. SAMPLE METHOD: DEDICATED WATERRAFUMP. D.T.W.AFTER PURGE: D.T.W.AT SAMPLE TIME: 35.77' WELL INTEGRITY: CAP&LOCK SECURE. WELL LOCATION: SEE SITE MAP. REMARKS: SHEEN DROPLETS. WEATHER: COLD/OVERCAST. WIND: NW5 QUALITY CONTROL: ALL PURGING E UIPMENT AND SAMPLING EQUIPMENT WAS CLEANED IN THE FIELD WITH A STEAMCLEANER&ALCONOX SOAP. NEW NITRILE GLOVES CONTAINMENT: D.0,T. 17 55 GAL.STEEL DRUM OR 60 GAL,POLYDRUM. INSTRUMENTATION: Y.S.I.556MULTIPROBE SYSTEM Y.S.I.DISSOLVED OXYGEN METER SOLINIST SLOPE METER THERMODINE 580B P.I.D. KECK INTERFACE METER TURBIDITY METER •