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. DEL-TECH GEOTECHNICAL SUPPORT SERVICES MONITORING WELL FIELD LOG 2003/GLOBAL I.D. # T0607700605 SAMPLE LOCATION/MW DATE: 6/25/2003 PROJECT NAME: OLIVAREZ PROPERTY ANALYSIS PERFORMED: SEE C OF C ADDRESS: 300 S.CALIFORNIA STREET SAMPLE TIME: 18:00 CITY,STATE: STOCKTON,CA. SAMPLE CONTAINERS: 4 V,O.A.'s SITE CONTACT: NONE PRESERVATIVES: HCL CONSULTANT: FOOTHILL ENG. I LAB.ANALYSIS BY: SHERWOOD LABS PROJECT MANAGER IRV MONUMENT: FLUSH SAMPLER: DEL-TECH WELL CASING MATERIAL PVC SIGNED: WELL CASING DIA. : 2" / 0.1632 SAMPLE MED GROUNDWATER P.I.D.READING/ODOR: NIA NONE TOP OF CASING EL TION: MSL COLOR: LIGHT BLACK DEPTH TO WATER: (feet100th's) 32.50 FEEI CALL.PURGE VOL.: 11.75 GAL. DEPTH OF WELL: (feet100th's) 104.48 FEET TOTAL VOLUME PURGED: 30 GAL. STANDING WATER COLUMN: 71,98 FEET DEPTH OF PUMP: TUBING 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.) (GPM/LPM) (units) (UMHOS) (Celsus) (Mvolts) (PPM) (N.T.U.) 0 NIA 1 GPM 7.38 1891 21.8 -263.7 0.45 LT. BLACK 12 7.40 1921 1 21.7 -229.1 0.55 " 24 DRY 7.42 1932 1 21.5 -234.2 0.54 " 36 " 7.44 1938 21.6 -256.8 0.48 " PURGE METHOD: DEDICATED WATERRA PUMP. SAMPLE METHOD: DEDICATED WATERRA PUMP. D.T.W.AFTER PURGE: D.T.W.AT SAMPLE TIME: 53.27' WELL INTEGRITY: CAP&SEAL ARE SECURE, NEW LOCK INSTALLED.. WELL LOCATION: REMARKS: WEATHER: CLEAR SKIES. 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 METER SOLINIST SLOPE METER THERMODINE 584E P.I.D. KECK INTERFACE METER TURBIDITY METER #OF DRUMS ON SIGHT: WATER: SOIL: