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DEL-TECH GEOTECHNICAL SUPPORT SERVICES MONITORING WELL FIELD LOG 2004/GLOBAL I.D. # T0607700605 SAMPLE LOCATION/MW- 1 DATE: 3/23/2004 .. ... . ...... ............... PROJECT NAME: OLIVAREZ PROPERTY ANALYSIS PERFORMED: SEE C OF C ADDRESS: 300 S.CALIFORNIA STREET SAMPLE TIME: 12:15 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 MONUMENT: FLUSH SAMPLER: DEL-TECH WELL CASING MATERIAL, PVC SIGNED: WELL CASING DIA. : 2" / 0.1632 SAMPLE MEDI : GROUNDWATER P.I.D.READING/ODOR: N/A STRNG. FUEL TOP OF CASING ELEVATION: MSL COLOR: DARK GREY TO LIGHT GREY DEPTH TO WATER: feet.100th's 33.17 FEET CALL.PURGE VOL.: 3.69 GAL. DEPTH OF WELL: feet.100th's 55.78 FEET TOTAL VOLUME PURGED: 11.07 GAL. STANDING WATER COLUMN: 22.61 FEET DEPTH OF PUMP: 53 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.) (GPMILPM) (units) (UMHOS) (Celsius) (Mvolts) (PPM) (N.T.U.) 0 NIA 5 GPM 7.46 1268 21.2 -83.9 0.93 DK.GREY 3.69 " 7.32 1290 21.5 -109.7 0.38 LT.GREY 7.38 7.32 1309 21.4 -1079 0.53 " 11.07 7.30 1314 21.4 -109.2 0.67 " PURGE METHOD: DEDICATED WATERRA PUMP. SAMPLE METHOD: DEDICATED WATERRA PUMP. D.T.W.AFTER PURGE: D.T.W.AT SAMPLE TIME: 38.04' WELL INTEGRITY: CAP&SEAL ARE SECURE. LOCK INSTALLED.. WELL LOCATION: SEE SITE MAP. REMARKS: WEATHER: CLEAR&COOL. 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.O.T. 17 55 GAL. STEEL DRUMOR 60 GAL.POLY DRUM. INSTRUMENTATION: Y.S.I.556 MULTIPROBE SYSTEM Y.S.I.DISSOLVED OXYGEN METER SOLINIST SLOPE METER THERMODINE 580B P.I.D. KECK INTERFACE METER TURBIDITY METER 0 OF DRUMS ON SIGHT: WATER: 15 SOIL: 0