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u DEL-TECH GEOTECHNICAL SUPPORT SERVICES MONITORING WELL FIELD LOG 2005 SAMPLE LOCATION/MW- 4 DATE: 12/16/2005 t PROJECT NAME: VALLEY WATER ANALYSIS PERFORMED: SEE CHAIN OF CUSTODY ADDRESS: 612 N. BUENA VISTA SAMPLE TIME: 11:38 CITY STATE: STOCKTON,CALIF. SAMPLE CONTAINERS: 1 CONTAINER/4 V.O.A.'S ' SITE CONTACT: PRESERVATIVES: NEAT/HCL CONSUL'T'ANT: GEO-PHASE ENVIRONMENTAL LAB.ANALYSIS BY: ARGON PROJECT MANNAGEI STEVE LANKFORD MONUMENT: FLUSH SAMPLER: DEL-TECH/DON LIGHT WELL CASING MATERIAL: PVC SIGNED: '` WELL CASING DIA. : 2" / 0.1632 SAMPLE MEDIA: GROUNDWATER P.I.D.READING/ODOR: N/A NONE ' TOP OF CASING ELEVATION: MSL COLOR: GREY DEPT FI TO WATER: feet.100th's 8.63 FEET CALL.PURGE VOL.: 1.80 GAL. DEPTH OF WELL: feet.100th's 19.65 FEET TOTAL VOLUME PURGED: 5.40 GAL. STANDING WATER COLUMN: 11.02 FEET DEP'T'H OF PUMP: 18 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.) (GP,, I,Pi% (units) (U%MHOS) (Celsius) (Mvolts) (PPM) (N.T.U.) 0 N/A .2 GPM 7.53 7018 22.3 -9 0.22 GREY 180 7.70 7332 22.9 -18 0.28 3.60 7.94 7443 22.8 -33 0.30 5.40 8.00 7459 22.8 -42 0.36 PURGE METHOD: DEDICATED WATERRA PUNIP. SAMPLE METHOD: DEDICATED WATERRA PUMP. D.T.W.AFTER PURGE: D.T.W.AT SAMPLE TIME: 8.72' WELL INTEGRITY: CAP&SEAL ARE SEC(.IRE. AMERICAN LOCK INSTALLED. WELL WCATION: SEE SITE.MAP. REMARKS: WEATHER: COLI)/OVERCAST. N47ND: NW5 QUALITY CONTROL: ALL PURGLVG E UIPlf=AArD SAUfPLING E GTPAfF:NT WAS CLEAAIED IN THE FIELD WITH A STEArbfCLF.ANER&ALCONO.Y SOAP. NEW NITRILE GLO PFS. ' CONTAINMENT: D.G.T. 17.55 GAL.S7HEL DRUM OR 60 GAL.POLY DRUM. INSTRUNIENTATION: Y.S.I.3560 FLOWCELL Y.S.I.DISSOLVED OXYGEN METER SOLMST SLOPE METER THERMODINE.580B P.I-D- KECK INTERFACE METER TURBIDITY METER 1