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DEL-TECH GEOTECHNICAL SUPPORT SERVICES MONITORING WELL FIELD LOG 1999 SAMPLE LOCATION/MW - 4 DATE: 9 PROJECT NAME: SINCLAIR TRUCKING ANALYSIS PERFORMED: TPH-GAS,B.T.X.E.,M.T.B.E. ADDRESS: 2780 LINNE ROAD SAMPLE TIME: 16:10 CITY,STATE: TRACY,CA SAMPLE CONTAINERS: 3 V.O.A.'s/I BLANK SITE CONTACT,, PRESERVATIVES: HCL CONSULTANT: GEOLOGICAL TECHNICS.INC. LAB.ANALYSIS BY: BSKLABS PROJECT MANAGER RAY OR MIKE MONUMENT: FLUSH SAMPLER: I DEL-TECH WELL CASING MATERIAL PVC SIGNED: WELL CASING DIA.: 21, 0.1632 SAMPLE MEDIA GROUNDWATER P.I.D.READING/ODOR: N/A TOP OF CASING 1FT RVA TION- MSL COLOR; LIGHT BROWN TO CLEAR DEPTH TO WATER: (feet.100th's) 11.40 FEET CALC.PURGE VOL.: 1,449216 GAL, DEPTH OF WELL: (feet.100th's) 20.28 FEET TOTAL VOLUME PURGED: 6 GAL, STANDING WATER COLUMN: 8.88 FEET DEPTH OF PUMP: FEET FIELD PARAMETERS ..... ........ TIME CASING DRAW PUMPING pH E.C. ITEMP.LO.RI.P. ISSOLVE] TURBIDITY VOLUME DOWN RATE OXYGEN COLOR PERFURGE (D.T.W.) (GPMILPM) (units) (tismilm (Cerus) (m'.It. (ppm) (N.T.U.) 0 N/A 1.0 GPM 7.59 2410 19.7 105 N/A LT.B RN. 2 7.55 2400 19.6 96 CLEAR 4 7.40 2440 19.3 68 6 7.57 2430 18.4 70 77—7777777 PURGE METHOD: CENTRIFUGAL PUMP 11)2"DEDICATED TUBING SAMPLE MFT—HOD: I'STAINLESS STEEL BAILER. D.T.W.AFTER PURGE: D.T.W.AT SAMPLE TIME: 12.86' WELL INTEGRITY: CAP&SEAL ARE SECURE. AMERICAN LOCK IS INSTALLED. WELL LOCATION: NORTHERN MOST IN THE STREET. REMARKS; WEATHER: OVERCAST SKIES. WIND: NW5 QUALITY CONTROL: AU PURGING EQ UIPMENT AND SAMPLING EQUIPMENT WAS CLEANED IN THE FIELD WITHA STEAMCLEANER&ALCONOX SOAP, NEW NITRILE GLOVES CONTAINMENT: D.D.T.17 55 GAL STEEL DRUM OR 60 GAL POLY DRUM. INSTRUMENTATION: Y.S.I.35450 FLOWCELL Y.S.I.DISSOLVED OXYGEN METER SOLINIST SLOPE METER THER.MODINE 5808 RID. KECK INTERFACE Nffi-IER TURBIDITY METER