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f s: DEL—TECH GEOTECHNICAL SUPPORT SERVICES MONITORING WELL FIELD LOG 1998 SAMPLE LOCATION/MW - 4 DATE: 3118198 PROJECT NAME: C&B EQUIPMENT. ANALYSIS PERFORMED: TPH-G,B.T.E.X.,MTBE ADDRESS: 7474 WEST 11TH ST. SAMPLE TIME: 17:10 CITY,STATE: TRACY,CA. SAMPLE CONTAINERS: 2 V.O.A.'S & 1 BLANK SITE CONTACT: FRANK COEHLO PRESERVATIVES: HCL a CONSULTANT: GEOLOGICAL TECHNICS LAB.ANALYSLS BY: SHERWOOD/WEST PROJECT MANAGER MIn/RAY MONUMENT: FLUSH SAMPLER: DEL-TECH WELL CASING MATERIAL PVC SIGNED: WELL CASING DIA.: 2" I 0.1632 SAMPLE MEDIA: GROUNDWATER P.I.D.READING I ODOR: NIA NONE TOP OF CASING ELEVATION: MSL COLOR: LT.BROWN TO CLEAR DEPTH TO WATER: (feet100th's) 6.24 FEET CALC.PURGE VOL.: 2.278272 GAL. DEPTH OF WELL: (feet100th's) 20.20 FEET TOTAL VOLUME PURGED: 7.5 GAL. r STANDING WATER COLUMN: 13.96 FEET DEPTH OF PUMP: NIA FEET FIELD PARAMETERS IA :3 -% TIME CALCULATED DRAWPUMPING pH E.C. TEMP. O.R.P. DISSOLVEIC TURBIDITY VOLUME DOWN RATE OXYGEN COLOR PERPURGE (D.T.W.) (GPMlLPW (unils) (UIMHOS) (Cerus) (Mvolts) (PPM) (N.T.U.) 16:59 0 NIA 2 GPM 7.36 312 18.6 20 N/A LT,BRN. 17:01 2.5 7.38 311 18.8 18 CLEAR 17:03 5 7.36 311 18.1 17 " 17:05 7.5 6.86 7.36 310 19.1 1571 " PURGE METHOD: CENTRIFUGAL PUMP. SAMPLE METHOD: 3'STAINLESS STEEL BAILER W/STAEgLESS STEEL WIRE LINE '- D.T.W.AFTER PURGE: D.T.W.AT SAMPLE 1T%IE. 6.43' WELL INTEGRITY: CAP&SEAL ARE SECURE. AMERICAN LOCK INSTALLED. WELL LOCATION: SEE SITE MAP. - REMARKS: GOOD RECHARGE. WEATHER: OVERCAST SKIES. WIND: CALM QUALITY CONTROL: ALL PURGING EQUIPMENTAND SAMPLING EQUIPMENT WAS CLEANED IN THE f FIEF W11HA STFAMCLFANER h ALCONOX SOAP. NEW NITRILE GLOVES. CONTAINMENT: D.O.T. 17 55 GAL STEEL DRUM OR 60 GAL POLY DRUM. INSTRUMENTATION: Y.S.I.3560 FLOWOU I Y.S.L DISSOLVED OXYGEN MEE"rER SOUNTST SLOPE METER THERMODINE 580E P.I.D. 1 KECK IN' RFACE METER TURBIDUY METER i :;