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EMS <br /> GROUNDWATER SAMPLING DATA SHEET Well/Piezo ID: U-20 <br /> Site Address: 437 East Miner Avenue, Stockton, Ca. <br /> ENSR No. 06940-325-100 Well Piezometer ❑ <br /> Unocal Na. 187 <br /> Field Techs): <br /> Well Purging: �7 <br /> Date Purged: /(- j T-L � <br /> Purge Method: Disposable bailer/ thor Weather Conditions: <br /> Casing Material: <br /> Well Diameter: 2.00 in. <br /> Total Depth: 74.13 ft from TOC Volume 3/4"=O.02 1'=0.04 2"=A6 3'=.38 <br /> Depth to Water: (: ft from TOC Factor lvl p 4'=.66 5"=1.02 6"=1.50 12"=5.80 <br /> Water Column: YO P ft. <br /> Water Column Volume: gal (WC X VF) 80%Recovery from TOC: =Total Depth-(Water Column X.8)= <br /> Time Volume DO Redox Temperature Specific pH Turbidity Color/Clarity Other Other <br /> Removed Potential (ORP) Conductivity <br /> gal (mg/L mVolts "C yl NTUs <br /> L 1 _ <br /> 2 n 2 i. ( �r <br /> 3 � �f Gil <br /> 4 <br /> Sample Collection: <br /> Date Sampled: - a n <br /> Sampling Melhod;-Dis6osa6le Ba_iie ther a <br /> Sample Type: Grab <br /> Sam le ID #of containers Container 1yee Preservation Analysis Time <br /> ' 5 40 mL glass vial Ice/HCl TPHg 8015,BTEX 8021, 5-O 's 8260 <br /> Comments <br /> i <br /> Signature ri Date <br />