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r� � _ rr ■r r rr a. rr r� r r r� r �r r r r r■� r <br /> GROUNDWATER SAMPLING DATA SHEET WeII/Piezo ID: U-13 <br /> Site Address: 437 East Miner Avenue, Stockton, Ca. <br /> ENSR No. 06940-325-100 Well Piezometer ❑ <br /> Unocal No. 187 <br /> Well Purging: Field Tech(s): PIO- i:j*L1jAvil'N <br /> Dale Purged: (' c I / <br /> Purge Method: Disposable bail 7�h�' u v Weather Conditions: .!r f -J0 7Z <br /> Casing Material: il" <br /> Well Diameter: 2.00 in. <br /> Total Depth: 74.85 ft from TOC Volume 314"=0,02 1"=0.04 2"=.16 3"=.38 <br /> Depth to Water: ft from TOC Factor(VF) 4'=.66 5"=1.02 6"=1.50 12"=5.80 <br /> Water Column: ft. r <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 /> al) (mg/L) (mVolts °C) (NTUs <br /> 7- <br /> 3 <br /> 4 <br /> Sample Collection: <br /> Coate Sampled:_ <br /> Sampling Metho s osable B ' r therG6 <br /> Sample Type: Grab <br /> Sam le ID #of containers Container Type Preservation Analysis Time <br /> ' 5 40 mL glass vial Ice/HCl TPHg 8015, BTEX 8021, 5-O 's 8260 l <br /> Comments <br /> _ ,- ., Date <br /> Signature <br />