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E��„ <br /> GROUNDWATER SAMPLING DATA SHEET WeIllPiezo ID: U-4 <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): L096 lrt O <br /> Date Purged: f' r 7 <br /> Purge Method: Disposable bailerlother r' V:c,r % '°�+ Weather Conditions: s <br /> Casing Material: <br /> Well Diameter: 2.00 in. <br /> Total Depth: 52.97 ft from TOC Volume 3/411=0.02 V=0.04 2'=.16 3'=.38 <br /> Depth to Water: 3 r,,'0,ft from TOC Factor ff) 4"=.66 5"=11.02 6"=1,50 12"=5.80 <br /> Water Column: z r ••7 7 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) JmVolts) °C (US/CM) NTUs <br /> 7.42 (0.-7 f C> <br /> 2 <br /> rl ` <br /> 4 <br /> Sample Collection: I <br /> Date Sampled: it• <br /> Sampling Method: usable 8ailler/Other <br /> Sample Type: Grab <br /> Sample ID #of containers Container Type Preservation Analysis Time <br /> c{ 5 40 ml_ lass vial Ice/HC1 TPi i 8015, BTE;X 8021, 5-O 's 8260 / <br /> Comments <br /> Signature EL• /� Date <br /> � r r ■■r � � rrr � <br />