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' I <br /> EII _ <br /> GROUNDWATER SAMPLING DATA SHEET Well/Piezo ID: U-20 <br /> Site Address: 437 East Miner Avenue,Stockton,Ca. <br /> ENSR Job#: 06940-325-100 Well Piezometer ❑ <br /> Unocal Job#: 0187 <br /> Well Purging: Field Tech(s): 6 <br /> Date Purged: Z`� ` <br /> Purge Method:Disposable bailer/other Weather Conditions: D <br /> Casing Material: <br /> Well Diameter: 2.00 in. <br /> Total Depth: 4.13 ft from TOC volume 3/4'=0.02 1'=0.04 r=.1s 3'=,36 <br /> Depth to Water. - 7 ft from TOC 117actor(VF) 4'=.66 s=1.02 s•=1.50 17=5.80 <br /> Water Column: 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 Odor Other <br /> Removed Potential(ORP) Conductivity <br /> al m I( mVolts °C) (uS/cm) (NTUs <br /> %35 0 <br /> t.2 ,4 © r e <br /> f ori <br /> vY 3 B. r---- G d car <br /> 4 <br /> Sample Collection: <br /> Date Sampled:_ )-r j ay <br /> Sampling Method:Disposable Bailer/Other N <br /> Sample Type: Grab <br /> Sample ID #of containers Container Type Preservation Analysis Time <br /> 5 40 mL glass vial Ice1HC1 TPHg 8015,BTEX 8021,5-04's's 8260 x ' <br /> Comments <br /> i <br /> Signature Date <br /> i r ■� RIM M <br />