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EMM. <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 No. 187 <br /> Well Purging: Field Tech(s): 1.1.6tz <br /> bate Purged: �'� �U� (do <br /> Purge Method: Disposable baiierlother, Weather Conditions: <br /> Casing Material: _ ?U C-- <br /> Well Diameter: 2.00 in. <br /> Total Depth: 74.13 ft from TOC volume 3/4'=0.02 1"=D.04 2"=.16 3"=.38 <br /> Depth to Water: 2i 2 A ft from TOC Factor(VF) 4"=.66 5--1.02 6"=1.50 12"=5.80 <br /> Water Column: � 1-7 ft. <br /> Water Column Volume: gal (WC X VF) 80% Recovery from TOC: =Total Depth-(Water Column X.8)_ q ( M <br /> Time Volume DO Redox Temperature Specific pH Turbidity Calor/Clarity Other <br /> Removed Potential (ORP) Conductivity <br /> al (mg/L mvolts °C st NTUs <br /> Z'Z- D �� 7341 <br /> Z 1 2 c �« <br /> p. <br /> 4 <br /> Sample Collection, <br /> Date Sampled: <br /> Sampling Method: D' po9561e Balle they <br /> Sample Type: Gr <br /> Sam le ID #of containers Container Type Preservation Analysis Time <br /> -71(7 5 40 mL glass vial Ice/HCl TPH9 8015,BTEX 8021, 5-O s 8260 G <br /> Comments <br /> / / L <br /> Signature / Date R s <br /> rr Ir � r rr r r r r■ rr r r r r rr ■r e r r <br />