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�r � �r r �■r r rr r� rr� �r rr r r� r rr r r� r <br /> GROUNDWATER SAMPLING DATA SHEET Well/Piezo ID: U-21 <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): <br /> Date Purged: ; <br /> Purge Method: Disposable baile �J: Weather Conditions: v.k� <br /> r! the I <br /> Casing Material: ' Ott' <br /> Well Diameter: 2.00 in. <br /> Total Depth: Y. ,, . 119.76 ft from TOC Volume 3/4'=0.02 1"=0.04 2"=.16 3'=.38 <br /> Depth to Water: ft from TOC iFactor(VF) 4"=.66 5"=1.02 6"=1.50 12"=5.80 <br /> Water Column: Z ft. <br /> Water Column Volume: l 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 m IL mV01ts °C t4 NTUs <br /> 0 , (4 - ` ^ <br /> • if Z <br /> 3 - tt to <br /> 4 <br /> Sample Collection: ` <br /> Date Sampled: <br /> Sampling Method: Dle bailer/ e <br /> Sample Type: 1. (: e <br /> Grp _••-- .... " <br /> Sample ID #of containers Container Type Preservation Analysis Time <br /> - s 5 40 mL glass vial Ice/HCl TPHg 8015,BTEX 8021,5-O 's 8260 � <br /> Comments <br /> Date <br /> Signature ��' ^ T <br />