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E�, <br /> GROUNDWATER SAMPLING DATA SHEET Well/Piezo ID: U-22 <br /> Site Address: 437 East Miner Avenue,Stockton, Ca. <br /> ENSR No. 06940-325-100 Well fin Piezometer ❑ <br /> Unocal No. 187 1 <br /> Well Purging: �! `, <br /> Field Tech(s): f rtc ��ct av <br /> Date Purged: /( !4a� 4 -Ll / <br /> Purge Method: Disposable bailer/other " ' c-.`:t'd Weather Conditions: Gt%dr <br /> Casing Material: At, <br /> Well Diameter: 2.00 in. <br /> Total Depth: 74.06 ft from TOC Volume 314"=0.02 1'=0.04 2"=.16 3"=.38 <br /> Depth to Water: 7 ti ft from TOC Factor(VF) 4"=.66 5"=1.02 6"=1.50 12"=5.80 <br /> Water Column: ft• f r <br /> Water Column Volume: (�. S gal (WC X VF) 80%Recovery from TOC: =Total Depth-(Water Column X '1�•��s <br /> Time Volume DO Redox Temperature Specific pH Turbidity Color/Clarity Other Other <br /> Removed Potential(ORP) Conductivi <br /> gal (mg/L mVolts °C NTUs <br /> 0W. `; e <br /> ` <br /> 2 �. <br /> 31 3 <br /> 4 <br /> Sample Collection: <br /> Date Sampled:_ �.` 7_._ / <br /> Sampling MethodDisposable�aili3f/�ther_���1 fGdf <br /> Sample Type: Grab <br /> Sample ID #of containers Container Type Preservation Analysis Time <br /> 5 40 mL glass vial Ice/HCl TPH9 8015, BTEX 8021, 5-O 's 8260 ` YZ <br /> Comments <br /> Signature __ .. Date—jL-4LL1L - <br /> ff �'f' S• � <br />