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EMR. <br /> GROUNDWATER SAMPLING DATA SHEET WelllPiezo ID: U-20 <br /> Site Address: 437 l=ast Miner Avenue, Stockton, Ca. <br /> ENSR No. 06940-325-100 Well Piezometer ❑ <br /> Unocal No. 187 <br /> Well Purging: Field Tech(s): <br /> _ i l �`•�lu�"� ��-�1 <br /> Dale Purged: 7, I .5— -.� <br /> Purge Method: Disposable bailer/other vta t c ✓r► Weather Conditions: V'ZXlvl <br /> N Casing Material: �f C <br /> Well Diameter: 2.00 in- <br /> Total Depth: 74.13 ft from TOC Volume 314"=0.02 1"=0.04 2'=.16 3'=.38 <br /> Depth to Water: 3 3 ft from TOC Factor(VF) 4"=.66 5"=1.02 6'=11.50 12"=5.80 <br /> Water Column: ) ft. <br /> Water Column Volume: ._'#- gat(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) (mVolts "C (US/cm) NTUs) <br /> 1- � - tir <br /> 6' 1 e . 5-S 0 rt <br /> C 3 Z(}.5 <br /> 4 <br /> 1r, <br /> Sample Collection: _ <br /> Date Sampled: t �L' �P^•+= I <br /> Sampling Method: able BailerlOther <br /> Sample Type: Grab <br /> Sample ID #of containers Container T pe Preservation Analysis Time <br /> -1.t: 40 mL glass vial Ice/HCl TPHg 8015, BTEX 8021,5-O 's 8260 ` <br /> Comments <br /> Signature �L�-vL� •'1Lt� ;� Date 9- Isles <br /> i i ! <br /> r r� �r � s r■■� irrr r r i e� r �■■� � � � � � � <br />