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WELL SAMPLING DATA SHEET <br /> JGeo'I'rans, n�. <br /> ' Project Safeway-Stockton Well Number MW-4 Date 4130102 <br />' Job No L499-101 Sampler(s) Keith Hoofard 1 Megan Scott <br /> Purge Calculation <br /> A Depth to Water (DTW) 1432 feet <br />' B Total Well Depth (TD) 338 feet <br />' C Height of Water(B -A) 1948 feet <br /> D Casing Diameter 4-inch inches <br /> E Gallons/Foot 066 gallons <br /> 2"=0 17 g/ft 4"=0 66 g/ft <br /> F Casing Volume (C x E) 129 gallons <br /> G Purge Volume (E x 3) 39 gallons <br /> H Actual Volume Purged 40 gallons <br /> Recharge (minimal, low, medium, high) High <br /> Purge Equipment Two dis osabale bailers, transport water to 55-gallon drum storage area <br />' Field Conditions Cloud /Scattered Rain Showers throughout the da <br /> Comments Well released pressure when locking cap removed The depth to water <br /> measurement was collected when the water level stabilized approximately <br /> 5 minutes later Vault box set slightly below grade Well cap inact <br />' Field Measurements <br /> Pump Rate Volume Temp EC <br /> Time (gpm) Purged (F) pH (pSlcm) Turbidity <br /> 1535 Hand Bail 15 657 698 1,510 Clear <br /> 1555 Hand Bail 60 662 708 1,489 Clear <br /> 1605 Hand Bad 40 664 704 1,474 Clear <br /> lie DTW(pre-purge) 1432 Sample Order 3 <br /> DTW(post-purge) 1489 <br /> P 1Proiects\Safeway1L4991WeIIData xis\MW-4_04-30-02 <br />