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' WELL SAMPLING DATA SHEET <br /> �_.Geo Trans, Inc <br /> Project Safeway-Stockton Well Number MW-4 Date 7124102 <br /> Job No L528-101 Sampler(s) Keith Hoofard <br />' Purge Calculation <br /> A Depth to Water (DTVII) 1565 feet <br />' B Total Well Depth (TD) 338 feet <br /> C Height of Water (B -A) 1815 feet <br /> ' D Casing Diameter 4-inch inches <br /> ' E Gallons/Foot 066 gallons <br /> 2"=0 17 gift,4"=0 66 9/ft <br /> ' F Casing Volume (C x E) 120 gallons <br /> G Purge Volume (E x 3) 36 gallons <br /> H Actual Volume Purged 36 gallons <br /> Recharge (minimal, low, medium, high) High <br /> Purge Equipment 2" Grundfos sub pump, 112" poly discharge tube, disposable bailer <br /> Field Conditions Sunn , up er 80s to low 90s <br /> Comments Start pump @ 1122, intake set at 30 feet bgs <br /> Pump off @ 1138, pull sample with disposable bailer <br /> Water level potentially influenced by pumpinRat MW-6 and MW-5 <br /> ' Field Measurements <br /> Pump Rate Volume Temp EC <br /> Time (gpm) Purged (F) H (ps/cm) Turbidity <br /> 1126 -22 12 72 682 1,442 Clear <br /> ' 1131 - 22 24 694 679 1,577 Clear <br /> 1138 - 22 36 693 673 1,542 Clear <br /> ' DTW(pre-purge) 1570 Sample Order _ 3 <br /> DTW(post-purge) 166121142 <br /> 1 PIProjects\Safewaylt-5261We11Data xls1MW-4_07-24-02 <br />