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1 <br /> 16 APPENDIX F <br />' CAPTURE ZONE AND CIRCULATION CELL CALCULATIONS <br /> To calculate the dimensions of the circulation cell, capture zone, and down-gradient release zone, <br /> and the captured flow, aquifer data were entered into a PC spreadsheet (calculation sheet) and <br /> the variables Q/(H2v) and a/H were calculated These variables were then used in the following <br /> equations to calculate the pertinent dimensions and captured flow The equations (see next page) <br /> are based on linear interpolations between non-dimensional results of the numerical model <br /> developed by Herrling, et al (1991) (see Appendix G for excerpt) These equations are valid for <br /> Q/(HZv) between 50 and 100, KWT,,K„ = 10, and a/H greater than 0 325 <br /> Definition of variables <br />' Q flow rate through UVB well D maximum spacing of two UVB <br /> casing across the packer wells to capture all natural <br />' groundwater flow between the <br /> wells <br />' H height of aquifer saturated zone Bt top width of capture zone at <br /> being treated upgradient distance of 5H from <br /> UVB well <br /> a average length of screen (upper Bb bottom width of capture zone at <br /> and lower) below water table upgradient distance of 5H from <br />' UVB well <br /> v Darcian velocity Q, upstream flow through capture <br /> zone (captured flow) <br />' S horizontal distance from UVB A cross-sectional area of capture <br /> well to stagnation point zone at upgradient distance of 5H <br />' from UVB well <br />' For the subject site, v, H, Q, QI(H2v), and a/H are 3 8*1077 msec, 4 27 m, 2 M3/h, 80 2, and 0 38, <br /> respectively <br /> 1 <br />' WP61 73942 WP 1096 TX 2 1 <br />