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contact with the Point Lookout. 'I'l~e domain is bounded by l~ighmer <br />Creek Canyon which trends across the northern part of the property <br />area. Wells and ground waters on Lightner Crcek are for the most <br />part in stream or bench gravels which are replenished by the surface <br />and sub-surface flow of Lightner Creck. The Menefee and Point Look- <br />out dip away from Lightner Creek to the south, hence ground waters <br />of these formations are not tributary to Lightner Creek. <br />The proposed coal mining operation will not normally disturb <br />or penetrate aquifers in either the Menefee or the Point Lookout. <br />Mining will be restricted to coal seams; strata overlying or underlying <br />the coal will be disturbed as little as possible to avoid diluting the <br />• mined coal and reducing its market value, Similarly the Point Lookout <br />and its contact with the Menefee, and any related aquifers will not be <br />disturbed by the coal mining process. The lowest coal seam of the <br />Menefee is 5- 20 feet above the top of the Point Lookout member. <br />Lithologic units underlying or overlying the coal seams tnay <br />have aquifer characteristics, and if they are exposed as the coal is <br />extracted, may seep water into the opening. The main increment of <br />this water movement would be vertical and across the direction of <br />the best permiability. Therefore the seepage will not normally be <br />significant. This is especially true in the northern part of the pro- <br />perty where potential aquifers are poorly saturated. Past mining <br />• -23- <br />