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G-5 <br /> Ennis Draw originates from an area that is approximately 1-1/2 miles to the south of the Permit Area <br /> (e.g.,about 1-1/2 miles south of the Section 12 south line). It then courses directly south to north along <br /> the easternmost portion of the southerly abutting Section 13,entering Section 12(the N1/2 of which is <br /> included in the Permit Area)at or near the Section's extreme southeast corner. It then continues directly <br /> north immediately interior and parallel to the Section 12 east line,and appears to effectively terminate <br /> (possibly due to infiltration) within the SE1/4 of the northerly abutting Section 1. However, the <br /> extended USGS-mapped drainage (alignment) appears to continue on, only to terminate in uplands <br /> approximately three miles north of the Permit Area(more specifically,within the extreme NW1/4 of <br /> Section 30; T3N;R63W),with no visible downstream connection to any surface waters. <br /> Thus,the only surface water features proximal to or within the Permit Area are those associated with <br /> Ennis Draw. CSC has established a 600-ft.wide corridor(the Ennis Draw"Temporary Mining Deferral <br /> Area")which is,at present,excluded from the mine plan. CSC will complete additional evaluation of <br /> the feature in order to ascertain its general mineability(in all or part), in which case portions or all of <br /> the feature may be integrated into the mine plan at a later date. In the event inclusion of some or all of <br /> Ennis Draw is determined technically feasible and economically viable, CSC will undertake such <br /> inclusion via Technical Revision to the Permit,prior to the inception of any mining activity within the <br /> area(s). In the interim,given the 300-ft. (either side)buffer and the low run-off coefficient associated <br /> with the predominately sandy (loess) soils present throughout the Permit Area, no adverse impact is <br /> anticipated with respect to Ennis Draw and/or any of its associated wetlands. <br /> Groundwater Resources <br /> The project area falls within the South Platte River Valley. Surficial aquifers therein generally contain <br /> the shallowest groundwater(where present),and consist of Quaternary deposits of alluvial gravel,sand, <br /> silt,and clay;or,eohan sand and silt(RETTEW;2019). The surficial aquifer associated with the South <br /> Platte River is known to range in thickness from about 20 to 200 ft.and range in width from about 1 to <br /> as much as 15 miles. Inasmuch as the Permit Area is situated in excess of 15 miles to the south of the <br /> course of the South Platte River the site does not readily exhibit the presence of alluvial gravels, nor <br /> have such materials been encountered in geologic investigations or evaluations to date. Instead, the <br /> Keenesburg No. 2 Mine area clearly exhibits the presence of a thick(up to 30 ft. or greater) surficial <br /> layer of eolian(i.e.,wind deposited)sand, and silt,characteristic of a dune-type deposit. <br /> Keenesburg No. 2 Mine_112 Reclamation Operation—November 22, 2019 <br />