Laserfiche WebLink
NEWMONT <br /> GOLDCORR <br /> 2 SITE HYDROLOGY <br /> The following discussion of surface water and groundwater hydrology is an update and summary <br /> of the more detailed information provided in the 2015 Hydrologic Evaluation, which was submitted <br /> and approved by DRMS with Amendment 11 documentation. <br /> 2.1 Surface Water <br /> Regionally, surface water flows from the permit area are tributary to the Upper Arkansas River. <br /> On the south side, surface water generally flows into Theresa Gulch and Bateman Creek, which <br /> are tributaries to Wilson Creek, which then flows into Fourmile Creek and ultimately to the <br /> Arkansas River. On the west side, surface water generally flows into Poverty Gulch, Squaw Gulch, <br /> and Arequa Gulch, all tributaries to Cripple Creek, which flows into Fourmile Creek, which then <br /> flows into the Arkansas River. On the north side, surface water generally flows into Grassy Valley, <br /> a tributary to Beaver Creek. Figure G-1 shows the surface water system including a two-mile <br /> radius around the Cresson Project permit boundary. <br /> Locally, active surface water channels essentially do not exist throughout most of the diatreme- <br /> based Cripple Creek Mining District (District). Due to current mining activities, the presence of <br /> below grade surface mine areas, the relatively high rock permeability of the diatreme, and the <br /> historic lowering of the groundwater table by the area drainage tunnels, precipitation infiltrates <br /> and surface water flows are only rarely observed. Only during significant snowmelt or after heavy <br /> rainstorms is flow observed in the typically dry washes. The stream flow that does occur is seldom <br /> continuous along the channel with surface flow appearing and disappearing in a downstream <br /> direction, while some sections of the stream channel remain dry even during precipitation events. <br /> Surface water quality in the District has remained relatively stable over the monitoring period of <br /> record for most of the monitoring locations although certain historic mine features and activities <br /> in many of the drainages appear to have some influence on surface water quality. <br /> Each of the drainages is discussed separately below. <br /> 2.1.1 Wilson Creek and Tributaries <br /> The activities associated with Amendment 13 do not affect the Wilson Creek drainage. The <br /> Enhanced Management Ponds ("EMPs") will remain in place to control surface water flows from <br /> the existing facilities in the Wilson Creek drainage. <br /> Cripple Creek&Victor Gold Mining Company Exhibit G <br /> Cresson Project Amendment 13 <br /> 3 <br />