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Portions of haulroads, topsoil stripping areas and mining areas are projected for <br />the current permit term (2013-2017) outside of the currently approved drainage <br />and sediment control plan boundaries. Given this, the Division proposed to <br />approve the renewal application (RN6) with the following stipulation: <br /> <br /> Stipulation No. 21: <br /> <br />The operator must submit and receive approval for a permit or technical <br />revision to update the drainage and sediment control plan prior to any <br />disturbance outside of the currently approved drainage and sediment control <br />boundary. <br /> <br /> <br />This stipulation is still in effect. <br /> <br /> <br /> <br />D. Surface and Ground Water Monitoring <br /> <br />l. The applicant will conduct monitoring of ground water in a manner approved <br />by the Division. The ground water monitoring plan can be found in Section <br />4.8.5.2, Vol. IV of the permit application (4.05.13(l)). <br /> <br />2. The applicant will conduct monitoring of surface water in a manner approved <br />by the Division. The monitoring plan was submitted under 2.05.6(3)(b)(iv) <br />and can be found in Section 4.8.5.1 of the permit application, Vol. IV <br />(4.05.l3(2)). <br /> <br />The Division had reviewed the surface and ground water monitoring plans as part <br />of the renewal process with RN6. The operations plans with PR7 are not <br />significantly different from RN6. These monitoring plans are adequate to monitor <br />for the development of impacts, if any should develop. Well GP-09 has been <br />designated the groundwater point of compliance for the Third White Sandstone <br />aquifer, and the Coy well is the point of compliance for the Flume Gulch <br />Alluvium. <br /> <br />No new or revised water monitoring is being proposed under PR07. <br /> <br /> E. Probable Hydrologic Consequences <br /> <br />The model for leachate formation and migration at the Trapper Mine is based on a <br />study conducted by the U.S. Geological Survey at the Seneca II Mine in Routt <br />County, approximately 14 miles east of the Trapper Mine (U.S. Geological <br />Survey Water Resources Investigations Report 92-4187). The model is described <br />in the probable hydrologic consequences of the permit application (section 4.8), <br />and is summarized below. <br /> <br /> Ground Water Impacts: <br /> <br /> <br />30 <br /> <br />Trapper MineJuly 9, 2013 <br /> <br />