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See Appendix J for a tabulation of registered wells in the area, noting that most are dry <br />monitoring wells constructed for the permitting of the proposed Energy Fuels Pinon Ridge Mill. <br />10. Surface Water Control and Containment <br />Surface water runoff from the Last Chance mine drainage area will flow to the detention pond as <br />described in the following paragraph and illustrated in Exhibit D, Map D-1. <br />11. Surface Water Quality Data <br />(a) Runoff from the Last Chance Mine site flows to several swales draining northwest, north, <br />and northeast from the site. Drainage to the northeast across Davis Mesa reaches a pond within a <br />depression in Section 12, T46N, R18W. Overflow from this depression drains to Wild Steer <br />Canyon, a westerly-flowing ephemeral tributary of the Dolores River. Water use classifications <br />for tributaries of the Dolores River in Montrose and Mesa counties (as designated by the <br />Colorado Water Quality Control Commission) are Aquatic Life Warm 2, Recreation E, and <br />Agriculture. <br />There is no perennial surface water flow from the mine site. Although there is minor snow melt <br />runoff, most flow from the site is the result of occasionally heavy thunderstorms in the summer <br />and early autumn. Some of this flow is captured by stock water ponds associated with local <br />cattle ranching. Wildlife also benefit from storm water flow to stock ponds. There are no other <br />known potential future uses of surface water in the mine area. <br />(b) Surface water quality and flow data have not been collected for the ephemeral swales and <br />washes draining the mine site. Any flow is of short duration for a few days each year, if at all. <br />12. Water Quality Monitoring Plan <br />Any groundwater found in the monitoring holes constructed by Nuvemco will be sampled and <br />analyzed on a monthly basis for five (5) successive calendar quarters. After that time, a decision <br />will be made to abandon or permit the boreholes as wells. If significant water gathers in the Last <br />Chance Pit detention ponds, beyond that utilized for dust mitigation, it will be sampled and <br />analyzed. Nuvemco does have Storm Water Permit # COR-040241 from the Water Quality <br />Control Division, Colorado Dept. of Public Health & Environment. <br />13. Climate Data <br />Exhibit K describes the climate in the Permit area. Water balance is not expected to be a concern <br />given the small area of mining and water retention. No stored chemicals or fluid containers are <br />present to be impacted by freezing temperatures. As tabulated in Exhibit K the average <br />maximum daily temperatures are well above freezing and evaporation rates are about 4 times <br />greater than the precipitation. The Last Chance Mine Permit area ranges from about 6300 to <br />6500 feet of elevation. Site specific wind data is not available, but the prevailing winds are <br />generally from west to east. <br />Last Chance Mine - April 2009 T-5