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M 19 8 0 — o - <br />r <br />�n Energy Fuels Resources (USA) Inc. <br />v 225 Union Blvd. Suite 600 <br />eFENERGYFUELS Lakewood, CO, US, 80228 <br />303 - 974 -2140 <br />D look 1 1� LI www.energyfuels.com <br />1\ <br />June 10, 2013 <br />Mr. Jamie Blair Bob Oswald <br />Bureau of Land Management Colorado Department of Natural Resources <br />Tres Rios Public Lands Office 691 County Road 233, Unit A2 <br />29211 Hwy. 184 Durango, Colorado 81301 <br />Dolores, CO, 81323 <br />/r <br />Re: Sunday Mine Complex Proposed Low Flow Groundwater Sampling —F-1 tJ /ate► - 14- l ?fi2.o-ra co L. $, <br />Dear Jamie and Bob, <br />We would like to update you on the progress of our recent groundwater monitoring efforts at the Sunday Mine <br />Complex. We completed drilling operations for the MW -SUN3 and MW -TPZI monitoring wells. We are <br />compiling initial groundwater sampling data from the MW -SUN1 and MW -SUN2 monitoring wells that were <br />drilled in the Fall of 2012. Lastly, we are working to determine the most effective ways to sample the <br />monitoring wells in the future. We are proposing to use low -flow sampling methods and equipment for some of <br />these monitoring wells, as discussed on page 2, and we are eager to begin the quarterly monitoring of these <br />wells. Please review the sampling proposal at your earliest convenience and let us know if you have any <br />comments or questions. <br />DRILLING UPDATE <br />Of the 6 groundwater monitoring wells that we planned to drill at the Sunday Complex, the following are <br />complete: <br />• MW -SUN1, also referred to as the East Compliance Well or Sunday 1, was drilled 11/1/2012 <br />• MW -SUN2, also referred to as the West Intermediate Monitoring Well or Sunday 2, was drilled <br />9/25/2012 <br />• MW -SUN3, also referred to as the West Ambient Monitoring Well, was drilled 5/10/2013 <br />• MW -TPZI, also referred to as the Topaz Mine DRA Monitoring Well, was drilled 5/14/2013 <br />Table 1 contains an overview of construction and completion information for these wells. Figure 1 shows their <br />locations within the project area and the completed logs for MW -SUN 1 and MW -SUN2 are included as <br />Attachment A. When logs are complete for MW -SUN3 and MW -TPZI we will send them to you. <br />MW -SUN3 has not yet been developed because it took a little time for the water level to settle after drilling was <br />completed. We measured water levels at all three wells yesterday and MW -SUN3 appears to have stabilized so <br />in the next couple of weeks we will develop the well and collect a groundwater sample. Reseeding was <br />completed at MW -SUN 1 and MW -SUN2 on 5/20/2013; it will be completed at the two new well locations in <br />Sunday Mine Complex I Revision I <br />V. V& CColoradblSwiday Comple Baseline SndieslGroun&aterl Wdl Sampling Plwu DnllingUpdaieMemoWw"ry _PropowdLo -Fio &wa pling_Ri.doex June 2013 <br />