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0,,-F,ENE)?9YFUELS <br />Energy Fuels Resources (USA) Inc. <br />225 Union Blvd. Suite 600 <br />Lakewood, CO, US, 80228 <br />303 - 974 -2140 <br />www.energyfuels.com <br />table. We have set a standard naming convention now but the information produced in the past (e.g. <br />sampling results) contains the old names. We have added clarification in the Drilling Update portion of <br />the text noting the old and new names. We have also added the new names to the information presented <br />in the appendices. <br />5. In the WQ analyses, there are 2 for 12/10/12 (designated as Sunday 1 and Sunday 65), and 2 for <br />1/23/13 (called Sunday #2 and Sunday #2 65). Can you state which analysis refers to which monitoring <br />well? Also I think these need to be correctly and consistently named in future WQ analyses. When the <br />sample was collected at MW -SUN 1 it was labeled Sunday 1 and a second sample was taken <br />immediately after and labeled Sunday 65. This second sample was collected for QC purposes and will <br />be used to check the laboratory results. In the case of MW -SUN2, the first sample collected was labeled <br />Sunday #2. A second sample was taken immediately after and labeled Sunday #2 65. Normally QC <br />duplicates are not presented, or are called out differently, in a formalized results table but we have not <br />yet had a chance to review and prepare this information for reporting. In the future, the samples will be <br />labeled with their new names (MW-SUN 1, etc.) and DUP will follow the initial name in order to <br />identify the QC duplicate. <br />6. Also, I don't understand what is meant in your letter by the samples for Sunday 65 and Sunday #2 65 <br />being "duplicates." As stated above, Duplicates refers to the second sample taken for QC purposes. <br />Once the full sampling program is up and running, all the wells will be sampled in the same time period <br />and a single QC duplicate will be collected to verify the laboratory results for the full batch of samples. <br />As far as the low flow pump method goes, we see no problem with it given the circumstances of slow <br />well recharge. If you could shed a little light on my questions above, our office can send a letter <br />formally confirming our approval of the proposed sampling program. <br />Thanks - Bob <br />Please let me know if you have any additional thoughts or comments. <br />Sincerely, <br />FIJI I I AI W-0`0& <br />MA I "M <br />MIN <br />Andrea Reither <br />Environmental Permitting Specialist <br />(303) 389 -4133 <br />areithergenergyfuel s.com <br />Attachments <br />cc: D. White, F. Filas, R. Fisher, David Turk (Energy Fuels), Mark Nelson (CDM Smith), Bruce Smith <br />(Western Water & Land) <br />Sunday Mine Complex 2 Revision 0 <br />VV (Colorado Sunday Compl" Baseline. SldieslGrmndwmerl Well Sampling PlaniDniingUpdate hlemd Sunday _ ProposedLowF lowSamplingResponseI.eiter.do" June 2013 <br />