Laserfiche WebLink
C- 2010 -089 PAR Part 2 <br />New Horizon North Mine <br />5 -Jan -2011 <br />Page 4 of 13 <br />downgradient direction (i.e., the southwest end of the southernmost mineable block). WFC has <br />other existing monitoring wells in this general vicinity that may be suitable and could <br />potentially be included in the monitoring plan for this purpose. <br />Additionally, there is no discussion of groundwater points of compliance for the proposed <br />project. Please review your ground water monitoring program specific to establishing a <br />groundwater point (or points) of compliance at the New Horizon North Mine, and specify <br />which well or wells will be available as point of compliance well(s). The PAP should <br />address the need for points of compliance and be updated accordingly. The Division <br />believes that a meeting would be beneficial to clarify and discuss our questions regarding <br />the need for additional downgradient monitoring and point(s) of compliance. <br />8. On pages 6 and 8 water quality standards are referenced including drinking water, livestock <br />and agricultural quality standards. The appropriate standards to use are WQCC Regulation <br />No. 41, The Basic Standards for Ground Water. Please provide a reference for the standards <br />that are referred to on pages 6 and 8 and describe how they are being utilized here. <br />9. Table 2.04.7 -3 is labeled 7.04.7 -3. Please correct this error. <br />10. The origin of the water quality standards listed on Table 2.04.7 -3 should be footnoted on the <br />table and further described in text (see Item 8 above). <br />11. On page 11 Springs and Seeps are described. There are three identified spoil springs at the <br />New Horizon 1 Mine as described but it is unclear what their current status is. This should <br />be added to the discussion. Please describe in detail the existing spoil springs at the New <br />Horizon Mine #1 include a discussion of whether or not they are still discharging and whether <br />or no they are being monitored. If applicable, add to the discussion the approximate time that <br />monitoring ceased for all spoil spring locations. <br />12. Please add a statement to the Springs and Seeps section whether or not there are any <br />naturally occurring springs within or adjacent to the permit area. <br />13. Under the Present Groundwater Use section, WFC states that "Thirty four wells were <br />identified and are located as shown on Map 2.04.7 -8." It appears that only about 25 wells <br />are shown on this map. Please update the map accordingly. <br />14. The first paragraph at the top of page 13 should be corrected. WFC indicates that none of <br />the wells within a one mile radius of the NHN permit boundary draws its water from the <br />Dakota Formation. Three wells listed on the Table 2.04.7 -4 are indicated as completed in <br />the Dakota Formation. Although these are only monitoring wells that are operated by <br />Montrose County this statement should be clarified. Also in the same paragraph the last <br />sentence should be modified. The Burro Canyon Formation further isolates the Brushy <br />Basin Member of the Morrison Formation, and WFC has illustrated the Burro Canyon <br />Formation on Geologic Cross - Sections A -A' and B -B'. Therefore, it would be appropriate <br />to add the following to the end of the last sentence in the first paragraph of page 13: "...and <br />mudrock of the Burro Canyon Formation." <br />15. On Map 2.04.7 -1, Spoil. Springs (SS #1 -3) should be added to the legend. Also on this map <br />the 2 nd Park Lateral should be designated with a different symbol than the same one used for <br />the natural drainages Glasier, Meehan, and Nygren Draws. <br />