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<br />above. However, since [hc highway and creek channel figure prominently in the operation, please revise the map or <br />explain the lack of correlation. <br />G. Some of the property lints for the parcels depicted north of the permit area arc not shown a full 200 tbct from <br />the permit aroa bonndaly, vld it is not clear if all applicable owners of property arc, in fact, namod ou the map, eor <br />can the Division verify that al] have becu notified. Likewise, since this abuts and includes a shoR portion of the <br />CI7C)l' righC-of-way, there may be additional owners of utilities in that area. If there are additialal entities, please <br />identify ihcnt, and ensure they are also notified as required. <br />Exhibit B~Site Description (Rule G.3.2) <br />7. The site contains no developed soil ,according to your description. in the mining plan You conuni[ to separating <br />and saving fines for use as a growth medium, though it is not clear if they will be suitable. Have you contacted the <br />Natural Resources Conservation Service (NAGS) [o sec If soil survey information for this site has becu published? <br />if such exists. or if any analysis for plant nutrients has been coeductcd, please provide the additional information. <br />Short of That, it would be recommended that as fines arc screened out early in the operation, that they be placed and <br />sea{cd to dctcnninc if they will support the proposed vegetation or require additional inputs. The bond amount will <br />he affected by the suitability of dle fines as a growth medium. <br />S. This office has received comrucnts on your operation from the Colorado Division of 1~/ildlife. I am attaching <br />those comments to this letter for your infonnatlou. <br />Exhibit C - Minin¢ Plan (Rule 6.3.3) <br />9. You plan ro initially excavate the chancel of Bridalvcil Creek, mainly to decpcn it for onsite stability and <br />downstream sediment and nmoff control. What is not clear, based partly on the differing alignments and locations <br />shown for the crock chauncl, behvicen the maps m Exhibit A vs. the maps in Exhlbil E, is w•hcthcr }'ou also plan to <br />realign or straighten the prescnt channel. Please clarify. <br />1(l. You describe the existing chauncl on the slope as actually being higher in elevation than its adjacent hillslopcs, <br />thanks to the "levees" of dcbns bordering the chute Your early chmmcl earthwork will decpcn only that portion of <br />the chanucl within the pcnnit area, but not higher on the hillslope. ]t is presumed drat the same natural processes <br />which contributed to the levees and relatively higher channel bed clcvation were also at work on portions of the <br />chanucl up the hill Fram this parcel. Your plan dots not propose to pcrfonn any backfilling to raise the clcvation of <br />your relatively lower adjacent areas, nor provide upslope diversions, nor decpcn the channel all the way up the hill. <br />Therefore, what is to prevent future flows from departing from the prescnt channel location, migrate northward, and <br />el"oSS Ill L' pernlll area CISC4VherC~ This would result in cutting a new channel in the deep alluvium under the <br />constructed benches and debris possibly overtopping the highway. The cross section and topographic map <br />accompanying this plan do not adequately explain how the chamul can be adequately stabilized. Please conuncut. <br />11. You slate that the chvmel will be designed for a stolen even of specific duration anti intensity. I assume that <br />the culvert sizing and basin dcsige will correlate to the specifications also. Drawing MI'-I may include some of <br />this information, but portions of the drawing arc too faint to be legible. Plctsc provide this information so the <br />p:uameters being used and the sin specifications for the runoff and seduncn[ stntc[ures eau be made pall of the file. <br />12. The three benches being proposed, separated by three highwalls, arc intended for industrial and commercial <br />post-mining I:md usq not simply as a means to break up a long slope or tall highwall. It follows that the srtbilih~ of <br />the highwall is important to preserve the integrity of the bench and its firture industrial/commercial contents. It is <br />adequate at [his time to consider a I.S: I slope, but it does not include considerations of water. This question is <br />raised to examine the effects of moishlro in the form of precipitation falling directly on the benches, crossing or <br />conceu[ra[ing on the benches from areas upslope, and/or impounding, The benches, slopes and highwalls will <br />account lot about hnlfaf the permitted area The benches are described as Icvel, with no sumps, s{oping or <br />bcnning, and the bottom bench is depressed below all surrounding land except for the head of the road. Stormwatcr <br />nm-on and runoff will have to be controlled. Since you plan to convey runoff through a reworked chnnncl to areas <br />