Laserfiche WebLink
c. If the applicant wants to vary channel depths, then these <br />• depths should be clearly outlined on the Mine Facilities Map <br />Ma 12 . <br />Res onset As shown on the Mine Facilities Map (Map 12), the <br />channel follows the contour of the land and, therefore, varies <br />along its length. The analysis performed gives the range of <br />minimum size for different slopes. Peerless has utilized the <br />largest channel size along the entire length of Ditch No. 2 to <br />ensure adequate sizing of the structure. <br />d. How much freeboard will be included in this channel design? <br />Response: The design freeboard for Ditch No. 2 is 1.0 feet. <br />e. The Division suggests that Peerless investigate the <br />possibility of retaining this ditch as a permanent diversion. <br />Once the above comments are addressed, the ditch will be <br />designed in accordance with the regulations for permanent <br />diversions. This will be beneficial both in terms of <br />establishing drainage on the light use road and diverting some <br />of the steep slope flaws away from reclaimed areas to prevent <br />ull in . <br />Response: Peerless may investigate the retention of Ditch No. 2 as <br />a permanent drainage feature after a mining and reclamation plan is <br />granted by the Division. <br />5. The same comments in 3 a and b above apply to Ditch No. 3. ~In <br />addition, what will the actual channel depth be in this channel? <br />Response: Ditch No. 3 has been designed similarly to Ditch No. 1, <br />as previously discussed in responses 3 A and 3 b. <br />• As shown in the adequacy responses of April 15, 1985, the design <br />channel depth is 0.53 feet. <br />-9- <br />