REV97096 - Laserfiche WebLink

Home Browse Search

TR-22 PAR COMMENTS Amended Figure 2.2-7B, which presents the reclaimed waste rock haul road plan view, is not signed by the P.E. Please provide an amended version with signature. 2. The lower road reclamation plan is somewhat confusing, in that there are at least a couple different versions of the plan for reclamation of the road in the waste disposal azea vicinity; the plan depicted on Figure 3.1-10 (which depicts an outdated alignment through the waste disposal area vicinity), and the plan depicted on amended Figure 2.2-7A, (Waste Disposal Post Mining Contours). The plan view of amended Figure 2.2-7B would appear to represent an interim stage of reclamation, after sediment pond removal, but prior to removal of various culverts (which are required to be removed and replaced with dry fords pursuant to reclamation plan narrative). 2.2-7A depicts the 36" CMP just to the east of the sediment pond still in place (at odds with the narrative plan), although CMP-1 and CMP-3 have been eliminated. Some combination of amended maps and amended narrative is warranted to clarify the lower road reclamation plan, particularly regarding which culverts aze to be removed and replaced with dry fords, and which culverts are to be removed but not replaced with dry Fords. Our assumption is that CMP-1 and CMP-3 would be removed and the excavation backfilled to restore the road surface, that CMP-2 would be removed to provide for an open ditch channel, and that all other lower road culverts would be removed and replaced with dry fords as specified in reclamation plan narrative. Our suggestion would be that Figure 2.2-7B should be amended to depict the same interim stage as amended Figure 2.2-6, with sediment pond and all existing culverts still in place, and that a new Figure (2.2-7C?) be submitted to replace the outdated Figure 3. i-i 0. On both interim and iinai reclamation lower road plan view maps, the lower road topsoil stockpile (near the 72" Munger Creek culvert) and associated access should be depicted in reclaimed configuration (since the stockpiled soil is to be used in final reclamation of the portal bench azea). Finally, the specific location that marks the upper end of the lower road, which will be retained for the postmining land use, and the beginning of the upper road, which will be fully reclaimed, should be clearly mazked on the appropriate road reclamation exhibits. Please consider these concerns and recommendations and provide appropriate amendments to clarify the lower road reclamation plan. 3. As requested by DRMS, application sections addressing sediment control for the reclaimed configuration of the portal bench area were provided. The alternative sediment control plan provided for the azea entails use of one silt fence section located to the east of reclaimed Channel "H" and one silt fence located to the west