2001-05-22_REVISION - M2000158 (3)

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LMVIndNM~NT~ IN O. PAae ~ MwY ao, sea. ataxl:6. A lips has bean added ahowin9 wpeq planning for riprap work will begin. Prior to Platte Sand Z Gravel reacAing this tins a map showing where rivor bank armoring will nand to be done will have been eubroitt0d and approved by the Division. Aleo at that time, the bond will ho evaluated to datermina th0 Coat to Tip-Tap the lake banks that w1.it be wrested in the near future. At no time will mining take p.lacn within 400 feet of the river without liret having armored the hanks on the rivoraide that era subject to oroston and lees that 900 feet from the excavation aroa. This lino is at least 430 feet from tho e].oasnt structure that would 6o aftoctcd by down nutting it the rivor flooded. Note that there are no lake banks next to a etrueturo that could bo aPfectod if Flood water entered the excavation arcs and that mining will not ha within d00 feet of the river. Armoring on pig side Lanka will begin once 500 feat of final shore line hoe boon created in an area needing armoriny. No more that 500 feet of erosion sensitive final pit peri~ue+~er, will l~r_ exposed without armoring, at any one time during the life of tl~e mine. Armoring will be done noncurrent with reclamation ao Ps&G slays within the 500-Loot limitation. the bank eloping will be done prior to armoring, the gradation teat will bo done to see if the in situ miF.ari.al .ia acceptable, and the riprap will be placed. xeeoiling and revegetation will then take place according to the proposed plan. Hining is not expected to roach an aroa where armor.i.nq ~f lakP hanks will be necessary for 10 or morn years. Armoring will ba completed prior to mining within d00 fpo}. of }.ha river whore the armoring ie needed. Ths areas that Woad to 6o armored will be idontiFied on a map that will bs submitted to the Division for review and approval. The operator will continuo to monitor the river banks ao mining progresses and i! additional arcao era idantifiod after tine EiraL map le submitted a revised map will be prepared and submitted for Division review. On a conservative aide mining ie not expected eo reach the river area within tl~e Flr•nC to yeas•e oP the mines life. roe eaeimeead cove Revier of the Division coot aetimate and methodology is acespt- able to the applicant. While they believe they can do ie at a lower coat, it is understood that the coal for the Division to do the job ie greater than the applicant's coat. The applicant i,e rhnnsinq to use concrete rubble but that material may not be available to the Divi- sion. Thus, using quarry rook ie the only alternative when calculat- god Hdsi:~ teoz zz•FEw 66rL C2h COC '^hl ~P[1Hd '7P11 '1~13HPUa[~Pi3 : ~~~^~d