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zYls Erica Crosby - " <br />RF Jake Kauffman & Son.Jnc. Wagner/Kauffman Pit#3 Amendment;AM-01 <br />;, <br />December l5 2005 L <br />.Page 3 of 6 <br />requiredrto maigtam road` stability, Existing drainage features -for the Boyd Outlet <br />"Ditch wall remain in place -after reclamation. ' ~ • <br />. -Rule 6.4.6 Exhtbtt g .Reclamation Plan Ma <br />10. The revised Reclamation Plan Map is attached. The reservoir slopes will <br />~oonstructed at 3H•1Vslopes or flatter-from.the"crest of the reservoir to-the_ reservo?r_-` <br />' `bottom. Backfilled areas for ~ <br />reclamation activities. These. areas 5ivi11 be backfill d to <br />y flat prior to mining and <br />-grade and be relatively flat, <br />but sloped slightly to drain consistent with the: adjacent natural to 0 <br />Rule 6.4,7 Exhibit G~-Water Information "~ ~~ P graphy <br />11. Water rights from =potential buyers will be used,to fill.-and operate the reservoirs. <br />Potential-'buyers currently engaged in.discussions with the operator'includemunlcipal ~ , I <br />.water users; but-may also include agricultural water users aYsome fime.in the future.- : ' .1 <br />12• ~ The reservoirs will_be constructed below grade; therefore, ~~off site impacts-from'the ~~ ~=~~ <br />potential 100 year ,flood would not be expected. Reclamation:: will not, ;create. ~: <br />significant above grade obstructions tfiaf could potentially increase.downstteain flood , <br />flow height--and velocity. Even at-the maximum storage capacity of the -reservoirs;' . <br />empty freeboard volume would also provide additional floodplatn storage to dampen : __ <br />• flood flows:.-FolIowmg flooding captured flows-would be i <br />the river for downstream water ri mmediatel re <br />ghts owneis: y tarried to - <br />Ex~erpts fioin the applicable Flood Insurance Rate, Map (FIRM) are attached.. The <br />approximate boundary of the •100- <br />- Existing Conditions. Since the area offlnterest~is_ 1o at di within Zone A,~1 QO-y a,. <br />flood elevations and flood hazard factois have not been determined for fhe site. . <br />Future mining and construction of the reservoir will remain at.least 400 feet froin;the <br />bank-of the-Big Thompson itiver. This setback~is. recommended,b <br />Drainage and Flood Control`'District Y the Urban <br />stability from potential; river floodin (~FCD) to provide mining,'and, reclamation <br />within the UDFCD bound g and erosion. ' Althou <br />azY, the UDECD setback ieco gh ttie site is not located <br />been used by.the Division for mmendations have previously <br />guidance outside of the district boundary, <br />13: The aquifer to be mined is---described- in Exhibit'-E, Reclamation Plan <br />Groundwater -Specific Requirements. <br />_ ,under . <br />The alluvial aquifer parameters discussed in the amendment application were used to <br />evaluate the influence of.mining operations at the Wa ner/Ka <br />` Although the current backfilling of Phase I will eliminate Oman nng #needs,• <br />1.'" T y r '~ s - ~ .. <br />~~ n r <br />