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EXHIBIT D: RECLAMATION PLAN <br />(a) Overburden: The Yule Quarry is and underground operation. The seam of marble <br />is 300 feet thick and is entirely exposed at the surface. No overburden removal or backtilling of <br />the underground excavations is anticipated. It is anticipated that the north and middle quarry <br />entries will be left open and unchanged from their current condition. The south quarry entry will <br />also remain open, but a new portal has been opened on the south wall of this entry. The quarry <br />portal driven by CYMC in 1990 and any new quarry entries will be backtilled to prevent public <br />access to underground workings. <br />(b) Waste Pile Slopes: The et~ective <br />overall slope of the final surface of the waste <br />piles is 1.6:1 to 2:1 (horizontaL• vertical). This <br />slope is consistent with the slopes of the <br />existing waste piles that have proven to be <br />stable for the 49 years between 1941 and 1990 <br />when the quarry was inactive. It is Sierra's <br />position that a geotechnical study of the waste <br />pile slopes is not necessary. Such a study <br />would rely almost solely on the history of the <br />existing waste piles. Based on this history, <br />very reliable date is available upon which to <br />base planned final waste pile slopes. The <br />slopes are consistent with the existing natural <br />topography and will blend well in the mountain <br />terrain. The photo at right, taken in 1988, <br />shows the upper waste pile left from pre-1941 <br />operations. Sierra will continually monitor <br />existing and new waste pile slopes. If <br />significant unstable conditions develop, <br />corrective stabilization actions will be taken, <br />either by reducing the slopes or through <br />mechanical stabilization methods. As outlined <br />in the Mining Plan section above, Sierra plans <br />to deposit new waste to the piles so the final. <br />slope in these new areas does not exceed l .8:1. <br />(c) Reve~etation: Because the original vegetation in the western portions of the affected <br />area is sparse to nonexistent, and because the Marble Historical Society has requested that the <br />marble waste piles remain exposed, only limited revegetation is anticipated by Sierra. <br />Revegetation will involve placement of topsoil on existing access roads and facilities areas. The <br />total area to be revegetated is estimated at approximately 14,000 square feet or about 1/3 acre. <br />No major additions to the existing roads are planned by Sierra other than to extend access to <br />Permit Numher - ~C <br />Class. pPerrrut _ . ~.~ , <br />Section(ExhihiL -/ ~, ~.~!1_lJ --•-------~ ,, '-----•-•-•-------•----- <br />i Class: ^ Revision --- -- ' ~ 9 <br />TYPeiSeq -- ------- ---------- - <br />Class ^ Report ^ Hydro ^General IIIIII VIII VIII IIII VIII I II I III <br />Doc Type- ---- <br />^Apphrauon (Coal only) ^ Bond ^ Enforcement ^ Inspection <br />