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Revisions -Exhibit C-2A Construction of Main Access Road -Please revise Exhibit C-2A to include <br />the following: <br />engineering designs & details for the culvert instaliation/dminage crossing at the lower end of <br />main access road (culvert siu 8c flow capacity, % grade, #ft of compacted fill above, outlet <br />controls, etc.) <br />engineering designs & details for conveyance of road drainage to Sediment Pond A <br />acceptable grade control methods for road drainage (straw bales are not acceptable) <br />Revisions -Exhibit C-2C Mining Plan Map -Please revise Exhibit C-2C to include the following: <br />engineering designs & plans, including slope configuration(s), for each runoff diversion channel <br />engineering designs 8c plans, including spillway configuration/method, for each sediment pond <br />width, depth, & slope(s) characterization of natura] drainages to be reproduced via diversion <br />channels (recommended-nat required) <br />Revisions -Critical Cross Sections 10-Year Plan -Please revise the Critical Cross Sections 10-Year <br />Plan Map to include details for cross sections A-A', B-B', C-C', D-D', & E-E'. <br />RevLsions -Critical Cross Sections Processing/Plant Area -Please revise the Critical Cross Sections <br />ProcessinglPlant Area Map to include the following: <br />details for cross sections A-A', B-B', C-C', D-D' <br />clarify the location and orientation of the processing plant area typical cross section <br />orientation for eonstmction of the waste rock pile, ie: downstream to upstream, other? <br />plans & designs for the internal haul mad to the temporary waste rock storage area, is this <br />a temporary road to be reclaimed during final reclamation? <br />6.4.4 EXHIBIT D - Min[ne Plan <br />Mardmam Disturbance -The applicant has specified that the mine plan encompasses only 27.71 of the <br />entire 526.70 acres to be pemritted. The mine plan also specifies the following disturbances: a) main <br />access mad, b) processing/loadout site, c) waste rock storage pile, d) quarry extraction area, and e) <br />" " incidenlaTdisfw'barices.-"In confonnnance with-R61bs 6.~:4(dparifi6:4.~eJ(h7, please clarfy the maximum <br />disturbance to be expected at any one time throughout the life of the operation. Please be swe to describe <br />the tnaximum quarry distwbance in terms of the vertical and horizontal extent of un-reclaimed highwalls <br />and their configuration as well as the volume of shot rock at the foot of highwalls and the "footprint" of the <br />entire quarry distwbance. Please respond. <br />Overburden -The applicant specifies on page S that excess cut material from main access road <br />construction will be placed in a temporary waste rock storage azea, and on page 9 that up to 90,000 cubic <br />yards of unusable overburden maybe generated during construction of the 4 acre processing/Ioadout site. <br />Tn conformance with Rule 6.4.4(f), please clarify the maximum volume and location of un-reclaimed <br />overburden or waste rock to be expected at any one tune thmughout the life of the operation. This estimate <br />should address the estimated volume of waste mck or overbwden from the main access road construction <br />and/or from quarrying operations at the tce of the quany highwalls. Please respond. <br />Process Flles - In conformance with Rule 6.4.4(fj, please verify the maximum expected volume of process <br />fines to be generated and stockpiled on site at any time throughout the life of the operation. Please <br />