Laserfiche WebLink
New Access Road Construction Work Plan <br />Exhibit D — Attachment 1 <br />Clearing <br />Wildcat Mining Corporation <br />May Day Idaho Mine Complex — 112d Permit Application <br />Revised August, 2011 <br />Exhibit D — Attachment 1 <br />• Crushed rock will be temporarily stored and used for road base; <br />• Grade cut slope to specification (Road surface will be placed on the bedrock cut (14- <br />feet wide); <br />• To stabilize the previously constructed out slope, material from the top of the fill to <br />an area approximately 20 feet (Attachment A - Sheet C3.10) from the base of the fill <br />will be sequentially removed in 10 foot or less benches to form the final slope grade. <br />The material will be removed using a combination of an excavator and front end <br />loader; <br />• The fill slope located from the toe of the fill to an area approximately 20 feet from the <br />edge of the existing wetland will be prepared to place erosion logs (See BMPs <br />Attachment D -11) parallel to toe of the fill; <br />• Extreme care will be used to prevent rock from rolling into the adjacent wetlands; <br />• Rock fill removed from the out slope will be stockpiled in designed storage areas for <br />road base use; <br />• Rock from the fill will be crushed as necessary and used for road base; <br />• After BMPs are constructed, at Station 22 +10 the road fill including the 24 inch <br />culvert will be removed; <br />• Fill material will be temporarily stored in designated areas and the culvert will be <br />scrapped and disposed of offsite in an approved landfill; <br />• The culvert including inlet and outlet controls (catch basin, debris basin, riprap, etc.) <br />will be installed in accordance with design specifications (Sheet C4.12); <br />• Stockpiled material will be used to back fill the culvert and to bring the road to grade; <br />• Road fill material will be compacted per ASTM standards (D- 1557 -02); <br />• Buttresses will be constructed per design and specification; <br />• Construction will be under the supervision of a registered professional engineer; <br />• Road construction from the Station 16 +00 to 18.80 will be cleared, graded, backfilled, <br />and road base applied to design specifications using material generated from the <br />terrace and from the rock fill adjacent to the wetlands; <br />• Guard rails will be installed per design criteria (Attachment A - Sheet C2.00); and, <br />• Road cuts, fill, disturbed areas, and erosion control structures will be revegetated <br />using approved BMPs and seed mixes. <br />• Remove loose trees, branches and bushes from road fills at 20 +40 to 20 +60 <br />(Attachment A - Sheet C3.10); <br />• Remove trees within road right of way (Sta. 22:00 to 24:00); <br />• Slash, debris, trees will be stored in a future designated area for disposal or removal <br />to a landfill; <br />Page 7 of 15 <br />