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Sep 23 98 03:34p Cyprus Amax User 19701 870-2753 p•4 <br />locations. Drilling of sins PDS 006 through PDS 009 will require additional time due to the depth <br />of the holes <br />Road Construction: Existing roads and trails will be used whenever possible to minimize the <br />amount of road construction undcrtakat within the drilling area. Significant alterations of existing <br />roads are not anticipate. TCC does not intrnd to develop access roads beyond general leveling <br />and smoothing of the ground to facilitate access by drilling equipment. Surface disturbance will be <br />kept to a minimum with access to prot,nse~l sites ]in,ited to dry periods to the etent possible. New <br />roads will be constructed only as necessary in order to protect and preserve [he existing topsoil <br />resources and minimize erosion. In the event additional roadwork is required to maintain adequate <br />access to drilling sites, the available topsoil (typically 24" deep) will be windrowed to the srde of <br />the road in a stable configuration and stockpiled for use during final reclamation of the road. <br />Mobile equipment, typically a small bulldozer, will be utilized for routine road maintenance and <br />any necessary construction activtRes. Bonding estimates for this project have been addressed, see <br />tables 2, 3 and 4, assuming additional road construction as indicated on the enclosed map is <br />required. Some minor road construction may be necessary for sites PDS001, PDS002, PDSUU3, <br />and PDS 006 if weather conditions dictate. Access to the remaining sites is provided by existing <br />ro.•tds, which may require routine maintenance or minor rehabilitation activities but which are not <br />anticiparrd to.regtrire significant alteration. 1998 NOI Table 2 details potanial disturbartcc arras <br />and topsoil volumes associated with the additional road construction potentially associated with <br />this project. <br />A temporary crossing of Middle Creek will be required for approximately 9 tvrxks for this <br />investigation. The crossing will be provided by placing a 36 inch CMP in the channel to pass the <br />1-year, 6-hour stomt event. The design for this culvert is presented in Exhibit 1 of this application. <br />Fill material for placement over the; culvert will be obtained front the azca immediately adjacent to <br />the crossing. Prior to Dlacement of this fill material the topsoil ,will be windrowed to the side of <br />borrow arca. It should be noted that the borrow area and the road will be in the same location. <br />Immediately after the crossing is no longer needed for the drilling progmm the fill and culvert will <br />be removed from the channel. The replaced fill n,atcr ial will be graded to blend in with the existing <br />topography and channel gcomdry. Thc windrowed topsoil will be reapplied over the graded areas <br />and seeded with the approved seed mixture. <br />Drill Site Construction: Topsoil will be removed as necessary and stockpiled to avoid <br />contamination adjacent to each drill site developed. Given the anticipated short duration lxttween <br />topsoil salvage and replacement at each site, no interim seeding is amicipated. Constructed drill <br />pads for sites PDS001 through PDS003, and PDS 006 through PDS 009 will be approximately <br />100' x 100' in size ,with associat:d total disturbance areas of approximately 0.3 acres at each site. <br />1998 NOi Table 2 details topsoil depths and yardagcs to be salvaged at each sits for drill pad <br />construction. After topsoil has bcrn removed, the pad areas will be leveled with a small dozer to <br />accorn„todatc tlic drill rig and associated equipment. The proposed exploration sites are typically <br />located on gently sloping areas, with slopes ranging front flat to approximately 10 % and averaging <br />approximately 7 %; the associated leveling work required at each site will be minimal. Mud pits <br />will be excavated within the pad areas following topsoil salvage and leveling work. Material <br />excavated from the mud pits will be segregated from the topsoil and retained within the boundary <br />of the drill pad. Sediment control will be achieved by rcraining runoff .within the drill pad arcs to <br />the ~7ent possible. In the event persistent runoff occurs from the disturbed area, silt fences or <br />other temporary sediment control measures may he employed to reduce off-site sediment transport. <br />6`)!23l9R 2 orb <br />