Laserfiche WebLink
Construction: <br /> Construction of the portal is mainly below the final reclamation level, so that we can return the area in a <br /> better state than we found it. Portal construction BELOW the reclamation line will use 8 foot long, <br /> treated 8"x 8"timbers, #5 steel rebar and some concrete to create a safe and stable foundation around <br /> the 8 foot wide, 12 foot long pre-existing vertical shaft. The DRMS does not need to account for this <br /> mat-er-m-A as it will be-subsurface. <br /> Construction of a structure to connect the subsurface portal to the CURRENT surface level will use 8 foot <br /> long,treated 8"x 8"timbers and#5 steel rebar. This will allow for a 4 foot wide, 8 foot long ladder <br /> compartment with a steel door grate and an 8 foot x 8 foot haulage compartment to be connected to <br /> the surface. This structure will take one person approximately 8 hours to dismantle and 1 pickup truck <br /> load of material to remove from the site for reclamation cost estimates. Safety and visual impact of this <br /> structure will be considered during the construction of this portal and structure to connect to the <br /> current surface. <br /> Operations in this phase will be minimal as the emphasis is on converting the existing surface operation <br /> to an underground operation. Any new material removed during the construction will be stored and <br /> moved to one of 2 distinct piles located 25 feet east of the new portal. One pile will consist of medium <br /> to large rocks and the other NEW pile will be smaller rocks and dirt piled on a tarp for reclamation. <br /> Reclamation during this phase: <br /> Continued monitoring of the Topsoil Storage Pile <br /> Reclaiming all area possible to the NEW entrance portal to improve visual impact and safety. This <br /> includes backfilling and grading. Measures will be taken to reduce the area of disturbance to just <br /> around the new portal. Some topsoil may be moved and reseeded into areas that will see no further <br /> impact from mining operations. <br /> Ridgetop Project Area Usage: 0.12 acres, which break down to... <br /> Area of Disturbance=0.053 <br /> Support Area=0.005 <br /> Dirt/Rock Storage=0.038 <br /> Trail j Travel =0.014 <br /> Q,vlc&c Safety Fence=0.01 <br />