Specifications include, but are not limited to: In total, the construction limits will consist of approximately three and a half (3.5) acres. One (1) acre within the slide, one (1) acre within the waste area, one (1) acre within the access road and ditch area and a half (0.5) an acre, which will incorporate disturbed areas around the house, garage and driveway. All other seeding will utilize the AML General Reclamation Mixture found in the Standard Specifications on page A-6. Revegetation activities shall be completed within the recommended seeding window found on page A-5. Any seeding activities outside of this window must be approved by the Branch Manager. Site preparation will be utilized on three (3) acres, which will include one (1) acres of slide and two (2) acres of waste area, access road and ditch excavation area. The area around the home will not require any site prep. Excavator hours can be used to explore the slope and transition area to determine rock depth prior to slide excavation. The project includes one (1) waste area approximately one (1) acre in size and located along an existing mine bench, above the home. An existing dirt road runs parallel to the base of the highwall. Some trees have grown within the road and may need to be removed, but most are small in diameter. Trees and brush will be windrowed off to the side. A subdrain will be installed at the base of the highwall to alleviate existing drainage issues and daylight into an adjacent natural drain where a 4' F.B. Class III ditch will be installed. Excavated material will be placed against the highwall and graded at a 2:1 slope. The existing access road will be left in place for the landowner but may need to be moved accordingly, after waste material is backfilled. An ECB diversion ditch will be installed at the top of the transition zone and along the disturbed access road. It will daylight into the installed Class III ditch at whatever elevation is determined by the onsite Engineer during construction. Location may vary depending on final grade. Silt bales will be installed at multiple locations within the work limits. Silt fence will be installed between the strip-to-rock area and the mobile home. A temporary type B silt trap will be installed at the furthermost end of the installed Class III ditch to capture sediment during construction. Upon project completion, the silt trap will be removed and used to armor the ditch outlet. Mobilization is setup to provide for construction equipment to be delivered to the site. Slide abatement includes stripping the existing unstable slope to rock. A 30' transition zone will be included around the perimeter of the slide area to blend the stripped area and vegetated area together to minimize future erosion. Side slopes will have a 3:1 maximum slope and will be covered with ECB after revegetation is complete. Silt fence at base of the strip to rock area shall be left in place until vegetation germinates to prevent sediment from filling up concrete blocktied mat ditch below. No geotechnical drilling was performed for this site, so rock depths are unknown for soil and rock depths within the slide area. Earthwork work bid item is included to strip slide down to rock and transport material upslope to the designated waste area. It also includes all ditch excavation and hauling of ditch material to the designated waste area. Earthwork bid item is also for grading the access road leading up to the bench, as well as the road located on the bench that will be re-installed after reclamation is complete. Armored HDPE Pipes are included to properly carry accumulated bench drainage, subsurface drainage and surface runoff to the natural drain, which will enhance long-term erosion control and stability of the site. Hoe ram bid item is included to address/reduce the size any boulders too large to move with an excavator during the installation of subdrains, pipes and ditches. Unstable rocks encountered within the slide area will al
