Bushe River Solid Waste Transfer Station

Work of this Contract comprises of the following: Conduct earthworks including topsoil stripping, site grading and compaction to establish finished grades for all functional areas as shown on the drawings. All earthworks shall be carried out in conformance with the geotechnical recommendations. The site has been cleared and grubbed under a previous contract. Clearing and grubbing does not form part of the Work of this Contract. Excavate, haul, place and compact clay fill from the on-site borrow area, and strip, haul and stockpile topsoil and unsuitable material at the locations shown on the drawings. Construct the elevated platform and ramp as shown on the drawings. The retaining structure is a mechanically stabilized earth (MSE) wall using precast concrete lock-block facing units with geogrid reinforcement, and includes: Uniaxial geogrid placed at each course interface, and reinforced granular fill placed and compacted in accordance with the drawings and Section 31 05 16 Aggregate Materials. A compacted clay ramp core beyond the reinforced zone, placed using material from the on-site borrow area. A clean drain-rock chimney drain and a perforated base drain discharging to a positive daylight outlet through the wall face. Galvanized steel fall-protection railing and precast concrete curb stops at the platform. Ramp geometry shall accommodate four 40-cubic-yard roll-off bins and a vehicle travel lane. Bin stop and clearance dimensions shall be verified against the Owner's existing roll-off truck dimensions prior to construction. Construct the concrete slabs-on-grade for the roll-off bins. Supply, deliver, place, and tie in the household hazardous waste (HHW) drop-off unit, in accordance with Section 00 74 00 Special Provisions. Design, purchase and delivery of the HHW drop-off unit are covered by a cash allowance under Section 01 21 00 Allowances. All other costs, including Contractor coordination, expediting, off-loading, placement, installation and tie-in, shall be