end of the collector, and hauling and placing a 1-foot thick layer of Intermediate Cover over
the Draintube™ following installation. Materials shall include the Draintube™ models
indicated on the Drawings, and associated fittings and couplers. Intermediate Cover is
available on site for use by CONTRACTOR. This item will be paid on a unit basis per linear
foot of Draintube™ installed.
Bid Item No. 6 40-mil thick HDPE Geomembrane
This item requires that CONTRACTOR provide all labor, materials, and equipment to
furnish and install 40-mil thick HDPE geomembrane along the existing concrete block wall
where shown on the Drawings. Labor shall include preparing the ground surface for
geomembrane deployment, rolling out the geomembrane over the smoothed surface,
installing anchor trenches along the three edges of the geomembrane not adjacent to the
concrete block wall, and extrusion welding the remaining edge of the geomembrane along
the existing concrete block wall as shown on the Drawings. CONTRACTOR shall also install
extrusion welded pipe boots for new and existing well pipe risers within the area of
geomembrane deployment. Any seams in geomembrane shall also be extrusion welded.
This item will be paid ona per unit area basis as indicated on the Bid Form.
Bid Item No. 7 Wellhead Assemblies
This item requires that CONTRACTOR provide all labor, materials, and equipment to
furnish and install wellhead assemblies, including elastomeric adapters, for the LFG
extraction wells, LFG collection trenches, and Draintube™ surface collectors where shown
on the Drawings. Wellhead assembly shall be QED Precision Quick-Change™ Orifice Plate
Wellhead (or equivalent approved by the ENGINEER) and must be compatible with the
CES/LANDTEC GEM-2000™ and GEM-5000™ landfill gas monitors. This item will be paid
on a per unit basis for each wellhead assembly installed.
Bid Item No. 8 Air Line Isolation Valves
This item requires that CONTRACTOR provide all labor, materials, and equipment to
furnish and install isolation valves for the compressed air pipes where shown on the
Drawings. This Work includes installation of the transition fittings, ball valve, stem
extension, bentonite, and polyethylene wrap. Excavation and backfilling is included under
Bid Item No.4. Payment for this item will be on a per unit basis for each valve installed.
Bid Item No.9 Condensate Traps
This item requires that CONTRACTOR provide all labor, materials, and equipment to
furnish and install the condensate traps where shown on the Drawings. This Work
includes excavation and installation of the condensate traps, hauling of waste excavated to
the active area, welding of HDPE pipe for the trap, and backfilling of the excavation as
shown on the Drawings. Materials shall include all pipe, fittings, and stone aggregate
required for a complete installation. Payment for this item will be on a per unit basis for
each condensate trap installed.
File No. 3066.21 3 of 4 January 2021
