controlling odors, welding and installing the pipe in the trench, backfilling the trench with
excavated materials, and connecting pipe to existing conveyance pipe and to wellheads as
defined in the Drawings and Specifications. CONTRACTOR shall also furnish and install any
and all fittings (connections, wyes, tees, and elbows) required to complete the work; not all
fittings needed are shown on the Drawings. This item will be paid on a unit basis per linear
foot of LFG conveyance pipe installed.
Bid Item No. 7 Perforated Pipe Collection Trenches
This item requires that CONTRACTOR provide all labor, materials, and equipment to
construct the perforated pipe collection trenches along the alignments indicated on the
Drawings. Labor shall include excavating and relocating excess waste to the active face of
the landfill, odor control, and installing pipe and materials as defined in the Drawings and
Specifications. Materials shall include 4-inch diameter perforated HDPE pipe, 6-inch
diameter perforated HDPE pipe sleeve, Crushed Stone, and nonwoven geotextile as defined
in the Drawings and Specifications. CONTRACTOR shall furnish and install any and all
fittings required to complete the Work; not all fittings needed are shown on the Drawings.
This item will be paid on a unit basis per linear foot of trench constructed.
Bid Item No.8 Draintube™ Surface Collection Layer
This item requires that CONTRACTOR provide all labor, materials, and equipment to install
the Draintube™ surface collection layers along the alignments indicated on the Drawings.
Labor shall include rolling out the Draintube™ over existing grades, carefully cutting the
Draintube™ to allow for riser pipe penetrations, connecting the 1-inch diameter
Draintube™ pipes to the 4-inch diameter solid HDPE vacuum pipe at each end of the
collector, constructing the anchor trench along the perimeter of the Draintube™, installing
the associated condensate drain pits, repairing penetrations of the Draintube™ with excess
material and duct tape, 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, associated fittings and couplers, duct tape for repairs, and
Crushed Stone for condensate drain pits. 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.9 Bentonite Seals for Existing Vertical LFG Wells
This item requires that CONTRACTOR provide all labor, materials, and equipment to install
the bentonite seals around existing vertical LFG wells where shown on drawings. Labor
shall include careful excavation around each well, installation of the bentonite seal as
depicted on the Drawings, and placement of a 1-foot thick layer of Intermediate Cover over
the seal. CONTRACTOR shall hydrate and mix bentonite prior to placement. This item will
be paid on a per unit basis for each bentonite seal installed at an existing vertical LFG well.
File No. 3066.07 3 of 4 October 2016
