" excavating for trenches;
« welding and installing the compressed air pipe and condensate main in the trench
where shown on the Drawings;
" backfilling the trench;
" connecting to the existing air supply at existing manhole MH-5 and trenching and
backfilling the air line outside the landfill footprint;
« installing cleanouts for the condensate main;
«installing the air line isolation valve;
"connecting the condensate main to the existing leachate collection system cleanout
(includes trap and bentonite seal);
" relocating excess waste to the active face of the landfill; and
"controlling odors.
Materials include HDPE pipe, fittings, valves, and bentonite for seals related to the air and
condensate main pipe where shown on the Drawings. CONTRACTOR shall 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 per
unit basis as indicated on the bid form.
Bid Item No. 4 Road Crossing Culvert
This item requires that CONTRACTOR provide all labor, materials, and equipment to
construct the road crossing pipe sleeve culvert indicated in the Drawings and
Specifications. The labor includes excavating and trenching for the proposed culvert,
segregating roadway materials for reuse if possible, installing the CMP pipe sleeve,
installing the 2-inch diameter SDR-9 HDPE compressed air pipe and the 3-inch diameter
SDR-11 HDPE condensate main through the sleeve, backfilling and compacting with
Common Fill, and replacing and compacting the existing roadway materials to restore the
roadway section. This item will be paid on a lump sum basis for each crossing. The cost of
the compressed air pipe and condensate main shall be considered part of Bid Item No. 3.
Bid Item No.5 Furnish and Install 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
collection trenches and Draintube™ surface collectors 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 unit basis for each
wellhead assembly installed.
Bid Item No. 6 Furnish and Install Landfill Gas Conveyance Pipe
This item requires that CONTRACTOR provide all labor, materials, and equipment to
furnish and install solid HDPE LFG conveyance pipe, including fittings, as indicated on the
Drawings and the Specifications. Labor shall include trenching and excavating waste and
relocating excess waste to the active face of the landfill as designated by OWNER,
File No. 3066.07 2 of 4 October 2016
