2022 - Landfill Cell 6 - Chaffee GEOSYNTHETIC LINERS INSTALL PHASE 2 CELL 6 DISPOSAL CELL CONSTRUCTION

The Contractor shall be responsible for the 2022 Phase 2 Expansion construction work consisting of and limited to: 1) installation of geosynthetic clay liner (GCL), installation of dual-side-textured 60-mil HDPE geomembrane, and termination of the GCL and geomembrane in anchor trenches to be excavated and backfilled by others. The Contractor shall be responsible for the Bid Alternates (A and B), which include options for both supply and installation of all geosynthetic materials (A Option), as well as an install-only (B Option). In addition, an alternative bid item (C Option) is included that consists of installation and/or supply and installation of a geocomposite drainage layer as an alternative to the current design which includes a 0.5-ft. sand drainage blanket to be placed over the geomembrane liner on the bottom sections of the cell.

Excavation and soil fill of the Cell 6 expansion to required subgrades, as well as all earthworks, will be performed by others. Unloading and initial staging of GCL and HDPE will be performed by Owner. The Geosynthetics Contractor shall manage and handle the rolls of GCL and HDPE material during the geosynthetics installation process, including staging near the construction area, if needed, and transport into the Invitation to Bid-Cell 6 Chaffee County Landfill Page 2 of 4 placement area and place the materials, so that no rolls are damaged due to weather or environmental conditions.

Geosynthetics Contractor is to cause to manufacture and purchase the materials meeting project requirements following approval of the materials by AEC, ensure all manufacturers testing is conducted in accordance with the plans and forwarded to AEC for review, transport the materials to the landfill following review of test data and approval to ship by AEC.

The GCL and HDPE liners will be installed concurrently so that no GCL is left exposed overnight.

Provide other services as described and requested, including placement and field testing required by the approved CQA Plan included with this RFP. All work shall be done in accordance with this Request for Proposal, the project construction drawings and specifications, description of pay items, and the approved CQA Plan that will be provided as part of the project bid package document set.