018 - Collier Road Landfill Stormwater Spillway Repairs

Base Bid Description

This project involves the repairs of the benches of two existing hard-armored spillways on the
north side of Collier Road Landfill. The benches will be widened, reno mattresses will be
placed over them, and riprap will be added around the perimeters of the benches. The project
also requires the contractor to fill the voids under the undermined spillway benches with
flowable fill and to make repairs as required per Part 115 rules to the 2’ compacted clay cap,
replacing it with either 2’ of compacted clay or with a geosynthetic clay liner.

Bid Alternate Description

The bid alternate project scope involves the replacement of two existing hard-armored
spillways on the north side of Collier Road Landfill. The existing hard-armored channels will
be replaced with reno mattresses filled with riprap, the benches will be widened, and riprap
will be added around the perimeters of the benches. The project also requires the contractor to
fill the voids under the undermined spillway benches with flowable fill and to make repairs as
required per Part 115 rules to the 2’ compacted clay cap, replacing it with either 2’ of
compacted clay or with a geosynthetic clay liner.