Agenda Information Sheet
DEPARTMENT: Solid Waste & Recycling Department
CM/ ACM: Mario Canizares
Date: June 12, 2017
SUBJECT
Title
Consider recommendation of an ordinance accepting competitive proposals and awarding a contract for the excavation and construction of landfill cells 3B, C, and D at the City of Denton Landfill, providing for the expenditure of funds therefor; and providing for an effective date (RFP 6395-awarded to Hammett Excavation, in an amount of $3,982,737)
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BACKGROUND
The Solid Waste Department's landfill located at 1527 Mayhill Rd. serves as the sole solid waste disposal site for the City of Denton's residents and businesses. Solid Waste operations are designed to maximize the use of landfill space while controlling environmental hazards and protecting the environment.
Landfill design provides for land and air space to be consumed in a phased approach. The landfill is currently divided into six (6) separate "phases" of land/air space, and each phase is further subdivided into "cells" which are developed and used according to TCEQ and permit specifications. A site map (Exhibit 3) has been provided to illustrate the current phases and cells that are both planned and in use. As waste is disposed in a cell, both land and air space is consumed, and as a result, each cell's useful life is determined by the rate, volume, and density of waste disposed.
The landfill cells currently being utilized allow for the disposal of approximately 2.0 - 2.1 million cubic yards of waste, and staff estimates the cells will contain approximately 1.9 million cubic yards by November 2017, between 90% - 95% full. To prepare, staff has initiated plans to prepare three (3) new cells, approximately 18.8 acres, for use. The associated construction will require the excavation of approximately 550,000 cubic yards of soil to allow for the future disposal of approximately 2.0 - 2.4 million cubic yards of waste. The estimated life of these new cells is between s...
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