Title
Consider approving Resolution No. 2024-166 authorizing the City Manager to execute a contract with Stearns, Conrad, and Schmidt Consulting Engineers, Inc. dba SCS Field Services for the construction of the Phase G landfill gas collection system expansion at Camelot Landfill in the amount of $1,123,150; and take appropriate action.
Body
REQUESTOR:
Public Works Department
BACKGROUND:
The City owns and is the permit holder for Camelot Landfill, a Type 1 Municipal Solid Waste disposal facility in Lewisville, Texas. As organic material in garbage disposed at the Camelot Landfill is decomposed by microorganisms, gasses are emitted. The two primary gasses produced during decomposition are the odorless gasses Carbon Dioxide and Methane (98-99%). The other 1-2% of the landfill gases are the odor-producing compounds. Although odorless, methane is explosive and must be controlled. The most common control method for landfill gas control is a landfill gas collection system. The landfill gas collection system is a series of pipes and wells connected to a blower or compressor, which sends the gas to a flare where the methane is burned or to engine(s) where the methane is combusted as fuel in electricity production. Landfill gas collection systems are installed at municipal solid waste landfills to collect and combust the landfill gas to minimize the potential for odors and to control a potential source of groundwater pollution.
Due to the increased disposal capacity, Camelot Landfill is subject to additional regulations. The City has 30 months from the submittal of the required non-methane organic compound (NMOC) report to install a landfill gas collection system in any area of the landfill that has waste that was buried over five years ago.
The Northwest portion of the waste disposal area contains waste disposed of over 5 years ago. In 2019, some landfill gas collection wells and piping were installed along the west slope of the northwest portion of the landf...
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