Title
Consider approving Resolution No. 2020-127 authorizing the City Manager to execute a contract with Tri Con Works, LLC for the Phase F expansion of the landfill gas collection system at Camelot Landfill, and take appropriate action.
Body
BACKGROUND:
The City of Farmers Branch owns the Camelot Landfill which is a Type I municipal solid waste landfill. The municipal solid waste permit was amended in August 28, 2017 which significantly increased the disposal capacity of the facility. The City and its contractor commenced construction of the new airspace on May 7, 2018.
As organic material in garbage is disposed at the Camelot Landfill is decomposed by microorganisms, gasses are emitted. The two main gasses produced during decomposition are the odorless gasses carbon dioxide and methane (98-99%). The other 1-2% of the landfill gases are 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, which is a series of pipes and wells connect to a blower or compressor, which sends the gas to a flare or engine(s) where the methane is burned or combusted as fuel to run the engine that are used in the production of electricity.
As a result of the increased disposal capacity, the facility is now subjected 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 into any area of the landfill that has waste that was buried over 5 years ago.
The northwest portion of the waste disposal area contains waste disposed 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 landfill. This area of the landfill is the site of the active disposal area. Nevertheless, due to the age of the waste in place at the bottom of two of the cells in this portion of t...
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