In 2010, the DMASWA began reducing its overall greenhouse gas emissions with the installation of a landfill gas collection and control system. Landfill gas is a waste product generated as waste decomposes in the landfill. It is comprised of methane (natural gas), carbon dioxide, nitrogen, oxygen, and other trace gasses. This system is comprised of over three miles of plastic pipes collecting the gas, a blower motor draws the gas out of the landfill, and a flare destroys most of the landfill gas. This system destroys over 50,000 tons of greenhouse gases (tCO2e) annually. This is the equivalent to recycling an additional 17,422 tons of materials or planting over 58,000 acres of trees annually.
To build on the DMASWA’s efforts to reduce its environmental impacts, the agency seeks to off-set the 30,000 tCO2e released and the 165,500 MMBTUs of wasted heat from the flare annually by cleaning the raw gas and converting it into a marketable renewable natural gas (RNG) product that can be utilized as a vehicle fuel. The potential energy offset is over 1,000,000 gallons of gasoline equivalents or providing the heating needs for over 2,000 homes consumed annually.
The Dubuque Metropolitan Area Solid Waste Agency (DMASWA) has issued a Request for Proposals (RFP) to identify a partner to process and market the landfill gas collected by the agency. Interested developers are invited to submit a proposal in the format outlined in the RFP. The RFP and system performance data can be found at: Tinyurl.com/RNG-RFP or by contacting DMASWA Administrator John Foster at (563) 589-4354 or firstname.lastname@example.org.