Landfill Methane Control Measure

This page last reviewed April 21, 2016

wellhead Background:  

The Air Resources Board (ARB) approved a new regulation that reduces emissions of methane, a greenhouse gas, from municipal solid waste (MSW) landfills.  The regulation, which became effective June 17, 2010, is a discrete early action greenhouse gas emission reduction measure, as described in the California Global Warming Solutions Act (“AB 32”).  The regulation primarily requires owners and operators of certain uncontrolled MSW landfills to install gas collection and control systems, and requires existing and newly installed gas and control systems to operate in an optimal manner.  The regulation allows local air districts to voluntarily enter into a memorandum of understanding (MOU) with ARB to implement and enforce the regulation and to assess fees to cover costs.  This webpage follows the development, implementation and enforcement of the control measure

  • Landfill Methane Control Measure Regulatory Activities 
  • Landfill Gas Tool
    • ARB staff has developed a Landfill Gas Tool to assist owners and operators in complying with the landfill regulation.  The tool is based on the mathematically exact first-order decay model from the 2006 IPCC guidelines and is designed to estimate the fugitive emissions from a landfill that does not have a landfill gas collection system.  It uses the Second Assessment Report (SAR) Global Warming Potential (GWP) of 21 for methane.  It also includes an estimate of the landfill’s captured gas heating value (in MMBtu/hr).  If you have comments or questions about this tool please contact Larry Hunsaker, Staff Air Pollution Specialist.
      Landfill Emissions Tool Version 1.3 [Excel-523 KB]