Texas Natural Resource Conservation Commission

http://www.tnrcc.state.tx.us/permitting/wasteperm/mswperm/gas_air.html

 

New York State Department of Environmental Conservation

http://www.dec.state.ny.us/website/dshm/sldwaste/lfgas.htm

 

California Energy Commission

http://www.energy.ca.gov/development/biomass/landfill_gas.html

 

Tennessee Department of Environment and Conservation

http://www.state.tn.us/environment/swm/methane.htm