Gov. Brown signs new state law curbing methane from dairy cows, landfills

Monday, September 19, 2016

Methane emissions from cow manure came under state regulation for the first time Monday as Gov. Jerry Brown signed the state’s latest effort to combat climate change by targeting so-called “super pollutants” that contribute to global warming.

The legislation requires reductions of three pollutants — methane from manure and landfills; soot, known as black carbon; and hydrofluorocarbon gases used in refrigeration, air conditioning and aerosol products — from 2013 levels by 2030.