Concerning livestock methane emissions.

HB 1630 requires dairy farms and certified feed lots in Washington State to annually report their methane emissions starting January 1st following rule adoption. It directly affects licensed dairies (under chapter 15.36 RCW) and certified feed lots by mandating they submit annual reports detailing total methane emissions from the previous year. The bill allows initial reports to use a three-month average for estimation and directs the department to establish reporting rules and schedules. This legislation aims to fill a data gap in understanding livestock methane contributions to greenhouse gas emissions, without setting emission limits or requiring reductions.