OSM proposed to approve an amendment to Pennsylvania's regulatory program under SMCRA concerning limitations for post-mining discharges.

OSM proposed to approve an amendment to Pennsylvania's regulatory program under SMCRA that would remove a required amendment on regulatory exemptions for coal extraction incidental to the extraction of other minerals.

OSM approved an amendment to Montana's regulatory program under SMCRA concerning letters of credit issued by banks.

OSM approved an amendment to Louisiana's regulatory program and abandoned mine land reclamation plan under SMCRA covering a wide range of provisions.

OSM approved an amendment to Kentucky's regulatory program under SMCRA pertaining to the disposal of coal mine waste.

The Agricultural Marketing Service proposed revisions to the Federal Seed Act to update regulations and to prevent potential conflicts with states.

EPA determined that hydrofluoroolefin-1234yf is an acceptable substitute for chlorofluorocarbon-12, an ozone-depleting substance, in motor vehicle air conditioning for new passenger cars and light-duty trucks.

EPA finalized amendments to the NESHAPs for existing stationary spark ignition reciprocating internal combustion engines.