Holiday fires lower air quality in the Valley
Smoke from wood fires and a weather phenomenon called a temperature inversion add up to more air pollution at this time of year. READ MORE
EPA Begins Particulate Matter Review
EPA has begun to develop a new Integrated Science Assessment for the Particulate Matter National Ambient Air Quality Standards (PM NAAQS), the first step in its 5 year review process, according to a Dec. 3 Federal Register notice. READ MORE
NSSGA Testifies Against MSHA’s Civil Penalties Proposal
The National Stone, Sand & Gravel Association (NSSGA) voiced strong opposition to a number of provisions in a proposed rule that calls for increased federal penalties for alleged mine safety violations and limits an operator’s ability to contest such fines. READ MORE