CFAH

“It would be illegal to use residential fireplaces on nights with poor air quality under a rule being considered by Bay Area air regulators. Over the next three weeks, the Bay Area Air Quality Management District will hold workshops to gauge public opinion on the proposal, which would follow similar bans in Sacramento County, the San Joaquin Valley, and such Bay Area cities as Mill Valley, where people who disobey the city’s wood-burning law are already subject to stiff fines.”
Smog board wants to ban wood fires on bad-air nights in winter [SFGate]