The amount of ozone that’s created by pollution when hit with sunlight used to exceed federal standards several dozen days a year in the 1990s. But in recent years, ozone has exceeded standards by only 11 days a year on average.
Yet, the federal Environmental Protection Agency is expected to announce new, stricter ozone standards — standards Houston could have a tough time meeting.
News 88.7 energy and environment reporter Dave Fehling explains.
MORE: EPA’s New Smog Rules Target Industries In Houston (News 88.7, Sept. 29, 2015)