Their target is not science so much as a slew of U.S. EPA regulations meant to clean up the nation's coal - fired power plants and reduce the levels of smog in the air. (scientificamerican.com)
Both ozone and PAN are major components of smog in Los Angeles, [researcher Ilana Pollack] said. (treehugger.com)
If an elected official would request a copy of the Sierra Research SR 2007-04-01 report and all communication about the report from CCEEB, CED, CARB, DCA / BAR, IMRC, Parsons, SGS Testcom, ESP & Sierra Research it might help improve performance of Smog Check.... (environmentalleader.com)