The controversy is the latest of several dust-ups involving the Doyle administration and air quality.
Last year, Doyle was criticized by environmental groups for asking the EPA to declare all Wisconsin counties in compliance with ozone pollution standards, even though subsequent tougher federal standards put several counties in violation.
Also, the Department of Administration and UW-Madison hastened efforts to clean up the Charter Street Power plant in Madison and other state-owned power plants after a successful lawsuit by the Sierra Club.