91.   Car makers worry that unless air quality improves they will be ordered to meet yet stricter design standards.

92.   Checking with the governors of both Missouri and Kansas and other local officials for impact on KC air quality and highway funding.

93.   China is in the midst of what some experts call an environmental crisis, with major water sources and air quality being degraded at alarming rates.

94.   Compared to two decades ago, when industry operated with fewer restrictions, air quality has generally improved in Texas.

95.   Colorado opposed controlled burns last year because of air quality and safety concerns, said Sean Duffy, a spokesman for Gov. Owens.

96.   David Leith, an expert on aerosol physics and air quality at the University of North Carolina at Chapel Hill, agreed that such a dispersal was possible.

97.   County officials said that air quality in Orange County has improved in the last few years, citing the results of tests from a monitoring station in West Point.

98.   Despite concerns from other groups about traffic congestion, air quality and waste removal, the first phase of the project was approved last September.

99.   Despite the heat, smog levels for the Valley on Tuesday were not unhealthy, state air quality officials said.