61.   The oil industry itself has benefited from huge tax breaks in many forms over the years, despite its long opposition to tougher air quality standards.

62.   The novel approach to helping businesses meet air quality standards at the lowest cost is the brainchild of economists from the California Institute of Technology in Pasadena.

63.   The ozone level is measured to determine attainment of federal air quality standards.

64.   The proposals resulted from a provision in the Clean Air Act requiring that air quality standards be reviewed every five years, with use of the latest scientific evidence.

65.   The Puget Sound Pollution Control Agency is warning that the Emerald City will likely violate the EPA new clean air standards this year or next.

66.   The number of counties across the country that fail to meet federal air quality standards has dropped like a rock.

67.   The rationale behind such proposals, she said, is that such cars could violate EPA air emission standards.

68.   The senator was pressing for a utility deregulation bill that would, she said, have a devastating impact on the same clean air standards he defended last year.

69.   The recently proposed Environmental Protection Agency air quality standards could mean higher production costs and lower profits for Midwestern farmers and ranchers.

70.   The study recommended that the FAA demonstrate the adequacy of its air standards and monitor compliance more closely.