1.   Air quality standards vary from state to state.

2.   Environmental groups say the current air standards are inadequate to protect the health of asthma sufferers and others with lung diseases.

3.   Firstly, ambient air quality standards or goals need to be specified.

4.   One major criticism of the air quality management strategy relates to its use of air quality standards.

5.   A US study has concluded that tiny airborne particles from car exhausts may cause disease and death even at levels that meet air pollution standards.

6.   And his aides have begun to signal that Gore was weighing in behind the scenes for a decision on clean air standards that would satisfy the environmentalists.

7.   And they say new air standards would kill our grills?

8.   As a result, she said, the EPA will propose no later than February strict air standards for reducing dioxin and other emissions from medical waste incinerators.

9.   At the same time, the Senate also approved by voice vote an amendment that would give states up to three years to comply with new clean air standards.

10.   Austin has exceeded acceptable pollution levels three times this year, as measured by revised air quality standards the Environmental Protection Agency issued last month.