1.   As technology improves, thereby making it possible to set a lower emission standard, new sources face increasingly more strict controls.

2.   It is shown to be possible to maintain or improve upon Current emission standards.

3.   It would be useful to have specific state and federal emissions standards for facilities like this, standards to compare against.

4.   Penalty fees or fines constitute another form of economic incentive for not violating emission standards and these are widely adopted.

5.   Stiffer emission standards are being introduced to reduce permissible levels.

6.   Because of a grandfather clause, the strict emission standards only apply to new cars.

7.   Overall, they were intended to bring emission standards for heavy vehicles into line with those for cars.

8.   The EC Commission claimed that the new measures surpassed US emission standards and were compatible with those set by Austria and Switzerland.

9.   During the year exhaust emission standards, requiring the fitment of catalytic converters, were introduced in Mexico, the Czech and Slovak Republics and Thailand.

10.   According to the European Commission, the standards surpass US emission standards, bringing the EC into line with Austria and Switzerland.