Good: General structure and details supported by DuPont and the Chemical Industry
Bad: Implementation and interpretation by EPA and Courts on some issues (e.g. NSR)
Room for improvement:
* Short time intervals for NAAQS standards reviews (5 yrs.)
* Short times for implementation from a new standard to attainment (i.e., 5 years): the classification and SIP process takes almost that long, stationary planning and construction takes almost that long, and mobile sources standards and fleet turnover can take longer
* Precautionary basis of NAAQS standards setting using statistical epidemiology studies needs "cause and effect confirmation"
* Air permit fees need limits: escalating fees with a now mature program need justification