131 



14 

 proposed major new and modified stationary sources on air quality 

 related values . 



Our role is to evaluate the level of effects and present this 

 information to the State regulatory agency in support of our 

 recommendations. Comments on these applications have yielded a 

 variety of results including no action taken by the State, 

 post -construction monitoring in the class I areas, emission reduction 

 requirements beyond what was initially requested, more detailed 

 modeling and applicants deciding not to pursue the permit. 



The Forest Service does not address all permit applications in 

 detail. One of the tools we use to help streamline and prioritize our 

 review process are the Forest Service air quality related values 

 (AQRV's) screening criteria which have been prepared for all Class I 

 areas . 



Summary 



In Summary, the Clean Air Act Amendments of 1990 are being implemented 

 but in the short time since enactment it is difficult to assess any 

 changes in ecosystem health directly attributable to the amendments. 



As required by the Clean Air Act, the Forest Service strives to 

 conduct activities that conform with State Implementation Plans. We 

 have found that New- Source Review (NSR) (Section 165(d) of the Clean 

 Air Act) is most effective when the Forest Service is involved in the 



