The study generally confirms the trends and impacts identified in the February 2001 study "Air Quality in Pima County," and suggests two types of strategies for maintaining air quality and ensuring compliance with federal air quality standards. Potential funding sources and future legislative considerations are briefly discussed.

Provides background information on improved mapping techniques that have led to a proposal to update the Watercourse and Riparian Habitat Protection and Mitigation Requirements Ordinance adopted in 1994. New riparian classification maps will be forwarded to the Board to consider for adoption during 2003.

Recommends where riparian land acquisitions would be most effective in serving as mitigation that would cover all priority vulnerable species identified in the SDCP. Priority is given to reaches of watercourses.