An economical transportation system. Continuous evaluation and modification of the transportation system in keeping with current needs and desires of the public. As a result, in 1991, the cities of Yuma and Somerton, and Yuma County adopted a Yuma PM10 State Implementation Plan. In addition, beginning in 1991, the Yuma Metropolitan Planning Organization prepared an Air Quality Conformity Analyses to demonstrate conformity between the PM10 State Implementation Plan, Regional Transportation Plan, and Transportation Improvement Program. In order to implement transportation projects using state or federal funds, or local or private funds on Regionally Significant Routes, the Yuma area must have a conforming transportation plan and transportation improvement program.
Air quality is a vital concern.
Yuma PM10 State Implementation Plan, with local implementation efforts. And further, the Regional Transportation Plan and Program must conform to the PM10 Plan. Unpaved roadways and parking lots are common in several portions of the Yuma urbanized area. In addition, many paved roadways have unpaved shoulders, pullouts, and adjacent parking areas that contribute to the PM10 concern. A Regional Transportation Plan and a Transportation Improvement Program that conform with the Yuma PM10 Non-attainment Area State Implementation Plan.