This inventory includes emissions of coarse particulate matter <10 µm in diameter (PM10), fine particulate matter < 2.5 µm (PM2.5), nitrogen oxides, sulfur oxides, and ammonia. Emissions are calculated for both Maricopa County and the PM10 nonattaiment area. Annual totals as well as typical daily emissions are provided for all source categories.

The primary purpose of this study was to develop a plan that enables the Town to facilitate safer and more efficient infrastructure for the traveling public and guide the development of the Business District. This study recommends phased improvement projects to address the multimodal transportation needs of the community, while steering community development and project funding. The study findings will also be incorporated into the Town's Capital Improvement Planning process for the next 5-, 10-, and 20-year time frames.

The purpose of the ambient air monitoring network is to sample air pollution in a variety of settings, assess the health and welfare effects, and assist in determining sources of air pollution. In general, six basic monitoring objectives and five measuring scales are used to determine the network design. Since it is physically and fiscally impossible to monitor the air in every location, representative samples must be obtained. These samples are determined by using the monitoring objectives and the spatial measurement scales. The network must be dynamic enough to maintain a current representative sample of the air quality. Air quality issues such as eight-hour ozone non-attainment boundaries and permits for new sources are diverse and controversial subjects for the citizens of Maricopa County. With its robust air monitoring network and mobile monitoring tools, the department strives to provide the most reliable and relevant air monitoring data to the public.

The Yuma Regional Transit Study identifies transit needs within southwestern Yuma County and presents recommended transit system improvements based on three funding scenarios. This study examined current and projected population, demographics, and employment for the region, conducted extensive public outreach and data collection, identified transit deficiencies and developed recommended transit improvements based on the identified deficiencies.

The La Paz Transportation Planning Study was conducted as part of the Planning Assistance for Rural Areas program sponsored by the Arizona Department of Transportation Multimodal Planning Division. This Study developed 5, 10, and 20-year transportation plans, as well as an implementation program, to guide the County, Towns, and the Colorado River Indian Tribes in meeting transportation needs for the Study Area into the future.

ADOT, in cooperation with the City of Kingman and Mohave County, initiated the Kingman Area Transportation Study Update to update the 2005 Kingman Area Transportation Study. The study provides a plan of improvements for 5-year (short-range), 10-year (mid-range), and 20-year (long-range) transportation planning horizons. The recommendations are multimodal, considering roadways, nonmotorized transportation modes (bicycles and pedestrians), and transit components.

The Arizona Department of Transportation, in cooperation with Lake Havasu City, conducted a long-range corridor study for Mesquite Avenue, McCulloch Boulevard, and Swanson Avenue (referred to in this document collectively as the Corridor). The study looked at ways to support and enhance this revitalization by developing a vision for the Corridor that balances the City’s Main Street Uptown District goals with the need to accommodate future travel demand along each road in the Corridor.

Santa Cruz County was awarded funding from the Arizona Department of Transportation Planning Assistance for Rural Areas program to prepare the Rio Rico Walking and Biking Study. The purpose of the Study is to enable Santa Cruz County to establish a program for the construction of bike lanes and sidewalks that are desired to provide safe and convenient pedestrian and bicycle access and connectivity to select Santa Cruz Valley Unified School District No. 35 facilities as well as use for the general public for transportation and recreational purposes.