In a rule published July 2, 2002, EPA found the Arizona Department of Environmental Quality’s "Plan for Attainment of the 24-Hour PM10 Standard – Maricopa County PM10 Nonattainment Area" (May 1997), inadequate to achieve attainment of the 24-hour National Ambient Air Quality Standards for particulate matter 10 microns or fewer in aerodynamic diameter (PM10) at the Salt River monitoring site. The 1997 ADEQ SIP revision included attainment and Reasonable Further Progress demonstrations for the 24-hour NAAQS at the Salt River air quality monitoring site of the Maricopa County PM10 Serious Nonattainment Area, as well as at three other monitoring sites in the Phoenix area, - the Maryvale, Gilbert, and West Chandler sites. On August 4, 1997, EPA approved ADEQ’s attainment and RFP demonstrations for the Salt River monitoring area, which showed that the 24-hour PM10 NAAQS would reach attainment in the area by May 1998. Due to continuing violations of the 24-hour PM10 NAAQS at the Salt River air quality monitoring site since May 1998, EPA subsequently required Arizona to submit a revision to correct SIP inadequacies. This document consists of Arizona’s revisions to the state implementation plan for the Maricopa County PM10 Serious Nonattainment Area as described by EPA in its Federal Register notice of disapproval.

The Arizona Tax Expenditure Report is a study prepared for the Governor and the Legislature by the Arizona Department of Revenue's Office of Economic Research and Analysis. The purpose of this report is to provide a better understanding of the costs associated with the existing set of tax exemptions, exclusions, deductions, and credits. There are sections on every tax imposed in Arizona. In each section, provisions dealing with that specific tax type are analyzed.

Arizona Revised Statute § 43-1089.01 provides a non-refundable individual tax credit for fees and cash contributions paid to public schools in Arizona for the support of extracurricular activities or character education programs. This credit is available only to individuals. The credit is equal to the amount of fees paid or amount contributed up to $200 for single or heads of household taxpayers and up to $400 for married taxpayers that file a joint return.

The mission statement of the Department of Revenue is to serve the people of Arizona by administering tax laws with integrity, fairness and efficiency. It is our vision that we set the standard for tax services. Tax laws that fall under the department’s purview are primarily in the areas of income, transaction privilege (sales), use, luxury, withholding, property, estate, fiduciary, bingo, and severance.

The Clean Air Act states that an area can be redesignated to attainment if specific conditions are met. This document demonstrates that all CAA requirements for attainment have been met, summarizes the progress of the area in attaining the PM10 standard, demonstrates that the Bullhead City area qualifies for EPA’s Clean Data Policy and Limited Maintenance Plan option, and includes a maintenance plan to assure continued attainment for ten years after the redesignation. This document includes a formal request to the U.S. Environmental Protection Agency to redesignate the Bullhead City, Arizona PM10 nonattainment area to attainment for the health-based 24-hour average and annual average PM10 National Ambient Air Quality Standard.

In addition, this document includes a formal request to revise the nonattainment area boundary, as currently defined in 40 CFR 81.303, to exclude three townships (108 square miles) in the east and south of the nonattainment area. The rationale for eliminating the three townships is that the land contains undisturbed desert terrain. The majority of the three townships is federal land managed by the Bureau of Land Management and state land managed by the Arizona State Land Department. Analyses included in this document show that ambient air quality measurements have remained below the NAAQS for PM10, and both the 24-hour average design value and annual average PM10 design value are below EPA’s LMP allowable limits. This document also demonstrates that the emission reduction control measures responsible for the air quality improvement are both permanent and enforceable.