40 CFR Part 52 (Section 52.1019 to 52.2019 continues coverage on the rules, processes, procedures, and regulations relating to the United States Environmental Protection Agency. This volume continues coverage on air programs and state approval and implementation plans to include Maine, Maryland, Massachusetts, Mississippi, Missouri, Montana, Nebraska, Nevada, New Hampshire, New Jersey, New Mexico, New York, North Carolina, North Dakota, Ohio, Oklahoma, and Oregon. State Departments of Environmental Sciences and Air Resources division personnel may be interested in this volume as well as environmental attorneys, advocates, scientists, and members of the general public living within these states. Code of Federal Regulations Title 40, Volume 4, July 1, 2015 Containing parts Part 52, §§ 52.1019 to 52.2019 Part 52; APPROVAL AND PROMULGATION OF IMPLEMENTATION PLANS (CONTINUED)