Area Designations - 2015 Ozone Standard

The United States Environmental Protection Agency (USEPA) requires Michigan to attain the National Ambient Air Quality Standards (NAAQS) for six criteria pollutants. The data contained in this layer file outlines the statewide nonattainment areas and maintenance areas for the 2015 Ozone NAAQS as designated by the USEPA. The nonattainment areas consist of two partial counties (Allegan and Muskegon) and one full county (Berrien) located on the west side along Lake Michigan, as well as a seven-county area ins southeast Michigan. Further information about the six criteria pollutant NAAQS and Michigan’s ozone designation status can be found on EGLE Air Quality Division’s SIP and Attainment webpage. Field Name Alias Description AreaName AreaName Nonattainment Area designation name. This is how the area is typically referred to within regulatory documents. Shape_Area Shape.STArea() N/A Shape_Length Shape.STLength() N/A EpaWebsite EPA Website Link provided to the USEPA Green Book which provides historic and geographic designation information for the 2015 Ozone standard. AdditionalInformation Additional Information Link provided to the general EGLE AQD Attainment and SIP webpage which features additional information on the Ozone NAAQS in Michigan and the related regulatory submittals. EgleAqdWebsite EGLE Website Link provided to the general EGLE Air Quality Division webpage. FederalRegisterNotice FederalRegisterNotice Link provided for each entry to the initial Federal Register notice designating the area as nonattainment. AreaDesignation Area Designation Denotes the area’s current designation and classification status. For the ozone standard areas can be designated and reclassified as marginal, moderate, serious, severe, or extreme nonattainment areas. Additionally, areas which were initially designated as nonattainment and have since come back into attainment are classified as Attainment/Maintenance. Questions about this data can be directed to Marissa Vaerten at [e-mail].美国环境保护署（United States Environmental Protection Agency，USEPA）要求密歇根州达到六项标准污染物的国家环境空气质量标准（National Ambient Air Quality Standards，NAAQS）。本图层文件包含的数据列明了由USEPA指定的2015年臭氧NAAQS对应的全州未达标区域与维持区域。未达标区域包括密歇根湖西侧的两个部分县（阿勒根县、马斯基根县）、一个完整县（贝里恩县），以及密歇根东南部的七县区域。关于六项标准污染物NAAQS以及密歇根州臭氧指定状态的更多信息，可查阅密歇根州环境质量部（EGLE）空气质量部门的SIP与达标情况网页。 字段详情： 1. AreaName：别名AreaName，描述为未达标区域指定名称，为监管文件中该区域的通用称谓。 2. Shape_Area：别名Shape.STArea()，描述为无（N/A）。 3. Shape_Length：别名Shape.STLength()，描述为无（N/A）。 4. EpaWebsite：别名EPA网站，描述为指向USEPA绿皮书的链接，该文档提供2015年臭氧标准的历史与地理指定信息。 5. AdditionalInformation：别名附加信息，描述为指向EGLE空气质量部门通用达标情况与SIP网页的链接，该页面包含密歇根州臭氧NAAQS及相关监管提交文件的详细信息。 6. EgleAqdWebsite：别名EGLE网站，描述为指向EGLE空气质量部门官方主页的链接。 7. FederalRegisterNotice：别名FederalRegisterNotice，描述为指向各条目对应初始联邦公报通知的链接，该通知将对应区域指定为未达标区域。 8. AreaDesignation：别名区域指定，描述为标明区域当前的指定与分类状态。针对臭氧标准区域，可被划定或重新归类为边缘型、中度、严重、极严重或极端未达标区域；此外，最初被指定为未达标区域且现已恢复达标的区域，将被归类为“达标/维持”区域。 如有关于本数据集的疑问，请联系Marissa Vaerten，邮箱：[e-mail]。