PM-2.5 Maintenance Areas

The PM-2.5 maintenance areas for the DVRPC region represent areas that meet federal air quality standards for particulate matter pollution. The DVRPC region covers the following three maintenance areas: the Philadelphia-Wilmington, PA-NJ-DE area; the New York-Northern New Jersey-Long Island, NY-NJ-CT area; and the Delaware County, PA area.特拉华河谷区域规划委员会（Delaware Valley Regional Planning Commission，简称DVRPC）区域的细颗粒物（PM₂.₅）维护区域，均为符合联邦颗粒物污染空气质量标准的区域。该DVRPC区域涵盖以下三类维护区域：费城-威尔明顿（宾夕法尼亚州-新泽西州-特拉华州）区域、纽约-新泽西州北部-长岛（纽约州-新泽西州-康涅狄格州）区域，以及宾夕法尼亚州特拉华县区域。