Boundaries of EPA R6 NPL Sites as of 3/1/2023; EPA Region 6 Superfund, AR, LA, NM, OK, TX

This layer contains boundaries of EPA Region 6 Superfund NPL Sites as of 3/1/2023. The boundaries represent several types of features such as operable units, plumes,...本图层包含截至2023年3月1日的美国环境保护署（Environmental Protection Agency, EPA）第六区超级基金国家优先名录（National Priorities List, NPL）场地的边界。此类边界涵盖多种类型的特征要素，例如作业单元（operable units）、污染物羽流（plumes）等。