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

This layer contains one boundary (one record) for each EPA Region 6 Superfund NPL Site as of 3/1/2023. Each boundary represents the outer lines of the site.本图层针对截至2023年3月1日的每一处美国环境保护署第六区（EPA Region 6）超级基金国家优先名录（Superfund National Priorities List, NPL）场地，均对应一条边界（即一条数据记录），每条边界代表该场地的外围轮廓线。