Kentucky NPL Superfund Site Boundaries, U.S. EPA (Public)

Overview This feature service provides polygon boundaries for U.S. Environmental Protection Agency National Priority List (NPL) Superfund sites across the United States and its territories. Superfund features are managed by regional teams of geospatial professionals and remedial program managers (RPMs). Feature Layer Data are harvested from regional datasets on a weekly basis to refresh this national dataset and feature services. Superfund Site Boundaries Boundaries represent the footprint of a whole site, defined for purposes of this effort as the sum of all of the Operable Units (OUs) and the current understanding of the full Extent of Contamination. For Federal Facility sites, the total site polygon may be the Facility boundary. As site investigation and remediation progress, OUs may be added, modified or refined, and the total site polygon is updated accordingly.概述 本要素服务提供美国及其领地范围内美国环境保护署（U.S. Environmental Protection Agency, EPA）国家优先名录（National Priority List, NPL）超级基金场地的多边形边界。 超级基金场地要素由地理空间专业人员与补救项目管理员（Remedial Program Managers, RPMs）组成的区域团队负责管理。 要素图层数据每周从区域数据集获取更新，以刷新此全国性数据集与要素服务。 超级基金场地边界代表完整场地的覆盖范围，本次工作中将其定义为所有可操作单元（Operable Units, OUs）与当前对全部污染范围的认知之和。对于联邦设施场地，总场地多边形可能为设施边界。随着场地调查与修复工作推进，可操作单元可能会新增、修改或细化，总场地多边形也会随之更新。