Mandatory Phosphate Mine Boundaries 2020

The Mandatory Phosphate Mine Boundaries layer contains the conceptual boundaries of all active mandatory phosphate mines within Florida in 2020. 'Mandatory Phosphate Mines' does not indicate that the area is required to be mined for phosphate; 'Mandatory' refers to the regulatory status of the land. Land mined for phosphate since July 1, 1975 is 'Mandatory,' and is required by Florida law to be reclaimed (contoured and re-vegetated). Land mined prior to July 1, 1975 was not required to be reclaimed. This layer provides the mine boundary for mines that are subject to the regulatory requirements of Chapter 378, Part III, F.S. and/or Chapter 373, Part IV. F.S. and Chapter 62C-16, F.A.C. Mandatory phosphate mining occurs primarily in the central Florida phosphate mining district in Polk, Hillsborough, Manatee, and Hardee counties and one mine in North Florida in Hamilton County. This layer was designed to provide the Mining and Mitigation Program with a graphical representation of the Mandatory Phosphate boundaries for planning and management purposes. Because this data is a work in progress, it may contain errors such as missing features, outdated features, overlapping features, erroneous status of features, variations in accuracy, or attribute errors. This layer was created and maintained by the Florida Department of Environmental Protection, Program Support.强制性磷酸盐矿边界图层（Mandatory Phosphate Mine Boundaries layer）包含2020年佛罗里达州境内所有在营强制性磷酸盐矿的概念性边界。此处所称“强制性磷酸盐矿”并非指该区域必须开展磷酸盐开采作业，“强制性”仅指代该土地的监管属性。1975年7月1日之后用于磷酸盐开采的土地属于“强制性”范畴，根据佛罗里达州法律，此类土地必须进行复垦（即地形重塑与植被恢复）；而1975年7月1日之前进行的磷酸盐开采土地则无复垦要求。本图层为受《佛罗里达州法典（Florida Statutes，简称F.S.）》第378章第三部分、第373章第四部分，以及《佛罗里达州行政法典（Florida Administrative Code，简称F.A.C.）》第62C-16章监管要求约束的矿山提供矿界信息。强制性磷酸盐开采活动主要集中在佛罗里达州中部的磷酸盐矿区，覆盖波尔克（Polk）县、希尔斯伯勒（Hillsborough）县、马纳蒂（Manatee）县与哈迪（Hardee）县，另有一处矿山位于佛罗里达州北部的汉密尔顿（Hamilton）县。本图层旨在为矿业与缓解计划（Mining and Mitigation Program）提供强制性磷酸盐矿边界的可视化呈现，以支撑规划与管理工作。由于本数据仍处于开发完善阶段，可能存在各类错误，包括要素缺失、信息过时、要素重叠、要素状态错误、精度偏差或属性错误等。本图层由佛罗里达州环境保护部项目支持办公室创建并维护。