Stormwater Treatment; Requires compensating stormwater treatment to comply with certain provisions unless certain circumstances exist; explaining types of mitigation measures for compensating stormwater treatment that DEP or water management district governing board must consider; authorizes mitigation measures or enhancement credits intended to address certain impacts to be generated by certain entities & sold only to certain environmental resource permit applicants; requires that certain uses of public lands require private entity to cease certain activities upon certain determination by department.