Which plans must a locality's ordinance require for submission and approval?

The correct answer involves the requirement for both an Erosion and Sediment Control plan and a Stormwater Management plan, which reflects comprehensive stormwater management practices necessary for maintaining environmental quality and protecting water resources.

An Erosion and Sediment Control plan is designed to prevent soil erosion and manage sediment runoff during construction activities. This plan is critical for minimizing the impact of land disturbances on surrounding environments, thereby preventing the degradation of water quality due to sedimentation.

On the other hand, a Stormwater Management plan addresses the overall management of stormwater runoff through various practices aimed at reducing flooding, minimizing pollutants in runoff, and mitigating other impacts associated with increased impervious surfaces. This plan establishes methods for controlling quantity and quality of stormwater, as well as integrating sustainable practices like green infrastructure.

Requiring both plans helps ensure that all aspects of stormwater management are adequately addressed—both during the construction phase and in ongoing management post-construction. Localities benefit from these plans to comply with federal and state regulations, ultimately leading to healthier ecosystems and reduced risks of flooding and drainage issues. Such a dual approach is often mandated by local ordinances to provide a comprehensive framework for stormwater management.