Under CGP, hydromodification requirements can be superseded by which plan?

• A. Local SWMP
• B. State policy
• C. Federal permit
• D. Project plan

Answer: (A)

Hydromodification controls under the Construction General Permit are designed to limit how development changes stream hydrology. If a local Storm Water Management Plan has been approved and covers hydromodification, it can set the requirements for projects within that jurisdiction and take precedence over the CGP’s generic provisions. This keeps regulation aligned with local watershed conditions and policies, avoiding duplication and conflicts. A state policy, a federal permit, or a project-specific plan doesn’t automatically override the CGP in the same way, so the Local SWMP is the plan that supersedes.