Linn County, IA Environmental Rules: Erosion Control (2026)

To limit the impact of stormwater runoff, and accompanying sediment, heat, pollutants, and energy, certain development or clearing activities will be required to complete and implement a stormwater pollution prevention plan (SWPPP). (1)Activities requiring a SWPPP. All applicants for major subdivisions, and applicants for all other the county permits or approvals that will result in land disturbance activity that meets NPDES Phase II or later requirements shall submit to the county a SWPPP and shall implement the plan. (2)Reviewing agency. No building permit, subdivision approval, or any permit allowing land disturbing activities shall be issued until the county soil and water conservation district (SWCD) reviews the SWPPP, when required. The SWCD shall review the SWPPP and shall submit comments to the county planning and development department within 30 days of a SWPPP submittal that meets the requirements in subsection (b)(3) of this section. (3)Standards of review. a.All plans shall be consistent with National Pollutant Discharge Elimination System (NPDES) Phase II requirements or latest requirements, and mitigation and management techniques, facilities, and practices shall be consistent with stormwater management recommendations of the SWCD and preferred county design and management practices as identified in the UDC.