Navigating Ohio EPA’s New Wetlands & Streams Regulations

The Ohio Environmental Protection Agency (EPA)’s Division of Surface Water recently implemented significant updates to regulations on wetlands and streams, impacting industries from transportation to development and infrastructure.

These changes, effective as of August 2024, were outlined by 401/Wetlands Manager Anna Kamnyev during her October 8, 2024, presentation at the Ohio Transportation Engineering Conference (OTEC). Below is a summary of the primary changes and how EnviroScience can assist clients in staying compliant amid these regulatory updates.

Understanding the New Regulations

Integration of Mitigation Guidance and Senate Bill 9
Effective August 1, 2024, the EPA incorporated mitigation guidance per House Bill 175 into Ohio Administrative Code (OAC) sections 3745-1-50 through 3745-1-54 and 3745-32-01 through 3745-32-04. These sections establish wetland water quality standards and the 401 Water Quality Certification process, ensuring that mitigation for activities affecting wetlands and streams is both effective and consistent.

Adoption of the Ohio Stream Assessment Method (OSAM)
The Ohio Stream Assessment Method (OSAM) is a new functional assessment tool adapted from the Georgia Stream Quantification Tool (SQT) and Stream Functional Pyramid framework. OSAM evaluates stream functions across hydrology, geomorphology, and biology. It uses a debit/credit system to quantify environmental impacts and associated mitigation efforts, facilitating precise assessments and restoration planning.

Emphasis on Early Coordination
The updated regulations encourage early coordination with the EPA, allowing project proponents to engage with the agency at the pre-application stage. This proactive approach, particularly valuable for infrastructure projects like bridges and culverts, can help identify and address environmental concerns early, minimizing the risk of costly redesigns and delays.

Updated Standards for Culvert Design and Installation
New culvert design and installation standards ensure compliance with Nationwide Permit Conditions or Regional General Permits. These standards are intended to maintain stream continuity and minimize ecological disruptions that could affect aquatic habitats and lead to erosion.

How EnviroScience Can Assist

Navigating these changes can be complex, but EnviroScience offers a comprehensive suite of services to help clients through every step:

Wetland and Stream Delineation
Our experts conduct detailed assessments to identify and map wetlands and streams on your property, ensuring precise alignment with regulatory requirements.

Permitting Assistance
We prepare and submit permit applications, including 401 Water Quality Certifications and 404 Permits, streamlining approval and reducing the risk of delays.

Mitigation Planning and Implementation
EnviroScience develops and executes mitigation plans in line with Ohio EPA’s standards, ensuring all environmental impacts are properly managed.

Early Coordination Support
We facilitate early engagement with regulatory agencies, helping identify potential environmental issues and develop proactive strategies.

With EnviroScience’s expertise, clients can meet Ohio’s regulatory requirements while keeping projects on track. For more information on how we can support your project, please visit our Wetlands & Streams Services page at https://www.enviroscienceinc.com/services/wetlands-streams/.

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