Ohio EPA Proposes New TMDL Rules

This week Ohio EPA proposed amendments to three Implementation of Water Quality Standards (Modeling) Program Rules in Ohio Administrative Code Chapter 3745-2:

• 3745-2-04: Determinations preliminary to development of water quality-based effluent limitations
• 3745-2-10: Waste load allocation for ammonia-nitrogen toxicity
• 3745-2-12: Total maximum daily loads

These rules are being proposed in order to comply with the five-year rule review requirement and to incorporate revisions consistent with new requirements for Total Maximum Daily Load (TMDL) limits passed in last year’s state budget bill.

That bill specifically requires the agency to adopt rules that establish procedures for providing notice to stakeholders and criteria for determining significant public interest in TMDL development.

OMA is on the record (see comment 17) regarding these proposals to ensure that manufacturers and their trade associations can request public hearings on any new TMDLs. 11/13/2018