Newly Adopted Rules

Implementation of Water Quality Standards - OAC 3745-2
Ohio NPDES Permits - OAC 3745-33

The rules were adopted on March 7, 2011 and become effective on June 7, 2011.

Background

The Division of Surface Water (DSW) conducted a review of Chapters 3745-2 and 3745-33 of the Administrative Code, governing the technical process for converting Ohio water quality standards (WQS) to wasteload allocations that can be used as wastewater permit limits and the administrative and technical requirements for writing and obtaining National Pollutant Discharge Elimination System (NPDES) permits. As part of this review, revisions to rule 3745-1-06 were also necessary.

Available documents

• Public notice [PDF 13K]
• Response to comments on the November 2010 proposed rules  [PDF 38K] 
• Adopted rules
  Text to be deleted from the rules is struck out; new text is underlined.   

     OAC Chapter 3745-1 Water Quality Standards

• 3745-1-06 Mixing zones [PDF 7K]

     OAC Chapter 3745-2 Implementation of Water Quality Standards

• 3745-2-02 Definitions [PDF 39K]
• 3745-2-04 Determinations preliminary to development of water quality-based effluent limitations [PDF 32K]
• 3745-2-05 Calculating wasteload allocations [PDF 25K]
• 3745-2-06 Application of preliminary effluent limitations [PDF 32K]
• 3745-2-07 Additive effects of pollutants [PDF 19K]
• 3745-2-08 Mixing zone demonstration and sizing requirements [PDF 33K]
• 3745-2-09 Whole effluent toxicity provisions and water quality based effluent limit calculation procedures [PDF 14K]
• 3745-2-10 Wasteload allocation for ammonia-nitrogen toxicity [PDF 11K]
• 3745-2-12 Total maximum daily loads [PDF 16K]

     OAC Chapter 3745-33 Ohio NPDES Permits

• 3745-33-01 Definitions [PDF 22K]
• 3745-33-02 Ohio NPDES permit required [PDF 7K]
• 3745-33-03 Permit applications [PDF 20K]
• 3745-33-04 Permit actions [PDF 29K]
• 3745-33-05 Authorized discharge levels [PDF 35K]
• 3745-33-07 Establishing permit conditions [PDF 110K]
• 3745-33-08 Generic permit conditions [PDF 15K]
• 3745-33-09 Pollutant minimization programs [PDF 6K]

See the November 2010 proposed rules here.

For additional information

If you would like further information about this rulemaking, please contact:

Eric Nygaard
(614) 644-2024
eric.nygaard@epa.state.oh.us

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