WATER QUALITY STANDARDS. Chapter of the ADMINISTRATIVE CODE. December 15, 2009 Effective March 15, 2010

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1 STATE OF OHIO WATER QUALITY STANDARDS Chapter of the ADMINISTRATIVE CODE Most Recent Revision: December 15, 2009 Effective March 15, 2010 Ohio Environmental Protection Agency Division of Surface Water Standards & Technical Support Section

2 TABLE OF CONTENTS OAC Rule # Rule Title Effective Date Purpose and applicability... 12/30/ Definitions... 12/30/ Analytical methods and availability of documents... 10/5/ Criteria applicable to all waters... 10/15/ Antidegradation... 3/15/ Mixing zones... 10/31/ Water use designations and statewide criteria... 3/15/ Hocking river drainage basin... 4/23/ Scioto river drainage basin... 10/9/ Grand river drainage basin... 4/23/ Maumee river drainage basin... 10/9/ Sandusky river drainage basin... 4/1/ Central Ohio tributaries drainage basin... 7/21/ Ashtabula river drainage basin... 7/21/ Little Beaver creek drainage basin... 4/1/ Southeast Ohio tributaries drainage basin... 7/21/ Southwest Ohio tributaries drainage basin... 10/9/ Little Miami river drainage basin... 10/9/ Huron river drainage basin... 4/1/ Rocky river drainage basin... 4/23/ Great Miami river drainage basin... 4/23/ Chagrin river drainage basin... 4/23/ Portage river drainage basin... 4/23/ Muskingum river drainage basin... 4/23/ Mahoning river drainage basin... 10/9/2009 continued ii

3 TABLE OF CONTENTS CONTINUED OAC Rule # Rule Title Effective Date Cuyahoga river drainage basin... 4/1/ Black river drainage basin... 4/23/ Vermilion river drainage basin... 4/1/ Wabash river drainage basin... 7/21/ Mill creek drainage basin... 3/29/ Lake Erie standards... 10/31/ Ohio river standards... 12/30/ Water quality criteria for the lake Erie drainage basin... 12/30/ Water quality criteria for the Ohio river drainage basin... 12/30/ Site-specific modifications to criteria and values... 12/30/ Methodologies for development of aquatic life criteria and values... 2/22/ Methodology for deriving bioaccumulation factors... 10/31/ Methodologies for development of human health criteria and values for the lake Erie drainage basin... 10/5/ Methodology for development of wildlife criteria for the lake Erie drainage basin... 10/5/ Wetland definitions... 5/1/ Wetland narrative criteria... 10/17/ Numeric chemical criteria for waste water discharges to wetlands... 5/1/ Wetland use designation... 5/1/ Wetland antidegradation... 10/17/2003 iii

4 LIST OF TABLES Table # Table Title Page # OAC rule Best available demonstrated control technology for new sources discharging sanitary wastewater Declining fish species Threatened species Superior high quality waters Outstanding state waters based on exceptional ecological values Outstanding state waters based on exceptional recreational values Outstanding national resource waters OAC rule Statewide water quality criteria for the protection of aquatic life Warmwater habitat, modified warmwater habitat and limited resource water outside mixing zone maximum total ammonia-nitrogen criteria Exceptional warmwater habitat outside mixing zone maximum total ammonia-nitrogen criteria Coldwater habitat and seasonal salmonid habitat outside mixing zone maximum total ammonia-nitrogen criteria Warmwater habitat outside mixing zone 30-day average total ammonia-nitrogen criteria Exceptional warmwater habitat outside mixing zone 30-day average total ammonia-nitrogen criteria Modified warmwater habitat outside mixing zone 30-day average total ammonia-nitrogen criteria Coldwater habitat outside mixing zone 30-day average total ammonia-nitrogen criteria Statewide water quality criteria for the protection of aquatic life for water hardness dependent criteria Statewide water quality criteria for the protection of aquatic life for water ph dependent criteria continued iv

5 LIST OF TABLES CONTINUED Table # Table Title Page # 7-11 Statewide water quality criteria for the protection against adverse aesthetic conditions Statewide water quality criteria for the protection of agricultural uses Statewide numerical and narrative criteria for recreational use designations Temperature criteria Biological criteria for warmwater, exceptional warmwater and modified warmwater habitats Popular paddling streams with identified public access points designated class A primary contact recreation OAC rule Cuyahoga river ship channel point source loads of oxygen demanding substances... 5 OAC rule Lake Erie temperature criteria... 2 OAC rule Water quality criteria for the Ohio river Ohio river water quality criteria for the protection of human health Ohio river temperature criteria... 8 OAC rule Pollutants subject to any methodologies and procedures acceptable under 40 C.F.R Lake Erie drainage basin water quality criteria for the protection of human health and wildlife... 3 OAC rule Ohio river drainage basin water quality criteria for the protection of human health... 2 OAC rule Secondary acute factors... 9 continued v

6 LIST OF TABLES CONTINUED Table # Table Title Page # OAC rule Priorities for K ow experimental and computational techniques for organic chemicals Food-chain multipliers for trophic levels 2, 3 and OAC rule Exposure parameters for the five representative species identified for protection... 8 OAC rule Wetland mitigation table vi

Ohio s Water Resources

Ohio 2010 Integrated Report Section B Ohio s Water Resources B1. Facts and Figures Ohio is a water-rich state bounded on the south by the Ohio and the north by Lake Erie. These water bodies, as well as