The Environmental Protection Agency seeks public comment on proposed changes to Ohio Admin. Code 3745, pertaining to water quality standards for surface waters of the state and the administrative and technical requirements for wastewater discharge permits. Significant amendments include revision to mixing zone requirements, clarification on facilities required to obtain wastewater discharge permits, revision to imposition of standards of performance for wastewater facilities, revision to the fish tissue mercury value, and revision to minimum monitoring requirements for whole effluent toxicity testing. The deadline for public comment is January 6, 2011. http://www.registerofohio.state.oh.us/pdfs/phn/3745_NO_126081_20101130_0917.pdf.