Ohio Rev. Code Ann. § 6111.30
(A) Applications for a section 401 water quality certification required under division (P) of section 6111.03 of the Revised Code shall be submitted on forms provided by the director of environmental protection and shall include all information required on those forms as well as all of the following:
(I) Mitigation required by a section 401 water quality certification may be accomplished by any of the following:
(J) The director may establish a program and adopt rules in accordance with Chapter 119. of the Revised Code for the purpose of certifying water quality professionals to assess streams to determine existing aquatic life use and to categorize wetlands in support of applications for section 401 water quality certification under divisions (A)(2) and (3) of this section and isolated wetland permits under sections 6111.022 to 6111.024 of the Revised Code. The director shall use information submitted by certified water quality professionals in the review of those applications. Rules adopted under this division shall do all of the following:
(1) Provide for the certification of water quality professionals to conduct activities in support of applications for section 401 water quality certification and isolated wetland permits, including work necessary to determine existing aquatic life use of streams and categorize wetlands. Rules adopted under division (J)(1) of this section shall do at least all of the following: