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the Village Engineer's satisfaction that these BMPs meet the objectives of this regulation as stated in Section 1128.09.C.6. f. For sites greater than five (5) acres, or less than five (5) acres but part of a larger common plan of development or sale which will disturb five (5) or more acres, the Village Engineer may approve other BMPs if the applicant demonstrates to the Village Engineer's satisfaction that these BMPs meet the objectives of this regulation as stated in Section 1128.09.C.6, and has prior written approval from the Ohio EPA. g. For the construction of new roads and roadway improvement projects by public entities (i.e. the state, counties, townships, cities, or villages), the Village Engineer may approve BMPs not included in Table 2 of this regulation, but must show compliance with the current version of the Ohio Departments of Transportations "Location and Design Manual, Volume Two Drainage Design". 2. Criteria applying to all storm water mana eg ment practices. Practices chosen must be sized to treat the water quality volume (WQv) and to ensure compliance with Ohio Water Quality Standards (OAC Chapter 3745-1). a. The WQv shall be equal to the volume of runoff from a 0.75 inch rainfall event and shall be determined according to one of the following methods: (1) Through a site hydrologic study approved by the Mayfield Village Engineer that uses continuous hydrologic simulation; site-specific hydrologic parameters, including impervious area, soil infiltration characteristics, slope, and surface routing characteristics; proposed best management practices controlling the amount and/or timing of runoff from the site; and local long-term hourly records, or (2) Using the following equation: WQv = C*P*A/12 where terms have the following meanings: WQv =water quality volume in acre-feet C =runoff coefficient appropriate for storms less than 1 in. P = 0.75 inch precipitation depth A =area draining into the storm water practice, in acres. Runoff coefficients required by the Ohio Environmental Protection Agency (Ohio EPA) for use in determining the water quality volume are listed in Table 1. Alternatively, the Mayfield Village Engineer may consider use of the following equation to calculate the runoff coefficient if the applicant can demonstrate that appropriate controls are in place to limit the proposed impervious area of the development: C=0.85813 - 0.78iz + 0.7741+0.04, where: i =fraction of the drainage area that is impervious