The subdivider shall design and construct improvements not less than the standards outlined in these Regulations. The work shall be done under Municipal supervision and inspection and shall be completed within the time fixed or agreed upon by the Municipal Engineer. The minimum requirements for materials shall be in accordance with the standards of the current volume of "Construction and Material Specifications" of the State of Ohio Department of Transportation and the requirements of the Ohio Department of Health, and Ohio EPA standards. All inspection costs shall be paid for by the subdivider. Design of all improvements shall conform to standards and specifications of the Municipal Engineer, County Engineer, County Sanitary Engineer and these Regulations.