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be shown on one plan sheet to allow a complete view of the site during plan <br />review. If a smaller scale is used to accomplish this, separate sheets providing an <br />enlarged view of areas on individual sheets should also be provided. Existing and <br />proposed drainage patterns and any relevant offsite SCMs should be depicted. For <br />each SCM, include the following: <br />a. An individual identification number <br />b. Location and size <br />C. Final site conditions and detail drawings of stormwater inlets and <br />permanent SCMs. Details of SCMs shall be drawn to scale and shall show <br />relevant volumes, elevations and sizes of contributing drainage areas. <br />d. A completed Ohio EPA WQv Calculator Spreadsheet and/or Runoff <br />Reduction Spreadsheet or other equivalent compliance tools provided by <br />Ohio EPA. <br />e. Any supplemental information requested by the City Engineer. <br />Required Calculations. The applicant shall submit calculations for projected <br />stormwater runoff flows, volumes, and timing into and through all SCMs for <br />flood control, channel protection, water quality and the condition of the habitat, <br />stability and incision of each water resource and its floodplain. These submittals <br />shall be completed for both pre- and post -development land use conditions and <br />shall include the underlying assumptions and hydrologic and hydraulic methods <br />and parameters used for these calculations. The applicant shall also include <br />critical storm determination and demonstrate that the runoff from offsite areas <br />have been considered in the calculations. For each SCM, identify the drainage <br />area and size in acres, percent impervious cover within the drainage area, <br />volumetric runoff coefficient, peak discharge and the time of concentration for <br />each subwatershed. Pervious and impervious areas should be treated as separate <br />subwatersheds unless allowed at the discretion of the City Engineer. Identify the <br />SCM surface area, discharge and dewatering time, outlet type and dimensions. <br />4. Inspection and Maintenance Agreement. The Inspection and Maintenance <br />Agreement required for SCMs under this regulation is a stand-alone document <br />between the City of North Olmsted and the applicant. This agreement shall be <br />recorded with the County. <br />Inspection and Maintenance Plan. This plan will meet the requirements of the <br />Construction General Permit and will be developed by the applicant and reviewed <br />by the City Engineer. Maintenance requirements of each SCM during and after <br />construction should be included. Once the Inspection and Maintenance Plan is <br />approved, a recorded copy of the Plan must be provided to the property owner or <br />association that will be responsible for long-term operation and maintenance of <br />the BMP and submitted to the City Engineer as part of the final inspection <br />approval as described in 928.12. <br />928.09 PERFORMANCE STANDARDS <br />