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assumptions and hydrologic and hydraulic methods and parameters used for these <br />calculations. The applicant shall also include critical storm determination and <br />demonstrate that the runoff from upper watershed areas have been considered in the <br />calculations. <br />12. List of all contractors and subcontractors before construction: Prior to construction or <br />before the pre-construction meeting, provide the list of all contractors and <br />subcontractors names, addresses, and phones involved with the implementation of the <br />Comprehensive Storm Water Management Plan including a written document <br />containing signatures of all parties as proof of acknowledgment that they have <br />reviewed and understand the requirements and responsibilities of the Comprehensive <br />Storm Water Management Plan. <br />13. Existing and proposed drainage patterns: The location and description of existing and <br />proposed drainage patterns and storm water management practices, including any <br />related storm water management practices beyond the development area and the larger <br />common development area. <br />14. For each storm water mana eg ment~ractice to be employed on the development area, <br />include the following: <br />a. Location and size, including detail drawings, maintenance requirements <br />during and after construction, and design calculations, all where applicable. <br />b. Final site conditions including storm water inlets and permanent <br />nonstructural and structural storm water management practices. Details of <br />storm water management practices shall be drawn to scale and shall show <br />volumes and sizes of contributing drainage areas. <br />Any other structural and/or non-structural storm water management <br />practices necessary to meet the design criteria in this regulation and any <br />supplemental information requested by the Mayfield Village Engineer. <br />1128.09 PERF®RMANCE STANDARDS <br />A. General: The storm water system, including storm water management practices for storage, <br />treatment and control, and conveyance facilities, shall be designed to prevent structure <br />flooding during the 100-year, 24-hour storm event; to maintain predevelopment runoff <br />patterns, flows, and volumes; and to meet the following criteria: <br />Inte argr ted practices that address degradation of water resources. The storm water <br />management practices shall function as an integrated system that controls flooding <br />and minimizes the degradation of the physical, biological, and chemical integrity of <br />the water resources receiving storm water discharges from the site. Acceptable <br />pr/actices shall: <br />a. Not disturb riparian areas, unless the disturbance is intended to support a <br />watercourse restoration project and complies with Section 1128 Mayfield <br />Village's Riparian Setback requirements. <br />b. Maintain predevelopment hydrology and groundwater recharge on as much <br />