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of the site as practicable. <br />Only install new impervious surfaces and compact soils where necessary to <br />support the future land use. <br />d. Compensate for increased runoff volumes caused by new impervious <br />surfaces and soil compaction by reducing storm water peak flows to less <br />than predevelopment levels. <br />Storm water management practices that meet the criteria in this regulation, and <br />additional criteria required by the Mayfield Village Engineer, shall comply with <br />this regulation. <br />Practices designed for final use: Storm water management practices shall be <br />designed to achieve the storm water management objectives of this regulation, to be <br />compatible with the proposed post-construction use of the site, to protect the public <br />health, safety, and welfare, and to function safely with minimal maintenance. <br />Storm water mana~-ement for all lots: Areas developed for a subdivision, as defined <br />in Chapter II13.22 Mayfield Village's Planning and Zoning code, shall provide <br />storm water management and water quality controls for the development of all <br />subdivided lots. This shall include provisions for lot grading and drainage that <br />prevent structure flooding during the 100-year, 24-hour storm; and maintain, to the <br />extent practicable, the pre-development runoff patterns, volumes, and peaks from <br />the lot. <br />4. Storm water facilities in water resources: Storm water management practices and <br />related activities shall not be constructed in water resources unless the applicant <br />shows proof of compliance with all appropriate permits from the Ohio EPA, the <br />U.S. Army Corps, and other applicable federal, state, and local agencies as required <br />in Section 1128.07 of this regulation, and the activity is in compliance with Chapter <br />1129 [Mayfield Village's Erosion and Sediment Control requirements) all as <br />determined by the Mayfield Village Engineer <br />Storm water ponds and surface conveyance channels: All storm water pond and <br />surface conveyance designs must provide a minimum of one (1) foot freeboard <br />above the projected peak stage within the facility during the 100-year, 24-hour <br />storm. When designing storm water ponds and conveyance channels, the applicant <br />shall consider public safety as a design factor and alternative designs must be <br />implemented where site limitations would preclude a safe design. <br />Exemption: The site where soil-disturbing activities are conducted shall be exempt <br />from the requirements of Section 1128.09 if it can be shown to the satisfaction of <br />the Mayfield Village Engineer that the site is part of a larger common plan of <br />development where the storm water management requirements for the site are <br />provided by an existing storm water management practice, or if the storm water <br />management requirements for the site are provided by practices defined in a <br />regional or local storm water management plan approved by the Mayfield Village <br />Engineer. <br />Maintenance: All storm water management practices shall be maintained in <br />