2006-016 Ordinance - Laserfiche WebLink

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Ordinance No. 2006-16 Retention Basins (Wet Basins)* 24 hours Constructed Wetlands (above permanent pool) 24 hours Media Filtration, Bioretention 40 hours *Provide both a permanent pool and an extended detention volume above the permanent pool, each sized at 0.75 * WQ~ (g) The owner may request approval from the City of North Olmsted Engineer to use alternative structural Post-Construction BMPs if the owner can demonstrate, in a way that is acceptable to Ohio EPA rules and regulations that the alternative BMPs are equivalent in effectiveness to those listed in Table 2 above. The use of alternative or vender supplied Post- Construction BMPs should be limited to redevelopment projects where justification is provided that the traditional BMPs in Table 2 are technically and economically infeasible. (h) Construction activities shall be exempt from this condition if it can be demonstrated that the WQ~ is provided within an existing structural Post-Construction BMP that is part of a larger common plan of development or sale or if structural Post-Construction BMPs are addressed in a regional or local storm water management plan. (i) For redevelopment projects (i.e., developments on previously developed property), Post-Construction practices shall either ensure a 20 percent net reduction of the site impervious area, provide for treatment of at least 20 percent of the WQ~, or a combination of the two. (j) Site Description: 1) The prior land uses of the site 2) The nature and type of construction activity (e.g., low density residential, shopping mall, highway, etc.) 3) Total area of the site and the area of the site that is expected to be disturbed (i.e., grubbing, clearing, excavating, filling or grading, including off-site borrow, fill or spoil areas and off-site utility installation areas) 4) Amount of the impervious area and percent imperviousness created by the construction activity 5) Name and/or location of the immediate receiving stream or surface water(s) and the first subsequent named receiving water and the major river watersheds in which it is located. (k) A vicinity sketch locating: 1) The development area 2) The larger common plan of development or sale 3) All pertinent surrounding natural features within 200 feet of the development site Including, but not limited to: 4) Water resources such as wetlands, springs, lakes, ponds, rivers and streams (Including intermittent streams with a defined bed and bank) 13