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3 <br /> Amendments to the Orange County <br /> Stonnwater Ordinance for Lands within the Neuse Basin <br /> April 2007 <br /> NOTE: The underlined text will be added to the Ordinance and the struck-through text <br /> will be deleted. The attached Stormwater Ordinance amendments conform to <br /> requirements by the North Carolina Department of Environment and Natural Resources <br /> for counties within the Neuse and Tar-Pamlico River Basins, <br /> Appendix 2 <br /> Table 2a: Nitrogen Export Reduction Options <br /> Residential Commercial/Industrial <br /> If the computed export is less than 6.0 If the computed export is less than 10.0 <br /> lbs/ac/yr,then the owner may either: lbs/ac/yr,then the owner may either: <br /> 1. Install BMPs to remove enough nitrogen 1. Install BMPs to remove enough nitrogen to <br /> to bring the development down to 3.6 bring the development down to 3.6 <br /> lbs/ac/yr. lbs/ac/yr. <br /> 2. Pay a one-time offset payment to bring 2. Pay a one-time offset payment to bring the <br /> the nitrogen down to 3.6 lbs/ac/yr. nitrogen down to 3.6 lbs/ac/yr. <br /> 3. Do a combination of BMPs and offset 3. Do a combination of BMPs and offset <br /> payment to achieve a 3.61bs/ac/yr export. payment to achieve a 3.6 lbs/ac/yr export. <br /> If the computed export is greater than 6.0 If the computed export is greater than 10.0 <br /> lbs/ac/yr,then the owner must use on-site lbs/ac/yr,then the owner must use on-site <br /> BMPs to bring the development's export BMPs to bring the development's export down <br /> down to 6.0 lbs/ac/yr. Then,the owner may to 10.0 lbs/ac/yr. Then,the owner may use one <br /> use one of the three options above to achieve of the three options above to achieve the <br /> the reduction between 6.0 and 3.6 lbs/ac/yr. reduction between 10.0 and <br /> 3.6 lbs/ac/yr. <br /> The table above discusses the option of using offset fees to meet the nitrogen export <br /> levels set for new development activities. These offset fees go to the North Carolina <br /> Ecosystem Enhancement Program (NCEEP). The NCEEP will utilize these fees in <br /> accordance with the Basinwide Wetlands and Riparian Restoration plans. It is the policy <br /> of the NCEEP to utilize the funds where they are generated to the maximum extent <br /> possible as long as they can obtain the cooperation of the local government. <br /> To ealeulate the total amount of offset payment, use the following formula; <br /> *Nitrogen Offset Payment — r (e57 /lb) x (ft of lbs /year) x (30 years) <br /> 1 (Land A f ost$ / A.) .. (I A e /35 A e <br /> - Neuse Nitrogen Export Options <br /> April,2007 <br />