Orange County NC Website
I <br /> I <br /> I!I <br /> C. Nutrient Export Reduction Options <br /> If calculations show that the development will contribute greater than 3.6 lbs/ac/yr <br /> of nitrogen, then the options shown below are available. <br /> 1. Residential Development <br /> a) If the calculated nitrogen export is less than 6.0 lbs/ac/yr,then <br /> the owner may: <br /> (1) Install BMP's specified in Section 4 to reduce nitrogen) <br /> export amounts to 3.6 lbs/ac/yr. I <br /> (2) Pay a one-time offset payment of$330/lb. This offset li <br /> fee will go to the Wetlands Restoration Program(WRP) <br /> The WRP will utilize these fees in accordance with the <br /> Basinwide Wetlands and Riparian Restoration plans. It is <br /> the policy of the WRP to utilize the funds where they are <br /> generated to the maximum extent possible. <br /> (3) A combination of BMP's and offset payments may be <br /> used to achieve 3.6 lbs/ac/yr. <br /> b) If the calculated export is greater than 6.0 lbs/ac/yr,the owner <br /> must use on- site BMP's to lower the nitrogen export to 6.0 <br /> lbs/ac/yr. The owner may then use one of the above options to <br /> achieve a nitrogen export level of 3.6 lbs/ac/yr. <br /> 2. Commercial and Industrial <br /> II <br /> a) If the calculated export is less than 10.0 lbs/ac/yr,then the <br /> owner may: <br /> (1) Install BMP's specified in Section 4 to reduce nitrogen <br /> export amounts to 3.6 lbs/ac/yr. <br /> (2) Pay a one-time offset payment of$330/lb. This offset <br /> fee will go to the Wetlands Restoration Program(WRP) <br /> The WRP will utilize these fees in accordance with the <br /> Basinwide Wetlands and Riparian Restoration plans. It is <br /> the policy of the WRP to utilize the funds where they are <br /> generated to the maximum extent possible. <br /> (3) A combination of BMP's and offset payments may be <br /> used to achieve 3.6 lbs/ac/yr. <br /> b) If the calculated export is greater than 10.0 lbs/ac/yr,the owner <br /> must use BMP's to lower the nitrogen export to 10.0 lbs/ac/yr. The <br /> owner may then use one of the above options to achieve a nitrogen!i <br /> export level of 3.6 lbs/ac/yr. <br /> D. Calculating Peak Runoff Volume <br /> For all new development,there shall be no net increase in peak flow leaving the <br /> site from the predevelopment conditions for the 1 year,24 hour storm. <br /> I <br /> 1. The following are acceptable methodologies for computing the pre- I <br /> and post- development conditions for the 1 year, 24 hour storm. <br /> 2� <br />