Orange County NC Website
Browse       Search
<br /> <br /> <br />39 NELSON MULLINS RILEY & SCARBOROUGH LLP <br /> For informational purposes only. Past success does not indicate the likelihood of success in any future legal representation. <br /> <br />Multiply calculated average daily demand by 2.5 Peaking Factor to obtain Peak Flow <br />x ܳ௉ா஺௄ ൌ ͸͵Ǥ͹ܩܲܯ כ ʹǤͷ ൌ ͳͷͻǤʹܩܲܯ <br /> <br />e. Additional Water Needs for Build-out <br />Based on modeling completed by Hazen and Sawyer in 2019 for OAWS, there is <br />Available Fire Flow (AFF) of 1,010 GPM with the WTP operating, and 880 GPM without <br />the WTP operating. Fire flow tests have not been completed at this time to confirm <br />available fire flow. Based on the proposed building types on “Appendix B of the North <br />Carolina Fire Code” and sprinkler systems to be used on site, any demands in excess <br />of the AFF will be provided via proposed infrastructure improvements and/or on-site <br />storage. <br /> <br />As part of the development Project, the developer shall submit a detailed Utility Master <br />Plan for review and approval to Orange County and Orange-Alamance Water System <br />outlining the appropriate steps that will be taken to provide water service to the project <br />site. It is anticipated that the water service capacity needs of the development may <br />require a water storage tank on site, in addition to installing a new distribution water <br />main between US 70 and the project site. Final hydrant locations shall be review and <br />approved by the County Fire Marshal’s offices as part of the typical site plan review <br />process. <br /> <br />2. Sewer. <br />a. Introduction <br />Sewer service to the project vicinity is provided by the City of Mebane through an <br />agreement with Orange County. The West Ten Road Pump Station & Outfall Project <br />was issued for construction in April 2017 and included the installation of a new 12” <br />sanitary sewer line through the project site to serve a portion of the Buckhorn – Mebane <br />EDD. <br />b. Anticipated Design: <br />The West Ten Road Pump Station & Outfall project was issued for construction in April <br />2017 and included 12” DIP or PVC installed at a minimum slope of 0.22% from the <br />West Ten Road Pump Station through the proposed project site. <br />Proposed sewer use at buildout results in approximately 76,400 GPD (53 GPM). <br />Assuming a Peaking Factor of 2.5, peak sewer flows of approximately 133 GPM are <br />anticipated from this site. <br />Sewer Collection will be supplied to the Project in a phased format consistent with the <br />phasing outlined herein. Below are approximate maximum buildout flows in this sewer <br />outfall and percentage of total capacity in the existing sanitary sewer system: <br /> <br />Sewer <br />Size <br />Minimum <br />Slope Condition Maximum <br />Flow (GPM) <br />Site Peak <br />Flow <br />(GPM) <br />% of <br />Capacity <br />12" SS 0.22% Half Full 375 133 35.4% <br />12" SS 0.22% Full Pipe 750 133 17.7% <br /> <br />43