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DocuSign Envelope ID: FCE3B12B-34AF-485D-9888-6CADC04FD9D6 <br /> Validity: <br /> This proposal shall be void unless properly executed and delivered to Engineer within 30 <br /> days of the date of issuance. <br /> Limited Knowledge of Proiect Requirements: <br /> Client and Engineer recognize that it is not possible to have a full initial understanding of <br /> the scope of work that will be required or requested for a project. During the typical <br /> course of project work, design criteria evolve, new requirements are discovered, and <br /> unforeseeable issues arise. <br /> Basis of Aareement: <br /> Acknowledging the above, Engineer and Client agree that the fee estimates listed herein <br /> are based on the specific criteria, understandings, and assumptions listed below, even <br /> though some of these items may ultimately prove to be incorrect or inadequate to meet <br /> project needs. Where significant deviations occur, Additional Services and/or time <br /> extensions may be necessary. <br /> General <br /> • The site falls within the Joint Planning District of the Town of Carrboro and Orange <br /> County. Within the property, the zoning and design regulations are established by <br /> the Town of Carrboro's Land Development Ordinance and supplemental Town <br /> design manuals will govern the project's design. <br /> • The existing culvert within the public right of way along Old NC 86 will be <br /> designed per NCDOT standards. <br /> • Engineer will provide direct consultant services as needed to subconsultants, <br /> builders, manufacturers, or other third parties related to the project. When <br /> requested by Client, Engineer will provide coordination with these parties, in <br /> representation of Client's interests. <br /> • Drawing and specification formats, graphic styles, and electronic data standards <br /> used for project documents will be at Engineer's discretion. <br /> • Engineer will be allowed to execute project work in a relatively linear and efficient <br /> manner, without unreasonable project delays, complications, re-work, or <br /> coordination with others. <br /> Hydraulic Analysis <br /> • Culverts #1 and #2 depicted on Attachment "A" convey a total of approximately <br /> 102 acres of drainage area upstream from the sites along Buckhorn Branch and a <br /> roadside ditch. <br /> • This drainage basins for each culvert will be analyzed to model both the 10 and <br /> 25 year storm scenarios utilizing the SCS Method per the Town of Carrboro's <br /> standard design requirements. <br /> • Channel depths for both the 10 and 25 year storm scenarios will be calculated to <br /> predict water levels for culvert design parameters. <br /> • Documentation of hydraulic analysis will be prepared for Town review including <br /> hydrographs, times of concentration and land use exhibits, and channel depth <br /> calculations. <br /> 2 <br />