Orange County NC Website
Browse       Search
<br /> <br /> <br /> <br /> <br /> <br /> <br />August 21, 2023 <br /> <br /> <br />Christopher J. Sandt, PE <br />Staff Engineer <br />Orange County Planning and Inspections Department <br />131 W. Margaret Lane (P.O. Box 8181) <br />Hillsborough, NC 27278 <br />Subject: Proposal for Construction Phase Services for the Lake Orange Dam Auxiliary <br />Spillway Concrete Repairs, Orange County, North Carolina (Schnabel Reference <br />23210035.00P) <br />Dear Mr. Sandt: <br /> <br />SCHNABEL ENGINEERING SOUTH, P.C. is pleased to submit this proposal for construction phase <br />engineering services for the Lake Orange Dam Auxiliary Spillway Concrete Repairs. We prepared this <br />proposal in response to our phone conversation on August 4, 2023. Our proposed scope of services, <br />anticipated schedule, and basis of compensation are described below. <br />PROJECT DESCRIPTION AND BACKGROUND <br />Lake Orange Dam (ORANG-005) is located in Cedar Grove, North Carolina and impounds the East Fork <br />of the Eno River. The dam and reservoir are owned and maintained by Orange County and they are used <br />primarily for public water supply and water management within the East Fork of Eno River, secondary <br />uses include private recreation. According to the North Carolina Department of Environmental Quality <br />(NCDEQ) Dam Safety inventory, the dam was constructed in 1969. The dam is an approximately 30-foot <br />high, 1,100-foot-long earthen embankment that impounds an approximately 140-acre lake at normal pool <br />and has a maximum storage capacity of approximately 1,640 acre-feet. The dam is regulated by NCDEQ <br />Dam Safety as a medium-size, high hazard structure. Flows from the reservoir are controlled with an <br />intake tower structure with four sluice gates at various elevations, a fifth sluice gate is used to regulate <br />flow from the intake tower into the outlet conduit. The auxiliary spillway is a concrete side-channel style <br />trapezoidal chute spillway, located on the left abutment. The control section of the auxiliary spillway is <br />regulated by removable flashboards. <br /> <br />Schnabel entered into an agreement with Orange County on August 25, 2020 to inspect the concrete <br />auxiliary spillway and coordinate with a commercial diver contracted by Orange County to inspect the <br />concrete intake tower; develop a design for sluice gate replacements in the intake tower; and concrete <br />repairs for the intake tower and auxiliary spillway. The auxiliary spillway and intake tower were inspected, <br />and the findings were documented in our Intake Tower and Auxiliary Spillway Inspection Report <br />(Inspection Report) dated January 22, 2021. Our agreement was amended on February 8, 2022 for <br />additional field investigations of the intake tower and again on September 30, 2022 to modify the scope of <br />EXHIBIT A - SCOPE OF WORK <br />DocuSign Envelope ID: 06BFB476-928C-4E3D-BDCF-74A925087AB9