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<br /> <br /> <br /> <br /> <br /> <br /> <br />September 21, 2022 <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: Revised Proposal for Additional Services for the Lake Orange Dam Auxiliary <br />Spillway Concrete Repairs, Orange County, North Carolina (Schnabel Reference <br />20P21019.02) <br />Dear Mr. Sandt: <br /> <br />SCHNABEL ENGINEERING SOUTH, P.C. is pleased to submit this proposal for modification to our dam <br />engineering services for the Lake Orange Dam. We prepared this proposal in response to your emailed <br />request on April 14, 2022 and revised it based on phone conversations on September 21, 2022. Our <br />proposed scope of service modifications, anticipated schedule, and basis of compensation are described <br />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 (In-Water Services, Inc. (In-Water)) contracted <br />by Orange County to inspect the concrete intake tower. The auxiliary spillway and intake tower were <br />inspected, and the findings were documented in our Intake Tower and Auxiliary Spillway Inspection <br />Report (Inspection Report) dated January 22, 2021. The Inspection Report included the following <br />statement: <br />Attachment B - Additional Services (Task Updates)DocuSign Envelope ID: 94DC2E6B-A091-44C2-A636-AEC6DE85AB37