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18 <br /> schnabel-eng.com 1 . Qualifications / Lake Orange Intake Tower 2 <br /> .. ...... ........... <br /> C. SUBCONSULTANTS <br /> Environmental - Three Oaks Engineering is a woman-owned business focused on helping <br /> our clients accomplish infrastructure projects with careful consideration of community and <br /> environmental needs. Our services include natural systems investigations, soil consulting, public <br /> involvement, and transportation planning. <br /> Survey - Pennoni is a nationwide multidisciplinary firm with the ability to approach engineering <br /> challenges from a wider spectrum of angles that most. The Raleigh office was formerly CH <br /> Engineering whose staff includes 5 licensed Professional Land Surveyors. As CH Engineering <br /> Pennoni has experience performing survey work at Lake Orange. <br /> d. SCOPE OF WORK & PROJECT UNDERSTANDING <br /> Lake Orange Dam (ORANG-005, NC-00773) is located in Cedar Grove, North Carolina and <br /> impounds the East Fork of the Eno River. The dam and reservoir are owned and maintained by <br /> Orange County, and they are used primarily for public water supply and water management <br /> within the East Fork of Eno River, secondary uses include private recreation. The dam is regulated <br /> by North Carolina Department of Environmental Quality NCDEQ Dam Safety as a medium-size, <br /> high hazard structure. According to the NCDEQ Dam Safety inventory, the dam was constructed <br /> in 1969. The dam is an approximately 30-foot high, 1,100-foot-long earthen embankment that <br /> impounds an approximately 140-acre lake at normal pool and has a maximum storage capacity <br /> of approximately 1,640 acre-feet. Flows from the reservoir are controlled with an intake tower <br /> structure with four sluice gates at various elevations, a fifth sluice gate is used to regulate flow <br /> from the intake tower into the outlet conduit. A concrete side-channel style trapezoidal chute <br /> spillway acts as the auxiliary spillway and is located on the left abutment. The control section of the <br /> auxiliary spillway is regulated by removable flashboards. <br /> The principal spillway consists of a reinforced concrete covered intake tower with a 48-inch <br /> diameter reinforced concrete outlet conduit. The intake tower is partially embedded in the <br /> upstream embankment slope. The intake tower has four sluice gates at various elevations <br /> connected to the reservoir. A fifth sluice gate is installed at the base of the riser to control the <br /> outlet conduit. <br /> Schnabel will actively work with the County to develop a solution to replace or rehabilitate <br /> the existing intake tower such that it meets your needs. A best-value solution will be developed <br /> considering the County's long-term needs and goals for water supply, water quality, ease of <br /> maintenance, and personnel and public safety. <br /> The Schnabel team has the unique expertise, experience, and depth of resources required for <br /> this project and has developed a proven approach to effectively and efficiently developing and <br /> implementing cost-effective solutions for dam and water supply projects, like the Lake Orange <br /> Intake Tower Rehabilitation Project. We have readied a team of professionals to handle the <br /> entire process from field investigations through permit approvals. Our team also has experience <br /> providing turnkey engineering services through construction and can provide these services once <br /> the project is ready for construction. <br /> The following subsections describe our team's approach and work plan to fulfilling the scope of <br /> services listed in the RFQ. This is a phased approach that involves ongoing collaboration with the <br /> County, ensuring the most appropriate intake solution is selected and developed on time and on <br /> budget. The bottom line is that the Schnabel team will work with Orange County to meet your <br /> objectives. <br /> 1. TASK 1 — KICKOFF AND FIELD INVESTIGATIONS <br /> 1.1 Historic Information Review, Kickoff Meeting, and Site Inspection <br /> Since Schnabel has already worked on Lake Orange Dam, we are familiar with the site and <br /> available information. To further familiarize our team with the project and inform the development <br /> Build Better.Together. <br />