Ocean Isle Beach, North Carolina
This project involved the expansion of the Ocean Isle Beach WWTP from 0.75 to
2.0 MGD, an effluent reuse system, and directional drills under the
Intracoastal Waterway.
The initial WWTP expansion volume was 1.5 MGD, however the Town decided that
they wanted to increase the plant size to 2.0 MGD. HUA worked with the Town and
modified the engineering design to include the expanded capacity. HUA was
required to complete the re-design of the 2.0 MGD facility within 30 days to
avoid delay of construction. The re-design was completed within the allocated
time and the project remained on-schedule.
Two directional drills were completed under the Intracoastal Waterway to
accommodate water and sewer lines for the Town. The bores included 870 feet for
a 12-inch water main and 1,550 feet for a 14-inch sewer force main.
Given the varying discharge alternatives for the expanded WWTP and the
directional drills under the Intracoastal Waterway, the permitting process
through the varying State agencies was quite extensive. Engineering design was
reviewed by NCDENR engineers in addition to a third party engineer hired by the
Town. Additional coordination with an outside hydrogeologist was also required.
The project was permitted through the NCDENR Non-Discharge Section, NCDENR Land
Quality, and through CAMA. HUA prepared the Environmental Assessment which was
reviewed through the North Carolina Environmental Clearinghouse prior to being
issued a Finding of No Significant Impact (FONSI).
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