Masonboro Commons - Boat and RV Storage - Application 4/2/2020
Project Narrative
Masonboro Commons Lot 3
The 1.88 acre site is located at the intersection of Carolina Beach Road and Golden Road in an
unincorporated portion of New Hanover County, NC. The site is zoned B‐2. Adjoining
properties to the north, south, and west are zoned R‐15. Adjoining property to the east is
zoned B‐2, and is a part of the same “Masonboro Commons” commercial development.
Proposed improvements are consistent with this zoning and include 63 boat/RV parking spaces
and associated drive aisles.
The site is presently vacant and mostly clear of trees and vegetation, except for a 20’ wide
vegetated strip which had been previously reserved along the portions of the of the site
adjacent to R‐15 zones. Trees and vegetation in this strip is to be retained and augmented as
needed to provide 100% opacity per NHC zoning regulations.
The site sits atop a ridge. Drainage is towards the commercial development to the east. As this
lot was part of the Masonboro Commons development, the collection system is adjacent to—
and currently receives runoff from—the subject lot.
Access to the site is by an existing signalized driveway off of Carolina Beach Road at Golden
Road. This driveway serves the Masonboro Commons development. Internal drive aisle widths
within the development are sufficient to allow large truck and trailer access to the rear of the
existing building. A proposed gated 20’ wide one way drive aisle will provide access to the
boat/RV parking spaces. This drive aisle and parking will be surfaced with asphalt.
Stormwater runoff will be collected in inlets and conveyed to an infiltration trench designed to
retain and infiltrate runoff from the 1.5” storm within 72 hours. Additional volume in the
collection system and trench is used to attenuate the 25 year storm in accordance with the NHC
stormwater ordinance. Storm events which exceed the combined storage and infiltration
capacity of the system are discharged at 3 inlets which are at low points in the system. The
discharge elevations are set to create a proportional outflow that replicates predevelopment
conditions. The site is graded to preclude runoff from unpaved areas from reaching the
system, minimizing sediment inflow. The collection system structures are provided with 2’
deep sumps to allow for inspection and removal of accumulated sediment. Additionally, the
collection system is oversized to reduce velocity, allowing the course grained soils found onsite
to fall out of suspension prior to reaching the infiltration trench.
Erosion control is accomplished through the temporary use of gravel construction entrances
and silt fence around the site perimeter. Soils onsite have been shown to have exceptional
infiltration capacity, and construction phase surface runoff is expected to be minimal.