20240097 Ver 1_More Info Received_20240524

_ A S.rAL HALL ENGINEERING
CUASAND CIVIL SOLUTIONS
May S. 2024
Ryan Davenport
154 Mimosa Blvd
Pine Knoll Shores NC 28512
Dear Mr Davenport
On Friday April 12 a meeting was held on site at 5005 AND 5007 Holly Ln in Morehead
City, NC to discuss possible alternatives to repairing the shoreline which currently
includes an existing seawall which is in a failed state Current seawall along the 2
Properties vanes in construction, height and level of failure Owners are requesting a
solution that can work across both properties for both construction and aesthetics
reasons
After site review the most likely cause of the failure of the existing wall appears to be the
anchorage system Without substantial investigation. including excavation which would
likely require removal of the swimming pool and other improvements on the property, it is
not possible to determine more specifically what part of the anchorage was the failure
point Based on past experience, and engineering judgement. it would be safe to
assume that the failure to the existing wall was most likely the original installation of
deadmen were not far enough back from the wall to resist the overturning of the wall
Possible repairs to shoreline currently under consideration
1 Adjacent wall {constructed very near existing wall matching existing height)
2 Installing new waterward side of existing wall to buttress the existing wail
Building an adjacent wall(within 5' of existing) will require the addition of property sized
and placed anchors on the landward side of the existing wall and would be the least
rmpactful to public trust waters This construction. however. could become very complex
and involve excavating fill material from behind the wall to install new deadmen anchors
Special care should be taken by the contractor to not impose any surcharges on the
existing wall This will make construction difficult and possibly unsafe depending on the
contractor's methods Due to the steep terrain and the current condition of the existing
wall this method is not recommended
Installing a new wall on the walerward side of the existing wall and using this to
buttress the existing wall is another repair that was considered This would be the most
impactful 10 public trust waters as it would require the new wail 10 be built a sufficient

distance from the existing wail to allow for anchors to be tnstalled and effective This
method would require the new wall to be built approximately 15' in front of the existing
wall There are many benefits to this method including but not limited to
1 Safer height New wall height would only need to be approximately 5 abo to low
side resulting in a much safer condition than current height
2 Safer Construction Contractor will not need to use trencttinglshonng practices
with workers at risk of cave in
3 Efficient Construclton Contractors in the area are familiar and capable in this
tYPe of construction. resulting in quicker and more reliable construction
4 Environmental Compliance New wall could be constructed quickly with Less
earthwork involved allowing site to be stabilized much quicker resulting is less
chance of sediment loss
5 Costs Construction of a 5 wall with traditional deadmen anchors would be
substantially less costly than matching the existing wall height and the
corresponding anchoring system Also.there would be a substantial cost savings
of the improvements which would not have to be removed as part of this system
of repair
Need for wall 15' in front of existing wall To support tale existing wall using a new
lower wall walerward of the existing wall it needs to be configured to both support itself
and allow sloped embankment to buttress the existing wall To do this with an allowable
slope, the distance of the anchorage system is a conlrolling factor To properly support a
wall 5' tall wrath the soil conditions and the support loads of the existing wall. the anchor
needs to be 15 0 behind the new wall This requires the new wall to be constructed
15 0 waterward of the existing wall with anchors installed near as constructable to the
existing wall Varying freight wails were considered to help minimize encroachment but a
taller wall requires further anchorage setback, and a Iower wall would cause an unstable
slope of embankment See attached drawing with plan and section view
Sincere)
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Randy Hall. PE #37881
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R S Hall Engineenng NC License #P-2929
1907
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Evans St
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Morehead City, NC 28557
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252-402 9957
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NC Marine Contractor License #87445
May 15, 2024
SUBJECT, Bulkhead Replacement at 5005 & 5007 Holly Ln., Morehead City
NC Division of Coastal Management
400 Commerce Ave.
Morehead City NC, 28557
To Whom It May Concern:
The existing vinyl bulkhead at 5007 Holly Ln. in Morehead City was originally constructed in
2012 as authorized by General Permit 55371C. These types of walls have a 50yr manufacture
warranty. This wall began to show signs of failure within just a few years. In 2020 our company
added soldier pilings along the waterward side in an effort to slow the failure. Evidence of this
continued failure is shown by the angle of the wall in relation to the plumb level in the following
pictures.

r
The existing wooden bulkhead at 5005 Holly Ln. is also in need of replacement. It is our best
professional opinion that both walls are in imminent danger of failure unless they are replaced
as designed by a Professional Engineer. Failure of these walls would result in a great deal of
unconsolidated fill material being deposited into adjacent waters. The existing pool and home
at 5005 Holly would also be in danger of falling in due to the extreme topography of the
location. an behalf of the property owners we ask that these two bulkhead replacements be
permitted as quickly as possible to prevent further damage.
Sincerely,
Hunter Bailey
Bluewater Marine Construction