HomeMy WebLinkAboutDMF Moratorium Relief AuthorizationFrom:
Harrison, James A
To:
Doliber, Brian C
Subject:
Re: NC DOT Ferry Division Moratorium Relief Request- Pile Repair & Maintenance Spring -Summer 2023
Date:
Thursday, April 6, 2023 9:55:07 AM
Attachments:
imaae001.onno
Outlook- pg2ilj5d.wo
Good morning Brian,
Thank you for providing that detailed schedule of work to be done. Having that level of detail
certainly makes the request much easier to review. Based on the scope of work to be
completed, DMF is amenable to granting the requested relief. There are some
recommendations, though, that will help minimize impacts to resources that may occur during
this work. First, DMF would recommend that during piling removal, the pilings should be
removed slowly and allow sediment to slough off the pilings. This will help to minimize
increases in turbidity. Second, DMF would recommend that piling installation include a soft-
start/ramp-up methodology, starting pile driving at a lower setting (i.e., below 50%) and
gradually ramp up to the full capability. This results in sounds at lower levels at the start of
piling installation, essentially serving as a warning to aquatic organisms in the area to avoid or
leave the area. Third, every effort should be made to safely finish the proposed work ahead of
the expected schedule, minimizing the work that occurs during the moratorium period. Finally,
a turbidity curtain should be used when possible and practical. I fully understand that this may
not be possible in all areas of the basin. But if there are any operations that can utilize a
curtain, they should do so.
If anything else is needed, feel free to reach out. Thanks Brian, and thank you for your
continued coordination!
Jimmy
Jimmy Harrison
Habitat and E_nhancement jection
NC Division of Marine risheries
ame .ham on@n denr. v
252-9+8-5855 (office)
757-272-3250 (Mobile)
"f very Pizza can ke a Personal Pizza if you trtJ, hard enough and believe in yourself"
Email correspondence to and from this address is subject to the
North Carolina Public Records Law and may be disclosed to third parries.
From: Doliber, Brian C <bcdoliber@ncdot.gov>
Sent: Thursday, April 6, 2023 09:38
To: Harrison, James A <James.Harrison@ncdenr.gov>
Subject: RE: NC DOT Ferry Division Moratorium Relief Request- Pile Repair & Maintenance Spring -
Summer 2023
Good morning Jimmy,
We ended up having engine issues with our SkyCo crane barge that altered our schedule but it has
been completely overhauled and is being re -installed over the next couple of weeks. We should have
our final schedule for this spring and summer set. We are requesting moratorium relief for the in -
water pile work outlined below. No dredging is scheduled until Fall of 2023.
• May 1-May 31: Hatteras piling repair & replace (location map attached) --- 59063 NC Hwy 12,
Hatteras NC 27943
A vibratory hammer will be utilized to remove and install all piles. However, if a pile is
broken off beneath the surface, a clamshell bucket will be used to break it loose and
pull it. This is the methodology that the Ferry Division has followed during all previous
dolphin maintenance projects.
• June 1-June 12: Ocracoke H-pile installation to support ramp & gantry (location map
attached)--- 60 Pilot Town Circle, Ocracoke NC 27960
o The ramp and gantry system at the Ocracoke Silver Lake terminal is beginning to lean
forward (waterward). In order to stabilize the ramp & gantry and prevent potential
safety issues or damage an H pile would be installed on each side of both ramps,
approximately 10' landward from the gantry/counterweights. The H-piles would be
driven with a vibratory hammer and a cross beam would be welded from the H-piles to
the gantry.
• June 13-June 18: Fort Fisher navigation aid replacement (location map attached) --- 2422 s.
Fort Fisher Blvd, Kure Beach NC
o During a recent dredging event the HDPE pipe that transports dredging material to the
spoil site became entangled with the piles during an ebb tide and snapped them off at
the top. The navigation aids are located just outside of the ferry basin and exist to allow
for safe navigation in and out of the basin. Temporary floating marine plastic balls have
been installed until the piles can be replaced. All four existing piles are wood and will
be replaced with wooden piles of the same width and length. The location of the piles
will not change. A vibratory hammer, along with a clamshell bucket, will be utilized to
remove and install all piles.
• June 19-June 27: Southport dock piling modifications (location map attached) --- 1650 Ferry
Road, Southport NC 28461
o The dock for the ferry tie-up slips was replaced in 2021 and was positioned slightly too
far to the east. As a result, the furthest landward pile clusters do not adequately
prevent the ferries from coming into contact with the dock. Ferry workers are able to
tie off the boats in a way that prevents damage to the dock once they are in the slips
but adjusting/modifying the pile clusters is the only way to truly resolve the issue. The
current situation poses a risk for property damage and is also a safety concern with
employees working the docks.
For the northern tie-up slip we are proposing installation of 4 additional piles on the
interior sides of the two landward pile clusters. The oak fenders would be removed
from the clusters, 4 new piles would be driven, and then the cables and fenders
would be reinstalled.
For the southern tie-up slip only the southern, landward cluster would need
modified. To help keep the gangway in the proper location the northern cluster
would remain as is. All piles from the southern cluster would be removed and then
reinstalled four feet to the north so the spacing between the two clusters would be
the proper width to stop the ferries from hitting the dock.
A vibratory hammer, along with a clamshell bucket, will be utilized to remove and
install all piles.
• June 28-August 19: Southdock piling repair & replace (location map attached) --- 1380 Irvin
Garrish Highway, Ocracoke NC
A vibratory hammer will be utilized to remove and install all piles. However, if a pile is
broken off beneath the surface, a clamshell bucket will be used to break it loose and
pull it. This is the methodology that the Ferry Division has followed during all previous
dolphin maintenance projects.
If you need any additional information or have any questions let me know.
Thank you,
Brian Doliber
Environmental Program Supervisor/Facility Maintenance Coordinator
Ferry Division
252 232 8025 mobile
252 621 6251 office
bcdoliberg_ncdot.gov
159 Lucinda Lane
Powells Point, NC 27966
From: Doliber, Brian C
Sent: Thursday, February 23, 2023 3:43 PM
To: Harrison, James A <James.Harrison@ncdenr.gov>
Subject: NC DOT Ferry Division Moratorium Relief Request- Pile Repair & Maintenance Spring -
Summer 2023
Good afternoon Jimmy,
The NC DOT Ferry Division is requesting moratorium relief to perform pile repair and maintenance at
the Hatteras, Southdock (north end of Ocracoke), and Ocracoke Silver Lake (south end of Ocracoke)
Ferry Terminals from April 1-August 31 2023. We had planned on dredging the Southdock basin this
spring but postponed it to Fall 23 to stay outside of the moratorium and because some of our pile
clusters are in such poor shape that ferries have incurred damage significant enough to take them
out of service. I provided a brief description of the work to take place at each location and attached
location maps for each terminal. The work will not take the entirety of the requested relief but
because other types of critical issues pop up frequently I wanted the window to be lengthy enough
to account for those unforeseen circumstances. All pile work would take place within the ferry basins
and all of the work at Hatteras and Southdock would take place within the footprint of existing piles.
Hatteras- 50 working days: Perform repair and maintenance on existing pile clusters. Some clusters
would be completely removed and replaced in kind and other would only have the damaged piles
removed and replaced in kind.
Ocracoke- 15 working days: The 2 ramp and gantries at Ocracoke are starting to tilt forward and
need to be stabilized. The piles (2 at each ramp) would be installed behind the gantry in the water
and a steel beam would be welded to the gantry and pile to stabilize it.
Southdock- 45 working days: Perform repair and maintenance on existing pile clusters. Some
clusters would be completely removed and replaced in kind and other would only have the damaged
piles removed and replaced in kind.
A vibratory hammer, along with a clamshell bucket, will be utilized to remove and install the piles.
If you need any additional information to make your determination just let me know and I will be
happy to provide it.
Thank you,
Brian Doliber
Environmental Program Supervisor/Facility Maintenance Coordinator
Ferry Division
252 232 8025 mobile
252 621 6251 office
159 Lucinda Lane
Powells Point, NC 27966
Email correspondence to and from this sender is subject to the N.C. Public Records Law and may be disclosed to third parties.