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EFH Mapper Report
EFH Data Notice
Essential Fish Habitat (EFH) is defined by textual descriptions contained in the fishery management plans
developed by the
regional fishery management councils. In most cases mapping data can not fully represent
the complexity of the habitats that make
up EFH. This report should be used for general interest queries
only and should not be interpreted as a definitive evaluation of EFH
at this location. A location-specific
evaluation of EFH for any official purposes must be performed by a regional expert. Please
refer to the
following links for the appropriate regional resources.
Greater Atlantic Regional Office
Atlantic Highly Migratory Species Management Division
Query Results
Degrees, Minutes, Seconds: Latitude = 44º 6' 0" N, Longitude = 70º 53' 38" W
Decimal Degrees: Latitude = 44.100, Longitude = -69.106
The query location intersects with spatial data representing EFH and/or HAPCs for the following species/management units.
*** W A R N I N G ***
Please note under "Life Stage(s) Found at Location" the category "ALL" indicates that all life stages of that species share the same
map and are designated at the queried location.
EFH
Link Data
Caveats
Species/Management
Unit
Lifestage(s) Found
at Location
Management
Council FMP
Atlantic Sea Scallop ALL New England Amendment 14 to the Atlantic Sea
Scallop FMP
Atlantic Wolffish ALL New England Amendment 14 to the Northeast
Multispecies FMP
Winter Flounder
Eggs
Juvenile
Larvae/Adult
New England Amendment 14 to the Northeast
Multispecies FMP
Little Skate Juvenile
Adult New England Amendment 2 to the Northeast
Skate Complex FMP
Ocean Pout
Adult
Eggs
Juvenile
New England Amendment 14 to the Northeast
Multispecies FMP
Atlantic Herring
Juvenile
Adult
Larvae
New England Amendment 3 to the Atlantic
Herring FMP
Link Data
Caveats
Species/Management
Unit
Lifestage(s) Found
at Location
Management
Council FMP
Atlantic Cod
Larvae
Adult
Juvenile
Eggs
New England Amendment 14 to the Northeast
Multispecies FMP
Pollock Juvenile New England Amendment 14 to the Northeast
Multispecies FMP
Red Hake Adult
Eggs/Larvae/Juvenile New England Amendment 14 to the Northeast
Multispecies FMP
Silver Hake Eggs/Larvae
Adult New England Amendment 14 to the Northeast
Multispecies FMP
White Hake
Larvae
Adult
Juvenile
New England Amendment 14 to the Northeast
Multispecies FMP
Windowpane
Flounder
Adult
Larvae
Eggs
Juvenile
New England Amendment 14 to the Northeast
Multispecies FMP
Winter Skate Juvenile New England Amendment 2 to the Northeast
Skate Complex FMP
American Plaice
Adult
Juvenile
Larvae
Eggs
New England Amendment 14 to the Northeast
Multispecies FMP
Smooth Skate Juvenile New England Amendment 2 to the Northeast
Skate Complex FMP
Thorny Skate Juvenile New England Amendment 2 to the Northeast
Skate Complex FMP
Bluefin Tuna Adult Secretarial Amendment 10 to the 2006
Consolidated HMS FMP: EFH
Atlantic Mackerel Juvenile
Adult Mid-Atlantic Atlantic Mackerel, Squid,&
Butterfish Amendment 11
Bluefish Adult
Juvenile Mid-Atlantic Bluefish
Atlantic Butterfish Adult
Juvenile Mid-Atlantic Atlantic Mackerel, Squid,&
Butterfish Amendment 11
Salmon EFH
No Pacific Salmon Essential Fish Habitat (EFH) were identified at the report location.
HAPCs
Link Data Caveats HAPC Name Management Council
Inshore 20m Juvenile Cod New England
EFH Areas Protected from Fishing
No EFH Areas Protected from Fishing (EFHA) were identified at the report location.
Spatial data does not currently exist for all the managed species in this area. The following is a list of
species or management units for which there is no spatial data.
Spatial data does not currently exist for all the managed species in this area. The following is a list of
species or management units for which there is no spatial data.
**For links to all EFH text descriptions see the complete data inventory: open data inventory -->
All spatial data is currently available for the Mid-Atlantic and New England councils,
Secretarial EFH,
Bigeye Sand Tiger Shark,
Bigeye Sixgill Shark,
Caribbean Sharpnose Shark,
Galapagos Shark,
Narrowtooth Shark,
Sevengill Shark,
Sixgill Shark,
Smooth Hammerhead Shark,
Smalltail Shark
Project Scope
Scope Overview
The marina expansion project includes the following primary project elements:
1. Landward Extension of an Existing Fixed Pier
2. Dock A
o Fixed Gangway Access Platform
o 6’ X 80’ ADA-Compliant Gangway
o Floating Concrete Docks
o Floating Concrete Wave Attenuator Docks
3. Dock B - Floating Concrete Docks
4. Dock C – Floating Timber Docks
5. Dredging
This proposed marina expansion is illustrated in the following figure for reference, noting
that this figure is taken from Sheet 3 of the provided Permit Drawings.
The specific scope of work is described in more detail in the following sections.
New Structures and Docks
Landward Extension of Existing Fixed Pier
The existing 16’ wide fixed pier will be extended landward by 65’. This new section of
pier will allow a better delineation of the entrance of the marina and the entrance of the
restaurant and will provide a public viewing area. Additional landward improvements to
connect this pier to public paths are not included at this time.
The structure is expected to be primarily of timber construction, including timber decking
and framing on timber piles supported on concrete footings to generally match the existing
pier in terms of materials and design. The total area of the structure, including necessary
tie-ins to the existing pier, is 981 sf. The structure is expected to require a maximum of 30
piles, noting that the piles will be supported on a continuous concrete footer and as such
will not be driven below existing grades.
Dock A
Dock A refers to those docks located to the east of the existing pier and wave screen as
well as the northernmost “T” head adjacent to the City Channel. A new 12’X16’ (192 sf)
gangway access platform will be built directly adjacent to the existing fixed pier to support
a new 6’x80’ (480 sf) aluminum ADA-compliant gangway to provide pedestrian access to
Dock A. The gangway access platform is expected to be supported by a maximum of 6
piles (see subsequent discussion regarding piles).
The new floating docks for Dock A will be monolithic concrete pontoons which consist of
a foam core encapsulated by reinforced concrete. The outer portion of Dock A which
extends past the end of the existing fixed pier will be wider and include special design
characteristics such as higher mass, deeper draft, etc. to attenuate incoming waves.
Dock A includes a total of 15,874 sf of new floating dock area, 6,800 sf of which will be
Wave Attenuating Docks. The floating docks will be anchored via a maximum of 55 piles
(see subsequent discussion regarding piles).
Dock B
Dock B refers to those docks located on the western side of the existing fixed pier and
wave screen. These docks will be primarily accessed by the existing gangways to the west
side of the existing pier. However, a small floating concrete dock will connect Dock A to
Dock B to ensure that all docks may be accessed via the new ADA-compliant gangway
as/if needed. The new floating docks will be monolithic concrete pontoons as described
above.
The Dock B improvements include removal of 1,628 sf of existing timber floating docks
and installation of 4,023 sf of new floating concrete docks. The floating docks will be
anchored via a maximum of 20 piles (see subsequent discussion regarding piles).
Dock C
Dock C refers to the new dock “tree” of smaller boat slips located west of the existing
floating docks. The new floating docks for Dock C will consist of timber decking and
framing on polytub flotation pontoons (i.e. – foam core fully encapsulated by polyethylene
cladding). The new docks will be accessed via an existing floating timber dock.
Dock C includes a total of 5,611 sf of new floating timber docks, which will be anchored
via a maximum of 40 piles (see subsequent discussion regarding piles).
Pile Considerations
The number of piles indicated in the previous sections and used to calculate direct impact
represent the maximum number of piles anticipated to be required for the various
structures/docks based upon conservative assumptions.
As is typical within the recreational marina industry, the final design of the floating dock
systems (including the required number, size, and type of piles) will be completed by the
selected dock manufacturer based upon their proprietary design. The dock manufacturer
will be selected via a competitive bidding process which will be initiated upon receipt of
regulatory authorizations, including the NRPA approval.
Since the specific number, size, and type of piles cannot be known at this time, a maximum
number of piles has been determined via development of a conservative pile plan (Sheet 5
of the Permit Drawings). In practice, the total number of piles is expected to be less than
the totals indicated herein.
While specific pile sizes and types are not known at this time, the following summarize the
anticipated pile types and sizes based on conservative assumptions:
• Shoreward Extension of Existing Fixed Pier: Timber piles 12” -18” in diameter ,
noting that these will be supported on a concrete footing and will not require pile
driving. A 2’ wide concrete footing will be considered when calculating direct
intertidal impact (116 sf).
• Gangway Access Platform: Assume timber piles 12” in diameter.
6 piles@1 sf/ea=6 sf direct impact.
• Floating Concrete Docks (Dock A): Assume steel pipe piles 16” diameter.
55 piles@1.4 sf/each= 77 sf direct impact
• Floating Concrete Attenuation Docks (Dock A): Assume steel pipe piles 20”
diameter. 20 piles@2.2 sf/ea= 44 sf direct impact
• Floating Concrete Docks (Dock B): Assume steel pipe piles 16” diameter.
55 piles@1.4 sf/each= 77 sf direct impact
Remove 9, 12” wood piles 9 sf
Net impact = 68 sf
• Floating Timber Docks (Dock C): Timber piles 12” in diameter
40 piles@1 sf/ea=40 sf direct impact
Additionally, the following Best Management Practices (BMPs) will be encouraged and/or
required for all pile driving activities:
• Contractor shall use cushion blocks or other noise attenuation devices when using
an impact hammer.
• Contractor shall use a “soft start” for a pile driving activities (i.e. - driving does not
occur at full power at first).
Dredging
Dredging will be required to accommodate the increased size and number of vessels that
will be utilizing the facility. The dredge plan (Sheet 15-17 of the Permit Drawings) was
developed to minimize the total volume of dredging required while maximizing the
operational efficiency and safe navigation for visiting vessels. Tomorrow
Proposed dredge depths are indicated in the Permit Drawings and range from -6’ to -13’
relative to Mean Low Water (MLW). The proposed dredge plan results in a total of
approximately 12,520 cy of excavation encompassing and area of approximately 138,000
sf or 3.2 acres.
Coastal Wetland Impacts
The impacts associated with existing improvements and proposed improvements are
summarized below:
Coastal Wetland Impact
Direct
Indirect
Year
Structure Description
Sub-Tidal(sf)
Intertidal(sf)
Sub-Tidal(sf)
Intertidal(sf)
Notes:
2000
Breakwater restoration, Pier, and Dredge
(2000)
1068
1
2008
Boat House Conversion
0
2
2010
Some Floats and Piles added
16
3211
3
2021
Pilings
235
4
Floats (Docks A, B, and C)
23,880
Access Pier and Ramp Dock A
672
Landward extension of pier w/footings
116
205
5,6
Existing Impact Totals
1084
3211
Proposed 2021 Impact Totals
235
116
23880
877
Cumulative Direct/Indirect Impact Total
1435
27968
1
Include a combination of sub-tidal and tidal (amounts unknown)
2
All work adjacent to the resource, 1386 sf
3
Note: 65 sf of direct and 13,160 sf of indirect impact were approved in 2010
4
244 sf of impact from proposed piles less 9 sf of replaced piles in Dock B. Net 235 sf
5
660 sf of the proposed pier extension adjacent to the coastal wetland in area of existing riprap
6
All impact is on a previously placed riprap revetment
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