HomeMy WebLinkAbout20170537 Ver 2_BPDP - DWR Comments_20170728Bank Parcel Development Plan
Hannah Bridge Mitigation Site
Johnston County, North Carolina
Neuse River Basin
HUC 03020201
Prepared By:
or^,s
Bank Sponsor: EBX-Neuse I, LLC,
302 Jefferson Street, Suite 110
Raleigh, NC 27605
919-829-9909
May 2017
Hannah Bridge Parcel Development Plan
Buffer/Nutrient Offset Site i May 2017
Table of Contents
1 INTRODUCTION....................................................................................................................... 43
1.1 Parcel Location......................................................................................................................43
1.2 Parcel Overview....................................................................................................................
43
2 PROJECT AREA — EXISTING CONDIf IONS ........................................................................54
2.1 Physiography.........................................................................................................................
54
2.2 Soils.......................................................................................................................................54
2.3 Vegetation.............................................................................................................................
76
2.4 Wetlands................................................................................................................................76
2.5 Threatened and Endangered Species......................................................................................
8-7
2.6 Environmental and Cultural Constraints.................................................................................98
2.7 FEMA Floodplain/Floodway Mapping...................................................................................98
3 RESTORATION PLAN..............................................................................................................98
3.1 Riparian Restoration Activities..............................................................................................
98
3.2 Planting Plan........................................................................................................................101
3.3 Easement Boundaries and Fencing.......................................................................................
109
4 MONITORING AND MAINTENANCE PLAN......................................................................101
4.1 Monitoring Protocol and Success Criteria............................................................................
109
4.2 Adaptive Management Plan...............................................................................................
1110 '
4.3 Long Term Management Plan............................................................................................
1110
r�
5 FINANCIAL ASSURANCE....................................................................................................1110
6 MITIGATION POTENTIAL.................................................................................................1211
7 REFERENCES........................................................................................................................1441
APPENDIX
Appendix A— Supporting Figures
Figure 1. Project Vicinity Map
t
Figure 2. USGS Topographic Map
i ure 3. National Wetlands Inventory Map
Figure 4. Historical Aerial Photography
Figure 5. Soils Map
Figure 6. FEMA Map
'
Figure 7. Existing Conditions
Figure G FEMA Map
� I
figure 8 (a). Conceptual Design Plan for Mitigation Site
Figure 8 (b). Conceptual Design Plan for Wetland Restoration/Enhancement Only Figure 9. (a).
Credit Determination Map for Mitigation Site
Figure 9 (,b). Credit Determination Map for Riparian Welland Restoration/Enhancement OnlyT_
J'
Figure 10. Service Area Map
Figure 11. Proposed locations of Plots for Buffer, Nutrient Offset and Riparian Wetlands.
Figure Q Conceptual Design Plan
Hannah Bridge Parcel Development Plan
Buffer/Nutrient Offset Site ii May 2017
Commented [MK1]: Shows streams in "blue" that should be
"ditches" per the stream determination letter by DWR
i
f Commented [MK2]: Shows streams in "blue" that should be
"ditches" per the stream determination letter by DWR
Commented [MK3]: *do not use this table to show credits
*clarify the Legend a little: add the widths beside each mitigation
type (this may be the table you need to include with your Stream &
Wetland Mit Plantoo.
*Ditch entering between HBO and HB4 isn't labeled "ditch" or
"stream". Please label "ditch"
*are ditches that are labeled black on map going to remain or be
removed/
•TH3 —this feature was determined to be intermittent at the DWR
flag, but RES is showing it as a stream all the way to the easement
break. And, itis straight, just as it was in the field. If RES isn't
performing any stream restomtion/enhancement on the ditch, then
RES needs to modify their credit type to be just nutrient offset and
not buffer restoration.
Commented [ MK4]: Just use this map to show credit
determinations (move table from Figure 8 to this one).
*add credit generation table to reflect comments on table in section
6.0
*it is difficult to determine in Figure 8 in some areas, which feature
the nutrient and buffer credits are being generated off of. Please add
a line splitting the 0- 100' from the 101-200' so that it's easy to
decipher where these widths are and what features the credits are
being generated off of.
*The USACE needs to know if RES is seeking other types of
mitigation credits beyond the 50' required for stream, if they intend
to use wider widths to generate more stream credit. If RES intends
to do this, they need to inform the USACE/IRT.
Commented [MK5]: I ask for this, because only the areas that
have performance standards by the USACE can be suitable for
removing from the ledgers down the road. Therefore, since Wetland
Preservation doesn't have performance standards, no wetland credits
generated from that acreage can be converted into buffer credit and
transferred to the buffer ledger to comply with the USACE's current
policy on this. I need RES to show where the Wetland Preservation
Area (with acreage) are and where the Restomtion/Enhancement
Areas are (with acreage) Leave out the buffer/nutrient offset on this
map you prepare. Only provide wetland areas that fall within the 0-
100' and 101-200'.
Appendix B- Correspondence
Appendix C- Conservation Easement and Plat
Appendix E — Existing Conditions Photos (Month XX, 017 — Commented [MK6]: Submit current photos of ag Selds and
streams at tune of BPDP final submittal,
Hannah Bridge Parcel Development Plan
Buffer/Nutrient Offset Site iii May 2017
1 tNTRODUCTIOIV Commented [MK7]: Provide the SAW #for the Stream and
Wetland Bank
EBX—Neuse I, LLC (EBX), an entity of Resource Environmental Solutions (RES), is pleased to provide
this Bank Parcel Development Plan (BPDP) for the Hannah Bridge Riparian Buffer and Nutrient Offset
Mitigation Bank ("Parcel"). This Parcel is designed to provide riparian buffer and nutrient offset
mitigation credits for unavoidable impacts due to development within the Neuse River Basin, United
States Geological Survey (`USGS') 8 -digit Hydrologic Unit Code (HUC — 03020201). In addition, it
will also provide nutrient offset credits in the 03020201 HUC, excluding the Falls Lake Watershed, for
existing and proposed development requiring such mitigation. This BPDP is in accordance with the
Consolidated Buffer Mitigation Rule 15A NCAC 02B .0295 and 15A NCAC 0213.0240 as well as the
Hannah Bridge Mitigation Banking Instrument for Riparian Buffer Mjtigation and Nutrient Offset
Credits, made and entered into by EBX-Neuse I, LLC acting as the Bank Sponsor (Sponsor), and the
North Carolina Department of Environmental Quality (NCDEQ) on . Supporting figures
can be found in Appendix A. The BPDP has also been designed in concurrence with the Hannah Bridge
Stream and Wetland Mitigation Bank. The mitigation plan for the Hannah Bridge Stream and Wetland
Mitigation Bank has been submitted and approved by the Interagency Review Team.
1.1 Parcel Location
The Parcel is located in Johnston County approximately five miles south of the town of Four Oaks, NC
(Figure 1). The Parcel is located within Neuse River Basin USGS 14 -digit HUC 03020201150020 and
North Carolina Division of Water Resources (NC DWR) Subbasin Number 03-04-04.
To access the Parcel from the town of Four Oaks, travel South on NC Hwy 96 and turn left on Green
Pasture Road. The coordinates of the site are 35.380025°N and -78.417046 °W.
1.2 Parcel Overview I
The Parcel easement totals 46.2 acres and includes unnamed tributaries, and stormwater runoff from
adjacent pastures that flow directly to Hannah Creek. The drainage area of the Parcel is 1.39 mil. The
Parcel is located in an area dominated by agriculture, livestock, and residential land use. A majority of
the Parcel is utilized for livestock pasture. Additional land use practices including the maintenance and
removal of riparian vegetation and the relocation and the dredging and straightening of onsite streams
has resulted in degraded water quality and unstable channel characteristics.
The Hannah Bridge Mitigation Site is proposed to provide stream restoration and enhancement on
approximately 8,524 linear feet of streams and wetland restoration, enhancement, and preservation on
16.7 acres of wetlands within the conservation easement through a separate mitigation banking
instrument. Figure 7 shows the existing stream channel and wetland boundary and Figure 8 shows the
proposed stream and wetland mitigation areas for the stream and wetland mitigation bank. Restoration
of the riparian buffer is anticipated to result in immediate water quality benefits within the vicinity of the
Parcel through the removal of livestock access to Parcel streams. The riparian restoration activities
within the Parcel will also result in improved water quality within the downstream watershed.
Hannah Bridge Parcel Development Plan
Buffer/Nutrient Offset Site 4 May 2017
Commented [MK8]: *Clarify here, if anything proposed beyond
50' is intended to be restored for anything but buffer & nutrient
credit. (stream?? )
*add some clarity so that when one reads this section, they get a
feeling for what all this mitigation site will be used for.
How many acres buffer restoration dedicated to Buffer Only?
How many acres dedicated to Buffer Enhancement & Preservation?
How many acres dedicated to Nutrient Offset?
How many acres of buffer restoration dedicated to buffer are also
viable to generate NOC if ever requested?
How many acres of Wetland Mitigation total?
How many acres of proposed wetland mitigation TOTAL
How many acres of wetland credit would be viable to be transferred
into buffer down the road if requested? This needs to be discussed
with the IRT before RES proposes any wetland acreas for this plan.
How much linear feet of stream is being mitigated? (don't care
about the credit amounts)
The project area is comprised of two separate easement locations along multiple drainage features that
flow into Hannah Creek. The northern easement area captures a single tributary to Hannah Creek and a
portion of its headwaters. The southern easement area is separated from the northern area by an active
agricultural field, and is divided into three different areas due to a utility crossing and a culvert crossing.
The northern portion of the project contains Reach TH3, while the southern portion is comprised of
Reaches HBI, 11132, 11133, HB4, HFI, and 11172. Stream determinations have been verified by NCDWR
staff during a site visit on April 8, 2015 (Appendix B).
The Parcel is being proposed to restore, enhance, and preserve stream systems with their adjacent
riparian buffers and their functions and values to compensate in appropriate circumstances for
unavoidable stream and riparian buffer impacts and nutrient load reduction requirements. The
buffer mitigation plan proposed on this Bank is being submitted for review under the
Consolidated Buffer Mitigation Rule 15A NCAC 02B .0295, as well as conditions specified in the
Hannah Bridge Riparian Buffer and Nutrient Offset Mitigation Banking Instrument.
2 PROJECT AREA — EXISTING CONDITIONS
2.1 Physiography
The Parcel is in the Coastal Plain Physiographic Province. Soils in the Coastal Plain region formed in
sediment deposits several millions of years ago by the ocean and streams; however, the floodplains
along the Neuse River consist of fairly recent deposits. These deposits are not as weathered as the
sediments in the Coastal Plain region. The site is located on the Hannah Creek floodplain and has a
gently rolling topography (Figure 2). Five unnamed tributaries on The Hannah Bridge Bank Parcel as
well as overland flow of stormwater drain into Hannah Creek just downstream of the Parcel. Natural
drainage patterns throughout the watershed have been altered by cultivation and dredging of the
channels. Within the proposed mitigation area, the channels drain surface water and groundwater from
the surrounding agricultural practices.
2.2 Soils
The Site is located in the Coastal Plain Physiographic Province. The soils within the Coastal Plain region
of Johnston County formed in sediments deposited several million years ago by the oceans and streams.
The flood plains along the Neuse River consist of relatively recent deposits of sediments that are not as
highly weathered as sediments in the Coastal Plain Region. Much of the county is well drained;
however, several areas are poorly drained.
The Johnston County Soil Survey shows several mapping units across the site. Map units include seven
soil series (Figure 5). The soil series found on the site are described below and summarized in Table 1.
Goldsboro sandy loam. This is a very deep, moderately drained soil found on uplands of the Coastal
Plain. Soils formed in fluviomarine deposits, and generally occur on slopes between 0-10%. Runoff is
negligible to medium and permeability is moderate. Major uses are cropland. Goldsboro sandy loams
occur along the stream near the middle of the proposed conservation easement.
Lynchburg sandy loam. This is a very deep, somewhat poorly drained soil that occurs on terraces and
flats of the Coastal Plain. They formed in fluviomarine deposits, and generally occur on slopes between
Hannah Bridge Parcel Development Plan
Buffer/Nutrient Offset Site 5 May 2017
0-5%. Runoff is negligible and permeability is moderate. Major uses are cropland, pasture, and forest.
Lynchburg sandy loam occurs along the stream near the middle of the easement almost opposite of the
Goldsboro sandy loam.
Bibb sandy loam. This is a very deep, poorly drained soil found on flood plains of the Coastal Plain.
Slopes are generally less than 2%. Soils formed in stratified sandy alluvium and have very slow runoff
with moderate permeability. The water table is generally within 8 inches of the surface for 6 to 11
months of the year. Bibb sandy loams occurs along the majority of the easement around the stream.
Gilead sandy loam. This is a very deep, moderate to well drained soil that occurs on ridges and terraces
of the Coastal Plain. They formed in clayey marine deposits, and generally occur on slopes between 2-8
%. Runoff is medium and permeability is moderate. Major uses are cropland. Gilead sandy loam
occurs within the South most wetland and southern end of the tributary inside of the proposed
conservation easement.
Rains sandy loam. This is a very deep, poorly drained soil that occurs on crests of the Coastal Plain.
They formed in Loamy and sandy marine deposits, and generally occur on slopes between 2-6 %.
Runoff is low and permeability is moderate. Major uses are cropland. Rains sandy loam occurs within
the North most wetland inside of the proposed conservation easement.
Uchee loamy course sand. This is a very deep, well -drained soil that occurs on flats and depressions of
the Coastal Plain. They formed in fluviomarine deposits, and generally occur on slopes between 0-2 %.
Runoff is negligible and permeability is moderate. Major uses are forest and cropland. Uchee loamy
sand occurs within the south wetland inside of the proposed conservation easement.
Altavista Sne sandy loam. This is a very deep, moderately to well -drained soil that occurs on stream
terraces of the Coastal Plain. They formed in old loamy alluvium derived from igneous and
metamorphic rock, and generally occur on slopes between 0-3 %. Runoff is negligible and permeability
is moderate. Major uses are cropland. Altavista fine sandy loam occurs along the east boundary of the
proposed easement in wetland/stream area.
Table 1. Parcel Mapped Soil Series
Map
Percent
Drainage
Hydrologic
Landscape
Unit
Map Unit Name
Hydric
Class
Soil Group
Setting
Symbol
GoA
Goldsboro sandy
2o
��
Moderately
B
Flats, Marine
loam, 0 — 2% slopes
well
Terraces
Ly
Lynchburg sandy loam
6%
Somewhat
C
Flats, Marine
poorly
Terraces
Bb
Bibb sandy loam,
90%
Poorly
D
Floodplains
frequently flooded
Ra
Rains sandy loam
90%
Poorly
B/D
Flats, Marine
Terraces
Hannah Bridge Parcel Development Plan
Buffer/Nutrient Offset Site 6 May 2017
Map
Percent
Drainage
Hydrologic
Landscape
Unit
Map Unit Name
Hydric
Class
Soil Group
Setting
Symbol
Broad interstream
UcB
Uchee loamy coarse
0%
Well
C
divides on marine
sand
terraces, ridges on
marine terraces
GeB
Gilead sandy loam
0%
Moderate/Well
C
Marine terraces
AaA
Altavista fine sandy
9%
Moderate/Well
C
Stream Terraces
loam
2.3 Vegetation
Current land use in the vicinity of the project is primarily agriculture and forest. Common species
include red maple (Acer ruhrum), tulip poplar (Liriodendron tulipifera), sweetgum (Liquidamhar
styraciflua), and swamp tupelo (Nyssa hiflora). Invasive species are widespread throughout the majority
of the project area, most notably Chinese privet (Ligustrum sinense) and multiflora rose (Rosa
multiflora).
Riparian Restoration
Vegetation along the top of Reach HBI is active cattle pasture with pockets of common rush (Juncus
effusus) throughout the hydric areas. The left banks of 11133 and HB4 are also active cow pasture with
common rush and other disturbed herbaceous vegetation. There is no tree or sapling stratum in these
areas. Reaches THl, TH2, and TH3 are also active pasture, but have sparse tree cover. Reaches HB2
and 11171 are characterized as bottomland hardwood forests, that vary from functional to disturbed based
on the degree of cattle access. Cattle do not have access to the streams from the southern parcels,
therefore the riparian buffer along the right bank of 11132 and the entirety of Reach HE 1 is in much better
condition with a full tree canopy. The confluence of HB4 and Hannah Creek at the downstream end of
the project is a cypress -gum swamp community with a fully developed canopy, but lower stem density
than seen in the other wooded reaches of the project. This area is dominated by swamp tupelo and bald
cypress (Taxodium distichum). Japanese stiltgrass (Microstegium vimineum) is very common throughout
the understory. Detailed observations of vegetation species, soils, and hydrology were recorded in each
community type.
2.4 Wetlands
The USFWS National Wetland Inventory Map (NWI) depicts three wetland areas within the site (Figure
3). A Freshwater Pond (PUBHh) is mapped within the mid -western part of the easement, a Freshwater
Forested/Shrub Wetland (PFO IQ runs along 11134 in the northeastern part of the easement, and a
Palustrine, Forested, Broad -Leaved Deciduous Wetland (PFO IF) is located in the eastside of the
northern most portion of the easement.
A wetland delineation was performed in May 2016. Wetland boundaries were delineated using current
methodology outlined in the 1987 U.S. Army Corps of Engineers Wetland Delineation Manual (DOA
1987) and Regional Supplement to the U.S. Army Corps of Engineers Wetland Delineation Manual:
Atlantic and Gulf Coastal Plain Region (Version 2.0) (U.S. Army Corps of Engineers 2010). Soils were
characterized and classified using the Field Indicators of Hydric Soils in the United States, Version 7.0
Hannah Bridge Parcel Development Plan
Buffer/Nutrient Offset Site 7 May 2017
(USDA-NRCS 2010). Wetland boundaries were marked with sequentially numbered wetland survey
tape (pink/black striped). The jurisdictional wetland boundaries are depicted on Figure 7.
Jurisdictional wetlands are present throughout the site. The wetlands are divided between heavily
disturbed and functional. The wetland mitigation treatment will include planting pastures as forested
wetlands, excluding livestock, and hydrologic uplift from grading out small ditches/swales and the
adjacent stream restoration. A notification of jurisdictional determination was received on USACE on
August 12, 2016.
2.5 Threatened and Endangered Species
The US Fish and Wildlife Service (USFWS) database lists four endangered species for Johnston County,
North Carolina: red -cockaded woodpecker (Picoides borealis), Tar River spinymussel (Eliptio
steinstansana), dwarf wedgemussel (Alasmidonta heterodon), and Michaux's sumac (Rhus michauxii).
No protected species or potential habitat for protected species was observed during preliminary site
evaluations. RES submitted a request to USFWS for review and comments on the proposed Hannah
Bridge Mitigation Project on April 8, 2016 in regards to any potential impacts to threatened and
endangered species. A response from the USFWS received on May 5, 2016 stated that "the proposed
project is not likely to adversely affect and federally -listed endangered or threatened species, their
formally designated critical habitat, or species currently proposed for listing under the Act."
Documentation is included in Appendix B.
Table 2. Federally Protected Species in Johnston County
Common Name
Scientific name
Federal
Status
Habitat
Present
Record
Status
Vertebrate:
Red -cockaded woodpecker
Picoides borealis
E
No
Current
Bald eagle
Haliaeetus leucocephalus
BGPA
Yes
Current
Invertebrate•
Tar River spinymussel
Eliptio steinstansana
E
No
Current
Dwarf wed emussel
Alasmidonta heterodon)
E
No
Current
Vascular Plant:
Michaux's Sumac Rhus Michauxii E No Current
E = Endangered; BGPA = Bald and Golden Eagle Protection Act
Hannah Bridge Parcel Development Plan
Buffer/Nutrient Offset Site 8 May 2017
2.6 Environmental and Cultural Constraints
A review of the North Carolina State Historic Preservation Office GIS Web Service database revealed
that there are National Registered listings within a one -mile radius of the proposed project area. No
architectural structures or archeological artifacts have been observed or noted during preliminary
surveys of the site for restoration purposes. RES submitted a request to the NC State Historic
Preservation Office (SHPO) to search records to determine the presence of any areas of architectural,
historic, or archaeological significance that may be affected by the Hannah Bridge Mitigation Site on
April 8, 2016. In a letter dated April 4, 2016 the SHPO stated that they had "conducted a review of the
project and are aware of no historic resources which would be affected by the project." Correspondence
is provided in Appendix B.
2.7 FEMA Floodplain/Floodway Mapping
Reaches H133 and HB4 are located within the FEMA 100 -year floodplain (Zone AE) of Hannah Creek,
and approximately 200 feet of the downstream end of Reach HB4 is located within the FEMA floodway.
However, no grading or construction activities are proposed along the portions of the project located
within the FEMA floodway. Therefore, it is not anticipated that a No -rise or CLOMR will be required
for the project. Hydrologic trespass is a not a concern for this project. While designing the Hannah
Bridge project, appropriate measures were taken to eliminate hydrologic trespass of the adjacent
agricultural fields and animal operations. The adjacent land use will not be affected by the proposed
design, and no detrimental impacts are expected beyond the easement limits.
3 RESTORATION PLAN
3.1 Riparian Restoration Activities
Riparian restoration adjacent to streams 14131, HB2, 11133, H134, HFI, HF2, and TH3 shown in Figures 7
and 8, was approved by the DWR letter dated June 11, 2015 and attached in Appendix B. The
restoration of plant communities within the Parcel will not only provide stabilization and improve water
quality within the easement limits, but also provide ecological benefits to the entire watershed.
Vegetation within riparian buffers can vary depending on disturbance regime and adjacent community
types, so the protected buffer easement will be planted with appropriate native species observed in the
surrounding forest and species known to occur in similar environments. All riparian restoration activities
will commence in concurrence with the stream mitigation activities and not before. Therefore, the
mitigation area where riparian restoration is being performed may be altered slightly depending on the
approval of the Stream Mitigation Plan for the Stream Mitigation Bank. The riparian restoration areas
will be surveyed and information provided in the As -Built report.
The current land use adjacent to the majority of the streams on the Bank Parcel is pasture. Livestock will
be excluded from restoration areas by fencing installed to NRCS specifications. The Neuse buffer areas
will be planted from top of bank back at least 50' from the stream with bare root tree seedlings on an 8
by 8 foot spacing to achieve an initial density of 680 trees per acre. The buffered channels will provide
water quality and habitat functions within the sensitive Neuse River watershed. Some areas adjacent to
the forested areas may require maintenance due to the rapid regeneration of some species. Rapidly
regenerating species and invasive species may develop greater individual species density and create a
less diverse mix. Minimal maintenance is anticipated due to the past cultivation history.
Hannah Bridge Parcel Development Plan
Buffer/Nutrient Offset Site 9 May 2017
3.2 Planting Plan
Revegetation of the site will include treating invasive species growth and planting at least four native
hardwood bare root trees planted at a density to ensure 260 stems per acre at the completion of
monitoring. No one tree species will e greater than 50% of the established stems. Coastal Plain Small
Stream Swamp will be the target community type and will be used for all areas within the project. The
community is defined by Schafale and Weakely (1990). The initial planting of bare root trees will occur
in Spring 2018 or during stream restoration work (whichever comes last). Tree species specified for
planting on the Hannah Bridge Site are shown in Table 3.
Table 3. Hannah Bridge Site Tree Planting List
Common Name
Scientific Name
Indicator
Growth Rate
River Birch
Betula nigra
FACW
ra id
Willow Oak
Quercus phellos
FACW
rapid
Swamp Chestnut Oak
Quercus michauxii
FACW
moderate
Water Oak
Quercus nigra
FAC
rapid
American Sycamore
Platanus occidentalis
FACW
rapid
Swamp Tupelo
Nyssa hiflora
OBL
moderate
Overcup Oak
Quercus lyrata
OBL
moderate
Bald Cypress
Taxodium distichum
OBL
rapid
3.3 Easement Boundaries and Fencing
Easement boundaries will be identified in the field to ensure clear distinction between the Parcel and
adjacent properties. Boundaries may be identified by cattle fence, marker, bollard, post, tree -blazing, or
other means as allowed by site conditions and/or conservation easement. Boundary markers disturbed,
damaged, or destroyed will be repaired and/or replaced on an as needed basis. The easement boundary
will be checked annually as part of monitoring activities and the conditions as well as any maintenance
performed will be reported in the annual monitoring reports to NC DWR.
4 MONITORING AND MAINTENANCE PLAN
4.1 Monitoring Protocol and Success Criteria
Riparian buffer vegetation monitoring will be based on the CVS-EEP Protocol for Recording
Vegetation Level 1-2 Plot Sampling Only Version 4.0. Annual vegetation monitoring will occur each
year during the fall season with the first year occurring at least 5 months from initial planting. As part of
the stream mitigation plan, twenty-five (25) vegetation monitoring plots will be installed a minimum of
100 mZ in size, and will cover at least two percent of the planted mitigation area. Eight (8) of these plots
will be located in buffer/nutrient offset areas. The following data will be recorded for all trees in the
plots: species, height, planting date (or volunteer), and grid location_ The measures of vegetative success
for the Parcel will be the survival of at least 4 native hardwood tree species, where no one species is
greater than 50% of the established stems, established at a density of at least 260 planted trees per acre at
the end of Year 5. Native volunteer species may be included to meet the performance standards. Invasive
and noxious species will be monitored and treated so that none become dominant or alter the desired
community structure of the site. Initial plant maintenance may include a one-time mowing, prior to
initial planting to remove undesirable species. If mowing is deemed necessary by EBX during the
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Buffer/Nutrient Offset Site 10 May 2017
monitoring period, EBX must receive approval by the DWR prior to any mowing activities to ensure that
no buffer violations have been performed. Failure to receive approval to mow within the Neuse buffer,
as defined in 15A NCAC 02B .0233, by the DWR could result in Neuse buffer violations and violations
of the conservation easement. If necessary, EBX will develop a species-specific treatment plan.
4.2 Adaptive Management Plan
In the event that the site, or a specific component of the site, fails to achieve the defined success criteria,
RES will develop necessary adaptive management plans and/or implement appropriate remedial actions
for the site in coordination with the NC DWR. Remedial actions will be designed to achieve the success
criteria specified previously, and will include identification of the causes of failure, remedial design
approach, work schedule, and monitoring criteria that will take into account physical and climatic
conditions.
4.3 Long Term Management Plan
EBX Neuse I, LLC, (EBX) acting as the Bank Sponsor, will record a Conservation Easement with the
Johnston County Register of Deeds Office. EBX will monitor the Site for a minimum of five years, or
until NC DWR approval. Riparian restoration outside of the mitigation area for buffer and nutrient offset
credits will be monitored in accordance with the monitoring protocol in the Selma Stream Mitigation
Plan. This BPDP provides detailed information regarding bank operation, including long term
management and annual monitoring activities, for review and approval by the NC DWR. The
Conservation Easement has been assigned to The North Carolina Wildlife Habitat Foundation
(NCWHF). All monitoring activities, including periodic inspections of the site to ensure restrictions
required in the Conservation Easement are upheld, are the responsibility of EBX until the Parcel is
transferred to the NCWIIF. Endowment funds required to uphold the Hannah Bridge Bank Parcel
easement in perpetuity shall be negotiated prior to site transfer to the NCWHF.
The Bank Sponsor has ensured that the Conservation Easement allows for the implementation of an
initial monitoring phase, which will be developed during the design phase and conducted by the Bank
Sponsor. The Conservation Easement will allow for yearly monitoring and, if necessary, maintenance of
the Site during the initial monitoring phase. These activities will be conducted in accordance with the
terms and conditions of the Hannah Bridge Riparian Buffer and Nutrient Offset Mitigation Banking
Instrument made and entered into by EBX-Neuse I, LLC and NC DWR.
5 FINANCIAL ASSURANCE
The Sponsor will provide financial assurances in the form of Performance Bonds sufficient to assure
one -hundred percent (100%) completion of all mitigation work, required reporting and monitoring, and
any remedial work required. Financial assurances will be payable at the direction of the NC DWR to its
designee or to a standby trust. Financial assurances structured to provide funds to the NC DWR in the
event of default by the Bank Sponsor are not acceptable. The initial performance bond will be in the
amount of at least $150,000 and shall be able to cover 100% of the costs associated with construction of
the riparian restoration areas. The monitoring bond shall be in the amount of at least $100,000 and shall
be able to cover 100% of the costs associated with the monitoring and maintenance of the riparian
restoration areas for five years.
Hannah Bridge Parcel Development Plan
Buffer/Nutrient Offset Site 11 May 2017
6 MITIGATION POTENTUL
The Hannah Bridge Site presents 46.2 acres of permanent conservation easement in Johnston County,
North Carolina. While this easement also encompasses areas for the Hannah Bridge Stream Mitigation
Bank, the purpose of the Hannah Bridge Riparian Buffer and Nutrient Offset Mitigation Bank is to
generate Neuse riparian buffer mitigation and nutrient offset. Once finalized, a conservation easement
and final recorded plat will be provided in Appendix C.
The width of the buffer/nutrient credit generation area will begin at the most landward limit of the top of
bank or the rooted herbaceous vegetation and extend landward to a maximum distance of 200 feet.
These rules are in accordance with Rule 15A NCAC 02B.0295; buffer preservation credits meet the
requirements described in Paragraph (m) subparagraph (2) (D) - Alternative Buffer Mitigation Options -
Preservation of Buffers on Subject Streams. According to the MBI, the generated nitrogen offset credit
per acre in the Neuse River watershed is 2,273.02 pounds per acre.
This Parcel has the potential to generate approximately 5.09 acres of riparian buffer restoration credits,
0.48 acres of riparian buffer enhancement credits, 1.85 acres of riparian buffer preservation credits, and
4.25 acres of nutrient offset credits. The riparian buffer mitigation credits generated will service Neuse
Buffer impacts within the USGS 8 -digit HUC 03020201 of the Neuse River Basin. The Nitrogen
nutrient offsets generated will service nutrient load reduction requirements where payments are
authorized in 15A NCAC 02B .0240 within the USGS 8 -digit HUC 03020201, excluding the Falls Lake
Watershed. The total potential mitigation credits that the Hannah Bridge Bank will generate are
summarized in Table 4; Figure 8.
Table 4. Proposed Mitigation Credits
Hannah Bridge Parcel Development Plan
Buffer/Nutrient Offset Site 12 May 2017
Buffer Credit
Zone
Credit Type
Acreage
Credit Per Acre (sq ft)
Ratio
Mitigation Assets (sq ft)
Buffer Restoration
5.09
43,560
1:1
221,720
0-100'
Buffer
Enhancement
0.24
43,560
2:1
5,227
Buffer Preservation
1.46
43,560
10:1
6,360
Buffer Restoration
N/A
N/A
N/A
N/A
101-
200'
Buffer
Enhancement
0.24
43,560
6:1
1,742
Buffer Preservation
0.39
43,560
30:1
566
TOTAL
7.42
235,616
Nutrient Credit
Zone
Credit Type
Acreage
Credit Per Acre (lbs)
Ratio
Mitigation Assests (lbs)
0-100'
Nitrogen
1.06
2,273.02
N/A
2,409.40
101-
200'
Nitrogen
3.19
2,273.02
N/A
7,250.93
TOTAL
4.25
9,66034
Hannah Bridge Parcel Development Plan
Buffer/Nutrient Offset Site 12 May 2017
The Sponsor may use the 5.09 acres (221,720.00 ftZ) of riparian restoration areas for either Neuse buffer
credits or Nitrogen nutrient offset credits, but not both. The Sponsor must submit a written request and
receive written approval from DWR prior to any credit conversions and transfers to the buffer and
nutrient offset credit ledgers. With each conversion and transfer request submitted to the DWR, the
Sponsor will provide all updated credit ledgers showing all transactions that have occurred up to the date
of the request.
Available wetland mitigation credits (credits that have been released by the ACOE but not sold by the
Sponsor) that are generated from restoration, or enhancement within the riparian areas (top of bank —
200') adjacent to the streams on this Bank Parcel, and comply with 15A NCAC 02B .0295, may be
converted and transferred from wetland mitigation credits to Riparian Buffer Credits upon written
approval from the DWR.
Hannah Bridge Parcel Development Plan
Buffer/Nutrient Offset Site 13 May 2017
7 REFERENCES
NCDENR. 2009. "Neuse River Basinwide Water Quality Plan." Division of Water Quality. http://
http://portal.ncdenr.org/web/wq/ps/bpu/basin/neuse/2009. (October 2013).
NCDENR. 2010. 'N.C. Wetland Assessment Method User Manual Version 4.1." N.C. Wetland
Functional Assessment Team.
NC Environmental Management Commission. 2014. Rule 15A NCAC 02B.0295 - Mitigation Program
Requirements for the Protection and Maintenance of Riparian Buffers.
Schafale, M.P. and A.S. Weakley. 1990. Classification of the Natural Communities of North Carolina,
Third Approximation. North Carolina Natural Heritage Program, Division of Parks and Recreation,
NCDENR, Raleigh, NC.
Hannah Bridge Parcel Development Plan
Buffer/Nutrient Offset Site 14 May 2017