20211505 Ver 1_Appendix G PRMP w Attachements_20211122

HEDRICK GRAVEL & SAND CO -LAKE NORMAN
QUARRY MINE EXPANSION
PERMITTEE-RESPONSIBLE
MITIGATION PLAN
NOVEMBER 2021
PREPARED FOR:
Ms. Krystynka Stygar
U.S. Army Corps of Engineers, Wilmington District,
2407 West 5th Street, Washington, NC 27889
Ms. Sue Homewood
Department of Environmental Quality
Division of Water Resources, Winston Salem Regional Office
450 W. Hanes Mill Rd, Suite 300
Winston Salem NC 27105
PREPARED BY:
CIVIL & ENVIRONMENTAL CONSULTANTS, INC.
CHARLOTTE, NORTH CAROLINA
Civil & Environmental Consultants, Inc.
CEC Project 182-803
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CEC Project 183-802
November 2021

TABLE OF CONTENTS
1.0
BASIC INFORMATION...................................................................................................1
2.0
COMPONENTS OF MITIGATION................................................................................3
3.0
PROJECT GOALS............................................................................................................5
4.0
OBJECTIVES....................................................................................................................6
5.0
SITE SELECTION............................................................................................................7
6.0
SITE PROTECTION INSTRUMENT............................................................................8
6.1
BASELINE AND EXISTING CONDITIONS....................................................................
8
6.1.1
Baseline Stream Assessment..............................................................................................8
6.1.2
Natural Resources & Cultural Resources...........................................................................9
7.0
DETERMINATION OF CREDITS...............................................................................10
8.0
DESIGN APPROACH AND MITIGATION WORK PLAN......................................11
8.1
Design Approach................................................................................................................
11
8.1.1
General Work Plan Considerations..................................................................................11
9.0
MAINTENANCE PLAN.................................................................................................14
10.0
MONITORING REQUIREMENTS, PERFORMANCE STANDARDS &
REPORTING...............................................................................................................................15
10.1
MONITORING..................................................................................................................
15
10.1.1
Vegetation Planting and Monitoring Requirements.........................................................16
10.1.2
Planted Vegetation Performance Standards.....................................................................17
10.1.3
Stream Channel Stability and Stream Hydrology Monitoring.........................................18
10.1.4
Stream Channel Stability and Stream Hydrology Performance Standards ......................18
10.1.5
Annual Visual Monitoring................................................................................................19
10.1.6
Stream NCSAM & NCWAM Monitoring.......................................................................19
10.1.7
Monitoring Reporting.......................................................................................................20
10.1.8
Additional Monitoring......................................................................................................21
11.0
LONG-TERM MANAGEMENT PLAN.......................................................................23
12.0
ADAPTIVE MANAGEMENT PLAN............................................................................24
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LIST OF TABLES
Table 1 — Goals and Objectives
Table 2 — Monitoring Schedule
APPENDICES
Appendix G.1 — Site Photographs
Appendix G.2 — Draft Conservation Easement Design
Appendix G.3 — Planting Plan
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1.0 BASIC INFORMATION
Applicable Permits:
- North Carolina Department of Environmental Quality (NCDEQ) Division of Land
Quality Quarry Permit: 955-01.
- SECTION 401 WATER QUALITY CERTIFICATION: Pending review from NCDEQ.
- SECTION 404 OF THE CLEAN WATER ACT (CWA): Pending review from U.S. Army
Corps of Engineers (USACE).
- National Pollutant Discharge Elimination System (NPDES) individual permit
#NCG020097; and
Stormwater General Permits NCG020000: Mining Activities, Effective 7-1-2021, Expires 6-
30-2025.
Applicant: Hedrick Industries Inc. (Lake Norman Quarry)
Contact: Jason Conner, Hedrick Industries Inc, jconner&hedrickind.com, 9828-712-9009
(cell), # 828-686-3844 (office)
Property Owner: Hedrick Industries Inc.
Agent: Civil & Environmental Consultants, Inc. (CEC) is the agent assisting Hedrick Industries
Inc. (Lake Norman Quarry) with the Permittee-Responsible Mitigation (PRM) plan.
Contact: Kevin Thomas, CEC, Inc.; [e-mail], # [phone]
Impact Site: The site is located in the Catawba watershed (Hydrologic Unit Code 903050101-
Catawba) within the Southern Outer Piedmont Environmental Protection Agency (EPA) Level III
Ecoregion 45b. (Latitude: -N: 35 26 08.88, Longitude: -W: 81 01 24.57). Under the Proposed
Action, approximately 3,170 linear feet (ft) of Forney Creek (State Waterbody ID: NC11-119-2-
3) would be impacted (2,848 linear ft would be temporarily impacted and 322 linear feet would be
permanently impacted) and ultimately relocated and restored. The proposed project area footprint
encompasses approximately 11 acres (Figure 4-1.1 Alternative 1 — Northwest Mine Wall
Expansion [Preferred Alternative]).
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Forney Creek is a highly degraded stream, with a low NC Stream Assessment Method (NCSAM)
score and is on the federal and state list of 303d /303e, respectively, streams (Figure 4-1.2 Forney
Creek 303d Stream) (EPA, 2021). The stream is characterized by incision and entrenchment and
currently has an undersized culvert and low head dam that inhibit aquatic passage.
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2.0 COMPONENTS OF MITIGATION
EXECUTIVE SUMMARY
Hedrick Industries is proposing to construct additional subsidiary infrastructure within the current
permitted mine boundary in support of future on -site mine expansion of the Hedrick Gravel &
Sand CO -Lake Norman Quarry (LNQ) Mine. The LNQ Mine is located at 6941 Quarry Lane, off
Hwy 16, approximately one mile south of Hwy 73 in Lincoln County, North Carolina. The
proposed action area footprint encompasses approximately I I acres.
The existing mine pit will would be expanded, laterally, to the northwest ranging from 100 to 300
linear feet (l.f.) allowing the pit floor to be deepened, vertically, by an extra 100 ft from the current
95 feet below the exiting ground surface. The proposed action area footprint encompasses
approximately 11 acres, and would require an estimated 3,170 l.f. of Forney creek (SA-1) to be
relocated (Drawing 1 - Nature of Activity Display). Forney creek is an impaired EPA listed 303d
aquatic resource, characterized by low water quality and highly unstable banks. Within Forney
creek a low head dam is locate along the eastern portion of the purpose action area and would be
removed, and the existing undersized culvert replaced with a bridge span. Stream relocation and
restoration would occur by realigning Forney Creek to a more stable configuration using Natural
Channel Design methodologies, as dictated by the North Carolina Stream Channel Design
National Engineering Handbook 654.
Hedrick is proposing mitigation in the form of Permitee Responsible Mitigation. Please refer to
the Permitee Responsible Mitigation Plan (located in Appendix G). This includes a design that
will relocate Forney Creek away from the LNQ Mine, using Priority 1 and Priority 2 restoration,
and brings the stream invert to the current invert of the low head dam (Drawing 1 - Nature of
Activity Display). Stream relocation and restoration would occur by realigning Forney Creek to a
more stable configuration using Natural Channel Design methodologies, as dictated by the North
Carolina Stream Channel Design National Engineering Handbook 654 (USDA, 2008). Priority 1
restoration techniques would be applied to 2,848 linear ft of the existing stream, while Priority 2
restoration techniques would be applied to the remaining 322 linear feet of stream. Priority 1
restoration within Forney Creek will include establishing bankfull stage at the historical floodplain
elevation, replacing the incised channel with a new, stable stream at a higher elevation. To ensure
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there would be no net loss of habitat, approximately 2,879 linear ft would be restored, creating an
additional 31 linear ft of Priority 1 stream work. Priority 2 restoration would begin where Priority
1 restoration work would end, and extend to the end of the proposed tie in for a total of 160 linear
ft of Priority 2 restoration. Priority 2 restoration will create a new floodplain and stream alignment
with the streambed remaining at the present elevation.
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3.0 PROJECT GOALS
The ultimate goal of the Project is to restore Forney Creek to a self-sustaining stream system.
Forney creek is an impaired EPA listed 303d/303e highly entrenched and unstable stream (EPA,
2021). The water body segment does not meet the applicable water quality standards, due in whole
or in part to discharges of pollutants from point or nonpoint sources. The restored Forney Creek
would increase connectivity with the floodplain and provide increased in -channel habitat for
aquatic species as well as increase riparian habitat quality and diversity. The proposed restoration
would employ a Priority 1 & 2 restoration strategy to engage floodplains, promote wetland
development, and support healthy alluvial processes. The restoration design will enhance aquatic
passage by removing a low head dam located at the upstream portion of the project and improving
an undersized culvert near the downstream end of the project.
The purpose of the Proposed Action is to extend the life of mine (LOM) expectancy and projected
reserve base of the LNQ Mine from 15-25 years, to between 75 -100 years to meet the current
economic production demands of aggregate product. Implementation of the Proposed Action
would increase the LOM expectancy and allow for the safest extraction of aggregate product.
Hedrick Industries would be able to expand the quarry mine using existing lands within the
permitted mine boundary. Existing infrastructure would be utilized to ensure safe extraction of
aggregate product, minimize costs associated with the proposed action (as compared to the other
proposed alternatives), and appease the required site screening criteria as defined in the
Alternatives Analysis Report (Section 4.1, page 14). Finally, the expansion will help achieve the
objectives (as described in Section 3.0 below) of the Proposed Action, in order to extend the LOM
and prevent the depletion of LNQ's projected mine reserve base.
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4.0 OBJECTIVES
Project objectives aim to improve Forney Creek's stream function -based parameters that include
geomorphology, bedform diversity, floodplain connectivity, and riparian vegetation. Proposed
activities that will be implemented to achieve project objectives include:
• Relocate and build a dynamically stable channel along Forney Creek using a
combination of Priority 1 & 2 stream restoration that will maintain or improve
geomorphology parameters.
• Establish a native riparian buffer to increase stream bank stability and nutrient filtration,
and to provide shade and habitat for wildlife.
• Protect streams and riparian zones with a Conservation Easement.
Table 1. Goals and Objectives
Stream
Goals
Objectives
Reduce BHR to 1.2 or less and increase
Maintain and improve
entrenchment ratio range from 3.6 to 6.5 to
floodplain connectivity
ensure long-term stability of the design
reach.
Maintain or improve bedform
Install riffle structures to increase riffle
diversity
length and restore natural pool to pool
Forney Creek
spacing and pool depth ratio.
Maintain or improve lateral
Install in channel habitat consisting of large
stability
woody debris, and in channel structures for
lateral stability.
Maintain and improve
Establish riparian buffers with native
vegetation buffer
vegetation.
-riparian
Establish long term
Protect the sites with the creation of a
protection
Conservation Easement.
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5.0 SITE SELECTION
Site selection for the Proposed Action was determined through a detailed assessment of five on -
site alternatives, and one potential off -site alternative. Under the Alternatives Analysis Report,
eight screening criteria were evaluated against the site screening alternatives. Through an
extensive analysis, it was determined that the Northwest Mine Wall Expansion would result in the
least environmentally damaging practicable alternative (LEDPA). Under this alternative, the LOM
expectancy would increase and allow for the safest extraction of aggregate product. Hedrick
Industries would be able to expand the quarry mine using existing lands within the permitted mine
boundary. Existing infrastructure could be utilized to ensure safe extraction of aggregate product,
minimize costs associated with the Proposed Action (as compared to the proposed alternatives),
and appease the required site screening criteria.
Additionally, the restored Forney Creek would increase connectivity with the floodplain and
provide increased in -channel habitat for aquatic species as well as increase riparian habitat quality
and diversity. Restoration would employ a Priority 1 & 2 restoration strategy to engage
floodplains, promote wetland development, and support healthy alluvial processes. Ultimately,
upon completion, the restoration will enhance aquatic passage by removing a low head dam located
at the upstream portion of the project and improving an undersized culvert near the downstream
end of the project.
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6.0 SITE PROTECTION INSTRUMENT
To ensure stream functionality and success of the aquatic resources over time, a Conservation
Easement buffer will be established along the banks of Forney Creek as a site protection
instrument. The conservation easement will serve to protect water quality of Forney Creek by
maintaining or establishing natural vegetation in a streamside or wetland parcel or buffer. The
easement will include a minimum 50 ft wide buffer that will extend along the existing wetland (up
reach of the dam) and new stream alignment top of bank throughout the project area (refer to
Appendix G.2).
Hedrick will maintain control of the property for over 50 years and the conservative easement will
be managed by Hedrick in perpetuity. Signs (or similar) and fencing will be installed around the
boundary of the sites to prevent unwanted access, inform the public and protect the site from
disturbance. Additionally, designs for the creek will incorporate entrenchment ratios that are wider
than the design bankfull channel width for the system (providing sufficient flood capacity to ensure
long-term stability of the design reach).
6.1 BASELINE AND EXISTING CONDITIONS
Please refer to the Alternatives Analysis Report for a detailed account of Forney Creek's existing
conditions. A brief summary of this information has been provided below.
6.1.1 Baseline Stream Assessment
CEC reviewed topographic maps, county soil survey and hydric soils lists, available aerial
photographs, the U.S. Fish and Wildlife Service (USFWS) National Wetlands Inventory, and the
National Hydrography Dataset map to identify potential wetlands, streams, and other potentially
jurisdictional waters within the proposed project area.
On June 4, 2019 CEC NCSAM Certified ecologists conducted the NCSAM along approximately
3,000 linear ft of Forney Creek proposed for relocation. Six assessment reaches were established,
each assessing approximately 200 to 850 linear ft of stream per reach, all six assessment reaches
scored as `Low Quality Waters.
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6.1.2 Natural Resources & Cultural Resources
The USFWS IPaC system was accessed to request an Official Species List under Section 7(c) of
the Endangered Species Act (ESA). Current species' populations and habitat conditions (status)
that "may be present" in the area designated in the IPaC request were considered within this
analysis. Results of the IPaC query identified three federally listed species: northern -long eared
bat (NLEB) (Myotis septentrionalis) (threatened); Michaux's sumac (Rhus michauxii)
(endangered); and dwarf -flowered heartleaf (Hexastylis naniflora) (threatened).
On March 23rd, 2020 CEC biologists performed a habitat assessment and species specific surveys.
No federally listed species were observed, nor were any potential suitable habitats for both
Michaux's sumac and dwarf -flowered heartleaf. In July and October of 2020, CEC biologists
performed an additional site visit to perform the Michaux's sumac species -specific survey. No
Michaux's sumac were observed during this effort. CEC rendered that the proposed construction
activities at this site would have no effect on any populations of the two federally listed plant
species.
The project area supports potential suitable habitat for the northern long-eared bat. Specifically
potential summer roost sites with some on -site trees offering "flaking bark", and in cavities or in
crevices of both live trees and snags, However, according to the North Carolina Natural Heritage
Program Biotics Database and the USFWS Asheville Field office website
(http://www.fws.gov/asheville/htmis/project review/NLEB_in WNC.html), no known NLEB
hibernacula or roost trees occur within Lincoln County. This project is located entirely outside of
the gray highlighted counties that the USFWS Asheville Field Office has determined to be
representative of an area that may require consultation.
There are no federally designated critical habitats located within or near the proposed project area.
Additionally, no cultural resources were identified to occur within the proposed project area during
the North Carolina Natural Heritage Program database the query.
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7.0 DETERNIINATION OF CREDITS
In lieu of credit purchases, it was determined during onsite pre -application meetings (and
subsequent email correspondence) between the USACE, NCDEQ/NCDWR, Hedrick, and CEC
that the relocation and proposed restoration of Forney Creek will serve to offset credit purchases
as compensatory mitigation for the proposed Permitee Responsible Mitigation (PRM) project.
PRM for the project includes: Natural Stream Channel design, low head dam removal, culvert
removal, bridge construction, and ecological uplift to a 303d and Low Scoring NCSAM stream
will ensure no net loss of aquatic resources would occur as a result of project implementation.
The relocation is being designed to specifically increase entrenchment ratio, reduce bank height
ratio, reduce erosion, increase large woody debris, improve pool -pool spacing, increase riffle
length, and improve riparian vegetation.
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8.0 DESIGN APPROACH AND MITIGATION WORK PLAN
8.1 DESIGN APPROACH
The proposed design features a Priority 1 & 2 restoration approach that involves creating a new
bankfull channel adjacent to the existing and raising the bankfull elevation to the historical
floodplain. The proposed design includes removal of the existing dump truck beds, which currently
function as weirs for low flow conditions and storm events (Appendix G.1). The design proposes
to maintain the existing elevation of the low flow weir to prevent loss of wetland features upstream
of the project reach as required by the Interagency Review Team, hence the reason for raising the
proposed design reach invert elevation by over 10 ft. Grade control is being provided in the form
of alluvial riffles and boulder structures along the main stream channel, and stabilization will be
provided where the dump truck beds are removed at the beginning of the restoration reach to
prevent scouring of the banks.
The restored stream channel will utilize wood structures, constructed riffles, and live stakes. In -
stream structures will include log riffles, rock riffles, boulder structures (cross vanes and J-hooks),
and log vanes. These features will provide grade control, improve bed form diversity, and provide
refugia for aquatic organisms. A combination of log vanes, toe -wood, rootwads, and live stakes
will also be used to stabilize outer bends and provide organic matter and refugia to the stream.
The floodprone width provided in the proposed design ranges approximately from 120 ft to 180 ft.
The design incorporates an entrenchment ratio range from 3.6 to 6.5 with an average of
approximately 5, meaning that the floodprone width is anywhere from 3.6 to 6.5 times wider than
the design bankfull channel width for this system. This provides sufficient flood capacity to ensure
long-term stability of the design reach.
8.1.1 General Work Plan Considerations
Soil Compaction
The landscape of the proposed relocation reaches matches the existing and surrounding landscape
No soil compaction issues or loss of soil fertility is anticipated for the relocation of Forney Creek.
Soil Suitability
Soils within the current Forney Creek footprint and the newly relocated Forney Creek footprint
are comprised entirely of Chewacla loam, 0 to 2 percent slopes, frequently flooded partially hydric.
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Prior to and during construction, soils will be sampled to assess soil fertility. If nutrient deficiencies
are identified, a nutrient management plan will be developed by a NC Licensed Soil Scientists and
implemented to help increase the potential success of the new plantings.
Land Disturbance
Priority 1 restoration will include the grading of a new channel. To maintain hydrology in the
wetland upstream of the dam the invert elevation of the proposed stream matches the current invert
on the dam. Typical dam removal for aquatic passage and restoration specified removal of all or a
portion of the dam and grading the proposed stream to the lower elevation. This design maintains
elevation of the dam and brings the stream channel up the dam elevation.
Under the Proposed Action, Hedrick would continue to discharge, monitor and report
requirements, and other provisions under the current NPDES permit (#NCG020097). Construction
phase erosion and sediment controls will be implemented in accordance with NCDEQ/NCDWR
standards to ensure sediment resulting from project construction will remain onsite (please refer
to sheets 23 and 24 within the Appendix B Forney Creek Conceptual Stream Relocation Plan
Natural Channel Design). The contractor will be instructed to disturb only as much ground as
necessary to complete the active phase of work. A temporary cover seed mix and straw mulch will
be installed to provide ground cover and stabilize exposed soil.
Additionally, Hedrick will continue to operate under Stormwater General Permit (#NCG020000)
for Mining Activities (Effective 7-1-2021, Expires 6-30-2025). Subsequently, a draft Stormwater
Management Plan (SMP) has been prepared for the project. Upon approval(s) from the USACE
and NCDEQ for implementation of the proposed action, applications for SMPs and applicable land
disturbance permits will be coordinated and obtained from the local regulatory agencies.
Stream Restoration
The geomorphic parameters table provides hydraulic and geomorphic comparison of the existing
channel, proposed channel, and reference channels. The stream relocation channels were designed
in a way to match the existing cross sectional area of the channel as close as possible to avoid
future failures that could occur by designing the channel too wide or too narrow.
Construction is expected to start on the downstream end of each reach working upstream. Flow
will be diverted around the construction zone via pump around, as necessary. Excavated material
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from the new channel will be used to fill the existing channel to avoid time delays and unnecessary
stockpiling of material. The floodplain corridor will be excavated first and then the in -stream
channel will be excavated. Construction will be performed during low flow conditions. The
relocated stream channels will be stabilized with seed and straw mulch and coir matting at the end
of every day or before any impending chance of rain. Flow will not be diverted into the new
channel until coir matting is installed and the stream banks have at least some emergent vegetative
coverage.
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9.0 MAINTENANCE PLAN
Maintenance of the relocated stream reaches and all structures associated with the project will be
accomplished by Hedrick and/or their agents if the range of natural variability is exceeded during
the 7-year monitoring period (of which includes evaluation two times a year and during 10+ year
storm events) (refer to section 11.0 below for a description of all monitoring requirements). If any
portion of the mitigation project fails to meet the specified performance standards in a monitoring
year, the reasons for this failure shall be determined and a corrective action plan (which includes
proposed actions, a schedule and monitoring plan) will be prepared. If it is believed that corrective
action to a problem area is not warranted, the corrective action plan shall state the reasons. The
corrective action plan will be implemented as soon as possible following agency approval.
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10.0 MONITORING REQUIREMENTS, PERFORMANCE STANDARDS &
REPORTING
10.1 MONITORING
Monitoring for the project will be guided by the protocols listed in the Wilmington District Stream
and Wetland Compensatory Mitigation Update (USACE, 2016) and USACE Regulatory Guidance
Letter (RGL) No. 08-03 (USACE, 2008). This includes requirements as outlined for General
Monitoring, Planted Vegetation, Stream Channel Stability and Stream Hydrology.
In addition to the seven years of monitoring that will be required post -construction, subsequent
monitoring activities will be conducted by Hedrick and/or their agents after completion of
construction activities. The monitoring includes, biannual monitoring using the NCSAM & North
Carolina Wetland Assessment Method (NCWAM), and visual monitoring after each 10-year storm
event, at previously surveyed longitudinal profiles, cross sections and wetland bathymetry. Refer
to Table 2 for the proposed project -monitoring schedule.
Table 2. Monitoring Schedule
Activity
Targeted Completion
As -built Surveys
Directly following final construction
1st Annual Monitoring: Visual assessment,
ISt growing season following completion of
geomorphology, vegetation.
construction
2nd Annual Monitoring: Visual assessment,
2nd growing season following completion of
geomorphology, vegetation.
construction
3d Annual Monitoring: Visual assessment,
3rd growing season following completion of
geomorphology, vegetation.
construction
5t1i Annual Monitoring: Visual assessment,
5th growing season following completion of
geomorphology, vegetation.
construction
7th Annual Monitoring: Visual assessment,
7th growing season following completion of
geomorphology, vegetation.
construction
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A final as -built survey will be submitted following the completion of all physical and biological
improvements, including planting, to document baseline conditions. The as -built survey will
include photo documentation at all cross -sections and monitoring instruments, a plan view
diagram, a copy of the recorded easement, verification of the installation of conservation easement
boundary markers, a longitudinal profile, and vegetation information. Stream lengths will be
calculated using the stream centerline. As -built surveys will indicate the locations of all monitoring
activities. The As -built reports will be provided to the USACE within 90 to 120 days of completion
of physical and biological improvements.
10.1.1 Vegetation Planting and Monitoring Requirements
Vegetation planting and subsequent monitoring will be guided by the Wilmington District Stream
and Wetland Compensatory Mitigation Update (USACE, 2016). This includes the measures
regarding Vegetation Planting and Monitoring Requirements as well as the Planted Vegetation
Performance Standards.
The source of the native plant species will come from a local nursery provided by the stream
contractor. The detailed planting list has been developed based on the Planting plan was developed
based on the Schafale Classification of Natural Communities of NC 4th approximation and includes
a mixture of native tree and shrub species common to the area. These species are ideal for stream
restoration projects and have a history of survival in this region within this habitat. The stream
banks will be planted with live stake species typically found growing on the banks of streams. The
floodplain will contain a mixture of bare -root seedlings and container grown tree and shrub
species. Please refer to Appendix G.3 for a detailed project -planting list.
Vegetation plots will be monitored for 7 years, with monitoring events occurring on years 1, 2, 3,
5, and 7. Any required vegetation planting/replanting will be conducted between November 15
and March 15, unless otherwise noted in the approved Mitigation Plan or remedial action plan.
Vegetation monitoring will be conducted between July 1st and leaf drop. If possible, monitoring
will occur later in the growing season to capture any effects of climatic or other conditions that
may adversely affect vegetation survival.
Vegetation will be planted and plots established at least 180 days prior to the initiation of the first
year of monitoring (Year 1).
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A combination of permanent fixed plots and random plots will be used to demonstrate vegetation
coverage. Random plots will not make up more than 50% of the total required plots. Random
plots will be the same size as the fixed plots. Additionally, the location (GPS coordinates and
orientation) of random plots for every year of monitoring will be identified in the monitoring
report, and the plots will be marked so the plots may be evaluated in the field.
Permanent plots to sample vegetation will be randomly located in each of the target communities.
Plot sizes for the determination of stem density and vigor (height) will be a minimum of 0.02 acre
in size, and will typically be square or rectangular. Fixed plots will not overlap the stream (top-
of-bankto top -of -bank) to ensure that vegetation data does not include stream bank live stakes.
Vegetation monitoring plots will be located across the site to provide a random sampling of all the
vegetation community types reestablished on the site. The monitoring plots will make up a
minimum of 2% of the planted portion of the site with a minimum of 4 plots.
Upon initial establishment of fixed vegetation plots (as -built baseline/year 0), the plot corners will
be identified in the field with markers. The plot will be divided into a grid pattern so that each
planted stem can be identified for future monitoring according to its grid location within the plot.
Plot vegetation data collected will include:
• Within each fixed plot: species, height, grid location, planted versus volunteer, and age
(based on the year the stem was planted, or first observed for volunteers).
• Within each random plot: species and height.
• For both fixed and random plots, all woody stems, including exotic and invasive species,
should be counted (exotic/invasive species will not count toward success of performance
standards).
• Individual plot data for planted and volunteer species will be provided separately.
• The application of fertilizers will be conducted at the time of planting or as part of a
remedial action plan if needed.
10.1.2 Planted Vegetation Performance Standards
Within planted portions of the site, a minimum of 320 stems per acre will be present at year three;
a minimum of 260 stems per acre will be present at year five; and a minimum of 210 stems per
acre will be present at year seven.
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• Planted bare root tree seedlings (18-24" tall at planting), must average 7 feet in height at
year five and 10 feet in height at year seven.
• No more than 50% of any one species of the native riparian plant community shall
contribute towards stems per acre. Native volunteer species may comprise more than
50% of the actual stem count.
10.1.3 Stream Channel Stability and Stream Hydrology Monitoring
Channel stability will be monitored for 7 years, with monitoring events occurring on years 1, 2, 3,
5, and 7, and will follow the methodology contained in the USDA Forest Service Manual, Stream
Channel Reference Sites (Harrelson, et.al, 1994).
A longitudinal profile of the thalweg, water surface, bankfull, and top of bank, will be collected
during the as -built survey of the constructed channel to compare with future geomorphological
data. Additional longitudinal profiles maybe established for monitoring purposes.
Permanent, monumented cross -sections will be installed, and in general, the locations will be
selected to represent approximately 50% pools and 50% riffle areas. The location and frequency
allowed for cross -sections will be based on best professional judgment. The selection of locations
will include areas that may be predisposed to potential problems, and all channel cross -sections
within riffles will include measurements of Bank Height Ratio (BHR) and Entrenchment Ratio
(ER), which will be documented in monitoring reports.
10.1.4 Stream Channel Stability and Stream Hydrology Performance Standards
All stream channels will receive sufficient flow throughout the monitoring period to maintain an
Ordinary High Water Mark (OHWM) in accordance with the requirements of RGL 05-05, dated
December 7, 2005, which establishes the extent of USACE jurisdiction for non -tidal waters for
CWA Section 404.
BHR will not exceed 1.2 at any measured riffle cross-section. This standard only applies to reaches
of the channel where BHR is adjusted to reference condition through design and construction.
Civil & Environmental Consultants. Inc.
-18- Permittee-Responsible Mitigation Plan
CEC Project 183-802
November 2021

BHR and ER at any measured riffle cross-section will not change by more than 10% from the
baseline condition during any given monitoring interval (e.g., no more than 10% between years 1
and 2, 2 and 3, 3 and 5, or 5 and 7).
When bank pin arrays are required, average bank pin measurements at each cross section (i.e.,
length of pin exposed due to lateral movement of the bank) will not exceed 10% of as -built bankfull
width during any given monitoring interval (e.g., no more than 10% between years 1 and 2, 2 and
3, 3 and 5, or 5 and 7), and individual bank pin measurements will not exceed 20% of as -built
bankfull width over the duration of monitoring. When cross sections are added to document bank
movement in certain areas, bankfull cross sectional area must not increase by more than 15% over
the duration of monitoring.
10.1.5 Annual Visual Monitoring
CEC will perform visual assessments of restored and re-established streams and associated
wetlands. Visual assessments will occur following a 10-year recurrence interval flow event as
determined to occur when flows on Killian Creek near Mariposa, NC (USGS 0214269569) exceed
3,660 cubic feet per second. CEC will view the 0214269569 following major precipitation events
to identify when 10-year recurrence interval discharges have been exceeded. The Killian Creek
watershed is adjacent to Forney Creek and is likely to encounter similar rainfall patterns during
large flood events greater than or equal to the 10-year event.
Visual assessments will allow CEC to identify, document, and provide recommendations for
corrective actions for conditions that threaten performance standards. Visual monitoring will focus
on the stability of streambanks, performance of in -stream structures, and the stability of
constructed grades. Photo point locations will be established, when instabilities or areas of concern
are identified. Established photo points will provide a location from which to take photos from the
same vantage point and direction for successive monitoring visits. The location of the photo points
will be documented using GPS and illustrated on a map in the annual monitoring reports. Photos
and a summary of visual assessments will be provided in the annual monitoring reports.
10.1.6 Stream NCSAM & NCWAM Monitoring
At the request of the USACE PM, Mr. Bryan Roden -Reynolds, CEC will utilize the NCSAM to
score stream function and NCWAM to score the existing Wetland Area function on the upper
Civil & Environmental Consultants. Inc. -19- Permittee-Responsible Mitigation Plan
CEC Project 183-802
November 2021

reach portion of Forney Creek, twice a year. Both methods will provide photo -documentation
twice every year to assess buffer development and plan.
10.1.7 Monitoring Reporting
Post-Construction/As Built monitoring reports will be submitted to the USACE and NCDEQ at
years 1,2,3,5 & 7. Monitoring reports will be prepared with guidance from RGL 08-03. Hedrick,
and/or their consultant, will provide a written report to the USACE PM annually. The reports shall
include, at minimum, the following:
• A United States Geological Survey topographic quadrangle with the project area
indicated.
• A detailed narrative that summarizes the condition of the relocation reaches and any
maintenance activities.
• Appropriate site maps that show the locations of all sampling plots, photographic
locations, and data collection stations.
• Results and interpretation of vegetation surveys, including the following: Conduct
surveys of living trees at each monitoring location. Planted seedlings and container
grown survival shall be documented by performing monitoring at the vegetative plots.
A table will be provided which documents the following for each monitoring plot:
monitoring plot identification, latitude, longitude, count of planted trees per plot,
height of trees, count of volunteer tree species per plot, and trees per acre value for
each plot. Visual estimates of percent cover, species composition, species diversity,
estimates of percent cover of exotic species, composition of plant community
(wetland indicator status), density of all trees within the monitoring plots (including
natural recruitment), height of all planted trees, and estimates of natural recruitment.
• Descriptions of the condition of applicable in -stream habitat structures (including but
not limited to log riffles, toe wood, root wads, etc.).
• A discussion of likely causes of observed tree mortality within vegetation plots or
areas that did not achieve specified performance standards.
Civil & Environmental Consultants. Inc. -20- Permittee-Responsible Mitigation Plan
CEC Project 183-802
November 2021

• Metrics relating to dimension and profile performance standards will be submitted
and compared to as -built reports.
• Monitoring reports shall present yearly data in tabular and graphical format
comparing as -built, target, current and previous years monitoring data, and shall
include a discussion of any deviation from as -built, target, or previous year's data.
10.1.8 Additional Monitoring
Storm & Biannual Monitoring — Hedrick, and/or their agent, is responsible for conducting visual
monitoring throughout the site during each monitoring year by traversing the entire project site to
identify and document areas of encroachments, indicators of livestock or recreational vehicle
access, significant stream instability, or other items of concern. Visual monitoring of the stream
channel and wetlands is intended to identify potential problems early and allow them to be traced
and addressed, if necessary. A brief narrative with photo points of the results of the visual
assessments shall be documented in the monitoring reports. Any area of concern shall be annotated
on a plan view of the site with GPS coordinates provided in decimal degrees, with photographs,
and with the written narrative describing the features and issues of concern. If a feature of concern
is identified, that same feature shall be reassessed on all subsequent visual assessments. Depending
on the nature of the concern, field measurements may be warranted to track conditions as they
worsen or improve over time. Photographs shall be taken from the same location year-to-year to
document the current condition of the concern. The monitoring report shall identify all
recommended courses of action, which may include continued monitoring, repair or remedial
action to alleviate concerns.
Photo points will be established at each permanent stream cross-section. The location for taking
the photographs will be from the center of the stream channel, in line with the two permanent cross
section monuments located on either bank. Photographs will be taken facing upstream and
downstream as well as looking toward the riparian buffer along the right bank and looking toward
the riparian buffer along the left bank.
CEC will install two manual read stream gauges in or alongside the upstream wetland to monitor
water surface elevations. The gauges will be installed prior to construction to identify existing
Civil & Environmental Consultants. Inc. -21- Permittee-Responsible Mitigation Plan
CEC Project 183-802
November 2021

water surface elevations. CEC will monitor surface water elevations daily during construction and
post construction during planned monitoring events. CEC will produce plots of water surface
elevations in the wetlands to describe changes, which may occur because of downstream
restoration activities. CEC will maintain and monitor the gauges 3 month prior to construction and
during the 7-year monitoring period. CEC will analyze the surface water data once annually for a
total of eight times and will produce graphs of the analyses and provide a brief synopsis of results.
Civil & Environmental Consultants. Inc.
-22- Permittee-Responsible Mitigation Plan
CEC Project 183-802
November 2021

11.0 LONG-TERM MANAGEMENT PLAN
Long-term management of the newly relocated Forney Creek will include maintenance of signage,
site protection issues, and reporting any site deficiencies, if applicable. Hedrick Industries will rely
on current staff and contracted consultants to document any deviations or issues with long-term
maintenance of the sites. The creek relocation design was created to enhance aquatic habitats,
which will be self-sustaining over time and require minimal long-term active maintenance and
management once performance standards have been achieved. In the event that unforeseen
problems occur during long-term management, which may jeopardize the integrity of the natural
stream system, Hedrick Industries will notify the USACE to coordinate an appropriate
management strategy to be implemented. Hedrick has money set aside for long-term stream
maintenance related expenses. Long-term active management will cease when all performance
standards have been met and/or after the 7-year monitoring period is over and has been deemed
successful. The long-term protections of the site will continue to be enforced after monitoring has
ended; however, no vegetation or hydrological management will occur since the sites are designed
to naturally develop over time into a passive, self-sustaining stream system.
Civil & Environmental Consultants. Inc.
-23- Permittee-Responsible Mitigation Plan
CEC Project 183-802
November 2021

12.0 ADAPTIVE MANAGEMENT PLAN
Adaptive management measures will be handled on a case -by -case basis when problems occur, in
consultation with the USACE and NCDEQ. If performance standards are not being met, or if large-
scale corrective measures are required, Hedrick Industries will provide the agencies with a written
plan to address the documented problems within 60 days of discovery. This plan should identify
any and all problems and should set forth a schedule to meet performance standards and address
the identified failures. Upon written approval, Hedrick Industries will use available funds that have
been set aside for mitigation related expenses to address corrective measures and provide
documentation to the agencies when corrective measures have been addressed. Corrective
measures could include, but are not limited to, invasive species management, bank stabilization,
repair or replace signage and fencing, and supplemental planting.
Civil & Environmental Consultants. Inc.
-24- Permittee-Responsible Mitigation Plan
CEC Project 183-802
November 2021

APPENDIX G.1- SITE PHOTOGRAPHS

Civil & Environmental Consultants, Inc.
Charlotte, NC
Phone [phone] • Toll Free: 855/859-9932 www.cecinc.com
Photo Number: I
Description: NCSAM Reach 1, Low Head
Dam
Photo Number: 2
Description: NCSAM Reach 1
Lake Norman Quarry
Hedrick Industries
Lincolnton County, NC
CEC Project No. 183-802
1 I Page

Photo Number: 3
Description: Forney Upreach of Low Head
Dam
R.,
�a
i
Photo Number: 4
- �rF.,c ,
��� �t ire V,�...
%a-
'� f a
Description: Forney Typical Bank
Nt-
Ic
7 �f1 p
�p C
Lake Norman Quarry
Civil & Environmental Consultants, Inc.
Hedrick Industries
Charlotte, NC
Lincolnton County, NC
Phone [phone] • Toll Free: 855/859-9932 www.cecinc.com
CEC Project No. 183-802
2 1 P a g e

�1 AW
AV
Civil & Environmental Consultants, Inc.
Charlotte, NC
Phone [phone] • Toll Free: 855/859-9932 www.cecinc.com
Photo Number: 5
Description: NCSAM Reach 2
Photo Number: 6
Description: NCSAM Reach 2 Looking
North
Lake Norman Quarry
Hedrick Industries
Lincolnton County, NC
CEC Project No. 183-802
3 1 P a g e

A IM
Civil & Environmental Consultants, Inc.
Charlotte, NC
Phone [phone] • Toll Free: 855/859-9932 www.cecinc.com
Photo Number: 7
Description: NCSAM Lower Reach 2 &
Upper Reach 3
Photo Number: 8
Description: NCSAM Reach 3
Lake Norman Quarry
Hedrick Industries
Lincolnton County, NC
CEC Project No. 183-802
4 1 P a g e

A IM
Civil & Environmental Consultants, Inc.
Charlotte, NC
Phone [phone] • Toll Free: 855/859-9932 www.cecinc.com
Photo Number: 9
Description: NCSAM Reach 4
Photo Number: 10
Description: NCSAM Beaver Activity
Lake Norman Quarry
Hedrick Industries
Lincolnton County, NC
CEC Project No. 183-802
5 1 P a g e

A IM
Civil & Environmental Consultants, Inc.
Charlotte, NC
Phone [phone] • Toll Free: 855/859-9932 www.cecinc.com
Photo Number: 11
Description: NCSAM Lower Reach 5 &
Upper Reach 6
Photo Number: 12
Description: NCSAM Reach 5
Lake Norman Quarry
Hedrick Industries
Lincotnton County, NC
CEC Project No. 183-802
6 1 P a g e

Civil & Environmental Consultants, Inc.
Charlotte, NC
Phone [phone] • Toll Free: 855/859-9932 www.cecinc.com
Photo Number: 13
Description: Typical of Most Reaches
Asian clam (Corbicula)
Photo Number: 14
Description: Forney Active Bank
Undercutting
Lake Norman Quarry
Hedrick Industries
Lincolnton County, NC
CEC Project No. 183-802

APPENDIX G.2 - DRAFT CONSERVATION EASEMENT DESIGN

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\ N14- 26' 46.20-El M� S76* 02' 27.30-4
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�"-

APPENDIX G.3 - PLANTING PLAN

P.• �2018 � 183-802 � —CADD � Dwg � 183-802-5gures. dwgjEX C-51 LS.•(8/5/2021 — jtumer) — LP.• 81512021 2.20 PM
Strearn Ri arian ZonePhntin Plan
Planting
Conm»n'_dame
ScientficName
Indicator
Sim
Density
planhng
Peromt
Status
Zone
Cm tics
St —Acre
Spice -bush
tindera bemoin
FAC
LS
24" spacings
A
20*
Arnencan
platanus
FACR'
LS
24" spacings
4
?0*
SVcarrore
ocridentalls
Tag Alder
I Ahrusserrulata
OBL
LS
1 24" spacings
A
IT
Silk dogwvad
Comusamomum
FAC`i'
LS
24" spacings
A
20*
River Birch
River Birch
FACW-
LS
24" spacings
A
20*
Unodendror,
Yellow poplar
tuhpifera
FACU
Bare root
60
B
12.5*
Pignut Hickory
Carya ghrbra
FACU
Bare root
60
B
125*
Blackgum
Nyssasyluatica
FAC
Bare root
60
B
125*
Amencan
Platanus
FACVi'
Bare root
60
B
12.5*
Snxse
ocridentalis
Waier Oak
Quercus ngra
FAC
Bare root
60
B
12.5*
Conunon
Aslmi7a trilaba
FAC
Bare root
60
B
12.5*
Pawpaw
Spicebush
bndera benzom
FAC
Bare root
60
B
12.5*
Conmm
Amdanchier
Service
arborea
FAC
Bare,
6(P
B
12.5*
*Species and percent composition dependent upon availability
*PI anti ng plan uti I i zes Schaf al a CI assi fi cation of Natural Communities of NC 4th Approximation
and was cross-reference d to verify al I proposed pl ants are native to Lincoln County
SCALE IN FEET
0 100 200
NOTES:
1. PLANS FOR PERMITTING PURPOSES
ONLY, NOT FOR CONSTRUCTION.
AA%
Dt-Vtwo
Vu
`.)J .rJ
50' FROM
TOP OF BANK
ZONE B ZONE A VARIES ZONE A
rff
F
Z//
7
Civil & Environmental Consultants, Inc.
3701 Arco Corporate Drive • Suite 400 • Charlotte, NC 28273
Ph: 980.237.0373 • Fax: [phone]
www.cecinc.com
DRAWN BY: .1ST I CHECKED BY:
DATE: AUGUST 2021 JDWG SCALE:
1 G G v
cv `x'
C crU w
C.- C! ftYl t
50' FROM TOP
OF BANK
ZONE B
HEDRICK INDUSTRIES
FORNEY CREEK STREAM RELOCATION PLAN
LAKE NORMAN QUARRY, STANLEY N.C.
KATI APPROVED BY:
AS SHOWN I PROJECT NO:
STREAM PLANTING PLAN
CTC EXHIBIT: _ _
183-802 C-5

Streams
Common
Scientific
Indicator
Planting
Planting
Percent
Name
Name
Status
Size
Density
Zone
Composition
(Stems/Acre)
Silky
Cornus
Dogwood
amomum
FACW
LS/BR
24" spacings
A
20*
American
Platanus
FACW
LS/BR
24" spacings
A
20*
Sycamore
occidentalis
Hazel Alder
Alnus
serrulata
FACW
LS/BR
24" spacings
A
20*
Buttonbush
Cephalanthus
OBL
LS/BR
24" spacings
A
20*
occidentalis
River Birch
Betula nigra
FACW
LS/BR
24" spacings
A
20*
Willow Oak
Quercus
FAC
72
B
18*
hellos
root
Pin Oak
Q ercus
FACW
Bare
72
B
18*
root
American
Platanus
Bare
FACW
48
B
12*
Sycamore
occidentalis
root
Water Oak
Qs
FAC
48
B
12*
nzgra
root
Silky
Cornus
Bare
Dogwood
amomum
FACW
root
40
B
10*
False Indigo
Amorpha
Bare
FACW
60
B
15*
Bush
fruticosa
root
Common
Amelanchier
FAC
Bare
60
B
15*
Serviceberry
arborea
root
Zone A to be planted with Roundstone Southern Riparian Seed Mix
*Species and percent composition dependent upon availability

Wetlands
Common
Scientific
Indicator
PlantingPlanting
Percent
Name
Name
Status
Size
Density
Zone
Composition
(Stems/Acre)
Willow
Quercus
FAC
Bare
22
1
10*
Oak
phellos
root
Swamp
Quercus
FACW
Bare
22
1
10*
White Oak
bicolor
root
Swamp
Quercus
Bare
Chestnut
michauxii
FACW
root
22
1
10*
Oak
Schumard
Quercus
FAC
Bare
22
1
10*
Oak
shumardii
root
Sycamore
Platanus
FACW
Bare
22
1
10*
occidentalis
root
Shellbark
Carya
FAC
Bare
22
1
10*
Hickory
laciniosa
root
Black Gum
FAC
22
1
10*
sylvataa
root
Silky
Cornus
FACW
Bare
22
1
10*
Dogwood
amomum
root
Buttonbush
Cephalanthus
OBL
Bare
22
1
10*
occidentalis
root
False
Amorpha
FACW
Bare
22
1
10*
Indigo
fruticosa
root
*Species and percent composition dependent upon availability

Stream Riparian Zone Planting Plan
Common
Scientific
Indicator
Size
Planting
Density
Planting
Percent
Name
Name
Status
(Stems/Acre)
Zone
Composition
Spicebush
Lindera
benzoin
FAC
LS
24" spacings
A
20*
American
Platanus
FACW
LS
24" spacings
A
20*
Sycamore
occidentalis
Tag Alder
Alnus
serrulata
OBL
LS
24" spacings
A
20*
Silky
dogwood
Cornus
amomum
FACW
LS
24" spacings
A
20*
River Birch
River Birch
FACW
LS
24" spacings
A
20*
Yellow
Liriodendron
FACU
Bare
60
B
12.5 *
poplar
tulipifera
root
Pignut
Carya glabra
FACU
60
B
12.5 *
Hicko ry
root
Blackgum
Nys as
FAC
60
B
12.5 *
s
root
American
Platanus
FACW
Bare
60
B
12.5*
Sycamore
occidentalis
root
Water Oak
Quercus nigra
FAC
Bare
60
B
12.5*
root
Common
Asimina
FAC
Bare
60
B
12.5*
Pawpaw
triloba
root
Spicebush
Lindera
FAC
Bare
60
B
12.5 *
benzoin
root
Common
Amelanchier
FAC
Bare
60
B
12.5*
Serviceberry
arborea
root
*Species and percent composition dependent upon availabilit
*Planting plan utilizes Schafale Classification of Natural Communities of NC 4th
Approximation and was cross-referenced to verify all proposed plants are native to
Lincoln Count