20200987 Ver 1_More Info Received_20210115

Anchor QEA of North Carolina, PLLC ANCHOR
231 Haywood Street
Asheville, North Carolina 28801 �•�/
828.281.3350
January 15, 2021
Sue Homewood
Department of Environmental Quality
Division of Water Resources, Winston Salem Regional Office
450 W. Hanes Mill Rd, Suite 300
Winston Salem, North Carolina 27105
Re: Lake Adger Navigation Channel Maintenance Dredging
Response to NCDEQ-DWR Request for Additional Information
DWR #20200987 Polk County
Dear Sue:
On behalf of the North Carolina Wildlife Resources Commission (NCWRC), Anchor QEA of North
Carolina, PLLC, is pleased to provide this response to the North Carolina Department of
Environmental Quality (NCDEQ) Division of Water Resources — Water Quality Programs (DWR)
request for additional information for the Lake Adger navigation channel maintenance dredging
(DWR #20200987 Polk County). The request for additional information' was in response to the
Application for Department of the Army Permit Form 4345 (dated June 12, 2020; received by the
U.S. Army Corps of Engineers [USACE] June 16, 2020); Anchor QEA received them via email on
September 2, 2020.
NCDEQ-DWR approved extensions of the response date to December 31, 2020,2 and then
January 15, 2021,3 to align submission with the response to comments to USACE.
Anchor QEA provides the following additional information.
1. Monitoring Plan
NCDEQ-DWR Comment Received September 2, 2020
The application notes that a wetland monitoring plan will be developed with input from
the resource agencies. Please provide the wetland monitoring plan. The monitoring
plan should include a detailed proposal for monitoring activities, a clear proposal for
documentation and determination of future evaluations of wetland function, and a
1 North Carolina Department of Environmental Quality (NCDEQ) Division of Water Resources — Water Quality Programs, 2020. Letter
to: Jeff Ferguson, North Carolina Wildlife Resources Commission. Regarding: Request for Additional Information — Lake Adger
Channel Maintenance Dredging. August 26, 2020.
2 Sue Homewood (Department of Environmental Quality), 2020. Regarding: Lake Adger Dredging - 401 Request for Additional
Information. Email to: Jeff Ferguson, Kaylie Yankura (NC Wildlife Resources Commission). September 18, 2020.
3 Sue Homewood (Department of Environmental Quality), 2020. Regarding: Lake Adger Dredging - 401 Request for Additional
Information. Email to: Robert Cork (Anchor QEA). December 23, 2020.

January 15, 2021
Page 2
mitigation to compensate for any inadvertent loss of wetland function withing wetlands
to be impacted with dredge material. [75A NCAC 02H .0506(3)]
Response on Behalf of NCWRC
The Wetland Monitoring Plan is included as Attachment A. The Wetland Monitoring Plan was
developed by NCWRC and Anchor QEA, in consultation with NCDEQ-DWR.
2. Phasing and/or Construction Sequencing Plan
NCDEQ-DWR Comment Received September 2, 2020
Please provide a detailed phasing and/or construction sequencing plan proposed for
this project. For instance, will dredging activities be confined within certain portions of
the lake until completion/ before progressing to the next work area? How does the
construction sequencing tie into the containment system design and turbidity
monitoring proposals? [75A NCAC 02H .0506(2)]
Response on Behalf of NCWRC
Dredging and wetland establishment for the initial dredging episode is anticipated to follow the
following approximate schedule:
• Weeks 1 and 2: Mobilization to Site, marking of delineated wetland extents, preparation of
wetland placement areas, and preparation for turbidity monitoring
• Weeks 3 to 5: Dredging activities
• Weeks 6 and 7: Demobilization and complete wetland placement activities
• Week 7 for several months: Monitor wetland placement area settlement to determine
planting timing, per wetland monitoring plan
• Two weeks following adequate settlement: Wetland planting activities
• Up to 2 years: Implement wetland monitoring plan
The 90% Design Set (Attachment B) includes a Sequence of Construction for the dredging
contractor. Means -and -methods for dredging activities will be submitted by the selected contractor
for approval by NCWRC designees. It is anticipated that dredging activities will start on the eastern
end of the navigation channel, and work back towards the public boat ramp.
3. Turbidity Monitoring
NCDEQ-DWR Comment Received September 2, 2020:
Please provide a more detailed and robust turbidity monitoring plan to ensure that
water quality standards will be maintained during in -water activities. [75A NCAC 02H
.0506(2)]

January 15, 2021
Page 3
Response on Behalf of NCWRC
The Turbidity Monitoring Plan is included as Attachment C. The Turbidity Monitoring Plan was
developed by NCWRC and Anchor QEA, in consultation with NCDEQ-DWR.
4. Future Dredging
NCDEQ-DWR Comment Received September 2, 2020:
The applicant mentions future routine dredging activities to be covered by this
approval. The Division recommends that prior to commencement of any future
dredging or disposal activities the areas to be used for disposal should be re-evaluated
by the regulatory agencies and may require updated jurisdictional determinations
and/or NCWAM evaluations, and that updated [sic]. [15A NCAC 02H .0506(1)]
Response on Behalf of NCWRC
This comment has been noted. It is anticipated that USACE will address this comment with
conditions to the permit, if approved.
Closure
Please do not hesitate to contact me at [e-mail] or [phone].
Sincerely,
Robert Cork, PE MEng
Managing Engineer
cc
USACE — David Brown, [e-mail]
NCWRC — Andrea Leslie, and [e-mail]
NCWRC — Jeff Ferguson, [e-mail]
NCDEQ-DWR— Kaylie Yankura, [e-mail]
Attachments
Attachment A Lake Adger Navigation Channel Maintenance Dredging Project Wetland Monitoring
Plan
Attachment B 90% Design Submittal for Lake Adger Navigation Channel Maintenance Dredging
Attachment C Lake Adger Navigation Channel Maintenance Dredging Project Turbidity Monitoring
Plan

Attachment A
Lake Adger Navigation Channel
Maintenance Dredging Project Wetland
Monitoring Plan

Anchor QEA of North Carolina, PLLC ANCHOR
231 Haywood Street�z Asheville, North Carolina 28801 QEA �i
828.281.3350
WETLAND MONITORING PLAN January 12, 2021
Lake Adger Navigation Channel Maintenance Dredging Project
Anchor QEA of North Carolina, PLLC, in Consultation with North Carolina Wildlife Resources
Commission
A plan for maintenance dredging of the public boat ramp and marina navigation channel has been
developed by engineering consultant Anchor QEA of North Carolina, PLLC in consultation with North
Carolina Wildlife Resources Commission (NCWRC). A component of this plan involves in -lake
placement of dredged material to create stable habitat features in proximity to existing wetlands and
transitional areas in the forebay of Lake Adger. The placement areas have been identified on sheet
C4 of the 90% Design Set submitted with the Response to USACE Comments and Provision of
Additional Information'.
Monitoring the stability of the placement areas and the success of planted vegetation will be
performed by NCWRC staff or a qualified contractor according to the following protocol:
1. Prior to any dredging or placement activity under this permit, NCWRC will send notification to
the North Carolina Division of Water Resources (DWR) Environmental Specialists and the
U.S. Army Corps of Engineers (USACE) representative with jurisdiction over this project. This
notification will describe the proposed dates of dredging and placement activity and include a
map identifying the locations and extents of the proposed maintenance dredge and material
placement for habitat creation.
2. The dredging contractor will perform a certified as -built survey of the extents and topography of
the completed placement area(s) at the end of the dredging and placement phase. The
contractor's surveyor will set and locate a benchmark at the high point of each placement area.
As -built surveys will be submitted to NCWRC for each dredging and placement operation for
inclusion in the monitoring reports.
3. Prior to planting, the elevation benchmarks will be monitored to assess settlement and
consolidation of the placed sediment over time. Monitoring of settlement on a weekly and/or
monthly basis will allow project engineers to estimate that adequate settlement has occurred
prior to planting.
4. Following adequate assessment, the planting contractor and project engineers will estimate
total areas and numbers of each planting type, and submit a plan to NCWRC prior to initiating
planting.
1 Anchor QEA, 2021. Letter to: David Brown, USACE. Regarding: Response to USACE Comments and Provision of Additional
Information. Lake Adger Navigation Channel Maintenance Dredging Project. January 15, 2021.
Att C_Wetland Monitoring Plan_2021-01-11.docx

January 12, 2021
Page 2
5. Following planting, the planting contractor will prepare a report for NCWRC listing the date,
species, and numbers of plantings at each placement area. Once this report has been received,
DWR and the USACE will be notified that planting operations have been completed.
6. Six months following completion of planting operations, NCWRC (or contractor) will perform an
assessment and report on the condition of the placement area(s) and any other related
temporary impacts that will have been replanted. Starting with the initial report, this information
will be compiled and forwarded to DWR and the USACE. A standard form will be developed to
include the following information for planted placement areas associated with each dredging
operation:
a. The dredging contractor's as -built survey map, estimates of pre -planting settlement, and
the planting contractor's record.
b. A visual and photo assessment of the planted areas. Photos may be taken from a boat as
viewed from different perspectives and/or from the air by an unmanned aerial system. If
significant issues of plant community failure are observed, then NCWRC will map and note
the problems in the report and will coordinate corrective actions, if needed.
c. The elevations and coordinates of benchmarks previously set on the placement areas will
be surveyed and recorded. The elevations and positions will be assessed relative to those
surveyed and recorded for the contractor as -built report to measure the extent of any
consolidation or movement of the placed material. Any apparent instabilities will be
documented.
7. During the monitoring period, any observed problems, instabilities or significant plant
mortalities will be noted and communicated to DWR and the USACE. NCWRC staff will begin an
evaluation of problems and develop a plan for remediation, if required.
8. Subsequent monitoring of planted areas will take place at 6-month intervals for a period of
3 years after the initial report for the specific activity. Photos, survey data, and observations will
be appended to the initial report. At the end of monitoring Year 2, NCWRC, DWR, and the
USACE may review conditions of the wetland plantings and decide if the monitoring interval can
be reduced to once per 12 months or if there is a need for additional monitoring.
9. Each new dredging episode will require monitoring reports for the resulting placement and
planting. Subsequent placement area(s) will be subject to the monitoring plan and time frame
described in the above steps.

Attachment B
90% Design Submittal for Lake Adger
Navigation Channel Maintenance
Dredging

90% DESIGN SUBMITTAL
LAKE ADGER NAVIGATION CHANNEL MAINTENANCE DREDGING
NORTH CAROLINA WILDLIFE RESOURCES COMMISSION
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TITLE SHEET
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GENERAL NOTES, LEGEND, AND ABBREVIATIONS
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EXISTING CONDITIONS
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C1
DREDGE PLAN
5
C2
PROFILE
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ISECTIONS
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C4
DREDGED MATERIAL PLACEMENT LAYOUT
8
C5
TURBIDITY MONITORING LOCATIONS
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IMPACTED AREAS
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DETAILS
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LAKE ADGER NAVIGATION CHANNEL MAINTENANCE DREDGING
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APPROVED BE: DIN (COLA, W.
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DATE: JANUARY 2021
TITLE SHEET
SHEET# 7
OF 77

GENERAL NOTES FOR MAINTENANCE DREDGING
1. THE CONTRACTOR SHALL FIELD VERIFY EXISTING CONDITIONS BEFORE BEGINNING
CONSTRUCTION AND WILL IMMEDIATELY INFORM NCWRC OF ANY
DISCREPANCIES FOUND BETWEEN THE PROJECT PLANS AND CONTRACT
SPECIFICATIONS PRIOR TO PROCEEDING WITH THE WORK.
2. CONTRACTOR SHALL STRICTLY ENFORCE ALL APPLICABLE HEALTH AND SAFETY
LAWS (I.E. OSHA) AND MAINTAIN SITE SECURITY.
3. CONSTRUCTION KICK-OFF MEETING WITH THE NORTH CAROLINA WILDLIFE
RESOURCES COMMISSION, THE ENGINEER AND OTHER RELEVANT STAKEHOLDERS
IDENTIFIED IS REQUIRED PRIOR TO ANY ONSITE WORK.
4. CONTRACTOR SHALL PROVIDE A SEQUENCE OF CONSTRUCTION TO BE APPROVED
BY THE NORTH CAROLINA WILDLIFE RESOURCES COMMISSION, AND THE
ENGINEER PRIOR TO SITE MOBILIZATION.
5. CONTRACTOR SHALL PROVIDE THE FOLLOWING SUBMITTALS TO BE APPROVED BY
NCWRC PRIOR TO SITE MOBILIZATION:
• HEALTH AND SAFETY PLAN
• DREDGING AND DREDGED MATERIAL PLACEMENT WORK PLAN, INCLUDING
MEANS -AND -METHODS TO PROTECT EXISTING WETLAND
• SURVEY WORK PLAN
• PROJECT CONSTRUCTION SCHEDULE
• CONTRACTOR QUALITY CONTROL PLAN
• SPILL PREVENTION PLAN
• PRE -CONSTRUCTION SURVEYS.
6. CONTRACTOR SHALL FIELD VERIFY THE EXISTING CONDITIONS WITHIN THE LIMITS
OF WORK AND WILL BE RESPONSIBLE FOR DETERMINING APPROPRIATE
QUANTITIES AND REQUIRED MATERIALS TO COMPLETE THE WORK.
7. CLEARING TO BE LIMITED TO THE LIMIT OF DISTURBANCE AS SHOWN ON THE
PLANS. WORK SHOULD LIMIT TREE REMOVAL BY WORKING AROUND EXISTING
TREES AS POSSIBLE. CONTRACTOR MUST RECEIVE APPROVAL FROM NCWRC PRIOR
TO REMOVAL OF ANY TREES.
8. ANY TREES DAMAGED OR REMOVED DURING THE WORK SHALL BE REPLACED BY
THE CONTRACTOR WITH THE SAME SPECIES OR SIMILAR AS APPROVED BY NCWRC.
9. THE HORIZONTAL DATUM SHALL BE BASED ON NORTH CAROLINA STATE PLANE,
NAD83, U.S. SURVEY FEET. THE VERTICAL DATUM SHALL BE BASED ON NAVD88.
THE HYDROGRAPHIC SURVEY WAS COMPLETED BY HAYES, JAMES & ASSOCIATES,
INC., IN OCTOBER 2018.
10. INFORMATION CONCERNING UNDERGROUND UTILITIES WAS OBTAINED FROM
AVAILABLE RECORDS, BUT THE CONTRACTOR IS RESPONSIBLE FOR DETERMINING
EXACT LOCATIONS AND ELEVATIONS OF THE LINES BY DIGGING TEST PITS BY
HAND AT ALL UTILITY CROSSINGS, WELL IN ADVANCE OF TRENCHING. IF
CLEARANCES ARE LESS THAN SHOWN OR SIX (6) INCHES, WHICHEVER IS LESS,
CONTACT NCWRC IMMEDIATELY.
11. CALL "NORTH CAROLINA 811" AT 811 OR 1-800-632-4949 FORTY-EIGHT (48)
HOURS PRIOR TO BEGINNING EXCAVATION OR DREDGING TO DETERMINE THE
EXACT LOCATION OF EXISTING UTILITIES.
12. ADDITIONAL UNDERWATER UTILITIES MAY EXIST ELSEWHERE WITHIN THE PROJECT
EXTENTS. CONTRACTOR SHALL FIELD VERIFY ANY IN -WATER UTILITIES, CROSSINGS
OR POTENTIAL IMPEDIMENTS TO THE WORK AND TAKE ADEQUATE PRECAUTIONS
TO AVOID THEM.
13. REPAIR TO UTILITIES OR PROPERTY DAMAGE AS A RESULT OF THE CONTRACTOR'S
NEGLIGENCE OR METHOD OF OPERATION MUST BE MADE AT THE CONTRACTOR'S
EXPENSE BEFORE CONTINUING WITH CONSTRUCTION.
14. ANY DAMAGES THAT MAY OCCUR TO REAL PROPERTY OR EXISTING
IMPROVEMENTS SHALL BE RESTORED BY THE CONTRACTOR TO AT LEAST THE
SAME CONDITION THAT THE REAL PROPERTY OR EXISTING IMPROVEMENTS WERE
IN PRIOR TO THE DAMAGES. THIS RESTORATION SHALL BE SUBJECT TO THE
OWNER'S APPROVAL; MOREOVER, THIS RESTORATION SHALL NOT BE A BASIS FOR
ADDITIONAL COMPENSATION TO THE CONTRACTOR. RESTORATION SHALL
INCLUDE, BUT NOT BE LIMITED TO, REGRASSING, REVEGETATION, REPLACING
FENCES, REPLACING TREES, ETC.
15. ALL UPLAND GRADING SHALL BE DONE IN SUCH A MANNER AS TO PROVIDE
POSITIVE DRAINAGE.
16. DISTURBED UPLAND AREAS SHALL BE GRADED AND RESTORED TO ORIGINAL
CONDITIONS. DISTURBED AREAS ADJACENT TO ESTABLISHED LAWNS SHALL BE
SODDED. OTHER DISTURBED AREAS SHALL BE SEEDED AND MULCHED. ALL
DISTURBED AREAS ARE TO BE STABILIZED AND SEEDED WITHIN 14 DAYS OF
DISTURBANCE UNLESS OTHERWISE NOTED. SLOPES STEEPER THAN 3:1 MUST BE
STABILIZED IN 7 DAYS. INSTALL TEMPORARY SEEDING ON ALL AREAS THAT WILL BE
LEFT IDLE FOR MORE THAN 14 DAYS. HARD WOOD MULCH IS AN ACCEPTABLE
TEMPORARY COVER BUT MAY NOT BE BLENDED INTO THE SUBGRADE AND WILL BE
REQUIRED TO BE REMOVED PRIOR TO CONTINUATION OF THE WORK. STRAW
MULCH AND TALL FESCUE SHOULD NOT BE USED IN RIPARIAN AREAS.
17. THE CONTRACTOR SHALL PROTECT ALL UTILITIES, AND EXISITNG INFRUSTRUCTURE
DURING CONSTRUCTION, AND ALL WETLANDS DURING CONSTRUCTION
OPERATIONS.
18. IT IS THE CONTRACTOR'S RESPONSIBILITY TO ENSURE WETLAND BOUNDARIES ARE
UNDERSTOOD PRIOR TO BEGINNING WORK.
19. THE CONTRACTOR SHALL OBEY ALL COUNTY HEIGHT, WEIGHT AND UNDERCLEARANCE
RESTRICTION S.TH E CONTRACTOR SHALL OBEY ALL APPLICABLE NOISE RESTRICTIONS.
20. ALL SITE ACTIVITIES INCLUDING BUT NOT LIMITED TO CLEARING, WATER LEVEL
DRAWDOWN, DREDGING, DEWATERING, WATER TREATMENT, TRANSPORTATION, AND
DISPOSAL, SHALL FOLLOW ALL APPLICABLE PERMITS AND CONTRACT DOCUMENTS.
21. IF DEBRIS IS ENCOUNTERED WHILE DREDGING, CONTRACTOR SHALL TRANSPORT
DEBRIS TO THE STAGING AREA WHERE IT WILL BE TRANSPORTED OFFSITE TO AN
APPROVED DISPOSAL LOCATION. VEHICLES TRANSPORTING DEBRIS OFFSITE MUST
FOLLOW POSTED SPEED LIMITS, TRAFFIC SIGNS AND SIGNALS, AND ALL COUNTY
HEIGHT, WEIGHT AND UNDERCLEARANCE RESTRICTIONS. CONTRACTOR SHALL NOT
TRACK OR DISCHARGE SEDIMENT OR DEBRIS ONTO ROADS.
22. THE CONTRACTOR IS RESPONSIBLE FOR OBTAINING ALL PERMITS NECESSARY FOR
CONSTRUCTION NOT SUPPLIED BY THE WILDLIFE RESOURCES COMMISSION. THIS MAY
INCLUDE BUT NOT BE LIMITED TO: ANY REQUIRED EROSION CONTROL OR LAND
DISTURBANCE PERMITS, ARMY CORP OF ENGINEERS PERMITS, STORMWATER PERMITS,
NPDES, CITY OR COUNTY BUILDING PERMITS, OR ROADWAY PERMITS. THE COSTS FOR
ADDITIONAL PERMITS WILL BE THE RESPONSIBILITY OF THE CONTRACTOR AND SHALL
NOT IMPACT THE PROJECT SCHEDULE.
23. CONTRACTOR SHALL IMPLEMENT EROSION AND SEDIMENT CONTROL AND MAINTAIN
EROSION AND SEDIMENT CONTROL MEASURES AS NECESSARY TO COMPLY WITH
COUNTY, STATE, AND FEDERAL LAWS AND REGULATIONS. ANY SEDIMENT CONTROL
MEASURES DISTURBED BY CONSTRUCTION WILL BE REPAIRED THE SAME DAY.
24. CONTRACTOR SHALL SUBMIT CONSTURCTION WORK PLAN AND ANCILLIARY WORK
PLANS IN ACCORDANCE WITH THE SPECIFICATIONS.
25. STOCKPILES MAY ONLY BE PLACED IN APPROVED LOCATIONS. ALL STOCKPILES LEFT AT
THE END OF THE DAY NEED TO BE STABILIZED UNTIL THE NEXT DISTURBANCE.
26. BARRICADING AND TRAFFIC CONTROL DURING CONSTRUCTION SHALL BE THE
RESPONSIBILITY OF THE CONTRACTOR AND SHALL CONFORM TO THE NCDOT
STANDARD SPECIFICATIONS AND DRAWINGS. PEDESTRIAN AND VEHICULAR TRAFFIC
FLOW SHALL BE MAINTAINED DURING ALL PHASES OF THE CONSTRUCTION. THE
CONTRACTOR IS RESPONSIBLE FOR PROVIDING TRAFFIC SAFETY MEASURES FOR WORK
ON PROJECT.
27. WHERE EXISTING GRADE EXCEEDS 5:1 (HORIZONTAL:VERTICAL) AND THE DEPTH OF FILL
EXCEEDS 5 FEET, BENCHING SHALL BE PROVIDED. A 2-FOOT DEEP BY 10-FOOT WIDE KEY
SHALL BE PROVIDED AT THE TOE OF THE FILL SLOPE. REFER TO NC BUILDING CODE
SECTION 107 FOR ADDITIONAL DETAIL.
28. CERTIFICATION OF CUT AND FILL SLOPES SHALL BE THE RESPONSIBILITY OF THE
CONTRACTOR AND SHALL BE MADE BY GEOTECHNICAL ENGINEER LICENSED TO
PRACTICE IN THE STATE OF NORTH CAROLINA. UNLESS OTHERWISE NOTED, ALL CUT
AND FILL SLOPES PROPOSED BY THESE PLANS SHALL BE 2:1 (HORIZONTAL:VERTICAL)
OR FLATTER.
29. CUT AND FILL SLOPES (EMBANKMENTS) SHALL BE CONSTRUCTED IN ACCORDANCE
WITH NCDOT STANDARD SPECIFICATION SECTION 235 OR THE GEOTECHNICAL (SOILS)
REPORT RECOMMENDATIONS, WHICHEVER IS MORE RESTRICTIVE. AT A MINIMUM, ALL
FILL SLOPES SHALL BE PLACED IN 10-INCH MAXIMUM LIFTS COMPACTED TO NOT LESS
THAN 95 PERCENT DENSITY (STANDARD PROCTOR). CONTRACTOR SHALL ARRANGE
FOR INDEPENDENT COMPACTION TESTING RESULTS TO BE PAID FOR BY THE
OWNER/DEVELOPER.
30. NO GRADING OR FILL SHALL OCCUR WITHIN 2 FEET OF A PROPERTY LINE WITHOUT
WRITTEN PERMISSION FROM THE ADJACENT PROPERTY OWNER.
31. UNLESS OTHERWISE INDICATED IN THESE PLANS TERRACES SHALL BE PROVIDED AS
FOLLOWS: WHERE GRADES EXCEED 3:1 (HORIZONTAL:VERTICAL), TERRACES AT LEAST 6
FEET IN WIDTH SHALL BE CONSTRUCTED AT NOT MORE THAN 30-FOOT VERTICAL
INTERVALS ON ALL CUT OR FILL SLOPES. SWALES SHALL BE PROVIDED ON TERRACES IN
ACCORDANCE WITH NC BUILDING CODE SECTION JI09.
32. CONTRACTOR IS RESPONSIBLE FOR ENSURING THAT THE WORK DOES NOT RESULT IN
UNACCEPTABLE INCREASES IN TURBIDITY WITHIN THE LAKE OR SURROUNDING
STREAMS. THE CONTRACTOR SHALL BE RESPONSIBLE FOR IMPLEMENTING MEASURES
TO CONTROL TURBIDITYAS NEEDED AND FOR FOLLOWING THE TURBIDITY
MONITORING PLAN.
33. ALL MECHANIZED EQUIPMENT OPERATED NEAR SURFACE WATERS SHOULD BE
INSPECTED AND MAINTAINED REGULARLY TO PREVENT CONTAMINATION OF STREAM
WATERS FROM FUELS, LUBRICANTS, HYDRAULIC FLUIDS OF OTHER TOXIC MATERIALS.
34. DISCHARGING HYDROSEED MIXTURES AND WASHING OUT HYDROSEEDERS AND
OTHER EQUIPMENT IN OR ADJACENT TO SURFACE WATERS IS PROHIBITED.
35. EROSION AND SEDIMENT CONTROL MEASURES SHALL BE INSPECTED DAILY AND AFTER
ANY RAINFALL. DEFICIENCIES SHALL BE CORRECTED IMMEDIATELY. A DAILY RECORD
SHALL BE MAINTAINED ON THE SITE BY THE CONTRACTOR. PROJECT SITE CONDITIONS
MAY REQUIRE INSTALLATION OF ADDITIONAL EROSION AND SEDIMENT CONTROL
MEASURES. EROSION CONTROL MEASURES AND MAINTENANCE SHALL BE IN
ACCORDANCE WITH THE NORTH CAROLINA EROSION AND SEDIMENT CONTROL
MANUAL.
36. CONTRACTOR WILL MAINTAIN PUBLIC ACCESS TO BOAT RAMP AND FACILITIES AT ALL
TIMES, OR LIMIT BLOCKING OF ACCESS WITH ADVANCED NOTICE TO THE PUBLIC.
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DATUMS:
1. HORIZONTAL DATUM: NORTH CAROLINA, NORTH AMERICAN DATUM (NAD83),
U.S. SURVEY FEET
2. VERTICAL DATUM: NORTH AMERICAN VERTICAL DATUM OF 1988 (NAVD88), FEET
SOURCES:
1. AERIAL PHOTOGRAPH ©2019 MICROSOFT CORPORATION ©2019 DIGITALGLOBE
©CNESS (2019) DISTRIBUTION AIRBUS DS
2. TOPOGRAPHIC SURVEY BY HAYESIJAMES DATED AUGUST 27, 2018.
GENERAL LEGEND:
PROPOSED:
14+00 PROJECT STATIONING
H I I I H
DREDGE AREA (PRIMARY)
905 DREDGE CONTOURS (1' INTERVAL)
- • - DREDGE AREA (CONTINGENCY)
EXAMPLE COIR LOG OR HAYBALE LOCATION
S EXAMPLE SILT CURTAIN OR SILT FENCE LOCATION
LIMITS OF DISTURBANCE
SITE ACCESS ROAD
- - - - STAGING AREA
EXISTING:
905 TOPOGRAPHY (1' INTERVAL)
00 CHANNEL MARKERS
> ----{ CULVERT
ROAD
---- ----- ----- SHORELINE (NORMAL POOL ELEVATION 911.61')
DETAIL AND SECTION REFERENCING:
DETAIL REFERENCE NUMBER 1
DRAWING ON WHICH DETAIL APPEARS C1
'-" INDICATES TYPICAL OR ON SAME DRAWING
DETAIL REFERENCE NUMBER 1 DETAIL
SCALE: 1" = 10'
XA
DICATES DIRECTION
CUTTING PLAN
SECTION "A" IS SHOWN ON DRAWING "C-2"_ C2
SECTION REFERENCE LETTER A SECTION
PLAN NUMBER WHICH SECTION WAS TAKEN SCALE: r' = 10'
ABBREVIATIONS:
FEET, MINUTES
"
INCHES, SECONDS
DEGREES
0
DIAMETER
#
NUMBER
APPROX
APPROXIMATE
CONC
CONCRETE
CY
CUBIC YARDS
DIA
DIAMETER
DU
DREDGE UNIT
DWG
DRAWING
E
EAST, EASTING
ELEV
ELEVATION
EX
EXISTING
FG
FINISHED GRADE
FL
FLOW LINE
GALV
GALVANIZED
HOR
HORIZONTAL
L
LENGTH
LF
LINEAR FEET
MAX
MAXIMUM
MIN
MINIMUM
MLLW
MEAN LOWER LOW WATER
N
NORTH, NORTHING
NAD
NORTH AMERICAN DATUM
NAVD
NORTH AMERICAN VERTICAL DATUM
P.E.A.
PROFESSIONAL ENGINEER
R, RAIDRADIUS
REINF
REINFORCED, REINFORCEMENT
ROW
RIGHT-OF-WAY
S
SLOPE, SOUTH
STA
STATION
SY
SQUAREYARD
TESC
TEMPORARY EROSION AND SEDIMENT CONTROL
TYP
TYPICAL
W
WEST, WATER
W/
WITH
WSEL
WATER SURFACE ELEVATION
SEQUENCE OF CONSTRUCTION:
SPECIFIC ACTIVITIES CONDUCTED BY THE CONTRACTOR TO
COMPLETE THE WORK INCLUDE, BUT ARE NOT LIMITED TO:
1. PREPARE AND SUBMIT FINAL WORK PLANS AND ALL OTHER
REQUIRED PRE -CONSTRUCTION SUBMITTALS.
2. ATTEND A PRE -CONSTRUCTION MEETING WITH THE OWNER,
THE ENGINEER AND OTHER RELEVANT STAKEHOLDERS
IDENTIFIED.
3. PERFORM AND SUBMIT ALL REQUIRED PRE -CONSTRUCTION
SURVEYS. IDENTIFY AND FLAG ALL WETLANDS WITHIN 100
FEET OF THE LIMITS OF DISTURBANCE IDENTIFIED IN THE
DRAWINGS.
4. ATTEND A CONSTRUCTION KICKOFF MEETING WITH THE
OWNER'S REPRESENTATIVE AND OTHER RELEVANT
STAKEHOLDERS IDENTIFIED.
5. MOBILIZE CREWS, FACILITIES, EQUIPMENT, AND MATERIALS
REQUIRED TO COMPLETE THE WORK.
6. INSTALL AND MAINTAIN ENVIRONMENTAL CONTROLS AND
APPROVED PLACEMENT AREA CONTAINMENT FEATURES.
7. PERFORM ALL REQUIRED DREDGING AND PLACEMENT
WITHIN THE LIMITS SPECIFIED ON THE DRAWINGS.
8. PERFORM AND SUBMIT ALL REQUIRED POST -CONSTRUCTION
SURVEYS.
9. PERFORM SITE RESTORATION AND DEMOBILIZATION IN
ACCORDANCE WITH THE TECHNICAL SPECIFICATIONS.
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SCALE: AS NOTED
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DESCRIPTION
LAKE ADGER NAVIGATION CHANNEL MAINTENANCE DREDGING
GENERAL NOTES, LEGEND, AND ABBREVIATIONS
DATE: JANUARY 2021
SHEET#
OF

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BOAT RAMP
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00 CHANNEL MARKERS - SUMMER 2019
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a l�vi\ / ' CBII before you dig.
- QEA �`/ RESOURCES APPROVED BE DIN (COLA, W.
COMMISSION SCALE: AS NOTED
DATE: IANUARY1011 EXISTING CONDITIONS SHEET# 3 of 11

♦� —D--ACCESS
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LEGEND:
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AREA APPROXIMATE EXTENTS
• — • — DREDGE AREA APPROXIMATE
EXTENTS
— APPROXIMATE LIMITS OF
DISTURBANCE - DREDGING AREA
— — — WETLAND DELINEATION
— —--- — SHORELINE (NORMAL POOL
ELEVATION 911.61')
0
NORTH
0 60 120
SCALE IN FEET
\ NOTES:
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1. HORIZONTAL DATUM: NORTH CAROLINA, NORTH
\ AMERICAN DATUM (NAD83), U.S. SURVEY FEET 50
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DRAFT -NOT FOR CONSTRUCTION
REVISIONS
NORTH
DESIGNED BY: CORK,R.
NORTH CAROLINA WILDLIFE RESOURCES COMMISSION
REV
DATE
BY
AP
DESCRIPTION
LAKE ADGER NAVIGATION CHANNEL MAINTENANCE DREDGING
ANCHOR
CAROLINA
,
, KROW Whans below.
Call before you dig.
DRAWN BY: HOLMER, D.
CHECKED BY: REEMTS, M.
-
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QEA --1`/
/'
RESOURCES
APPROVED B: DIN (COLA, W.
COMMISSION
SCALE: AS NOTED
DATE: JANUARY 2021
DREDGE PLAN
SHEET# 4
OF 11

LAKE ADGER CHANNEL CENTERLINE
920 920
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HORIZONTAL DISTANCE IN FEET
5X VERTICAL EXAGGERATION
LAKE ADGER CHANNEL CENTERLINE
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w ELEVATION 904.61' NAVD88
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NAVIGATION CHANNEL DREDGED MATERIAL TO BE REMOVED z N w
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— --- _...— ..— LAKE ADGER FULL POOL ELEVATION 911.61' J
LLs
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NOTE: ALL DESIGN SLOPES ARE 3H:1V UNLESS OTHERWISE NOTED. DRAFT -NOT FOR CONSTRUCTION
REVISIONS
NORTH
DESIGNED BY: CORK,R.
NORTH CAROLINA WILDLIFE RESOURCES COMMISSION
REV
DATE
BY
AP
DESCRIPTION
CAROLINA
DRAWN BY: HOMER, D.
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CHECKED BY: DINICO, M.
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SCALE: AS NOTED
IANDARV2011
PROFILE
SHEET# 5 OF 11

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OFFSET IN FEET (NO VERTICAL EXAGGERATION) OFFSET IN FEET (NO VERTICAL EXAGGERATION) OFFSET IN FEET (NO VERTICAL EXAGGERATION)
930
0
920
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NOTE: ALL DESIGN
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DRAFT -NOT FOR CONSTRUCTION
REVISIONS
NORTH
REV
DATE
BY
AP P D
DESCRIPTION
DESIGNED BY: CORK,R.
NORTH CAROLINA WILDLIFE RESOURCES COMMISSION
^�
CAROLINA
DRAWN BY: HOLMER, D.
LAKE ADGER NAVIGATION CHANNEL MAINTENANCE DREDGING
J
ANCHOR
/ '
,
, KROW Whans below.
CBII before you dig.
CHECKED BY: REEMTS, M.
APPROVED BE DIN (COLA, W.
RESOURCES
COMMISSION
SCALE: AS NOTED
SECTIONS
DATE: JANUARY 2021
SHEET# 6
OF 11

/ O PROPOSEG D ; �P ° 2TF LEGEND:
O STAGIN' j � � 4x• o•X � !
♦ �� C 92 PROPOSED DREDGED MATERIAL PLACEMENT ♦e r �\� AREA i v \ \ Al AREA DESIGNATION
0 " d:' ♦: YYY ' i o 1
P� n.: \. f EXAMPLE COIR LOG OR HAYBALE LOCATION
j�• Q° 14+00 PROJECT STATIONING
2p0 / / \ \ \ \ d NAVIGATION CHANNEL DREDGE AREA
APPROXIMATE EXTENTS
t o 907 ° � ' • � — • — • — DREDGE AREA APPROXIMATE EXTENTS
.1
/
JI ga$ D \ ok>� APPROXIMATE LIMITS OF DISTURBANCE -
o C1 DREDGING AREA
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MARKER (TYPICAL) < O \ '\'\ • — WETLAND DELINEATION
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NORTH
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NOTES:
J s o c 1. PLACEMENT AREAS ARE APPROXIMATE,
O ` ��� p 1 CONTRACTOR TO INSTALL SEDIMENT CONTROL
° ° FEATURES AS NEEDED TO CONTAIN SEDIMENT
WITHIN TARGET AREAS TO THE ELEVATIONS
SHOWN.
r•rjr ��Jrrr.=.F 5�1 �, ° • APPROXIMATE AREA OF DISTURBANCE ° o o• 2. CONTRACTOR TO UTILIZE COMBINED COIR LOGS,
c� r S' FOR MATERIAL PLACEMENT 17.3 ACRES HAYBALES, SILT CURTAINS, SILT FENCES, OR OTHER
♦ a ° CONTROL STRUCTURES TO MANAGE SEDIMENTS
WITHIN PLACEMENT AREA EXTENTS.
Q3. CONTRACTOR MAY ADJUST ALIGNMENTS AS
NEEDED TO BALANCE PLACEMENT OPERATIONS
D j ;.3 1 , :'+"J n ° ap AND SEQUENCE THE WORK.
4. CONTRACTOR SHALL NOT BLOCK FLOW FROM
° CULVERT AND GREEN RIVER BRANCHES DURING
MATERIAL PLACEMENT OPERATIONS.
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5. ONLY BIODREGRADABLE FEATURES MAY BE LEFT IN
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/ / J iE ♦. a J J Cl Q
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REVISIONS
NORTH REV DATE BY AP DESCRIPTION DESIGNED BY: CORK,R. NORTH CAROLINA WILDLIFE RESOURCES COMMISSION A
T p �•y CAROLINA DRAWN BY: HOMER, D. LAKE ADGER NAVIGATION CHANNEL MAINTENANCE DREDGING 4
A �T� �-y ®Lr r , Know Whans below. CHECKED BY: REEMTS, M.
ANCHOR al�vi\ /' Call before you dig.
- IDEA i �`/ RESOURCES APPROVED BE DIN (COLA, W.
COMMISSION SCALE: AS NOTED
DATE: JANDARY2021 DREDGED MATERIAL PLACEMENT LAYOUT HEET# 7 of 11

LEGEND:
EXAMPLE COIR LOG OR HAYBALE LOCATION
8 EXAMPLE SILT CURTAIN OR SILT FENCE
n LOCATION
14�� PROJECT STATIONING
NAVIGATION CHANNEL DREDGE AREA
OQO APPROXIMATE EXTENTS
\ �..�
O�<cQ' \ ' / • • ' • � - — • — • — DREDGE AREA APPROXIMATE EXTENTS
APPROXIMATE LIMITS OF DISTURBANCE
TURBIDITY MONITORING LOCATION
CULVERT
\\
\ �\ DOWNSTREAM
TURBIDITY MONITORING
\. LAKEADGER �'\ STATION:
(FULL POOL ELEVATION 911.61') V N35.335345°
I \ W82.2233970 NORTH
LAKE ADGER
0 150 300
SCALE IN FEET
� � F
= PO
_ �O
O
V
r
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0 Z
UPSTREAM TURBIDITY
MONITORING STATION:
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W82.235823°
SOURCES:
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1. PHOTOGRAPH ©2019 AERIAL IMAGERY
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2. TOPOGRAPHIC SURVEY BY HAYESIJAMES
o
27 2
DATED AUGUST 018.
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N w
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V
LL to
DRAFT -NOT FOR CONSTRUCTION
REVISIONS
NORTH
DESIGNED BY: CORK,R.
NORTH CAROLINA WILDLIFE RESOURCES COMMISSION
C5
REV
DATE
BY
AP
DESCRIPTION
LAKE ADGER NAVIGATION CHANNEL MAINTENANCE DREDGING
��®�
CAROLINA
'
Knowwhaesbelow.
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DRAWN BY : HOLMER, D.
CHECKED BY: REEMTS, M.
7
- QEA(`�, ® �`�
�v
RESOURCES
APPROVED BY : DINICOLA, W.
COMMISSION
SCALE: AS NOTED
DATE: JANUARY2021
TURBIDITY MONITORING LOCATIONS
HEET# 8
of 11

CULVERT
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STAGING o
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APPROXIMATE AREA OF DISTURBANCE . .. . ..
FOR MATERIAL PLACEMENT 17.4 ACRES \ \
GR�E�R\vv /
s
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MAXIMUM APPROXIMATE IMPACTED AREAS (ACRES)
IMPACT TYPE
AREA TYPE
DESCRIPTION
Al A2 31
C1
DREDGING
PERMANENT DUE TO
OPEN WATER
AREA BETWEEN WETLAND DELINEATION EXTENTS
0.7 1.1 0.4
0.8
N/A
PLACED MATERIALS
AND CELL BOUNDARY
TEMPORARY BY
WETLAND
AREA BETWEEN WETLAND DELINEATION EXTENTS
2.0 2.2 >0.1
N/A
N/A
CONSTRUCTION ACTIVITIES
AND UPGRADIENT LIMITS OF DISTURBANCE
TEMPORARY BY
AREA BETWEEN CELL BOUNDARY AND
CONSTRUCTION ACTIVITIES
OPEN WATER
DOWNGRADIENT LIMITS OF DISTURBANCE
1.8
4.5
LEGEND:
PROPOSED DREDGED MATERIAL
Al
PLACEMENT AREA DESIGNATION
EXAMPLE COIR LOG OR HAYBALE LOCATION
S
EXAMPLE SILT CURTAIN OR SILT FENCE
LOCATION
-
— APPROXIMATE LIMITS OF DISTURBANCE -
PLACEMENT AREA
14+00
I
PROJECT STATIONING
NAVIGATION CHANNEL DREDGE AREA
APPROXIMATE EXTENTS
- • — • -
DREDGE AREA APPROXIMATE EXTENTS
— • • —
APPROXIMATE LIMITS OF DISTURBANCE
— — —
WETLAND DELINEATION
0
NORTH
0 80 160
SCALE IN FEET
NOTES:
1. PLACEMENT AREAS ARE APPROXIMATE,
CONTRACTOR TO INSTALL SEDIMENT CONTROL
FEATURES AS NEEDED TO CONTAIN SEDIMENT
WITHIN TARGET AREAS TO THE ELEVATIONS
SHOWN.
2. CONTRACTOR TO UTILIZE COMBINED COIR LOGS,
HAYBALES, SILT CURTAINS, SILT FENCES, OR OTHER
CONTROL STRUCTURES TO MANAGE SEDIMENTS
WITHIN PLACEMENT AREA EXTENTS.
3. CONTRACTOR MAY ADJUST ALIGNMENTS AS
NEEDED TO BALANCE PLACEMENT OPERATIONS
AND SEQUENCE THE WORK.
4. CONTRACTOR SHALL NOT BLOCK FLOW FROM
CULVERT AND GREEN RIVER BRANCHES DURING
MATERIAL PLACEMENT OPERATIONS.
5. ONLY BIODEGRADABLE FEATURES MAY BE LEFT IN
PLACE FOLLOWING MATERIAL PLACEMENT. ANY
SILT CURTAINS, SILT FENCES, ANCHORS, METAL
STAKING, OR OTHER INSTALLED ITEMS MUST
OTHERWISE BE REMOVED.
6. CONTRACTOR MATERIAL TRANSPORT LINE SHOULD
BE ROUTED THROUGH WORKAREAS IDENTIFIED
WHERE POSSIBLE.
7. TEMPORARY IMPACTS WILL BE MINIMIZED, WHERE
o
POSSIBLE, TO IMPACTS RELATED TO ALIGNMENT OF
HYDRAULIC DREDGING DISCHARGE HOSES,
> o
PEDESTRIAN ACCESS, AND MINIMAL SEEPAGE OF
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o w
STRUCTURE. STOCKPILING OF SEDIMENT ON THE
o a
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z o w
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z�
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(2019) DISTRIBUTION AIRBUS DS
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V
0
1
2. TOPOGRAPHIC SURVEY BY HAYESIJAMES DATED
Z
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V
N w
AUGUST 27, 2018.
o
1
QV
Z
DRAFT -NOT FOR CONSTRUCTION
ANCHOR
�v
- IDEA i �`/
NORTH
CAROLINA
,
/'
RESOURCES
COMMISSION
, KROW Whans below.
Call before you dig.
REVISIONS
DESIGNED BY: CORK,R.
DRAWN BY: HOLMER, D.
CHECKED BY: REEMTS, M.
APPROVED BE: DIN (COLA, W.
SCALE: AS NOTED
DATE: ,ANUARvzozi
NORTH CAROLINA WILDLIFE RESOURCES COMMISSION
C6
V
SHEET# 9 OF 11
REV
DATE
By
AP P D
DESCRIPTION
LAKE ADGER NAVIGATION CHANNEL MAINTENANCE DREDGING
IMPACTED AREAS

20" DIAMEI
COIR LOGS
fv
FAKE TO ONLY
FE NETTING
IEXISTING
SURFACE
JOINT DETAIL
NOT TO SCALE
20" DIAMEI
COIR LOGS
MI
STAKING DETAIL
NOT TO SCALE
NOTES:
1. COIR LOGS SHALL BE PLACED AS SHOWN ON DRAWING C4, AND IN A ROW WITH ENDS TIGHTLY ABUTTING ADJACENT COIR LOGS.
COIR LOGS SHALL BE USED WITH SILT CURTAINS AS SHOWN IN THESE COIR LOG AND SILT CURTAIN DETAILS AND DRAWING C4.
2. COIR LOGS SHALL BE SECURELY ANCHORED IN PLACE BY TWO STAKES DRIVEN THROUGH THE COIR LOG NETTING AS SHOWN IN
THE COIR LOG DETAIL. STAKES SHALL BE DRIVEN FLUSH WITH THE COIR LOG.
3. INSPECTION SHALL BE DAILYAND REPAIR/REPLACEMENT SHALL BE MADE PROMPTLY AS NEEDED.
4. COIR LOGS SHALL BE REMOVED AS DIRECTED BY THE ENGINEER
1 COIR LOG DETAIL
C07 SCALE: NOT TO SCALE
. Y 1'8„
't 't 't 't 't ' 'i.. % „IQ
(TYP.) TF
i 4i 4i 4i 4i 4i 4i 4i 4i 4i 4i 4i 4i 4i 4�
11 41 I I I I• 41 1 41 41 1 41 41 1'
i 4i 4Qi 4i 4i 4j� 44i 4i 4i 4iI 41 ' 18"
(TYP.)
,q r i 4i 4i 4i 4itl 41 4 41 41 CI 41 4i 4i 4i u
� TOP VIEW 6" (APPROX)
0
H Al
STAKE
PROTECTED AREA
AREA OF DISTURBANCE
STAKE TO ONLY
METAL CONNECTOR
HEAVY DUTY CORD SEWN IN SILT
SILT FENCE POST
2ATE NETTING
CABLE 1/8"0 MIN
FENCE FABRIC (TOP AND BOTTOM)
AND LOOPED AROUND POST. (SEE
MISTING
DETAIL "A" FOR TOP CORD TO
;URFACE
EVERY OTHER SILT FENCE POST)
2"x 2"x 4'-0" MAX OAK
POST DRIVEN INTO
SUPPORT NETTING (HEAVY DUTY
SILT FABRIC AND
TRENCH, SEE NOTE 2
PLASTIC MESH)
LOOP CABLE OVER POST
0
SILT FENCE FABRIC
DRIVEN COMPLETELY THROUGH BOTTOM ROW OF BALES
CED SEDIMENT UP TO 2" BELOW HAYBALES
:ES, 2 PER BALE, DRIVEN AT LEAST 1.5' OR
SEDIMENT INTO COMPETENT GROUND
16" (TYP.)
I ANGLE FIRST STAKE TOWARD PREVIOUSLY LAID BALE
FRONT VIEW
NOTES:
1. HAYBALES SHALL BE PLACED AS SHOWN ON DRAWING C4, AND IN A ROW WITH ENDS TIGHTLY ABUTTING THE ADJACENT HAYBALES. HAYBALES SHALL BE
USED WITH SILT FENCES AS SHOWN IN HAYBALES AND SILT FENCE DETAIL UNLESS OTHERWISE INDICATED ON DRAWING C4.
2. EACH HAYBALE SHALL BE PLACED SO THE BINDINGS ARE HORIZONTAL.
3. HAYBALES SHALL BE SECURELY ANCHORED IN PLACE BY TWO STAKES DRIVEN THROUGH THE HAYBALE. THE FIRST STAKE IN EACH HAYBALE SHALL BE
DRIVEN TOWARD THE PREVIOUSLY LAID HAYBALE AT AN ANGLE TO FORCE THE HAYBALES TOGETHER. STAKES SHALL BE DRIVEN FLUSH WITH THE HAYBALE.
4. INSPECTION SHALL BE DAILYAND REPAIR/REPLACEMENT SHALL BE MADE PROMPTLY AS NEEDED.
5. HAYBALES SHALL BE REMOVED AS DIRECTED BY THE ENGINEER.
6. KEY HAYBALES 6'' INTO SOFT SEDIMENT.
3 TYPICAL DOUBLE STACK HAYBALE DETAIL
C07 NOT TO SCALE
NORTH
CAROLINA ,
ANCHOR � � Know Wnacsbelow.
' CBII before you dig.
RESOURCES
COMPACTED BACKFILL IN TRENCH
EXISTING GRADE
ANCHORBUOY
BUOY —
NYLON
ROPE
ANCHOR
DEVICE
1
12" MIN
FLOTATION
DEVICE
SILT CURTAIN
CHAIN
CIE1C \/IC\A/
GENERAL NOTES:
1. THE DETAILS SHOWN IN THESE ENGINEERING DRAWINGS ARE CONCEPTUAL IN
NATURE. THE CONTRACTOR SELECTED METHODOLOGIES FOR CONTAINING
DREDGED MATERIAL AND TURBIDITY CONTROL WILL BE DETAILED IN THE
DREDGING WORK PLAN TO BE APPROVED BY NCWRC.
2. THE CONTRACTOR METHODOLOGIES FOR CONTAINING DREDGED MATERIAL
AND TURBIDITY CONTROL SHALL BE ALTERED TO MEET PROJECT OBJECTIVES
AND REQUIREMENTS, AS DETERMINED BY NCWRC DURING PERFORMANCE OF
THE WORK. CONTAINMENT OF PLACED SEDIMENT WILL AIM TO PREVENT THE
MIGRATION OF PLACED MATERIAL INTO DELINEATED WETLANDS ADJACENT TO
THE PLACEMENT AREAS.
REVISIONS
DESCRIPTION
FILTER FABRIC
UNDISTURBED GROUND (TYP)
DETAIL A
BURY FLAP OF FILTER FABRIC NOTE:
IN BOTTOM OF TRENCH POSTS FOR SILT FENCE MUST BE LOCATED
EIGHT FEET MAXIMUM. ON -CENTER.
z SILT FENCE DETAIL
C07 SCALE: NOT TO SCALE
SILT CURTAIN
TOP LOAD LINE TOP LOAD LINE
(OPTIONAL) WATER LEVEL (OPTIONAL) CONNECTOR
WATER LEVEL
..jFLOTATION DEVICE
1'-5' (TYP)
BALLAST LINE (GALVANIZED CHAIN)
BOTTOM SEDIMENT
CONNECTION
GROMMETS 1'-5' (TYP)
V-5
(TYP)
............
BALLAST LINE BOTTOM SEDIMENT
(GALVANIZED CHAIN)
.. .n. ... .. .. . ...:'.Y.! ... .. .. ..
CC/'TInKI \/IC\A/
NOTE:
IF THE SEDIMENT ALONG THE SILT CURTAIN ALIGNMENT IS EXPOSED DURING
CONSTRUCTION, SILT FENCES SHALL BE USED IN PLACE OF SILT CURTAINS.
TYPICAL SILT CURTAIN DETAIL
o
z
C07 NOT TO SCALE
O m
zo
V LL V
z — V
w
O V
LL�
x
Q V
z
DRAFT -NOT FOR CONSTRUCTION
DESIGNED BY: CORK, R.
NORTH CAROLINA WILDLIFE RESOURCES COMMISSION
��
LAKE ADGER NAVIGATION CHANNEL MAINTENANCE DREDGING
DRAWN BY: HOLMER, D.
CHECKED BY: REEMTS, M.
APPROVED BY: DINICOLA, W.
SCALE: AS NOTED
DETAILS
DATEJANUARY 2021
:
SHEET# 10
OF ff

TABLE 1: PLANTING ELEVATIONS TABLE 2: EMERGENT VEGETATION SPECIES TABLE 4: TREE AND SHRUB SPECIES
PLANTING ZONE
MIN. ELEVATION (FT, NAVD88)
MAX. ELEVATION (FT, NAVD88)
A
912.0
913.7
B
911.3
912.10
USE PILOT STAKE TO MAKE
HOLE, AND PLANT PLUG
DIRECTLY IN BACKFILL
PLANT FLUSH
1 WETLAND PLANTING DETAIL
NOT TO SCALE
CONTAINERIZED TREE OR
SHRUB (TYP)
SET ROOT CROWN AT 1"
ABOVE FINISHED GRADE
SHRUB PLANTING PIT
PREPARATION =
ROOTBALL DEPTH &
WIDTH PLUS V-0"
MIN 3" MULCH ADDITIONAL ALL SIDES
FINISH GRADE
n
ROOTBALL + + + + + + + TOPSOIL
DEPTH `++++i +++++ + + +
+ + + + + + REMOVE CONTAINER
+ + + + COMPLETELY
UNDISTURBED SUBGRADE ROOTBALL + V-0"MIN
(PROVIDES FIRM BASE SO THAT ALL SIDES
ROOTBALL WILL NOT SINK)
NOTE:
STAKE ALL TREES 4 FT & TALLER.
z SMALL TREE/SHRUB DETAIL
NOT TO SCALE
NORTH
CAROLINA
/� %, CHO Know what'sb0I0W.
r�.�call before youdig.
QEA�v RESOURCES
Common Name
Scientific Name
Planting Zone
Broadleaf Cattail
Typha latifolia
B
Common Arrowhead
Sagittaria latifolia
B
Wool Grass
Scirpus cyperinus
A, B
Soft Stem Bulrush
Schoenoplectus
tabernaemontani
A B
Fringed Sedge
Carexcrinita
A
Pickerelweed
Pontederia cordata
B
Soft Rush
Juncus effusus
A, B
NOTES:
1. ALL LISTED PLANTS ARE OBLIGATED WETLAND PLANTS
z. PLANTS SHALL BE 2-INCH PLUGS AND PLANTED AT A
DENSITY OF 10,900 (z-FOOT SPACING) PER ACRE.
3. SIMILAR SPECIES CAN BE SUBSTITUTED BASED ON SITE
CONDITIONS WITH APPROVAL OF THE CONSTRUCTION
MANAGER.
4. A 1-YEAR WARRANTY SHALL APPLY TO ALL EMERGENT
VEGETATION SPECIES. AT THE END OF 1-YEAR, ANY
EMERGENT SPECIES THAT DOES NOT SURVIVE SHALL
BE REPLACED BY THE CONTRACTOR WITH A SPECIES
PERFORMING WELL AT THE SITE.
TABLE 3: WETLAND SEED MIX
Common Name
Scientific Name
Planting Zone
Common Water Plantain
Alisma subcordatum
A, B
Swamp Milkweed
Asclepias incarnata
A, B
Common Hop Sedge
Carexlupulina
A, B
Lance -Fruited Oval Sedge
Carexscoparia
A, B
Brown Fox Sedge
Carex vulpinoidea
A, B
Turtlehead
Chelone glabra
A, B
Common Wood Reed
Cinna arundinacea
A, B
Flat -Top Aster
Doellingeria umbellata
A, B
Virginia Wild Rye
Elymus virginicus
A, B
Common Boneset
Eupatorium perfoliatum
A, B
Hollow Joe-Pye Weed
Eutrochium fistulosum
A, B
Sneezeweed
Helenium autumnale
A, B
False Sunflower
Heliopsis helianthoides
A, B
Common Rush
Juncus effusus
A, B
Great Blue Lobelia
Lobelia siphilitica
A, B
Monkey Flower
Mimulus ringens
A, B
Ditch Stonecrop
Penthorum sedoides
A, B
Dark Green Rush
Scirpus atrovirens
A, B
Wool Grass
Scirpus cyperinus
A, B
Side -Flowering Aster
Symphyotrichum lateriflorum
A, B
New England Aster
Symphyotrichum
novae-angliae
A, B
Marsh Shield Fen
Thelypteris palustris
A, B
Blue Vervain
Verbena hastata
A, B
Boneset
Eupatorium perfaliatum
A, B
Needle Spikerush
Eleocharis acicularis
A, B
Silky Willow
Salixsericea
A, B
NOTE:
A 1-YEAR WARRANTY SHALL APPLY TO ALL SEEDING AREAS.
AT THE END OF 1-YEAR, ANY BARE AREAS GREATER THAN 5
SQUARE FEET SHALL BE RESEEDED BY THE CONTRACTOR
WITH A SPECIES PERFORMING WELL AT THE SITE.
REVISIONS
VI DATE I BY IAPPDI DESCRIPTION
Common Name Scientific Name Planting Zone
Trees
American Elm
Ulmus americana
A
River Birch
Betula nigra
A
Black Willow
Salixnigra
A
Red Maple
Acer rubrum
A
Box Elder
Acer negundo
A
American Sycamore
Plantanus occidentalis
A
American Persimmon
Diospyros viginiana
A
Black Gum
Nyssa sylvatica
A
Shrubs
Spicebush
Lindera benzoin
A
Smooth Alder
Alnus serrulata
A
Silky Dogwood
Comus amomun
A
NOTES:
1. TREES SHALL BE 5-GALLON CONTAINER AND
INSTALLED ON 25 FT CENTERS.
z. SHRUBS SHALL BE 1-GALLON CONTAINER AND
INSTALLED ON 10 FT CENTERS.
3. A 1-YEAR WARRANTY SHALL APPLY TO ALL TREES AND
SHRUBS. AT THE END OF 1 YEAR, ANY TREE OR SHRUB
THAT DOES NOT SURVIVE SHALL BE REPLACED BY THE
CONTRACTOR WITH A SPECIES PERFORMING WELL AT
THE SITE.
REFERENCE WETLAND DATA LOCATIONS
NAVIGATION CHANNEL
NORTH
LAKE ADGER
RP-9 s 1
At
1. • ..}�e .q S . �, s;,w:
x >.
SCALE IN FEET
SOURCE: AERIAL PHOTOGRAPH ©2020 MICROSOFT
CORPORATION ©2020 DIGITALGLOBE ©CNESS (2020)
DISTRIBUTION AIRBUS IDS
LEGEND:
*RP_1 REFERENCE WETLAND DATA LOCATION
AND DESIGNATION
NOTE:
VEGETATION SPECIES AND WETLAND SEED MIXES
LISTED IN TABLES z AND 3 ARE GENERALLY BASED ON
THE INFORMATION COLLECTED DURING THE
REFERENCE WETLAND SURVEY COMPLETED BY
CLEARWATER ENVIRONMENTAL CONSULTANTS, INC.,
ON AUGUST 21-22, z018.
REFERENCE
ELEVATION (FT, NAVD88)
RP-1
913.2
RP-2
911.9
RP-3
913.7
RP-4
912.2
RP-5
913.4
RP-6
911.3
DRAFT -NOT FOR CONSTRUCTION
DESIGNED BY: CORK, R. NORTH CAROLINA WILDLIFE RESOURCES COMMISSION C8
DRAWN BY: HOLMER, D. LAKE ADGER NAVIGATION CHANNEL MAINTENANCE DREDGING
CHECKED BY: REEMTS, M.
APPROVED BY: DINICOLA, W.
SCALE: AS NOTED
DATE: JANUARY2021 VEGETATION PLANTING DETAILS SHEET# 11 OF 11

Attachment C
Lake Adger Navigation Channel
Maintenance Dredging Project Turbidity
Monitoring Plan

Anchor QEA of North Carolina, PLLC ANCHOR
231 Haywood Street�z Asheville, North Carolina 28801 QEA �i
828.281.3350
TURBIDITY MONITORING PLAN January 12, 2021
Lake Adger Navigation Channel Maintenance Dredging Project
Anchor QEA of North Carolina, PLLC, in Consultation with North Carolina Wildlife Resources
Commission, and North Carolina Department of Environmental Quality Division of Water
Resources
A plan for maintenance dredging of the public boat ramp and marina navigation channel has been
developed by engineering consultant Anchor QEA of North Carolina, PLLC in consultation with North
Carolina Wildlife Resources Commission (NCWRC), and North Carolina Department of Environmental
Quality (NCDEQ) Division of Water Resources (DWR). It is proposed to remove 6,800 cubic yards of
soft sediment from the navigation channel and place the soft sediment within the Lake Adger
footprint as beneficial use for habitat creation.
Turbidity will be monitored by the contractor during project dredging and sediment placement
activities. Turbidity will be monitored using hand-held or automated turbidity meters to record
Nephelometric Turbidity Units (NTU) at a fixed upstream location (near the sediment placement area
but upstream of the influence of project activities) and a fixed downstream location that allows for
some in -lake mixing; approximate monitoring locations are shown on sheet C5 of the 90% Design
Set (attached) submitted with the Response to USACE Comments and Provision of Additional
Information'.
During the first week of operations, data will be collected daily at the upstream background location,
and twice daily (once 2 to 3 hours after daily operations have started, and again during the last 1 to
2 hours of daily operations) at the downstream monitoring location. If turbidity levels of >50 NTU are
not measured at the downstream monitoring location during the first week, then monitoring will be
reduced to once daily, taken during the last 1 to 2 hours of in -lake work for the remainder of the
maintenance dredging project or until excessive turbidity is measured. Turbidity will be recorded and
a turbidity log of all turbidity measurements will be sent to NCWRC and NC Division of Water
Resources (NCWWR) at the end of each work week.
The North Carolina turbidity standard is 25 NTU; attempts to keep turbidity at or below this level will
be made. An operations protocol that describes corrective actions and reporting requirements for
various turbidity scenarios is outlined in Table 1. Corrective actions include adjustments to
operations and best management practices (BMPs), examples of which are as follows:
• Performing dredging operations within a turbidity curtain system
• Adjusting the rate of the work to reduce suspended sediment
1 Anchor QEA, 2021. Letter to: David Brown, USACE. Regarding: Response to USACE Comments and Provision of Additional
Information. Lake Adger Navigation Channel Maintenance Dredging Project. January 15, 2021.

• Optimizing the number of dredge bites that will achieve target dredge depth to increase
sediment capture
• Controlling the rate of dredging, including the rate of raising and lowering of the mechanical
dredge through the water, particularly when the dredge is close to the bottom of the river
• Not performing excessive and rapid movement of the dredge, such as dragging the dredge
on the bottom or reopening the bucket after initial closure
• Conducting pre -dredging removal of debris that could interfere with dredging
• Removing debris from the riverbed in a slow and steady manner
• Minimizing over -penetration of the dredge bucket to prevent overfilling
• Completely closing (to the extent possible) the dredge bucket before it is lifted through the
water column
• Moving dredge continuously and in the most efficient path to the barge once the dredge
breaks the water surface
• Conducting vessel operations in a manner that minimizes potential resuspension due to
vessel propeller wash (propwash)
Table 1
Turbidity Monitoring and Corrective Action Protocols for Lake Adger Dredging and Sediment
Placement
Turbidity Levels
Corrective Action
Reporting
Background
Downstream
<_25 NTU
_<25 NTU
None
Weekly
<_25 NTU
26-50 NTU
Evaluate, adjust BMPs to lower
Weekly
turbidity levels below 25 NTU.
Evaluate, adjust BMPs. If turbidity
Report to NCDWR within 24 hours
<_25 NTU
>50 NTU
doesn't drop to <50 NTU within
of turbidity measurement
24 hours, stop work
<_25 NTU above
Evaluate, adjust BMPs to lower
>25 NTU
background level
turbidity levels to background levels
Weekly
or below
Evaluate, adjust BMPs. If turbidity
>25 NTU
>25 NTU above
doesn't drop to <25 NTU above
Report to NCDWR within 24 hours
background level
background level within 24 hours,
of turbidity measurement
stop work
Attachment
Sheet C5 of 90% Design Set —Turbidity Monitoring Locations

LEGEND:
EXAMPLE COIR LOG OR HAYBALE LOCATION
8 EXAMPLE SILT CURTAIN OR SILT FENCE
n LOCATION
14�� PROJECT STATIONING
NAVIGATION CHANNEL DREDGE AREA
OQO APPROXIMATE EXTENTS
\ �..�
O�<cQ' \ ' / • • ' • � - — • — • — DREDGE AREA APPROXIMATE EXTENTS
APPROXIMATE LIMITS OF DISTURBANCE
TURBIDITY MONITORING LOCATION
CULVERT
\\
\ �\ DOWNSTREAM
TURBIDITY MONITORING
\. LAKEADGER �'\ STATION:
(FULL POOL ELEVATION 911.61') V N35.335345°
I \ W82.2233970 NORTH
LAKE ADGER
0 150 300
SCALE IN FEET
� � F
= PO
_ �O
O
V
r
� O
0 Z
UPSTREAM TURBIDITY
MONITORING STATION:
w
N 35.330801 °
z o
W82.235823°
SOURCES:
Q
=
a z m
i
1. PHOTOGRAPH ©2019 AERIAL IMAGERY
N RIVER
(NC ONE MAP)
Y
i GREE
_ r .... _ ;;. -
_ ._. _ _ m
00
2. TOPOGRAPHIC SURVEY BY HAYESIJAMES
o
27 2
DATED AUGUST 018.
z o
LL
J
Z V
w -
N w
-
w
V
LL to
DRAFT -NOT FOR CONSTRUCTION
REVISIONS
NORTH
DESIGNED BY: CORK,R.
NORTH CAROLINA WILDLIFE RESOURCES COMMISSION
C5
REV
DATE
BY
AP
DESCRIPTION
LAKE ADGER NAVIGATION CHANNEL MAINTENANCE DREDGING
��®�
CAROLINA
'
Knowwhaesbelow.
Call betas you dig.
DRAWN BY : HOLMER, D.
CHECKED BY: REEMTS, M.
7
- QEA(`�, ® �`�
�v
RESOURCES
APPROVED BY : DINICOLA, W.
COMMISSION
SCALE: AS NOTED
DATE: JANUARY2021
TURBIDITY MONITORING LOCATIONS
HEET# 8
of 11