20230864 Ver 1_ePCN Support Binder Dam-22A_20230609

MOGENSEN MITIGATION, INC. P4W
ENVIRONMENTAL CONSULTING MOGENSEN W rIGATION. INC
MMI - RALEIGH OFFICE
104 East Chestnut Avenue MMI MAIN OFFICE -- CHARLOTTE
Wake Forest, NC 27587 PO Box 690429, Charlotte, NC 28227
Tel: [phone] [e-mail] Tel: [phone] [e-mail]
Preliminary Jurisdictional Determination (PJD) and Pre -Construction Notification (PCN)
Deep Creek Watershed Flood Control Dam 22A Repair, Yadkin County, NC
09 June 2023
Prepared For:
Yadkin County Soil & Water Conservation District
2051 Agricultural Way, Suite 207
Yadkinville, NC 27055
For Submittal To:
US Army Corps of Engineers NC Division of Water Resources
Asheville Regulatory Field Office 401 Buffer Permitting Unit
151 Patton Avenue, Room 208
Asheville, North Carolina 28801
Introduction and Site Description
450 Hanes Mill Road, Suite 300
Winston-Salem, NC 27105
On behalf of the Yadkin County Soil & Water Conservation District (SWCD), Mogensen Mitigation Inc
(MMI) is submitting this Section 404-401 Joint PCN application (NWP-3) for the proposed repair work
at Deep Creek Dam 22A in western Yadkin County NC (Figure 1). The dam was built for flood control
by the US Department of Agriculture (USDA) in the 1960s on an unnamed tributary of South Deep
Creek at Latitude 36.0884, Longitude-80.7276. It is one of a network of 15 flood -control dams in the
Deep Creek watershed planned and authorized by USDA in 1958. Dam 22A is on private land but the
dam is owned by SWCD which has a permanent easement for maintaining and operating the facility.
MMI environmental scientists mapped potential jurisdictional waters around the dam and lake based
on aerial images and photographs and notes provided by Schnabel Engineering. The lake upstream of
Environmental Field Studies ■ Wetland & Stream Delineation ■ 404-401 Permits ■ Mitigation Plans & Banking

MOGENSEN MITIGATION, INC.
the dam and plunge pool below the principal spillway outlet are open waters, and the channel below
the plunge pool is a perennial stream. Tributary streams and wetlands along the upper portions of the
lake are 200 feet or farther beyond the proposed impact area. Jurisdictional waters that will be
directly affected are open waters only.
Work Description and Impacts
Schnabel Engineering evaluated the condition of all USDA dams in the Deep Creek watershed and
identified 10 dams that need repair work on and around their principal spillway risers, including low-
level drain gates, trash racks, manhole covers, ladders, and sediment excavation. The sediment
excavation and riser repair work will be conducted by either of two methods, to be determined by the
contractor on a case -by -case basis:
Alternative A: Maintain Full Pool
1. Install the temporary construction entrance (crushed rock) along the route to the riser work area
and establish the staging area and erosion and sediment control measures in accordance with the
construction drawings and technical specifications.
2. Plug the principal spillway conduit pipe to maintain full pool elevation. Outflow will be routed over
the auxiliary spillway during the construction work. Install a temporary turbidity curtain in the plunge
pool area below the dam.
3. Use a boat -mounted hydraulic dredge to remove sediment within the designated area around the
principal spillway riser to the depth needed to facilitate replacement of the riser slide gate. Sediment
slope around the riser after dredging shall be no steeper than 5 to 1 horizontal to vertical to prevent
slumping, as shown on the sediment removal plan sheet.
4. The hydraulic dredged sediment and water mixture will be pumped into sediment filter bags set up
along the shore of the lake with erosion control measures to retain the sediment and allow nearly
sediment -free water to flow back into the lake.
5. The dewatered sediment will be trucked to the designated sediment disposal site and spread on
existing farmland. The sediment disposal site plan also includes erosion and sedimentation control
measures. No streams, wetlands, or forest lands will be directly affected by the sediment disposal.
6. The low-level gate replacement work will be conducted under water. Remove the existing low stage
trash rack and cut all old anchor bolts to be flush with riser concrete surfaces. Remove the existing
slide gate, steel stem, stem guides, and operator. Install new stainless steel wedge type anchor bolts
Page 2

MOGENSEN MITIGATION, INC.
and new cast iron slide gate, stainless steel stem, and operator. New stem guides, bolts, and anchors
shall be located at least 6-in from any existing stem guide bolt/hole.
7. Replaced structures and demolition debris will be disposed of at a construction debris facility
regulated by the Division of Solid Waste Management.
8. Remove all temporary erosion and sediment control devices and filter bags. Apply seeding to all
disturbed areas in the work area and along the access road in accordance with the technical
specifications.
Alternative B: Drain the Lake
1. Install the temporary construction entrance (crushed rock) along the route to the riser work area
and establish the staging area and erosion and sediment control measures in accordance with the
construction drawings and technical specifications.
2. Lower the water level in the lake by not more than one foot per day using the drain gate if operable
and/or pumps or siphons. The reservoir will be maintained in a drained condition for the duration of
the riser repairs. Install a temporary turbidity curtain in the plunge pool area below the dam.
3. Remove sediment and debris from the designated area around the riser using excavators in the
drained lake bed. Sediment slope around the riser after dredging shall be no steeper than 5 to 1
horizontal to vertical to prevent slumping, as shown in the sediment removal plans. Erosion control
measures such as temporary basins, check dams, sediment filter bags, and/or other appropriate
measures as determined by the contractor will be used in the sediment dewatering area to minimize
turbidity and sedimentation into the receiving stream below the dam.
4. Install a small temporary cofferdam around the riser base using either riprap and crushed rock fill or
a synthetic water -filled bag such as an "AquaDam" to keep sediment from slumping back into the work
area. The contractor will determine the appropriate method for the site; either method will occupy
not more than 200 square feet of lake bed within the excavation area.
5. The dewatered sediment will be trucked to the designated sediment disposal site and spread on
existing farmland. The sediment disposal site plan also includes erosion and sedimentation control
measures. No streams, wetlands, or forest lands will be directly affected by the sediment disposal.
6. Remove the existing low stage trash rack and cut all old anchor bolts to be flush with riser concrete
surfaces. Remove the existing slide gate, steel stem, stem guides, and operator. Install new stainless
steel wedge type anchor bolts and new cast iron slide gate, stainless steel stem, and operator. New
stem guides, bolts, and anchors shall be located at least 6-in from any existing stem guide bolt/hole.
Page 3

MOGENSEN MITIGATION, INC.
7. Replaced structures and demolition debris will be disposed of at a construction debris facility
regulated by the Division of Solid Waste Management.
8. Remove all temporary erosion and sediment control devices and filter bags. Apply seeding to all
disturbed areas in the work area and along the access road in accordance with the technical
specifications. Maintain a minimum baseflow in the receiving stream to protect aquatic life while
allowing the lake to refill.
The temporary access road from Arnold Road to Dam 22A will use existing dirt roads through upland
woods, agricultural fields, and the auxiliary spillway which is maintained as mowed grass. No tree
clearing or other disturbance to natural plant communities will be needed. The area of proposed
sediment excavation on the lake bed extends 40 to 50 feet around the riser base and covers
approximately 0.19 acre. The temporary cofferdam fill around the riser will occupy less than 200
square feet (0.005 acre) within the excavated area. Wetlands adjacent to the upper portion of the lake
may be temporarily dewatered if construction alternative B is selected.
Impact #
Feature
Water Type
acre
Temp / Perm
Impact Purpose
0-1
Lake
open water
0.19
temp
sediment excavation
0-2
Lake
open water
0.005
temp
temporary cofferdam
Please call or email me if you need any further information.
Sincerely,
Gerald Pottern, M.S.
Senior Biologist
Mogensen Mitigation Inc
Office Land Line: 919-556-8845
Mobile / Text: 919-649-6506
[e-mail]
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Page 4

MOGENSEN MITIGATION, INC.
ATTACHMENTS
Cover Letter for ePCN Application
USACE / NCDWR Joint Permit Application ePCN
Agent Authorization Form
USDA Permanent Easement
Figure 1. Project vicinity map, Deep Creek flood control dam riser repairs, Yadkin County NC.
Figure 2. Deep Creek Dam 22A - Dam site and parcel map, Yadkin County NC.
Figure 3. Deep Creek Dam 22A sediment dredging area map.
Figure 4. Site access road and staging area plan, Deep Creek Dam 22A.
Figure 5. Dam 22A riser profile, sediment dredging, and sediment disposal area SD-1.
Figure 6. Riprap inlet protection around spillway riser and sediment filter bag layout.
Figure 7. NC-SHPO historic structures, Deep Creek Dams 21, 22A, 23, 30A, and sediment disposal site.
Figure 8. Jurisdictional waters and wetlands in the vicinity of Deep Creek Dam 22A.
Page 5

AGENT AUTHORIZATION FORM for US -ACE / NC-DEQ Permitting
PROJECT NAME: Deep Creek Watershed USDA Flood Control Dams, Yadkin County
PROPERTY LEGAL DESCRIPTION: see attached list below
PARCEL ID: see attached list below
STREET ADDRESS: see attached list below
PROPERTY OWNER: Yadkin County Soil & Water Conservation Distict
The undersigned, registered property owners of the above noted property, do hereby authorize:
Gerald Pottern of Mogensen Mitigation Inc (MMI)
(Contractor / Agent) (Name of consulting firm)
to act on my behalf and take all actions necessary for the processing, issuance and acceptance of this permit or
certification and any and all standard and special conditions attached.
By signing below, I authorize representatives of the U.S. Army Corps of Engineers (Corps) and NC Division of
Environmental Quality (DEQ) to enter upon the property herein described for the purpose of conducting on -site
investigations, if necessary, and issuing a jurisdictional determination pursuant to Section 404 of the Clean
Waters Act and/or Section 10 of the Rivers and Harbors Act of 1899. I, the undersigned, am the duly authorized
owner of record of the property identified herein.
PROPERTY OWNER ADDRESS (if different than property above):
Yadkin County Soil and Water Conservation District
2051 Agricultural WU, East Elm St, Yadkinville NC 27055
Telephone: [phone] Email: jwalker(a�yadkincountync.gov
Jason Walker, Director, Yadkin SWCD
Print Name 1
zl� �� - -
Authorized Signature 1
Date., -7

PROPERTIES, ADDRESSES, OWNERS, and PARCEL ID NUMBERS
Yadkin County SWCD has permanent easements on these properties for operating and maintaining the USDA
flood -control dams, recorded between 1959 and 1966. The original easement document for each dam is
included with the PCN application.
Dam #
Parcel
ID#
Site Address
Current Owner
Deed Ref
1959-1966 owner name
on easement
21
154243
2225 Helton Rd
Chamberlain, Lenuel
834 / 422
Burchette, Otto & Daisy
22A
119065
2804 Arnold Rd
Arnold, William T
880 / 252
Arnold, William
23
120760
Bethel Church Rd
Chamberlain, Lenuel F
1278 / 606
Gough, C.A.
30A
129175
1428 Hoots Rd
Allen, Francis Eugene
1158 / 334
Carlton, E.C.
6B
118133
Ralph Rd
Reavis, Marie
92 / 491
19A
121522
1913 Weatherman Rd
Casstevens, Gray
66 / 535
Casstevens, Gray
12
119786
Morgan Rd
Ladd Family Land, LLC
1208 / 136
Weatherman, Vallie
15B
131388
Abraham Rd
Shore, Rodney Gray
1298 / 374
Caudle, Twiman & Helen
24
131407
2300 Sanders Ridge Ln
Shore, Neil Arnie
917 / 549
Shore, Carl & Beatrice
10
120272
Sprouse Rd
Moxley, Marcus L
942 / 157
Wooten, Roy & Martha

G,liver ,
22
KNEW -ALL KEN IIY THESE PRESENTS that the tu�de�°,���n�� £off gold .a�c1.valuable
considerations, the receipt"",whereof, is hereby acknowledged,
William So .,Arnold and
of ' Ham toravi ll,e 4 N. C. hereinafter called Garantor' .s does ,hereby grant
Address ;
bargain., -sell, ;.convdyOnd reI-ease unto ., d�.�.n Soya Conservation
.:,District' hereinafter called Grantee, an easemant :ire ovor and upon % aft
ct pnwox �svo fir Ii
acresof landtuated in the 0ounty'pf, <-l�adkin ,,,,,,,g State of North Carolina, to Wit:
That piece of laid containing 33 acres more .�y_Ing,approx mately 1,5
miles southeast of Hamptonviile _and 'bounded_'br the .l:an,ds of William Gray
W.00teny-B. 13, Bjaro'hette, W. A. Arnold Estite, Arthur Wood, Mamie C. Gough,
Courtney Junction Lumber Company and Theo Woad,
For the installation, operation, maintenance and in.sgeet'Lon of"the follow
described works of improvement and for the storage of stators that may be .impotulded
by any dam or other reservoir structure described below.*
Storage pool for imppunded water.
Flood water pool.
1, In_ the'.
event the above dosc* dd, or�cs :adf x �o,V,*,re -not tasti d
i within 10 years from the date hereof, the rights and pr ,rileges herein granted
r.te grC��for(s)9 his heirs andshallat.-once axy
asgi.gns..
2. This easement includes the right of ingress arad. egress' at any time over and
.upon, the above . described land of.. the grantor(s) and any oth," ;land of the
, _,.grantor(s) adjoining said land,
3. There is ,reserved to the grantor(s), his hears and assigns, the right and
privilege "to use the above described land of the grantors) at any time, in any
manner.. and • for. any purpose not inconsistent with the full Lase and enjoyment by
the :grantee, its successors and., assigns, of .the rights and privileges herein
.
4. The rights and privileges herein granted are subject to alleasements, rights-�
of -way, mineral reservations, or_other rights now outstanding in third pant s.
. The ,grantee is °:responsiblo far operating and maintaining'the above 'de.soribed
work
P -of., -improvement.
€. Special provisions;
a T'he_:grantor(s) agrees .,not_.to- use, graze,, or Permit cutting of grass on
.or_wi.:thin, the area of the d.am (or other impra7ements) enclosed by wire fence,
except upon written permission of and upon the terms specified by the
authorized representative of the sponsoring local organization,

-,2-
BOOK 162 PACE
223
b ,The ar tams) 'agrees not to place any screen ,or other obstruction
laround the outlets installed in the dam..
WITI�ES .
PR BY SUBSCRIBING 7WIT1,TESS
STATE CE--!NQ ,TH CAROLINA
.COUNTY QF Yadkin
T i/l�s.e� :1°VGt r a�i r dt i �c Y e
Officia title of officer taking proof
of Yadkin County, State pf North Carolina, certify that
eDri .. Iarcti:t� personnally appeared .tef'ore.- rRe .this. ;�Y.,, and duly wsn,
r Name of subscribing witness
s , =stated .that ,in bis presence, . William S Arnold and D2iS, Arn ' d
signed the foregoing instruments
WITNBSS ;ray -hand..and. oMcial seal., ,this day. of Oct l9 •
• _- t,-, i�a+,N FiiP4YPIlflf 'f
�14
.E
l c car,,+egistr;3. tion ;on the
,c and registered
VC=-"Jd.-"Q
STATE OF NORTH CAROLINA, YAC KIN COUtN1�1
The foregoing.���_�,.�=-��./
a Notary PUb,+yicry of � � �-',�I°��t � �n..,...1p. p� F'County,
yly�tq�tp�In tt�y,-yy
tL
with the cerfitiCates be, regi.�tered
Wilms® ray hand sad offio�a_fA.:ai,
r
X&I `9'R
L, �s�.6 , 1.. a.� M _ /-1�
eels, on page
County, N C.

LIST OF FIGURES
Figure 1. Project vicinity map, Deep Creek flood control dam riser repairs, Yadkin County NC.
Figure 2. Deep Creek Dam 22A - Dam site and parcel map, Yadkin County NC.
Figure 3. Deep Creek Dam 22A sediment dredging area map.
Figure 4. Site access road and staging area plan, Deep Creek Dam 22A.
Figure 5. Dam 22A riser profile, sediment dredging, and sediment disposal area SD-1.
Figure 6. Riprap inlet protection around spillway riser and sediment filter bag layout.
Figure 7. NC-SHPO historic structures, Deep Creek Dams 21, 22A, 23, 30A, and sediment disposal site.
Figure 8. Jurisdictional waters and wetlands in the vicinity of Deep Creek Dam 22A.

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Figure 1. Project vicinity map, Deep Creek flood control dam riser repairs, Yadkin County NC. USDA dam numbers in black;
sediment disposal sites in red; USGS watershed HUC numbers in blue.

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71.
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J Dam 22A
Figure 2. Deep Creek Dam 22A - Dam site and parcel map, Yadkin County NC
Figure 3. Dam 22A sediment dredging area map. Impact = 105 x 80 ft = 0.19 acre open waters. No stream or wetland impact.

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