20200689 Ver 1_Ward Mill Dam Final Plans 1-5-21_sealed_20220202

Y
Ward Mill Dam Removal Project
Watauga River Basin 06010103
Watauga County, North Carolina
for
Watauga Soil and Water Conservation District, Blue Ridge Resource Conservation and
Development Council, American Rivers, and MountainTrue
73o
<73
730
yG
0
7
SITE
W ATAUGA
RIVER RD
Vicinity Map
Not to Scale
BEFORE YOU DIG!
CALL 1-800-632-4949
N.C. ONE -CALL CENTER
IT'S THE LAW!
FINAL PLANS
ISSUED FOR CONSTRUCTION
1/5/2021
Sheet Index
Title Sheet
General Notes and Symbols
Existing Site Plan
Dam Diagrams
Dam Removal Plans
River Stabilization
Planting Sheets
Erosion and Sediment Control
Details
Project Directory
0.1
0.2
0.3
1.1-1.3
2.1-2.3
3.1
4.1
5.1
6.0-6.4
Engineering:
Wildlands Engineering, Inc
License No. F-0831
312 W. Millbrook Rd, Suite 225
Raleigh, NC 27609
Angela Allen, PE, Project Engineer
919-851-9986
Surveying:
Kee Mapping and Surveying, PA
88 Central Avenue
Asheville, NC 28801
Phillip B. Kee, PLS
828-645-8275
Owner:
Jonathan Hartsell
Blue Ridge RC&D
828-284-9818
Surveying:
Appalachian Professional Land
Surveyors and Consultants, P.A.
1480 US Hwy. 421 South
Boone, NC 28607
Donald H. McNeil, P.L.S.
828-264-0290
Ward Mill Dam Removal Project
Watauga County, North Carolina
a

Y
\ Projects \ 005-10007 Wards Mill Dam \ Cadd \ Plans \ 10007-General Notes and Symbols.dwg
GENERAL NOTES
1. All erosion and sediment control practices shall comply with the North Carolina Erosion and
Sediment Control Planning and Design Manual including maintenance of erosion control
practices.
2. No non-native material excavated from the Watagua River may be spoiled as surface material.
3. All graded areas with slopes steeper than 3:1 will be stabilized within seven (7) working days.
All other areas will be stabilized within 14 working days.
4. Locations for staging and stockpile areas have been provided in the Plans. No additional staging
and/or stockpile areas may be used by the Contractor unless submitted to the Engineer and
DEMLR for approval. All practices must comply with the North Carolina Erosion and Sediment
Control Planning and Design Manual.
5. Temporary stream crossings for Phase 1 include the gravel pad used for demolition as noted on
Sheets 2.1 and 2.2. The location of the temporary crossing for Phase 2 is subject to change
depending on conditions found at the site during mobilization of Phase 2, but it must be
located within the LOD shown on Sheet 5.1.
6. Contractor is to make every effort to avoid damaging or removing existing trees.
7. Under no circumstances shall the Contractor exceed the limits of disturbance as shown on the
INITIAL SITE PREPARATION AND EROSION CONTROL
1. Contact Division of Energy, Mineral and Land Resources at the Winston-Salem Regional Office at
336-776-9654 to schedule a pre -construction meeting at least 48 hours prior to project activation.
2. Contact North Carolina "One Call" Center (1-800-632-4949) before any excavation.
3. Mobilize equipment and materials to the Site
4. Establish construction entrance at the existing rock entrance on the river left, downstream of the
dam, as identified in the plans. This area is to be used for staging and stockpiling and the
processing of dam material. Identify any other sediment control measures in the erosion control
plan to put in place prior to construction.
5. Set up temporary facilities, locate equipment within the staging area, and stockpile materials
needed for the initial stages of construction within the stockpile area(s).
6. Install and maintain an onsite rain gauge and logbook to record the rainfall amounts and dates.
Maintain an approved copy of the E&SC plan with placard and approved letter and a copy of the
NPDES permit with a minimum of 30 days of self -inspection reports on site until project closure by
NCDEQ. Complete the self -inspection as required by NCDEQ permit. Rainfall records, completed
self -inspection forms, and permits should be maintained on site.
7. Monitor for sediment loss and inspect all erosion features after each rain event. Maintain erosion
control features according to the North Carolina Erosion and Sediment Control Manual.
SITEWORK PHASE 1
The purpose of Phase 1 is to remove the dam during low flow period of the year. Dam material,
consisting of river rock and concrete, shall be placed in designated areas and mixed with other
river sediments. The left bank and Mill and Powerhouse Structure will be protected.
WARD MILL DAM REMOVAL
1. For information on the existing dam structure, please see sheets 1.1-1.3.
2. For instructions on the removal of Ward Mill Dam, please see Sheets 2.1- 2.3
WATAUGA RIVER FLOODPLAIN STABILIZATION
1. Phase 1 grading along the Watauga River will include left bank grading to reestablish a left bank
through the dam, the application of material to buttress the Mill and Powerhouse Structure, and
incorporation of a mix of dam demolition rock, existing soil, river alluvium into the left floodplain
terrace. The bank stabilization and approximate profile of the river post -dam removal are
approximate and based on the best available knowledge of the streambed slopes upstream and
downstream and the depth to refusal data gathered with a soil probe. The actual depth to
bedrock and/or the historic stream channel bottom may vary from what is proposed.
2. All graded streambanks are will be matted with erosion control matting per detail. Additional
banks noted in the field as needing stabilization post -dam removal by the Engineer may also be
matted.
3. Seed (with specified temporary seed and permanent seed mix) and straw bare areas on the site.
This includes any newly exposed area from dewatering the impoundment.
CONSTRUCTION PHASE 1 DEMOBILIZATION
1. The Contractor shall ensure that the site is free of trash and leftover materials prior to
demobilization of equipment from the site.
2. Materials deemed suitable for Phase 2 river restoration efforts may be stockpiled upgradient of
the Mill in the hydraulic shadow of the Mill structure.
3. Complete the removal of any other stockpiled material from the site.
4. Seed, mulch, and stabilize and disturbed areas of bare earth including staging areas, access
roads, and construction entrances. The site must be stabilized between Phase 1 and 2 of
construction.
5. Remove all temporary erosion control measures once permanent stabilization has been
achieved.
6. Demobilize grading equipment from the site.
SITEWORK PHASE 2
After normal series of moderate to high flow is allows to erode and naturally redistribute
alluvium in the sediment wedge, Phase 2 activities shall commence beginning with
remobilization to the site. The intent of Phase 2 will be to prepare the riverbanks and
channel toe conditions for long-term lateral stability. Wildlands anticipates grade control
(vertical stability) to reestablish from natural bedrock and colluvial material.
WATAUGA RIVERBANK RESTORATION
1. Follow general notes and initial site preparation and erosion control notes.
2. A more detailed plan stating river restoration activities will be submitted based on
channel evolution at site following normal series of moderate to high flow events.
Exact limits of each practice may vary from what is predicted on these plans -
overall limits of disturbance are not anticipated to change. Executed plans will
address any horizontal and vertical instability present and also provide for
long-term vegetative restoration of streambanks.
3. All disturbed areas of the site (by river flows or by construction practices) will be
reseeded with temporary and permanent seed and mulch.
4. Upon completion of Phase 2, install livestakes along the stream banks and
container or bare root trees within the floodplain according to the plans.
Herbaceous plugs may be installed during the growing season to supplement
seeding efforts.
CONSTRUCTION PHASE 2 DEMOBILIZATION
1. All rock and other stockpiled materials must be removed from the limits of
disturbance. All areas outside the grading areas shall be returned to
pre -project conditions or better. The rock access used as the primary access
and staging area shall be returned to pre -project conditions.
2. The Contractor shall ensure that the site is free of trash and leftover
materials prior to demobilization of equipment from the site.
3. Seed, mulch, and stabilize and disturbed areas of bare earth including
staging areas, access roads, and construction entrances.
4. Remove all temporary erosion control measures once permanent
stabilization has been achieved.
5. Demobilize grading equipment from the site.
Existing Features Proposed Features
Existing Property Line
_ _ Existing Top of Bank
Existing Thalweg
100 Existing Major Contour
Existing Minor Contour
FFP FFP FFP - Existing FEMA Floodplain
FFW FFW Existing FEMA Floodway
Existing Tree
Existing Rock Outcrop
10+00
- T T
Proposed Thalweg Alignment
T - Trout Buffer for Waiver
Gravel Pad
Dam Structure
Demo
Proposed Structures
WORM
Proposed Bank Sloping, Benching and
Bioengineering Measures as Stated on Plan
Proposed Floodplain Stabilization
Proposed Structure Stabilization
Single Arm Vane
Floodplain Sill
Erosion and Sediment Control Features
[X] [X] [X] Proposed Temporary Silt Fence or Straw Wattle
1-417,411
..0401040141
Proposed Construction Entrance
SAF SAF SAF - Proposed Temporary Safety Fence
LOD - LOD
T T
Staging and Stockpile Area
Silt Fence Outlet
Limits of Disturbance
■ Existing Rock/Cobble Access Road
T - Trout Buffer
2600
Parcels
Proposed Contour-1'
Proposed Contour-5'
Predicted Grade - 1'
Predicted Grade - 5'
.��N CARpI4 �i
��%p�,ss/0'. 1
Ward Mill Dam Removal Project
Watauga County, North Carolina
General Notes and Symbols
z
5
u
O
G

Y
\Projects\005-10007 Wards Mill Da
DWELLING i ?'
I
TRASH RACK
TOP OF DAM
ELEVATION: 2608.12
Io
EXISTING
EDGE OF WATER
II
100 YEAR FLOOD PLAIN
FLOODWAY
EMERGENCY SPILLWAY
471
h
TROUT BUFFER
WAIVER
2
0' 20' 40' 60'
(HORIZONTAL)
,,4. pFESS/0 9
f
{y20tttttttttttttt
Existing Site Plan
Lti
6
z
Project Engineer:
u
a

Y
20 •0116-5316 FERC PDF (Unofficial)J1/16/2015 4)56:33 PM
NORTH GATE
S
S
j l
ELUW
1FLOW
PLAN VIEW
5
SAWMILL
S
SOUTH GATE
INTAKE
NC
(003
ROAD
'.,TRANS MISSION
LINE
LEGEND
1 75 KW UNIT
2 93 KW UNIT_
3 TRASH RACK
5~ DAM DRAINAG“ATET"
6 WATER ENTERS
TAIL WATER
WARD MILL DAM
FERC Project P-9842
Drawing 1
Plan View
To,7nL t1 vtrral of DAnn !30'
GATE (UPPER)
CAP = 100 CFS
HEADWATER; EI. 2409
TAW -WATER; EL. 2S42
GATE
ELEVATION VIEW
C)AM--
(VIEWED FROM DOWNSTREAM)
EXISTING BEDROCK
WICKET GATE
(INTAKE) TO
POWERHOUSE
WARD MILL DAM
FERC Project P-9842
Drawing 2
Elevation View
(Viewed from Downstream)
Td 7A ✓, ry roTN OF Aq M, 130
I 1 1
20150116-5316 FERC PDF (Unofficial) 1/16/2015 4)56:33 PM
HEAbW TER; EL.2608
RE -BAR
20
REINFORCED CONCRETE
AND STONE
B EOROC f
SECTION VI E W
—DAM—
El]
Ise
HEADWATER
EL, 2608
Ito
-DAM
Puy/ 0 4OU5E
PROFILE VIEW
(VIEWED FROM NORTHEAST
SIDE OF DAM)
TA1R WATER
EL: 25'4
WARD MILL DAM
FERC Project P-9842
Drawing 3
Profile view
(Viewed from the Northeast Bank)
1 1 1
TAILWATE"R, ER, 2592
WARD MILL DAM
FERC Project P-9842
Drawing 4
Section View of the Dam
I I 1
NOTES:
1. ELEVATIONS PROVIDED IN DIAGRAMS ARE
NGVD29
2. SEE REPORT AVAILABLE FOR OPERATION
OF DRAWDOWN GATES
M
,..N CAR7li �i
ESS/p!
if 04 2
u `t
a
'E 0
p.
Tit U
E Q
az
0
03
z
Project Engineer:
1)
a
171

r
20150116-5316 FERC PDF (Unofficial) 1/16/2015 4:56,33 PM
‘HEADWgTERI EL. 2608
FLOW
40
xr
Q o a
r-1
SECTION VIEW
— POWERHOUSE
t PENSTOCK —
LEGEND
I
TRASH RACK
2
HEAD GATE
3
WICKET GATE SHAFT
4
TURBINE SHA FT
5
30"SAMSON TURBINE
6
PNEUMATIC GATECONTI?O!-
7
75 kW GENERATOR
8
93 kW GENERATOR
.9
WATER COOLED BEARINGS
I
At/TO- CUTOFF FLOAT +SWITCH
cTAIL.WATEt EL. 2592
Scale in feet
0 2 4 6 8
I•I•I•I•I
WARD MILL DAM
FERC Project P-9842
Drawing 5
Section View
Powerhouse and Penstock
NOTES:
1. ELEVATIONS PROVIDED IN DIAGRAMS
ARE NGVD29
a
Ward Mill Dam Removal Project
Watauga County, North Carolina
v

Y
f
Bash c
Reek t
Oethee
PLAN V)Ev✓
,--QoPond Fence
To+al ilnobs+talc+ecl
Rack Space = 35Si:+2
WARD MILL DAM
FERC Project P-9842
Drawing 6
Plan View
Trash Rack Layout
View A
linobs+ruc-kaof Rack Space= 75F+z
NOTES:
1. ELEVATIONS PROVIDED IN DIAGRAMS
ARE NGVD29
VIEN/ C.
WARD MILL DAM
FERC Project P-9842
Drawing 7
Trash Rack A
I I I
TO+AI %I no6sf'racted
Rack Space = 77.F1-2
WARD MILL DAM
FERC Project P-9842
Drawing 9
Trash Rack C
I 1 I
VIEW 6
View D
To+a 1 I.jno bs+ructed
Rack Sj>4ce = 66f+2
WARD MILL DAM
FERC Project P-9842
Drawing 8
Trash Rack B
I I I
To+a' Unobs+ruc+ed
Pack Space = 137 41L2
WARD MILL DAM
FERC Project P-9842
Drawing 10
Track Rack D
I I I
.o�N CAR04,Oi
14%FEss �9
04 280
,':(nrrn:;;;:
Ward Mill Dam Removal Project
Watauga County, North Carolina
cr)
a~
tct
Q Q
cd
s
z
z
Project Engineer:
u

Y
\Projects\005-10007 Wards Mill Da
POND OUTLET PIPE
RELOCATE INTERMITTENT
STREAM AGAINST ROCKS
i O ;
110 1
I' Iin:
'
-1
I
I
CONSTRUCT
GRAVEL PAD
eat 100;sdi
ardrordir
7� iI/_A�1�
it
_EXISTING DAM,,
TOP OF DAM
ELEVATION: 2608.12
TRASH RACK n
tin INSTALL WARNING SIGNAGE
" OR FLAGGING TO NOTE DAM—i�
• (• 0• 1' 126 REMOVAL AHEAD o
�O --- \ LO
1t11 \ N
I
PRE -PROJECT EDGE OF WATER
o
_- '
N
o
N
0
40
N
100 YEAR FLOOD PLAIN
•
/0
N
FLOODWAY
N
I,
APPROXIMATE EXTENT
OF BOULDERS AND
BEDROCK OUTCROP
•`zb
"`<', EMERGENCY SPILLWAY
72.
41
•
O
N
4+1
DEMOLITION NOTE STEP 1
1. INSTALL ALL EROSION AND SEDIMENT CONTROL
MEASURES IN ACCORDANCE WITH THE APPROVED
EROSION AND SEDIMENT CONTROL PLAN.
2. ENTRANCE FOR DAM REMOVAL CONSTRUCTION
LOCATED OFF OF OLD WATAUGA RIVER ROAD ON THE
WEST SIDE OF THE MACHINE SHOP AND POWERHOUSE,
RIVER LEFT, DOWNSTREAM OF DAM.
3. CONSTRUCT A GRAVEL WORKING PAD ALONG THE
POWERHOUSE AND BASE OF DAM, DOWNSTREAM OF
THE DAM ON RIVER LEFT, IN ORDER TO ACCESS THE DAM
FOR DEMOLITION.
4. THE GRAVEL PAD IS TO BE CONSTRUCTED OF RIPRAP
LARGE ENOUGH TO SUPPORT EQUIPMENT USED FOR
DAM DEMOLITION. CONTRACTOR IS RESPONSIBLE FOR
SIZING RIPRAP. RIPRAP SHOULD FILL THE EXISTING
PLUNGE POOL UNTIL THERE IS ONLY TWO FEET OF
STANDING WATER ON TOP OF THE GRAVEL PAD.
ADDITIONAL RIPRAP SHOULD LINE THE MACHINE SHOP
AND POWERHOUSE TO PROTECT IT FROM EQUIPMENT
DURING DEMOLITION.
5. THE GRAVEL PAD MAY NOT BLOCK WATER FLOW OVER
THE DAM OR THROUGH THE SAND GATES. FLOW ACCESS
MUST BE MAINTAINED AT ALL TIMES.
6. AFTER DEMOLITION, ALL GRAVEL MUST BE REMOVED
THAT BLOCKS THE NEWLY FORMING (PREDICTED)
CHANNEL FLOW. GRAVEL MAY STAY IN PLACE THAT IS
USED AS A BASE TO SUPPORT THE POWERHOUSE
STRUCTURE POST -DAM REMOVAL OR THAT IS NOT
CONSTRICTING PREDICTED BASEFLOW CHANNEL AS
DEPICTED ON SHEET 3.2.
2
0' 20' 40' 60'
(HORIZONTAL)
Q �
ZO �o) , dir
i,:ii
• 201
,_,,, 'il,
.... CARpIi �i
p ESS/0:. by S
04J/
Ward Mill Dam Removal Project
Watauga County, North Carolina
3
z
Project Engineer:
U

\ Projects \ 005-10007 Wards Mill Dam \ Cadd \ Plans \ 10007-Stage 2 Dam Removal.d
EXCAVATED VOLUMES
DAM DEMOLITION VOLUME = 450-500 CY (CUT)
T
V
MATERIAL
STOCKPILE AND
SORTING AREA. SEE ,
SHEET 5.1 /
II
II
O
r4
I N ),
,
EDGE OF WATER
STAGE 1:
GRAVEL PAD
TOP OF DAM
ELEVATION: 2608.12
I STAGE 2: EXTEND
WORKING PAD USING
MATERIAL FROM DAM
DEMOLISH DAM TO POINT WHERE
INTERCEPT NATIVE ROCK OUTCROP
ADJACENT TO MACHINE SHOP AND
POWERHOUSE
STAGE 2: CREATE
WORKING PAD ABOVE
DAM USING MATERIAL
FROM DAM
DEMOLISH LOG
POND FENCE
(APPROXI MATE
LOCATION)
Lei
to
WARD MILL 1 II
DAM TO BE
DEMOLISHED
PRE REMOVAL EDGE OF WATER
0
0
100 YEAR FLOOD PLAIN
FLOODWAY
N
II
0
N
0
DEMOLITION NOTE STEP 2
1. THE PREFERRED APPROACH IS TO DRAW DOWN THE IMPOUNDMENT
STARTING 2-6 WEEKS PRIOR TO CONSTRUCTION. DRAW DOWN USING
POWERHOUSE AND DAM GATES TO EXISTING SEDIMENT WEDGE
LEVEL AND OBSERVE. REPLACE GATE BOARDS IF UNDESIRABLE
SEDIMENT MOVEMENT IS OCCURRING. AS CONSTRUCTION
APPROACHES, LOWER BOARD GATES FURTHER IF POSSIBLE TO
FURTHER DEWATER.
2. IF DEWATERING CANNOT COMMENCE PRIOR TO CONSTRUCTION, THE
POWERHOUSE AND DAM GATES CAN BE USED AT THE TIME OF
MOBILIZATION TO ALLOW FLOW TO PASS THROUGH AND LOWER THE
WATER LEVEL. DUE TO THE ROCKY CONDITIONS BELOW THE DAM,
DEWATERING RATES HAVE NOT BEEN SPECIFIED, BUT IT IS
PREFERABLE ALTHOUGH NOT REQUIRED TO DEWATER TO THE
EXISTING SEDIMENT LEVEL PRIOR TO BEGINNING DAM REMOVAL.
3.
4.
GATES MAY REMAIN OPEN FOR THE DURATION OF CONSTRUCTION.
REFER TO SHEETS 1.1-1.3 FOR GATE LOCATIONS AND DIAGRAMS.
DEMOLITION OF THE DAM WILL PROCEED FROM THE LEFT BANK, AT
THE GRAVEL PAD, AND PROCEED TO THE RIGHT BANK BY REMOVING
IN LIFTS. THE MATERIAL REMOVED IN LIFTS WILL BE USED TO
ESTABLISH A WORKING PAD ACROSS THE BASE OF THE DAM.
5. IF AT ANY TIME THE FLOW OF SEDIMENT DOWNSTREAM IS DEEMED
TOO EXTENSIVE BY THE ENGINEER OR REGULATORY AUTHORITY,
DEMOLITION WILL STOP TO ALLOW FOR EQUILIBRIUM TO
REESTABLISH.
6. DAM MATERIAL NOT USED TO ESTABLISH A WORKING PAD WILL BE
STOCKPILED IN THE STAGING AREAS ON THE PLANS, SHEET 5.1
7. ALL STEEL SHALL BE SEPARATED FROM THE ROCK, CONCRETE, AND
LOGS AND MUST BE HAULED OFF -SITE POST CONSTRUCTION. LOGS
MAY BE REUSED ON SITE OR STOCKPILED BY DIRECTION OF THE
ENGINEER.
8. THE ENTIRETY OF THE DAM STRUCTURE SHALL BE DEMOLISHED AS
SHOWN ON THIS PLAN SET, INCLUDING THE TRASH RACK STRUCTURE.
9. THE DAM SHALL BE REMOVED UNTIL THE NATURAL STREAM BED/
BEDROCK IS ENCOUNTERED.
2
0' 20' 40' 60'
(HORIZONTAL)
....s7 CR�4i0i
FES/0 4
374t;....C4/AGIN't
Ward Mill Dam Removal Project
Watauga County, North Carolina
z
Project Engineer:
u
3
G
a
6

Y
cn
N
\ Projects \ 005-10007 Wards Mill Dam \Cadd\Plans \10007-Stage 3 Grading.dwg
ROCK AND BOULDER STABILIZATION
'OF MACHINE SHOP AND POWERHOUSE WALLS
I SEE NOTES AND CROSS SECTIONS ON SHEET 3.3
i1
N
APPLY MIX OF NATIVE CLASS A SIZE DAM
COBBLES WITH ALLUVIUM AND EXISTING
III ON -SITE SOIL TO ACHIEVE GRADES SHOWN
NI AS SOLID -LINE CONTOURS ON SHEET 5.1
EXISTING EDGE OF WATER
REGRADE INTERMITTENT
CHANNEL UPON
DEMOBILIZING FROM
THIS ACCESS AREA
�`
/(-7 LL
I H
I I
I
$''-
tver-
- 2.
•1\
CONSTRUCT VEGETATED ,
SOIL LIFT FROM ROCK
OUTCROP TO EXISTING
ROCKY BENCH
POST PROJECT PREDICTED
0
ry
1
i 100 YEAR FLOOD PLAIN
N I
q1
FLOODWAY
\ N i
\ I I
\ I „rI
�r�rl
II
I1
acr,
0
DEMOLITION NOTE STEP 3
1.
USE RIPRAP FROM GRAVEL PAD ESTABLISHED IN STAGE 1 TO
CREATE A MINIMUM OF 1 FOOT BASE FOR STABILIZATION
ALONG THE BORDER OF THE MACHINE SHOP/POWER HOUSE
WALL. USE BOULDERS FROM THE DEMOLISHED DAM TO
STABILIZE THE MACHINE SHOP/POWER HOUSE WALL AS
SHOWN IN HATCHED AREA. BOULDER MATERIAL SHOULD BE
FREE OF REBAR AND OTHER DEBRIS FROM THE DAM
REMOVAL. BURY RIPRAP AND CONCRETE BELOW OTHER
ROCKY FILL.
2. ROCK STABILIZATION OF THE MACHINE SHOP/POWER
HOUSE WALL SHALL NOT EXCEED A SLOPE OF 2 (H):1(V).
3. FLOODPLAIN SILLS AND VANE SHALL BE PLACED ACCORDING
TO SHEET 2.3, 3.1, AND THE DETAILS. FLOODPLAIN SILLS CAN
BE CONSTRUCTED OF WASTE COBBLE AND BOULDERS FROM
THE DAM.
4. ROCK STABILIZING THE SLOPE FROM THE SAWMILL EDGE TO
THE FLOOPLAIN SILLS SHALL BE WASTE MATERIAL FROM THE
DAM - PLACE CONCRETE BELOW OTHER ROCKY FILLS.
5. ROCK PLACED TO STABILIZE SLOPE SHALL BE MIXED WITH
RIVER SEDIMENT TO CREATE A PLANTING MEDIUM. SEE
PLANTING SHEET 4.1 FOR REVEGETATION PLAN.
2
0' 20' 40' 60'
(HORIZONTAL)
Z' ono
). .. e n :48"ai
AZ 'iaH3
css'- CA4 4,
(11
Li�,,2CF AGINIJEy+,=tttttttttttttt
Ward Mill Dam Removal Project
Watauga County, North Carolina
z
3
z
Project Engineer:
u
a

r
y
2605
2605
0' 2' 4' 6'
p
'n
N
m
O
N
(VERTICAL)
:ation=397+71.35
puree Elevation=2594.440
I I
_ _
to
0' 20' 40' 60'
cn=396+2
;e Elevatic
_
I`
�n o
-
- _ _
- N N
- II
\
TOP
OF DAM
(HORIZONTAL)
EXISTING
GROUND
e
e
,-
e
o
,0
rn
Station=398+1
Source Elevatii
tion=398+87
rce Elevation
��-_-----
_ _
ELEV.
= 2608.12
f o
2600
�a
m o
M -
LJ
2600
44
_-
- -
-
UI
UI
o o
DEPTH TO
REFUSAL BORINGS
(TYP.)
I
2595
2595
PREDICTED
CHANNEL GRADE
POST -DAM
REMOVAL
I
I
11
\
hill
2590
2590
II
\
II
/
/
2585
2585
396+00
396+50
397+00
397+50
APPLY MIX OF NATIVE DEMOLITION -
ROCK WITH ALLUVIUM AND EXISTING -
ONSITE SOIL, SEE SHEET 3.3 FOR
CROSS-SECTION
398+00
398+50
399+00
399+50
MACHINE SHOP &• ___ _ _ _
POWER HOUSE--- ----
400+00
400+50
���• 2610 _i
Autipopopheak
BANK SILL b , 2610 ��a �• • • • ♦ t �� �� ���.� _ ZI C
-� �,i1 1"ID• ��' 1 1 �1-t±
OF VANE PER� - L i � � i � I� � i�[I- 2 10 ice'
PLAIN SILL DETAIL �� .e - ���� a? �� � 5� We
260 ' ,'Po i i i i i ai Aturi ei�I_po+f i a5 . /,;,, /,,,,;_, 5, :i.z:
����•�F�1��••rQ�•�•�•�a�•�•�o • v"Y ` / /',',SSi,' � �\��. Py.e
•
io
G •m■i • • • • • % • •`� 1 S•I paw®• �"Y7
'•" •�•-.4. •zW`� •�•s! 60��•S� rgei �j�•�_•�•�•-,-2600- ~���II„,
:erTOR�q"�'w�er�o►o ,
ra��jr �. �� + �4Fu,A��ad�����ilt0 ems, �.�,-_-�� '1��1i��� v, 11 BOULDER STABILIZATION OF
�S'+._• et OO: , 2602 5 - �•�•�•�•�•:'Gr•�•► :� F— � - • �• Jy
2602' �,���'r'� �p MACHINE SHOP AND
'2600 m�� ���, 5�0 �_.r�Ir�-�� �lEi��� .RIMS �- _�1 �:� 6 SIG,,,..., \ �®� � �� POWERHOUSE, SEE SHEET 3.3
6 ' ��1■■■ 1 '' �■ DETAIL -LAYOUT �!�■: i \■■�■11 ��E■■■��s "iLlilali ■■■ - ■■1... i �1\'. FLOODPLAIN SILL. SEE ■► . ■■ ■■■fit RII 1 ■�■9z_
06.eacir
1LEN 0 Fill •
AME ELEVATIONS SHOWN ■■�
ELEVATIONS
z 2597 2225 500
0 ��:■� ■■ I■/1/■■�-■■
1
ELEVATIONS SHOWN +59g. ^
CONSTRUCT
PORTION
FLOOD
PROPOSED VANE, SEE
DETAIL - LAYOUT
3971+00
q �� — WATAUGA RI)JER
- \ FLOW -r►
----1/11ip:::mI��11■■■..1�.i.1����r■:i-i��:: I
:�
I ...�:::=11��11 A..■111�11■�.■.�..
PHASE 2 BANK RESTORATION
ACTIVITES, SEE SHEET 3.2 ----------------------------
--------- ---
_--------------- ---- ----- }---h - `-----;
,�� _ _.'4 -2610 �r -4 g:5o' _ 2610 _�,■►Q--=
MES
�smINll
OMME■IL MEM
'--- • i rO MME111 Il i:: �:��'1� uli
■1!!•••tea■■
--- - __..;_■■■ I:11 II
PHASE 1: INSTALL VEGETATED GEOLIFT
ON ROCK OR LOG/BRUSH TOE
PHASE 2: LIVESTAKE LIFTS DURING
DORMANT SEASON
7 /•
EXISTING ROCK OUTCROP
401+00
0
N

\Projects\005-10007 Wards Mill 6a
------------
j �- PHASE 2 ACCESS
-;i USING APPROVED 03
6 CONSTRUCTION
j'� - ENTRANCE
9�- 26 = �M
_262s
-------------------
2605'
:; PHASE 1 RIVER TRAINING}
%; ,/ STRUCTURES(VANE SILANDLS)
OLD WAS R UGA RIVER RD 1121
Mdd N PHASE 1 STOCKPILE MATERIALS
Mdd ,-TOBEUSEDOFINPHASE2OR
PROPERLY DISPOSED OF
PHASE 1 GRADING WITH NATIVE
COBBLE AND ALLUVIUM 3,46
4.411,10061,41 v..
sl
REGRADE, SEED, STRAW
AND STABILIZE ALL
DISTURBED AREAS
-----------------
_ MACHINE SHOP &
POWER HOUSE
al
__ - - „, -•-•--I Nov . W- W '11.. WT. • W.W N.wele IffSr 9 di i
s s 4.4 le‘ j ". ..4 VI 1 444.1‘,. $.% • j 0° 147*:.‘ / . No A &
• 40. 0" 4 41
l e I S • *#%* V. N
POST -PROJECT I� __
PREDICTED EDGE OF ` ,�+� ' i/ +�1�++�
BASEFLOW CHANNEL � --/ "" _ _ -\ _---- ---- 4y#=♦��4�♦ice ►
'- _ PHASE 2 BANK RESTORATION ACTIVITES: AS 9�� ____----
'------ - - - - - - ` WARRANTED APPLY BANK GRADING _ __
2605' - -- - -- `--------------
260
_ , 2605 _1 .BENCHING AND MATTING, TOE PROTECTION
-2605 -_--------
�L-------------------------- \_i'J. MEASURES WITH PREFERENCE FOR VEGETATED
---- SOIL LIFT OR BRUSH MATTRESS PRACTICES -
Y 2610 DETAILED PLAN TO BE DEVELOPED PRIOR TO
MOBILIZATION
---------------
2615 M
A1Cdd—rM Mdd—Mdd
i Mdd '_ 'M3d M9d_, /Kdd M3�—ARj�615— NCd3 —
2 - _
_ 620
---------------------------------------------- -- -M3d-..._�-d
i
2620
- _ _2615_ -
------------- 26
:2625 --
___
2590
ATAUGARI�
-------------------------------------------------------------------------------
PHASE 1 ROCK STABILIZATION
OF MACHINE SHOP AND
POWERHOUSE WALLS
LIVESTAKE PHASE 1 LIFTS _
DURING DORMANT SEASONr-
--------------
EXPOSED
BEDROCK/BOULDER CLUSTERS
I
o
PHASE 2 - RIVERBANK RESTORATION
1. AFTER DEMOLITION OF THE DAM AND STABILIZATION OF THE LEFT FLOODPLAIN (PHASE 1), THE RIVER WILL SIT FOR MINIMUM OF 2 MONTHS FOR THE CHANNEL TO PUSH
SEDIMENT THROUGH THE SYSTEM AND ADJUST TO THE DAM REMOVAL.
2. DURING THIS TIME THE SITE MUST BE INSPECTED WEEKLY PER THE SEDIMENT AND EROSION CONTROL SELF -INSPECTION REQUIREMENTS UNDER THE NCGO1 PERMIT.
DESIGNER WILL ASSESS EVOLUTION OF CHANNEL AND DETERMINE IF REMEDIAL ACTION MAY BE NECESSARY. SHIFTS IN PATTERN FROM THE IDEALIZED PATTERN WILL NOT
NECESSARILY BE CONSIDERED UNANTICIPATED SO LONG AS VALLEY WALLS, STRUCTURES, OR EROSION INTO CONSOLIDATED MATERIALS DOES NOT OCCUR. REMEDIAL
ACTIONS THAT MAY BE REQUIRED INCLUDE RE -SEEDING AND MULCHING THE UPLAND AREAS AND NEWLY EXPOSED FLOODPLAIN, OR ADDRESSING EROSION ALONG THE LEFT
BANK, DUE TO THE NATURAL CHANNEL MIGRATION POST -DAM REMOVAL, THAT THREATENS THE POWERHOUSE AND SAWMILL STRUCTURES.
3. REMEDIAL ACTIONS TO ADDRESS EROSION THREATENING THE BUILDINGS MAY INCLUDE REINFORCEMENT OR REPLACEMENT OF THE ROCK MATERIAL PLACED DURING PHASE
1. IF THIS REQUIRES WORK BELOW THE ORDINARY HIGH WATER MARK A COFFER DAM OR SANDBAGS MAY BE USED ALONG THE TOE OF SLOPE TO ISOLATE THE WORK AREA.
4. AFTER A SERIES OF HIGH OR MODERATE FLOWS, OR SEVERAL MONTHS OF TYPICAL FLOWS, THE EVOLVING CHANNEL WILL BE ASSESSED AND A DETAILED PLAN WILL BE
DEVELOPED FOR RIVERBANK RESTORATION MEASURES AND THE EXTENT OF EACH MEASURE.
5. THERE ARE THREE LIKELY SCENARIOS IN PHASE 2. EROSION CONTROL MEASURES FOR EACH SCENARIO ARE LOCATED ON SHEET 5.1.
5.1. SCENARIO 1: NO ADDITIONAL BANK GRADING REQUIRED, ONLY SEEDING AND PLANTING.
5.2. SCENARIO 2: SOME EXTENT OF BANK GRADING, SEEDING, AND PLANTING
5.3. SCENARIO 3: SOME EXTENT OF BANK GRADING, INSTALLATION OF BIOENGINEERING STRUCTURES SUCH AS BRUSH MATTRESS AND VEGETATED SOIL LIFT, AND SEEDING
AND PLANTING.
6. ANY STREAMBANK GRADING WILL BE TO A MINIMUM SLOPE OF 3(H):1(V). BANKS WILL BE SEEDED, MULCHED AND MATTED WITH COIR FIBER MATTING.
7. AFTER PHASE 21S COMPLETE, OR AS PART OF PHASE 2, LIVESTAKES WILL BE PLANTED ALONG ANY STREAM EDGES ALTERED WITH BANK GRADING OR BIOENGINEERING
METHODS.
0' 20' 40' 60'
(HORIZONTAL)
Riverbank Restoration
3
z
z
Project Engineer:
6

\Projects\005-10007 Wards Mill Da
2620
2615
2610
2605
2600
2595
2590
2615
2610
2605
2600
2595
2590
2585
2580
2615
2610
2605
2600
2595
2590
2585
2580
Station 398+55 - Upstream of Dam
Phase 1 Floodplain Sill
20:1
Existing Water Surface
Predicted Post -Dam
Removal Cross -Section
Existing Surface
Phase 1 cobble from
dam material mixed with river
sediment to stabilize floodplain
and provide planting medium
Modeled surface of refusal depth-
Phase 2 riverbank restoration with
bank grading and matting, brush
mattress, or vegetated soil lift
practices - to be applied as needed
W J 01 (xi A 0 N N
O O O O O O O O
O
2620
2615
2610
2605
— 2600
— 2595
2590
CO tr.
0 ▪ O O O O O O O O
Station 399+50 - At/Above Dam Face
Building
Existing Surface @ Dam Existing Water Surface
Face = Elev. 2608.12 Sediment Level 50' Upstream
Edge
I I -� r 1
Cushion•
building
with finer
?Zdj I I
dk r
1 r
Phase 2 riverbank restoration
with bank grading and matting,
riverine
material
Predicted
Removal Cross
Post -Dam
-Section
4.1Mar
_
brush mattress, or vegetated soil
lift practices - to be applied as
needed
Phase 1 Boulders and
cobble from dam material
Approximate rock outcropping
.
to stabilize building edge
I I
Depth
of Refusal-
visible above and below water
on downstream face of dam
o o
Gravel Pad material
from Stage 1 Demolition.
Minimum 2' depth
of 18" or similar stone
0
0
0
0
0
Boulder outcrop section of dam wall to remain
0
0
0
0
Station 399+75 - Below Dam
0
0
0
0
0
0
Phase 1
Vegetated
soil lift
2575
00
0
_ Phase 1 Boulders mixed with cobble
and river sediment to stabilize bank
and provide planting medium
Working gravel pad material
to be removed
Predicted Post -Dam
Removal Cross -Section
Existing Water Surface
(same as post -removal)
2615
2610
2605
2600
2595
2590
2585
2580
2615
2610
2605
2600
2595
2590
Approximate rock outcropping 2585
visible above and below water
on downstream face of dam
0 0 0 0 0 0 0 0
O
0 0 0 0 0 0 0 0
2580
2575
0
Machine Shop and
Powerhouse
Sawmill
Phase 1
Floodplain
Stabilization
li
Existing Rock
Outcrop (TYP)
,Ay
o'
Phase 1
Floodplain
Stabilization
Phase 2 Bank
Restoration (as
needed), Sheet 3.2
80'
180'
of
240'
(HORIZONTAL}
Ward Mill Dam Removal Project
Watauga County, North Carolina
Cross Sections
Floodplain Stabilization
7.30.20 ESC Comments #3
z
Project Engineer:
u
E
6
-c
1

Planting
Y
\ Projects \ 005-10007 Wards Mill Dam \ Cadd \ Plans \ 100117-Planting Plan.dwg
- + + + +
+ + + + +
Zone 1 - Streambank Planting Zone
(See Detail, Sheet 6.2)
Zone 2 - Riparian Buffer Planting Zone
(See Detail, Sheet 6.2)
Zone 3 - Permanent Seeding - No Woody Planting
(See Detail, Sheet 6.2)
Buffer planting to occur both within limits of disturbance and outside of limits of
disturbance. Outside of disturbance limits, planting will be by hand and accessed on foot.
The purpose of planting outside of the disturbance limits is to reestablish woody species on
areas that are currently submerged behind the dam.
Phase 1 Seeding - Apply temporary seeding to all areas and temporary and permanent
seeding to areas that are not expected to change as a result of river adjustment, reseed with
cool weather species in fall.
Phase 2 Seeding - Phase 2 is an effort to more permanently stabilize banks on the site and
establish permanent vegetation, including bioengineering. During Phase 2, apply temporary
and permanent seed to all areas that were not previously seeded or that are regraded or
have bioengineering or matting applied.
Phase 3 (Adaptive Management) Seeding - The adaptive management phase entails regular
inspection and management of long-term vegetation establishment. Repair and apply
temporary and permanent seed to areas that have not established.
Riparian Seeding
Live Stakes or Tublings
Species
Common Name
Max Spacing
Planned
Spacing
Min. Size
Stratum
Quantity
Sambucus canadensis
Elderberry
3 ft.
2 ft.
0.5"-1.5" cal.
Shrub
TBD
(Use a mix of
at least 3
species)
Salixnigra
Black Willow
3 ft.
2 ft.
0.5"-1.5" cal.
Canopy
Corpus amomum
Silky Dogwood
3 ft.
2 ft.
0.5"-1.5" cal.
Shrub
Salix sericea
Silky Willow
3 ft.
2 ft.
0.5"-1.5" cal.
Shrub
Cephalathus
occidentalis
Buttonbush
3 ft.
2 ft.
0.5"-1.5" cal.
Shrub
Phsycarpus
opulifolius
Ninebark
3 ft.
2 ft.
0.5"-1.5" cal.
Shrub
Herbaceous Plugs
Juncus effusus
Common Rush
3 ft.
2 ft.
1.0"- 2.0" plug*
Herb
TBD
Carex crinita
Fringed Sedge
3 ft.
2 ft.
1.0"- 2.0" plug
Herb
Carex lurida
Shallow Sedge
3 ft.
2 ft.
1.0"- 2.0" plug
Herb
Lobelia cardinalis
Cardinal flower
3 ft.
2 ft.
1.0"- 2.0" plug
Herb
Rudbeckia laciniata
Green -headed
Coneflower
3 ft.
2 ft.
1.0"- 2.0" plug
Herb
Hibiscus moscheutos
Rose mallow
3 ft.
2 ft.
1.0"- 2.0" plug
Herb
*Plugs may also be obtained in 4" pots for approximately $2.75 - 3 per plant
Riparian Seeding
Pure Live Seed (20 Ibs/acre)
Approved Date
Species Name
Common Name
Stratum
Density (Ibs/acre)
All Year
Bidens aristosa
bur -marigold
Herb
1.0
All Year
Carex lurida
lurid sedge
Herb
0.6
All Year
Carex vulpinoidea
fox sedge
Herb
1.0
All Year
Chamaecrista fasciculata
partridge pea
Herb
1.8
All Year
Chasmanthium latifolium
river oats
Herb
0.8
All Year
Elymus riparius
Riverbank wildrye
Herb
1.6
All Year
Elymus virginicus
Virginia wildrye
Herb
1.6
All Year
Ilex verticillata
Winterberry
Herb
0.4
All Year
Pincus tennuis
Path rush
Herb
1.0
All Year
Lindera benzoin
Spicebush
Herb
0.6
All Year
Panicum anceps
Beaked panicgrass
Herb
1.0
All Year
Panicum virgatum
switchgrass
Herb
1.0
All Year
Rhus typhina
Staghorn sumac
Herb
0.4
All Year
Rudbeckia hirta
blackeyed susan
Herb
1.2
All Year
Andropogon gerordii
Big bluestem
Herb
1.8
All Year
Sorghastrum nutans
Indiangrass
Herb
1.8
All Year
Tridens flavus
purple lovetop
Herb
1.0
All Year
Tripsacum dactyloides
gamma grass
Herb
1.0
All Year
Juncus effusus
Soft rush
Herb
0.4
odd- /
_ aaa
add
ddddii
`L ` - T Mji
Mid Mdi -NCf`ra - T
Mid
>-
ddd
dfi
390+p0 _
Mai
_ /Mdd / - ad1 �►�
dd/Maa ,,load
Mi�
dii dd�T a�
Temporary Seeding
Temporary Seeding
Approved Date
Type
Planting Rate
(Ibs/acre)
Jan l - May l
Rye Grain (Secale cereale)
120
Ground Agricultural Limestone
2000
Soil conditioner (Humic DG)
50
Straw Mulch
4000
May 1- Aug 15
German Millet (Setaria italica)
40
Ladino/Red/Crimson Clover
20
Ground Agricultural Limestone
2000
Soil conditioner (Humic DG)
50
Straw Mulch
4000
Aug 15 - Dec 30
Rye Grain (Secale cereale)
120
Ladino/Red/Crimson Clover
20
Ground Agricultural Limestone
2000
Soil conditioner (Humic DG)
100
Straw Mulch
4000
Note: Apply to all disturbed areas. More detailed amendment
recommendations are being developed and may incorporated the
results of soil testing if deemed relevant for this rocky site.
t
T 1
Mdd
3i• 1�
ddy✓ aii
Z
1
Mid
ddd
aai
i
did
aaa
Riparian Buffer Planting Zone Species
Species
Common Name
Qty
Indiv.
Spacing
Min. Size
Stratum
Reserved
Magnolia fraseri
Frasier Magnolia
TBD
10 ft.
1-3 gal.
Tree
Lindera benzoin
Spicebush
TBD
10 ft.
1-3 gal.
Shrub
Prunus serotina
Wild Cherry
TBD
10 ft.
1-3 gal.
Tree
Quercus rubra
Northern Red
Oak
TBD
10 ft.
1-3 gal.
Tree
Fagus grandifolia
Beech
TBD
10 ft.
1-3 gal.
Tree
Carpinus
caroliniana
Hornbeam
TBD
10 ft.
1-3 gal.
Understory
Tree
Corpus florida
Flowering
Dogwood
TBD
10 ft.
1-3 gal.
Understory
Tree
Platanus
occidentalis
Sycamore
TBD
10 ft.
1-3 gal.
Tree
Quercus alba
White Oak
TBD
10 ft.
1-3 gal.
Tree
Nyssa sylvatica
Black Gum
TBD
10 ft.
1-3 gal.
Tree
Oxydendrum arboreum
Sourwood
TBD
10 ft.
1-3 gal.
Understory
Tree
Hamamelis virginiana
Witchhazel
TBD
10 ft.
1-3 gal.
Shrub
Leuchothoe fontanesiana
Doghobble
TBD
10 ft.
1-3 gal.
Shrub
Aesculus (lava
Yellow buckeye
TBD
10 ft.
1-3 gal.
Tree
Select minimum of 3 tree species, and 2 shrub species. If bareroot plants are used, increase quantities by a factor of 2.
aaa
MACHINE SHOP &
POWER HOUSE
a
tioal
Mii 1
el
dii
0.8 ACRES RIPARIAN WOODY SPECIES
DWELLING
-o
/
/
/
dd
M
did
did
dyy
100 YEAR FLOOD PLAIN
FLOODWAY
PRE -REMOVAL EDGE OF WATER
aid
�Mdi�Mid' �
1
WATAUGA RIVER
1
EDGE OF W
dial Myy
Myy\\ \
My�t
°yy
yy
- did
Mdd\
ay
.r\
0' S0' 100' 150'
(HORIZONTAL)
ay
as
bC
7-4
a
z
3
z
Project Engineer:
3
u

\Projects\005-10007 Wards Mill Da
T
T
-T'
ROCK
OUTCROP (TYP)
9+00
PRE -REMOVAL
EDGE OF WATER
Erosion and Sediment Control Features
STAGING, STORAGE, AND SCENARIO 2: COIR MATTING,
MATERIAL PROCESSING AREA SEE DETAIL 2/6.1
ACCESS #2 - INSTALL
CONSTRUCTION
ENTRANCE WHEN USED
FOR ACCESS DURING
PHASE 1OR 2
PIN: 1961-48-6427
POTENTIAL LOCATION OF
PHASE 2, SCENARIO 3
TEMPORARY FORD
CROSSING
[x] [x] Ex] — Proposed Temporary Silt Fence or Straw Wattle
4444044
Proposed Construction Entrance
SAF SAF SAF — Proposed Temporary Safety Fence
— T
LOD LOD
T
Staging and Stockpile Area
Silt Fence Outlet
Limits of Disturbance
Existing Rock/Cobble Access Road
T — Trout Buffer
2600
Parcels
Proposed Contour- 1'
Proposed Contour - 5'
Predicted Grade -1'
Predicted Grade - 5'
*Proposed grades will be used as finish grade for phase 1 dam removal
and left floodprone area and millhouse stabilization. Predicted grades are
what is anticipated to develop within the river based on the downstream
transport of impounded wedge sediments.
-PIN:1961-48-6427`=
_RAY AND VIRGINIA WARD
------------
�� sires.
ACCESS ROUTE FOR USE
IN PHASE 2, SCENARIO 3,
SEE SECTION ABOVE
LOD = 1.9 ACRES
APPLY TEMPORARY AND PERMANENT
SEED AND STRAW PRIOR TO COIR
MATTING OR LIFT MATTING
0' 30'
60' 90'
(HORIZONTAL)
SECTION PHASE 2 SCENARIOS 2-3
LOOKING DOWNSTREAM
(NTS)
ACCESS, SCARIFY, SEED AND STRAW UPON
COMPLETION
WATTLE
SCENARIO 3: STONE OR BRUSHTOE
BASE SOIL LIFTS AS REQUIRED, SEE
DETAIL 4/6.0
ACCESS #1- EXISTING STONE ACCESS
RIVER COBBLE ACCESS USING
COARSE ONSITE MATERIAL
RELOCATE EXISTING INTERMITTENT
STREAM -SEE SHT. 2.1
STAGING, STORAGE, AND MATERIAL
PROCESSING AREA, ENSURE
ADEQUATE ISOLATION OF AREA
FROM RELOCATED STREAM
/
/
-/
fir\
� 'S-. \sisc:eess� �/
---/ /
.:1
ce� E�
s-.11114 ®. .
oh
..:.Milempilasialme
tREMMII
t ii !A�\‘1111iirti -11.,
rrzeca.�ss
sew\�.1.
EROSION CONTROL NOTES:
1. THERE SHALL BE NO TREE REMOVAL ON THE PROJECT.
2. NONE OF THE AREAS ON THE SITE DRAIN MORE THAN ONE ACRE OF UPLAND RUNOFF.
3. SEE CONSTRUCTION SEQUENCE FOR E&SC, SHEET 0.2
4. PROPOSED STOCKPILE AREAS ARE FOR MATERIAL STORAGE AND PROCESSING.
5. SILT FENCE WILL BE INTERCHANGEABLE WITH STRAW WATTLE SUITABLE TO SITE CONDITIONS.
6. TAKE APPROPRIATE PRECAUTION WHEN REFUELING. REFUEL AS FAR FROM RIVER AS POSSIBLE - IT IS NOT
NECESSARY TO GO INTO ROADWAY TO REFUEL. SPILL CLEANUP MATERIALS SHALL BE KEPT ON -SITE.
7. ISOLATE FLOW FROM THE WORK AREA WHEN POSSIBLE BY USING FLOW GATES OVER OR NATURAL OVERFLOW
RIVER RIGHT.
8. ACCESS ROADS SHALL BE ON COARSE SEDIMENT OR SHALL HAVE A DOWN -GRADIENT SEDIMENT BARRIER.
9. SITE ENTRY AND EXIT POINTS SHALL BE MONITORED FOR SEDIMENT LOSS DAILY AND STABILIZED AS
NECESSARY.
10. SEQUENCE SHALL FOLLOW SHEETS 0.2 AND 2.1-2.3.
11. THE GRAVEL PAD SHOWN IN THE DEMOLITION PLAN SHALL BE USED AS A TEMPORARY FORD STREAM
CROSSING DURING PHASE 1. THIS MATERIAL SHALL BE HARVESTED AND MAY BE REUSED AS A TEMPORARY
FORD STREAM CROSSING DURING PHASE 2.
12. THE TEMPORARY FORD CROSSING IN PHASE 2 SHALL BE LOCATED AT THE MOST STABLE POINT OF INGRESS
AND EGRESS IDENTIFIED BY THE ENGINEER IN THE FIELD. TEMPORARY CROSSING LOCATIONS SHALL BE LIMITED
TO TWO LOCATIONS.
13. REFER TO GROUNDCOVER STABILIZATION REQUIREMENTS ON SHEET 6.4. SEE TEMPORARY AND PERMANENT
SEEDING SCHEDULES ON SHEET 4.1.
14. THE SITE SHALL BE STABILIZED WITH MULCH AND SEED BETWEEN PHASES 1 AND 2 OF CONSTRUCTION
15. REFER TO SELF INSPECTION REQUIREMENTS SHEET 6.3.
16. CONTACT DEMLR REGIONAL WINSTON SALEM OFFICE AT LEAST 48 HOURS PRIOR TO COMMENCING
LAND -DISTURBING ACTIVITY.
IMPACT TO EXISTING TREES TO BE AVOIDED
UNLESS BANK STABILIZATION REQUIRED IN
PHASE II.
----_-------
-_PIN: i961-58-8545
-RAY AND VIRGINIA
WARD
DRAWDOWN NOTES:
1. NORTH GATE IS 5' WIDE x 8' HIGH AND THE TOP OF THE GATE IS 10' BELOW THE CREST OF DAM. SOUTH GATE IS
SAME SIZE AND HAS TWO -STAGES WITH TOP STAGE 3' BELOW CREST. LOWER STAGE (CLOSER TO
POWERHOUSE) BEGINS 7' BELOW CREST.
GRAVEL PAD NOTED IN SHEETS 2.1 AND 2.2 TO
BE USED AS TEMPORARY FORD CROSSING -
DURING PHASE 1 CONSTRUCTION. GRAVEL
PAD TO EXTEND TO NATIVE ROCK.
PIN:1961-59-3545
TIMOTHY AND JULIE WARD
ADDITIONAL PHASE 2 EROSION CONTROL NOTES:
THE EXTENT OF GRADING SHOWN ABOVE IS BASED ON ANTICIPATED CHANNEL RESPONSE OF THE RIVER SYSTEM.
THE FOLLOWING SCENARIOS MAY APPLY DURING THE CONSTRUCTION OF PHASE II.
SCENARIO 1: NO ADDITIONAL BANK GRADING ON RIGHT SIDE OF RIVER IS REQUIRED AND WORK IS LIMITED TO PLANTING.
* THIS SCENARIO WOULD NOT REQUIRE LARGE EQUIPMENT TO MOVE ACROSS THE RIVER, WOULD NOT REQUIRE AN ACCESS ROUTE ON THE RIGHT SIDE OF
THE RIVER, OR ADDITIONAL EROSION CONTROL MEASURES ON THE RIGHT SIDE OF THE RIVER. PLANT MATERIAL WOULD BE FLOATED ACROSS THE RIVER.
* THIS SCENARIO MAY REQUIRE THE PLACEMENT OF ADDITIONAL TEMPORARY AND PERMANENT SEED.
SCENARIO 2: BANK GRADING ALONG RIGHT SIDE OF CHANNEL, PLANTING, BUT NO BIOENGINEERING STRUCTURES.
* IN THIS SCENARIO ACCESS TO THE RIGHT SIDE OF THE RIVER WOULD BE LIMITED TO A WEEK OF WORKING IN WET. A TEMPORARY STREAM CROSSING
MAY BE PLACED, BUT ACCESS PATH WOULD NOT BE NECESSARY ON THE RIGHT SIDE OF RIVER.
* EROSION CONTROL MEASURES WOULD INCLUDE THE PLACEMENT OF COIR FIBER EROSION CONTROL MATTING ON STREAM BANKS, TEMPORARY AND
PERMANENT SEEDING, AND THE USE OF STOCKPILES AND CONSTRUCTION ENTRANCES AND THEIR ASSOCIATED STABILIZATION MEASURES FROM PHASE I.
SCENARIO 3: BANK GRADING ALONG RIGHT SIDE OF CHANNEL, BIOENGINEERING STRUCTURES, AND PLANTING
* IN THIS SCENARIO RIVER ACCESS MAY EXTEND TO 2 WEEKS. A TEMPORARY STREAM CROSSING WOULD BE INSTALLED UPSTREAM OF THE OLD DAM
LOCATION, AND AN ACCESS PATH WOULD BE USED ALONG THE RIGHT BANK.
* ADDITIONAL EROSION CONTROL MEASURES WOULD INCLUDE THE PLACEMENT OF COIR FIBER EROSION CONTROL MATTING ON STREAM BANKS,
TEMPORARY AND PERMANENT SEEDING, THE USE OF STOCKPILES AND CONSTRUCTION ENTRANCES AND THEIR ASSOCIATED STABILIZATION MEASURES
FROM PHASE I, AND STRAW WATTLES ALONG THE ACCESS PATH ALONG THE RIGHT BANK.
Y
Ward Mill Dam Removal Project
Watauga County, North Carolina
Erosion and Sediment Control
z
3
z
Project Engineer:
u
3
8
b

Y
Projects\005-10007 Wards Mill Dam \Cadd\Plans\10007-De
FLOW
VANE ARM
LENGTH
(Y)
SCOUR
POOL
INVERT ELEVATION
PER PROFILE
B'
EXCAVATE POOL
PER PROFILE
Plan View
NOTES:
1. LAYOUT DIMENSION AND ELEVATIONS ARE
PROVIDED ON PLAN SHEET.
2. ONSITE STONE OF EQUAL SIZE MAY BE USED
FOR BACKFILL.
3. BACKFILL STONE SHALL BE MIXED WITH
ALLUVIAL MATERIAL TO FILL VOIDS.
4. BOULDERS SIZE SHALL BE 4'x3'x2.5'.
5. CHINK HEADER & FOOTER BOULDERS BEFORE
APPLYING FABRIC.
6. OPTION TO USE LARGE LOGS TO BUILD
STRUCTURE IF AVAILABLE.
Rock Vane
Not to Scale
BACKFILL (ON -SITE NATIVE
MATERIALS OR NO. 57 STONE)
NONWOVEN TOE OF SLOPE
FILTER FABRIC
TOP OF B N
SLOPE
CLASS A/B
STONE
CLASS 1
STONE
Section A -A'
STRUCTURE INVERT
ELEVATION PER PROFILE
HEADER ROCK
OFFSET HEADER
0.25' TO 0.5'
UPSTREAM OF FOOTER
CHANNEL BED
CLASS 1/2 SPLASH ROCK
FOOTER ROCK
EXTEND FILTER FABRIC
5' MIN. UPSTREAM
HEADER ROCK
Profile View B-B'
FOOTER ROCK
CLASS 1/2 FLOODPLAIN SILL STONE
FLOW
TOE OF SLOPE (TYP)
TOP OF BANK (TYP) aPit...NM INA*
rb • .
dr
•
Plan View
NOTES:
1. LAYOUT DIMENSION AND ELEVATIONS ARE
PROVIDED ON PLAN SHEET.
2. ONSITE STONE OF EQUAL SIZE MAY BE USED
FOR BACKFILL.
3. FLOODPLAIN SILL STONE SHALL BE MIXED WITH
ALLUVIAL MATERIAL TO FILL VOIDS.
Emmmimm
B'
CAP WITH SURFACE MARKER BOULDERS TO
MARK LOCATION OF SILL - AVOID PLANTING
DEEP ROOTED PLANTS OVER TOP OF SILL
OE OF
SLOPE
Floodplain Sill
Not to Scale
GROUND SURFACE
Section A -A' CLASS 1/2
STRUCTURE ELEVATIONS PER PLAN
MARKER BOULDERS NOT SHOWN IN VIEW
MIX OF CLASS 1/2 AND
RIVER MATERIAL
Profile View B-B'
BRANCH CUTTINGS (TYP)
SAME SPECIES AS LIVESTAKES
16 GAUGE GALVANIZED
WIRE SECURED TO STAKES
Section View
SHALL BE A MINIMUM
OF 35 BRANCH CUTTINGS
PER SQUARE YARD
(1 INCH MAX. DIAMETER)
2' to 3'
SECURE WITH 24"
LONG STAKES (TYP)
16 GAUGE GALVANIZED
WIRE SECURED TO STAKES
TOP OF BANK TYP
FILL IN GAPS WITH
TOP SOIL.
Brush Mattress
Not to Scale
Eco-Stake
Typical Stakes
NOTE:
1. STAKES SHALL BE 2" X 2" X 24" OR 2" X
2" X 36" AS DIRECTED BY THE
ENGINEER.
2. ROOTED/LEAFED CONDITIONS OF THE
LIVING PLANT MATERIAL IS NOT
REPRESENTATIVE AT THE TIME OF
INSTALLATION.
INSTALL ADDITIONAL VEGETATION SUCH AS
LIVE STAKES, ROOTED SEEDLINGS, AND ETC.
COMPACTED SOIL 12" TO 18" THICK
LIVE CUTTINGS, MIX IN SOIL
BIODEGRADABLE EROSION
CONTROL FABRIC (SEE INSET"A")
- BASE FLOW
STREAMBED
ROCK TOE PROTECTION (CLASS 1/2)
USE BRUSH/LOG MATRIX IF AVAILABLE
DEPTH SHALL EXCEED MAX POOL BY 2'
Section View
NOTE:
1. ROOTED/LEAFED CONDITION OF THE LIVING PLANT MATERIAL
IS NOT REPRESENTATIVE OF THE TIME OF INSTALLATION.
2. BOTTOM OF FIRST COMPACTED EARTH LIFT TO BE PLACED 6"
ABOVE NORMAL BASEFLOW.
3. NUMBER OF COMPACTED EARTH LIFTS TO VARY DEPENDING
ON DESIGN TOP OF BANK HEIGHT.
OUTER LAYER 26 OZ / YDt
COIR MATTING
HEIGHT VARIES
BUILD HIGHER THAN
FLOODPLAIN BEHIND LIFT
0 ACCOMMODATE SETTLING
Vegetated Soil Lift
Not to Scale
INNER LAYER 11.2 OZ. / YD'
COCONUT FIBER BLANKET
Inset "A"
Matting and Blanket
Typical Stakes
p`��, � SSI�.i�-9
0402
1�2C " GSv4=tttttttttttttt
z
z
Project Engineer:
u
a

\Projects\005-10007 Wards Mill Dam \Cadd\Plans\10007-De
PROJECT SPECIFIC NOTE:
THE PRIMARY ENTRANCE IS FROM GRAVEL ONTO AN EXISTING STONE ACCESS. THERE IS
NO BENEFIT TO APPLYING STONE. THE "SECONDARY ENTRANCE" IS ONTO SOIL AND
SHALL BE PROTECTED IF USE FOR ACCESS OFF OF THE GRAVEL ROAD. PROTECTION
SHALL PROVIDE FOR ALL INSTALLATION NOTE CONDITIONS.
INSTALLATION NOTES:
CLASS A STONE
OR EQUAL,
8" DEPTH
1. PROVIDE TURNING RADIUS SUFFICIENT TO ACCOMMODATE LARGE TRUCKS.
2. LOCATE CONSTRUCTION ENTRANCE AT ALL POINTS OF INGRESS AND EGRESS
UNTIL SITE IS STABILIZED.
3. PLACE FILTER FABRIC BENEATH STONE.
4. USE CLASS A STONE OR OTHER COARSE AGGREGATE APPROVED BY THE
ENGINEER.
5. MUST BE MAINTAINED IN A CONDITION WHICH WILL PREVENT TRACKING OR
DIRECT FLOW OF MUD ONTO STREETS. PERIODIC TOP DRESSING WITH STONE
WILL BE NECESSARY.
6. REMOVE STONE UPON COMPLETION UNLESS DIRECTED OTHERWISE.
MAINTENANCE NOTES:
1. ALL CONSTRUCTION ENTRANCES SHOULD BE INSPECTED AT LEAST ONCE
WEEKLY OR AFTER 0.25" OF PRECIPITATION WITHIN 24 HOURS.
2. EXCESSIVE AMOUNTS OF SEDIMENT SHOULD BE REMOVED FROM THE
CONSTRUCTION ENTRANCE IMMEDIATELY.
3. ANY SEDIMENT TRACKED ONTO PUBLIC ROADS SHOULD BE CLEANED
IMMEDIATELY AND THE SOURCE OF THE SEDIMENT ADDRESSED.
Construction Entrance
Not to Scale
PUBLIC ROAD
12'�{
50' (MAY VARY)
3' MAX.
SPACING
WOODEN
STAKE (TYP) \
6" MIN. OVERLAB IN
DOWNSTREAM DIRECTION
AT MAP ENDS
TOP OF BANK
I I
�IIII I-1
A
7f(
Plan View
EROSION CONTROL
MATTING (TYP)
STAKE (TYP)
SEE SPECIAL SEEDING NOTE
TOE OF SLOPE
SPECIAL SEEDING NOTE:
APPLY JUNCUS SEED ALONG
BANK SLOPE THROUGHOUT
PROJECT AREA PRIOR TO
APPLYING MATTING.
TOE OF SLOPE
Section View
TOP OF BANK
SECURE MATTING IN
6" DEEP TRENCH
PROJECT SPECIFIC NOTE:
BANKS WILL BE MATTED AS PART OF PHASE 2. PHASE 1 WILL BE OF SHORT DURATION
AND THE PROPOSED APPROACH WILL ALLOW FOR SEVERAL MONTHS FOR RIVER
EROSION AND REDISTRIBUTION OF SEDIMENT WEDGE. AFTER THAT, A SECOND PHASE
WILL GRADE AND MAT BANKS, INSTALL BIOENGINEERING MEASURES, AND THEN
PLANT THE SITE.
18"
4"
Toe Stake
INSTALLATION NOTES:
DIMENSIONS MAY VARY
BY MANUFACTURER BUT
SHALL BE SUBJECT TO
DESIGNER APPROVAL. SHALL
RESIST BREAKAGE PER SPEC.
0 4"
11"
0.
f 11.25"
Wooden
Stake
1. USE 700 g/m2 DENSITY COIR MATTING.
2. SEED AND MULCH SLOPES PRIOR TO MATTING INSTALLATION.
3. TOE STAKES TO BE USED AT TOP AND TOE. 12" WOODEN STAKES
MAY BE USED ON SLOPE FACES.
MAINTENANCE NOTES:
1. ALL EROSION CONTROL MATTING SHOULD BE INSPECTED AT LEAST
ONCE WEEKLY OR AFTER 0.25" OF PRECIPITATION WITHIN 24
HOURS.
2. ANY MATTING FAILURES SHOULD BE REPAIRED WITHIN 24 HOURS.
3. TENTING (EROSION OCCURRING UNDERNEATH INSTALLED
MATTING) WILL REQUIRE PEELING BACK MATTING, REPAIRING ANY
RILLS, AND REAPPLYING THE MATTING.
Erosion Control Matting
Not to Scale
INSTALLATION NOTES:
1. USE WIRE A MINIUM OF 32" IN WIDTH AND
WITH A MAXIMUM 6" MESH SPACING.
2. USE FILTER FABRIC A MINIMUM OF 36" IN
WIDTH AND FASTEN ADEQUATELY TO THE
WIRES AS DIRECTED BY THE ENGINEER.
3. PROVIDE 5' STEEL POST OF THE
SELF -FASTENER ANGLE STEEL TYPE. ANGLE
STEEL TYPE.
MAINTENANCE NOTES:
1. ALL SILT FENCE SHOULD BE INSPECTED AT
LEAST ONCE WEEKLY OR AFTER 0.25" OF
PRECIPITATION WITHIN 24 HOURS.
2. TEARS IN THE FENCE, UNTRENCHED AREAS,
OR OTHER FENCE FAILURES SHOULD BE
REPAIRED WITHIN 24 HOURS.
3. SEDIMENT TRAPPED BEHIND SILT FENCE
SHOULD BE CAREFULLY REMOVED ONCE
DEPTH REACHES 6".
TOP AND BOTTOM STRAND
SHALL BE 10 GAUGE MIN.
WIRE
8' MAX. WITH WIRE
(6' MAX. WITHOUT WIRE)'
MIDDLE AND VERTICAL
WIRES SHALL BE 12
GAGE MIN.
u
FILTER FABRIC
COMPACTED FILL
EXTEND FABRIC
INTO TRENCH
Temporary Silt Fence or Sediment Barrier
Not to Scale
f
u
FILTER FABRIC
EXISTING GROUND
I STEEL POST
12'-0" DEPTH
FILTER OF 1" FLOW
DIA. WASHED STONE
STEEL FENCE POST
WIRE
HARDWARE CLOTH
FILTER OF 1" DIA.
WASHED STONE
SILT FENCE FLOW
END OF FILTER FABRIC
Plan View
INSTALLATION
Section View
TOP OF SILT FENCE
MUST BE AT LEAST 1'
ABOVE THE TOP OF
THE WASHED STONE
FILTER FABRIC
ON GROUND
BURY WIRE FENCE
AND HARDWARE CLOTH
REFER TO THE PLANS FOR LOCATIONS AND SPECIFICATIONS. DURING INSTALLATION OF THE SILT BARRIER OR
SILT FENCE, INSPECT THE INSTALLATION TO DETERMINE IF OUTLETS ARE NEEDED ACCORDING TO THE CRITERIA
SET FORTH IN THE SPECIFICATIONS FOR THE BARRIER AND FENCE. IF THERE ARE QUESTIONS OR PROBLEMS
WITH THE LOCATION, EXTENT, OR METHOD OF INSTALLATION, CONTACT THE ENGINEER, ARCHITECT, OR
RESPONSIBLE PERSONNEL ON THE SITE FOR ASSISTANCE. EROSION CONTROL PERSONNEL HAVE COPIES OF
INSTRUCTIONS AND MAY HAVE PHOTOGRAPHS OF PROPERLY INSTALLED OUTLETS AS AN AID TO
INSTALLATION.
IF THE SILT FENCE OUTLET IS NOT INSTALLED CORRECTLY THE FIRST TIME, IT WILL HAVE TO BE REBUILT.
DETERMINE THE EXACT LOCATION ON THE GROUND BEFORE COMPLETING INSTALLATION OF THE SILT FENCE,
TAKING INTO CONSIDERATION:
INSTALL THE OUTLET AT THE LOWEST POINT (5) IN THE BARRIER OR FENCE WHERE WATER WILL POND.
INSTALL THE OUTLET WHERE IT IS ACCESSIBLE FOR INSTALLATION, MAINTENANCE, AND REMOVAL.
ALLOW AT LEAST:
15 FEET BETWEEN THE BARRIER OR FENCE AND SINGLE -STORY BUILDINGS.
25 FEET FOR FORK LIFTS BETWEEN THE BARRIER OR FENCE AND MULTIPLE -STORY BUILDINGS.
10 FEET BETWEEN THE BARRIER OR FENCE AND THE TOE OF FILL SLOPES.
PLACE THE OUTLET SO THAT WATER FLOWING THROUGH IT WILL NOT CREATE AN EROSION HAZARD BELOW:
AVOID STEEP SLOPES BELOW THE OUTLET AND AREAS WITHOUT PROTECTIVE VEGETATION. USE SLOPE DRAINS
IF NECESSARY.
DETERMINE THE LOCATION OF THE OUTLET: FOR A SILT BARRIER, WHEN THE TRENCH IS DUG TO BURY THE
BOTTOM OF THE FABRIC BECAUSE THE BARRIER WILL BE OMITTED AT THE OUTLET; FOR A SILT FENCE, WHEN
THE WIRE FENCE IS IN PLACE BECAUSE THE FILTER FABRIC WILL BE OMITTED AT THE OUTLET.
REFER TO THE ILLUSTRATIONS OF THE OUTLET IN THE PLAN.
CLEAR STUMPS AND ROOTS FROM THE LOCATION OF THE OUTLET. CLEAR ADEQUATE ACCESS FOR THE
EQUIPMENT NEEDED FOR INSTALLATION, MAINTENANCE, AND REMOVAL.
FOR A SILT BARRIER:
STEEL FENCE POST
SET MAX 2' APART
JUST BELOW THE GAP IN THE BARRIER, PLACE A
LAYER OF FILTER FABRIC ON THE GROUND TO
PROTECT THE SOIL FROM EROSION BY
OUTFLOW FROM THE OUTLET; PLACE 6 INCHES
OF THE UPPER EDGE IN THE TRENCH. STAKE THE
REMAINING EDGES OF THE FABRIC TO HOLD IT
IN PLACE.
ALONG THE GAP WHERE THE OUTLET WILL GO,
PLACE STEEL FENCE POSTS FOR STRENGTH. THE
POSTS MUST BE A MAXIMUM OF 2 FEET APART
AND DRIVEN INTO SOLID GROUND AT LEAST 18
INCHES.
PLACE HARDWARE CLOTH (WELDED
GALVANIZED SCREEN WITH SQUARE 1/4 -
1/2-INCH HOLES) ON THE UPHILL SIDE OF THE
POSTS TO HOLD THE WASHED STONE IN PLACE.
PUT 6 INCHES OF THE BOTTOM OF THE CLOTH
IN THE TRENCH AND FASTEN IT TO THE POSTS
WITH LENGTHS OF WIRE.
BURY THE BOTTOM OF THE HARDWARE CLOTH
AND THE UPPER EDGE OF THE FILTER FABRIC
BELOW THE OUTLET IN THE TRENCH AND
COMPACT THE FILL.
PLACE A FILTER OF 1-INCH DIAMETER WASHED
STONE ON THE UPHILL SIDE OF THE OUTLET.
PILE THE STONE UP TO THE TOP OF THE
HARDWARE CLOTH AND OVER THE JOINT
BETWEEN THE OUTLET AND THE BARRIER.
4' MIN.
Front
View
END OF FILTER FABRIC
SILT FENCE
BURY WIRE FENCE, FILTER
FABRIC, AND HARDWARE
CLOTH IN TRENCH
FOR A SILT FENCE:
JUST BELOW THE GAP IN THE BARRIER, PLACE
A LAYER OF FILTER FABRIC ON THE GROUND
TO PROTECT THE SOIL FROM EROSION BY
OUTFLOW FROM THE OUTLET; PLACE 6
INCHES OF THE UPPER EDGE IN THE TRENCH.
STAKE THE OTHER EDGES OF THE FABRIC TO
HOLD IT IN PLACE.
ALONG THE GAP WHERE THE OUTLET WILL
GO, PLACE ADDITIONAL STEEL FENCE POSTS
FOR STRENGTH. THE POSTS MUST BE A
MAXIMUM OF 2 FEET APART AND DRIVEN
INTO SOLID GROUND AT LEAST 18 INCHES.
PLACE HARDWARE CLOTH (WELDED
GALVANIZED SCREEN WITH SQUARE 1/4 -
1/2-INCH HOLES) ON THE UPHILL SIDE OF THE
POSTS TO HOLD THE WASHED STONE IN
PLACE. PUT 6 INCHES OF THE BOTTOM OF THE
CLOTH IN THE TRENCH AND FASTEN IT TO THE
POSTS WITH LENGTHS OF WIRE.
BURY THE BOTTOM OF THE HARDWARE
CLOTH, THE UPPER EDGE OF THE FILTER
FABRIC BELOW THE OUTLET, AND THE WIRE
FENCE IN THE TRENCH AND COMPACT THE
FILL.
PLACE A FILTER OF 1-INCH DIAMETER WASHED
STONE ON THE UPHILL SIDE OF THE OUTLET.
PILE THE STONE UP TO THE TOP OF THE
HARDWARE CLOTH AND OVER THE JOINT
BETWEEN THE OUTLET AND THE SILT FENCE.
Temporary Silt Fence Gravel Outlet
Not to Scale
Ward Mill Dam Removal Project
Watauga County, North Carolina
Ji
z
5
u
3
c
E
6

DIBBLE BAR
\Projects\005-10007 Wards Mill Dam \Cadd\Plans\10007-De
1.5x CONTAINER
DEPTH
2' TYPICAL
SUPPLEMENT WITH
SOIL FROM ON- OR
OFF -SITE AS NECESSARY
2x CONTAINER WIDTH
Containerized Planting
Not to Scale
NOTE:
FOR CONTAINER PLANTS, EVALUATE SITE PLANTING
CONDITIONS AND PROVIDE SOIL CONDITIONER
WHERE SITE IS TOO ROCKY TO SUCCESSFULLY
ESTABLISH PLANTS WITHOUT AMENDMENT.
BUFFER WIDTH
VARIES
SPACING PER
PLANTING PLAN
INSERT THE DIBBLE, OR
SHOVEL, STRAIGHT
DOWN INTO THE SOIL
TO THE FULL DEPTH OF
THE BLADE AND PULL
BACK ON THE HANDLE
TO OPEN THE PLANTING
HOLE. (DO NOT ROCK
THE SHOVEL BACK AND
FORTH AS THIS CAUSES
SOIL IN THE PLANTING
HOLE TO BE
COMPACTED,
INHIBITING ROOT
GROWTH.
BANKFULL
LIVESTAKES
RESTORED
CHANNEL
Section View
REMOVE THE DIBBLE, OR
SHOVEL, AND PUSH THE
SEEDLING ROOTS DEEP
INTO THE PLANTING HOLE.
PULL THE SEEDLING BACK
UP TO THE CORRECT
PLANTING DEPTH (THE
ROOT COLLAR SHOULD BE
1 TO 3 INCHES BELOW THE
SOIL SURFACE). GENTLY
SHAKE THE SEEDLING TO
ALLOW THE ROOTS TO
STRAIGHTEN OUT. DO
NOT TWIST OR SPIN THE
SEEDLING OR LEAVE THE
ROOTS 1-ROOTED.
BAREROOT OR
CONTAINER
PLANTINGS
INSERT THE DIBBLE, OR
SHOVEL, SEVERAL
INCHES IN FRONT OF
THE SEEDLING AND
PUSH THE BLADE
HALFWAY INTO THE
SOIL. TWIST AND PUSH
THE HANDLE FORWARD
TO CLOSE THE TOP OF
THE SLIT TO HOLD THE
SEEDLING IN PLACE.
PLANTING BAR SHALL HAVE A
BLADE WITH ATRIANGULAR
CROSS-SECTION, AND SHALL
BE 12 INCHES LONG, 4
INCHES WIDE AND 1 INCH
THICK AT CENTER.
ROOTING PRUNING
ALL ROOTS SHALL BE PRUNED
TO AN APPORIATE LENGTH
TO PREVENT 1-ROOTING.
PUSH THE DIBBLE, OR
SHOVEL, DOWN TO
THE FULL DEPTH OF
THE BLADE.
Bare Root Planting
Not to Scale
NOTES:
1. ALL PLANTS SHALL BE
PROPERLY HANDLED PRIOR TO
INSTALLATION TO INSURE
SURVIVAL.
PULL BACK ON THE
HANDLE TO CLOSE THE
BOTTOM OF THE
PLANTING HOLD. THEN
PUSH FORWARD TO CLOSE
THE TOP, ELIMINATING AIR
POCKETS AROUND THE
ROOT.
REMOVE THE DIBBLE, OR
SHOVEL, AND CLOSE AND
FIRM UP THE OPENING
WITH YOUR HEEL. BE
CAREFUL TO AVOID
DAMAGING THE SEEDLING.
LIVESTAKE 1' OFF BASE
FLOW EDGE OF WATER
HERBACEOUS PLUG (TYP)
TOE OF SLOPE
1/2" TO 2"
DIAMETER
24" or 3 equally spaced rows
BANKFULL TOP OF BANK
�v.
LIVE STAKE (TYP)
SEE PLAN VIEW
FOR SPACING
Section View - Large Streams
2' TO 3' LIVE STAKE
TAPERED AT BOTTOM
Eve Stake Detail
EROSION CONTROL
MATTING
(SEE DETAIL)
RIPARIAN BUFFER PLANTING
NOTES:
LIVE STAKE (TYP) TOP OF BANK
2' SPACING FOR HERBACEOUS PLUGS
Plan View
1. REFER TO SPECIFICATIONS FOR PROPER STORAGE,
HANDLING AND INSTALLATION.
2. FORM PILOT HOLE IN HARD SOIL OR STONY CONDITIONS
TO PREVENT DAMAGE TO LIVE STAKES.
3. LIVE STAKES TO BE PLANTED IN AREAS AS SHOWN ON
PLANS AND DIRECTED BY THE ENGINEER.
4. INSTALL DORMANT PRIOR TO LEAF OUT. DEPICTED
CONDITION WITH LEAVES NOT REPRESENTATIVE OF
STAKES AT TIME OF INSTALLATION.
5. INSTALL STAKES MINIMUM OF 18" INTO GROUND.
6. TRIM OFF DAMAGED/FRAYED STAKE TOPS.
TOE OF SLOPE
PLUG (TYP)
USE A MINIMUM
OF 2 STAKES ON
UPSLOPE SIDE
FLOW
GROUND
WATTLE
Plan View
B
USE A MINIMUM OF
4 STAKES ON
DOWNSLOPE SIDE
DOWNSLOPE
MATTING
MIN. 2 STAKES ON UPSLOPE —\
GROUND
—
III—III—M—I 1—
MATTING
MINIMUM 4 STAKES ON
DOWNSLOPE
III —III —III —I I I
--- 11 I-1 1T-1
=III=
III= 1 11
Section B-B'
NOTES:
1. USE A MINIMUM 12 INCH DIAMETER WATTLE
2. WATTLES SHALL BE FILLED WITH STRAW OR OTHER APPROVED MATERIAL.
3. USE 24 INCH LONG WOODEN STAKES WITH A 2"X2" NOMINAL CROSS SECTION
4. INSTALL WATTLES TO HEIGHT OF SLOPE SO FLOW WILL NOT WASH AROUND WATTLE
AND SCOUR SLOPES
5. SPACING FOR WATTLES SHALL BE DETERMINED BY THE ENGINEER.
6. FOR USE OF WATTLE IN A DITCH, GRADE OF DITCH MUST BE <2.5%.
7. WATTLES SHALL BE INSPECTED AFTER AN 1/2" OR GREATER RAINFALL EVENT.
Ward Mill Dam Removal Project
Watauga County, North Carolina
z
5
3
u
Live Staking & Herbaceous Plugs
Not to Scale
Straw Wattles
Not to Scale
s
c
6

Y
Projects\005-10007 Wards Mill Dam \Cadd\Plans\10007-De
SELF -INSPECTION,
SECTION A: SELF -INSPECTION
PART III
RECORDKEEPING AND REPORTING
normal business hours in accordance with the table
site conditions would cause the safety of the inspection
may be delayed until the next business day on
In addition, when a storm event of equal to or
of normal business hours, the self -inspection shall be
of the next business day. Any time when inspections
Inspection Record.
Self -inspections are required during
below. When adverse weather or
personnel to be in jeopardy, the inspection
which it is safe to perform the inspection.
greater than 1.0 inch occurs outside
performed upon the commencement
were delayed shall be noted in the
Inspect
Frequency
(during normal
business hours)
Inspection records must include:
(1) Rain gauge
maintained in
good worldng
order
Daily
Daily rainfall amounts.
If no daily rain gauge observations are made during weekend or
holiday periods, and no individual -day rainfall Information is
available, record the cumulative rain measurement for those un-
attended days (and this will determine If a site Inspection Is
needed). Days on which no rainfall occurred shall be recorded as
"zero" The permittee may use another rain -monitoring device
approved by the Division.
(2) E&SC
Measures
At least once per
7 calendar days
and within 24
hours of a rain
event > 1.0 inch In
24 hours
1. Identification of the measures inspected,
2. Date and time of the inspection,
3. Name of the person performing the Inspection,
4. Indication of whether the measures were operating
properly,
5. Description of maintenance needs for the measure,
6. Description, evidence, and date of corrective actions taken.
(3) Stormwater
discharge
outfalls (SDOs)
At least once per
7 calendar days
and within 24
hours of a rain
event s 1.0 Inch In
24 hours
1. Identification of the discharge outfalls inspected,
2. Date and time of the inspection,
3. Name of the person performing the Inspection,
4. Evidence of Indicators of stormwater pollution such as oil
sheen, floating or suspended solids or discoloration,
5. Indication of visible sediment leaving the she,
6. Description, evidence, and date of corrective actions taken.
(4) Perimeter of
site
At least once per
7 calendar days
and within 24
hours of a rain
event > 1.0 Inch In
24 hours
If visible sedimentation Is found outside site limits, then a record
of the following shall be made:
1. Actions taken to clean up or stabilize the sediment that has left
the site limits,
2. Description, evidence, and date of corrective actions taken, and
3. An explanation as to the actions taken to control future
releases.
(5) Streams or
wetlands onsite
or off site
(where
accessible)
At least once per
7 calendar days
and within 24
hours of a rain
event ? 1.0 inch In
24 hours
If the stream or wetland has increased visible sedimentation or a
stream has visible Increased turbidity from the construction
activity, then a record of the following shall be made:
I. Description, evidence and date of corrective actions taken, and
2. Records of the required reports to the appropriate Division
Regional Office per Part III, Section C, Item (2)(a) of this permit
of this penult.
(6) Ground
stabilization
measures
After each phase
of grading
1. The phase of grading (Installation of perimeter E&SC
measures, clearing and grubbing, installation of storm
drainage fadlities, completion of all land -disturbing
actMty, construction or redevelopment, permanent
ground rover).
2. Documentation that the required ground stabilization
measures have been provided within the required
timeframe or an assurance that they will be provided as
soon as possible.
NOTE: The rain inspection resets the required 7 calendar day inspection requirement.
SELF -INSPECTION, RECORDKEEPING
SECTION B: RECORDKEEPING
PART III
AND REPORTING
deviation shall be kept on the site. The
throughout the coverage under this permit. The
shall be documented in the manner described:
1. E&SC Plan Documentation
The approved E&SC plan as well as any approved
approved E&SC plan must be kept up-to-date
following items pertaining to the E&SC plan
Item to Document
Documentation Requirements
(a) Each E&SC Measure has been installed
and does not significantly deviate from the
locations, dimensions and relative elevations
shown on the approved E&SC Plan.
Initial and date each E&SC Measure on a copy
of the approved E&SC Plan or complete, date
and sign an inspection report that lists each
E&SC Measure shown on the approved E&SC
Plan. This documentation is required upon the
initial installation of the E&SC Measures or if
the E&SC Measures are modified after initial
installation.
(b) A phase of grading has been completed.
Initial and date a copy of the approved E&SC
Plan or complete, date and sign an inspection
report to indicate completion of the
construction phase.
(c) Ground cover is located and installed
in accordance with the approved E&SC
Plan.
Initial and date a copy of the approved E&SC
Plan or complete, date and sign an inspection
report to indicate compliance with approved
ground cover specifications.
(d) The maintenance and repair
requirements for all E&SC Measures
have been performed.
Complete, date and sign an inspection report.
(e) Corrective actions have been taken
to E&SC Measures.
Initial and date a copy of the approved E&SC
Plan or complete, date and sign an inspection
report to indicate the completion of the
corrective action.
2. Additional Documentation
In addition to the E&SC Plan documents above, the following items shall be kept on the site
and available for agency inspectors at all times during normal business hours, unless the
Division provides a site -specific exemption based on unique site conditions that make this
requirement not practical:
(a) This general permit as well as the certificate of coverage, after it is received.
(b) Records of inspections made during the previous 30 days. The permittee shall record the
required observations on the Inspection Record Form provided by the Division or a similar
inspection form that includes all the required elements. Use of electronically -available
records in lieu of the required paper copies will be allowed if shown to provide equal access
and utility as the hard -copy records.
(c) All data used to complete the Notice of Intent and older inspection records shall be
maintained for a period of three years after project completion and made available upon
request. [40 CFR 122.41]
PART III
SELF -INSPECTION, RECORDKEEPING AND REPORTING
SECTION C: REPORTING
1. Occurrences that must be reported
Permittees shall report the following occurrences:
(a) Visible sediment deposition in a stream or wetland.
(b) Oil spills if:
• They are 25 gallons or more,
• They are less than 25 gallons but cannot be cleaned up within 24 hours,
• They cause sheen on surface waters (regardless of volume), or
• They are within 100 feet of surface waters (regardless of volume).
(a) Releases of hazardous substances in excess of reportable quantities under Section 311
of the Clean Water Act (Ref: 40 CFR 110.3 and 40 CFR 117.3) or Section 102 of CERCLA
(Ref: 40 CFR 302.4) or G.S. 143-215.85.
(b) Anticipated bypasses and unanticipated bypasses.
(c) Noncompliance with the conditions of this permit that may endanger health or the
environment.
2. Reporting Timeframes and Other Requirements
After a permittee becomes aware of an occurrence that must be reported, he shall contact
the appropriate Division regional office within the timeframes and in accordance with the
other requirements listed below. Occurrences outside normal business hours may also be
reported to the Division's Emergency Response personnel at [phone], (800)
858-0368 or [phone].
Occurrence
Reporting Timeframes (After Discovery) and Other Requirements
(a) Visible sediment
deposition in a
stream or wetland
• Within 24 hours, an oral or electronic notification.
• Within 7 calendar days, a report that contains a description of the
sediment and actions taken to address the cause of the deposition.
Division staff may waive the requirement for a written report on a
case -by -case basis.
• If the stream is named on the NC 303(d] list as impaired for sediment -
related causes, the permittee may be required to perform additional
monitoring, inspections or apply more stringent practices if staff
determine that additional requirements are needed to assure compliance
with the federal or state Impaired -waters conditions.
(b) Oil spills and
release of
hazardous
substances per Item
1(b)-(c) above
• Within 24 hours, an oral oreledronic notification. The notification
shall include information about the date, time, nature, volume and
location of the spill or release.
(c) Anticipated
bypasses [40 CFR
122.41(m)(3)]
• A report at least ten days before the date of the bypass, if possible.
The report shall include an evaluation of the anticipated quality and
effect of the bypass.
(d) Unanticipated
bypasses [40 CFR
122.41(m)(3)]
• Within 24 hours, an oral or electronic notification.
• Within 7 calendar days, a report that includes an evaluation of the
quality and effect of the bypass.
(e) Noncompliance
with the conditions
of this permit that
may endanger
health or the
environment[40
CFR 122.41[1)(7)]
• Within24 hours, an oral or electronic notification.
• Within 7 calendar days, a report that contains a description of the
noncompliance, and its causes; the period of noncompliance,
including exact dates and times, and if the noncompliance has not
been corrected, the anticipated time noncompliance is expected to
continue; and steps taken or planned to reduce, eliminate, and
prevent reoccurrence of the noncompliance. [40 CFR 122.41(I)(6).
• Division staff may waive the requirement for a written report on a
case -by -case basis.
NCGO1 SELF -INSPECTION, RECORDKEEPING AND REPORTING
EFFECTIVE: 04/01/19
/fk F.ESAORO4/%.
tttttttttttttt
U
z
Q
Project Engineer:
u
0
a

Y
Projects\005-10007 Wards Mill Dam \Cadd\Plans\10007-De
GROUND STABILIZATION AND MATERIALS HANDLING PRACTICES FOR COMPLIANCE WITH
THE NCGO1 CONSTRUCTION GENERAL PERMIT
Implementing the details and specifications on this plan sheet will result in the construction
activity being considered compliant with the Ground Stabilization and Materials Handling
sections of the NCGO1 Construction General Permit (Sections E and F, respectively). The
permittee shall comply with the Erosion and Sediment Control plan approved by the
delegated authority having jurisdiction. All details and specifications shown on this sheet
may not apply depending on site conditions and the delegated authority having jurisdiction.
SECTION E: GROUND STABILIZATION
Required Ground Stabilization Timeframes
Stabilize within this
Site Area Description
many calendar
Timeframe variations
days after ceasing
land disturbance
(a) Perimeter dikes,
swales, ditches, and
perimeter slopes
7
None
(b) High Quality Water
7
None
(HQW) Zones
(c) Slopes steeper than
If slopes are 10' or less in length and are
3:1
7
not steeper than 2:1, 14 days are
allowed
-7 days for slopes greater than 50' in
length and with slopes steeper than 4:1
(d) Slopes 3:1 to 4:1
14
-7 days for perimeter dikes, swales,
ditches, perimeter slopes and HQW
Zones
-10 days for Falls Lake Watershed
(e) Areas with slopes
-7 days for perimeter dikes, swales,
ditches, perimeter slopes and HQW Zones
flatter than 4:1
14
-10 days for Falls Lake Watershed unless
there is zero slope
Note: After the permanen cessation of construction activities, any areas with temporary
ground stabilization shall be converted to permanent ground stabilization as soon as
practicable but in no case onger than 90 calendar days after the last land disturbing
activity. Temporary ground stabilization shall be maintained in a manner to render the
surface stable against accelerated erosion until permanent ground stabilization is achieved.
GROUND STABILIZATION SPECIFICATION
Stabilize the ground sufficiently so that rain will not dislodge the soil. Use one of the
techniques in the table below:
Temporary Stabilization
Permanent Stabilization
• Temporary grass seed covered with straw or
• Permanent grass seed covered with straw or
other mulches and tackifiers
other mulches and tackifiers
• Hydroseeding
• Geotextile fabrics such as permanent soil
• Rolled erosion control products with or
reinforcement matting
without temporary grass seed
• Hydroseeding
• Appropriately applied straw or other mulch
• Shrubs or other permanent plantings covered
• Plastic sheeting
with mulch
• Uniform and evenly distributed ground cover
sufficient to restrain erosion
• Structural methods such as concrete, asphalt or
retaining walls
• Rolled erosion control products with grass seed
POLYACRYLAMIDES (PAMS) AND FLOCCULANTS
1. Select flocculants that are appropriate for the soils being exposed during
construction, selecting from the NC DWR List of Approved PAMS/Flocculants.
2. Apply flocculants at or before the inlets to Erosion and Sediment Control Measures.
3. Apply flocculants at the concentrations specified in the NC DWR List of Approved
PAMS/Flocculants and in accordance with the manufacturer's instructions.
4. Provide ponding area for containment of treated Stormwater before discharging
offsite.
5. Store flocculants in leak -proof containers that are kept under storm -resistant cover
or surrounded by secondary containment structures.
EQUIPMENT AND VEHICLE MAINTENANCE
1. Maintain vehicles and equipment to prevent discharge of fluids.
2. Provide drip pans under any stored equipment.
3. Identify leaks and repair as soon as feasible, or remove leaking equipment from the
project.
4. Collect all spent fluids, store in separate containers and properly dispose as
hazardous waste (recycle when possible).
5. Remove leaking vehicles and construction equipment from service until the problem
has been corrected.
6. Bring used fuels, lubricants, coolants, hydraulic fluids and other petroleum products
to a recycling or disposal center that handles these materials.
LITTER, BUILDING MATERIAL AND LAND CLEARING WASTE
1. Never bury or burn waste. Place litter and debris in approved waste containers.
2. Provide a sufficient number and size of waste containers (e.g dumpster, trash
receptacle) on site to contain construction and domestic wastes.
3. Locate waste containers at least 50 feet away from storm drain inlets and surface
waters unless no other alternatives are reasonably available.
4. Locate waste containers on areas that do not receive substantial amounts of runoff
from upland areas and does not drain directly to a storm drain, stream or wetland.
5. Cover waste containers at the end of each workday and before storm events or
provide secondary containment. Repair or replace damaged waste containers.
6. Anchor all lightweight items in waste containers during times of high winds.
7. Empty waste containers as needed to prevent overflow. Clean up immediately if
containers overflow.
8. Dispose waste off -site at an approved disposal facility.
9. On business days, clean up and dispose of waste in designated waste containers.
PAINT AND OTHER LIQUID WASTE
1. Do not dump paint and other liquid waste into storm drains, streams or wetlands.
2. Locate paint washouts at least 50 feet away from storm drain inlets and surface
waters unless no other alternatives are reasonably available.
3. Contain liquid wastes in a controlled area.
4. Containment must be labeled, sized and placed appropriately for the needs of site.
5. Prevent the discharge of soaps, solvents, detergents and other liquid wastes from
construction sites.
PORTABLE TOILETS
1. Install portable toilets on level ground, at least 50 feet away from storm drains,
streams or wetlands unless there is no alternative reasonably available. If 50 foot
offset is not attainable, provide relocation of portable toilet behind silt fence or place
on a gravel pad and surround with sand bags.
2. Provide staking or anchoring of portable toilets during periods of high winds or in high
foot traffic areas.
3. Monitor portable toilets for leaking and properly dispose of any leaked material.
Utilize a licensed sanitary waste hauler to remove leaking portable toilets and replace
with properly operating unit.
EARTHEN STOCKPILE MANAGEMENT
1. Show stockpile locations on plans. Locate earthen -material stockpile areas at least
50 feet away from storm drain inlets, sediment basins, perimeter sediment controls
and surface waters unless it can be shown no other alternatives are reasonably
available.
2. Protect stockpile with silt fence installed along toe of slope with a minimum offset of
five feet from the toe of stockpile.
3. Provide stable stone access point when feasible.
4. Stabilize stockpile within the timeframes provided on this sheet and in accordance
with the approved plan and any additional requirements. Soil stabilization is defined
as vegetative, physical or chemical coverage techniques that will restrain accelerated
erosion on disturbed soils for temporary or permanent control needs.
A
ONSITE CONCRETE WASHOUT
STRUCTURE VATH LINER
AA
ry
ELauu t rmUnr MAR
RFI OW GRADL,VSHOOUT STRUCTURE
ABOVE GRADE WASHOIIT STRUG.TIRF
CONCRETE WASHOUTS
1. Do not discharge concrete or cement slurry from the site.
2. Dispose of, or recycle settled, hardened concrete residue in accordance with local
and state solid waste regulations and at an approved facility.
3. Manage washout from mortar mixers in accordance with the above item and in
addition place the mixer and associated materials on impervious barrier and within
lot perimeter silt fence.
4. Install temporary concrete washouts per local requirements, where applicable. If an
alternate method or product is to be used, contact your approval authority for
review and approval. If local standard details are not available, use one of the two
types of temporary concrete washouts provided on this detail.
5. Do not use concrete washouts for dewatering or storing defective curb or sidewalk
sections. Stormwater accumulated within the washout may not be pumped into or
discharged to the storm drain system or receiving surface waters. Liquid waste must
be pumped out and removed from project.
6. Locate washouts at least 50 feet from storm drain inlets and surface waters unless it
can be shown that no other alternatives are reasonably available. At a minimum,
install protection of storm drain inlet(s) closest to the washout which could receive
spills or overflow.
7. Locate washouts in an easily accessible area, on level ground and install a stone
entrance pad in front of the washout. Additional controls may be required by the
approving authority.
8. Install at least one sign directing concrete trucks to the washout within the project
limits. Post signage on the washout itself to identify this location.
9. Remove leavings from the washout when at approximately 75% capacity to limit
overflow events. Replace the tarp, sand bags or other temporary structural
components when no longer functional. When utilizing alternative or proprietary
products, follow manufacturer's instructions.
10. At the completion of the concrete work, remove remaining leavings and dispose of
in an approved disposal facility. Fill pit, if applicable, and stabilize any disturbance
caused by removal of washout.
HERBICIDES, PESTICIDES AND RODENTICIDES
1. Store and apply herbicides, pesticides and rodenticides in accordance with label
restrictions.
2. Store herbicides, pesticides and rodenticides in their original containers with the
label, which lists directions for use, ingredients and first aid steps in case of
accidental poisoning.
3. Do not store herbicides, pesticides and rodenticides in areas where flooding is
possible or where they may spill or leak into wells, stormwater drains, ground water
or surface water. If a spill occurs, clean area immediately.
4. Do not stockpile these materials onsite.
HAZARDOUS AND TOXIC WASTE
1. Create designated hazardous waste collection areas on -site.
2. Place hazardous waste containers under cover or in secondary containment.
3. Do not store hazardous chemicals, drums or bagged materials directly on the ground.
NCGO1 GROUND STABILIZATION AND MATERIALS HANDLING
EFFECTIVE: 04/01 / 19
. .....
O4i
' SSri,.i '9
%74/ 4/0E 4,0
fl %I
u
Q Q
z
3
z
Project Engineer:
u
3