HomeMy WebLinkAbout20231153 Ver 2_More Info Received_20240306Shulls Mill Dam Removal Project
Watauga River Basin 06010103
Watauga County, North Carolina
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FINAL PLANS
BEFORE YOU DIG! ISSUED JANUARY 26, 2024
CALL1-800-632-4949
N.C.IT'S THE OSTHELAW! LAW! i
TER REVISED FEBRUARY 26 2024
Digitally signed
Jacob P. by Jacob P.
McLean
Mc Lean Date: 2024.02.26
16:46:30-05'00'
Sheet Index
Title Sheet
0.1
General Notes and Symbols
0.2
Existing Conditions
0.3
Typical Sections
0.4
Project Overview
1.0
Plan -Profile Sheets
2.1-2.3
Grading Sections
3.1-3.4
Phasing & Sequencing
4.1-4.4
Erosion and Sediment Control
5.1
Planting Tables
6.0
Planting Plan
6.1
Details
7.1-7.6
Project Directory
Engineering:
Owner:
Wildlands Engineering, Inc
HE Club, Inc.
License No. F-0831
1589 Dogwood
167-B Haywood Rd
Boone, NC 28607
Asheville, NC 28806
Jake McLean, Project Engineer
Project Manager:
828-774-5547
MountainTrue
Andy Hill
Surveying:
Kee Mapping and Surveying, PA
88 Central Avenue
Asheville, NC 28801
Drew V. Duinkerken, PLS
828-575-9021
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GENERAL NOTES
1. Under no circumstances will the Contractor exceed the limits of disturbance as shown on the Plans.
2. All erosion and sediment control practices shall comply with the North Carolina Erosion and Sediment Control
Planning and Design Manual. All project activities shall comply with all permit and waiver requirements and
conditions. Issued permits and waivers, as applicable, will be included in the project manual.
3. All materials shall be on hand before any work is started. All materials must be stored in an orderly manner
away from vehicular traffic, near the construction entrance, and away from waterways or storm drains in
appropriate containers and/or enclosures.
4. Locations for staging and stockpile areas and the temporary stream crossing have been provided on the Plans.
The contractor shall install and maintain erosion control devices sufficient to contain sediment around any
erodible material stockpile areas as directed. Alternative staging and/or stockpile areas and stream crossings
may be used by the Contractor provided that:
a. the areas are within the limits of disturbance,
b. all practices comply with the North Carolina Erosion and Sediment Control Planning and Design Manual,
and
c. that the Designer approves the areas prior to implementation.
d. no earthen -material stockpile or staging area shall be located within the 25-foot buffer zone of any surface
water classified as Trout Waters by the Environmental Management Commission.
5. When crossing an active section of new or old stream channel, a temporary stream crossing shall be installed
according to the detail and specification. The type of temporary stream crossing may not be modified without
modification to the permit.
6. Topsoil will be harvested, stockpiled and reapplied to the extent that it is encountered to assist with grass
stabilization and tree growth. Soil amendments may be applied to assist with grass establishment and tree
growth in some or all disturbed areas. The limits of application will be determined by the Engineer.
7. Trees will be removed pre -project with no or minimal ground disturbance and cut at base leaving root balls in
place. All pre -project tree clearing shall occur prior to April 1. No trees greater than 3" in diameter will be
removed during the project.
8. Same day stabilization shall occur for all activities on site. All bank repairs, stabilization, grading, or any other
disturbances within the 25-foot buffer zone shall be completed by the end of each day. Work shall be
scheduled so that at the end of each day bare ground is not exposed and all disturbed areas including banks
shall have an adequate temporary or permanent ground cover in place.
9. Contractor shall take measures necessary to ensure that storm flows do no damage work areas or create
sedimentation of aquatic habitat. Compliance must be maintained with the surface water quality turbidity
standard (10 NTU in streams, lakes, or reservoirs designated as trout waters); if turbidity exceeds these levels
due to natural background conditions, the existing turbidity level shall not be increased. If any exceedance
occurs at any time during the project, activity within the buffer must cease immediately. More protective
erosion and sedimentation control measures may be required in order to comply with this water quality
standard.
10. Waste soil is anticipated on the project and the designer shall be notified of removal of borrow or waste of soil
prior to commencement of such activities. Any off -site borrow and waste required for this project must come
from a Project with an approved erosion control plan, a Project regulated under the Mining Act of 1971, or a
landfill regulated by the Division of Solid Waste Management.
11. Existingtrash debris generated from demolition activities and/or denoted within the plans must be disposed
/ g / p p
of at a facility regulated by the NC Division of Solid Waste Management or per Division of Solid Waste
Management or Division of Water Resources Rules and Regulations.
12. No buffer/stream disturbing activity shall take place within the trout buffer zone during the trout spawning
period of October 15 - April 15, unless the North Carolina Wildlife Resource Commission determines that the
moratorium is not applicable to this project.
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 off Shulls Mill Road, upstream 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.
UT1 RESTORATION
1. Install pump around on the existing stream. Delineate the expected work
area and isolate it using coffer dams to ensure a majority of stream flow is
diverted around the work area. Pump any excess water that remains or
seeps into the work area onto a grassed strip or into a sediment bag before
returning it to the stream along a stable outlet downstream of the work
area.
2. Harvest coarse material and vegetation transplants from the existing
dewatered channel where possible.
3. Install in -stream structures (e.g. riffles, log and rock sills) and in -bank
bioengineering such as brush toe and sod mats after channel grading is
completed according to details and specifications.
4. While moving downstream with channel and structure construction,
re -position the stream pump -around system when a delineated work area is
completed and stabilized and a new one is started.
5. If applicable, backfill the existing channel from top to bottom pushing any
water remaining in the old channel downstream. Do not backfill beyond
where new stream channel has been constructed.
6. Implement native revegetation according to plans and contract documents.
SHULLS MILL DAM REMOVAL
1. The full vertical and horizontal limits of the dam, including all rebar and concrete shall
be removed with the exception noted on the plans. This exception is for the lower half
of the dam on the far river left where it serves as sediment containment for the
upstream terrace.
2. For instructions on sequencing and removal of Shulls Mill Dam, see Sheets 4.1- 4.4.
WATAUGA RIVER RESTORATION
1. The riverbed will be graded down an average of approximately 3' through the historic
impoundment area. The is the predicted pre -dam profile and base level of the river
channel.
2. The river channel will be narrowed to the design bankfull width and a bankfull bench
will be constructed approximately 3.5' above the average bed elevation.
3. All graded streambanks, benches and terrace slopes shall be matted with coir fiber
erosion control matting per detail. No non -biodegradable materials shall be used.
4. Seed and straw all bare areas on the site with temporary and permanent seed. Prepare
seedbed and apply seed and straw prior to placement of matting.
5. Implement native revegetation according to plans and contract documents. Livestakes
and container plantings will typically be installed during the next dormant season.
CONSTRUCTION PHASING
1. The Contractor should minimize work in the wet at all times. Access to the rive ill
be via the existing sand bar near the top of the restoration reach.
2. Install erosion control measures and trim tree limbs along access routes as
necessary prior to starting work.
3. Set up phase 1 diversion along existing river alignment by installing check dams to
prohibit low flow from entering the left side channel left of the mid -channel bars.
4. Follow phasing and sequencing provided on Sheets 4.1- 4.4 to harvest rock and
build the upstream left bank (Phase 1), shape the channel, remove the right portion
of the dam, and disposed of excess material in the rock harvesting area (Phase 2),
and complete dam removal, UT1 restoration, lower left bank work and other site
activities (Phase 3).
5. Complete demobilization as delineated below.
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 all 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
Proposed Structures
Erosion and Sediment Control Features
PROPOSED BOULDER BANK PROTECTION
STAGING AND STOCKPILE AREA
10+00
EXISTING PROPERTY LINE
- - - PROPOSED ALIGNMENT
- - - TB - - - - - TB - -
- EXISTING TOP OF BANK
PROPOSED MAJOR CONTOUR - 5'
PROPOSED BRUSH TOE
PROPOSED HAUL ROAD
EXISTING BOTTOM OF BANK
PROPOSED MINOR CONTOUR -1'
-
EXISTING ALIGNMENT
PROPOSED ROCK HARVESTING
PEN
PROPOSED CONSTRUCTION ENTRANCE
-------100-------
EXISTING MAJOR CONTOUR 5'
AND EXCESS FILL WASTE AREAS
OPROPOSED CASCADING RIFFLES AND POOLS
- - - - - - - - - - - - - -
- EXISTING MINOR CONTOUR 1'
CONTINGENCY ROCK
-SAF SAF SAF -
PROPOSED TEMPORARY SAFETY FENCE
HARVESTING AREA
FEMA FP FEMA FP
EXISTING FEMA FLOODPLAIN
- [X] [XI [XI -
SILT FENCE
- FEMA Fw - FEMAFw -
EXISTING FEMA FLOODWAY
,
EXISTING TREE
LOD-LOD
LIMITS OF DISTURBANCE
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SAVE EXISTING TREE
- T T T -
30' TROUT BUFFER
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TEMPORARY WOODMAT CROSSING
EXISTING LARGE BOULDERS OR BEDROCK
EXISTING UTILITY POLE
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STA. 2+9S START RIVER RESTORATION WITH LEFT BANK AND BED TRANSITION GRADING-
2860 ---- —__ /// Off'—_--
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STA. 3+10START APPLICATION OF NARROW BENCH RIFFLE TYPICAL (SEE SHT. 0.4)
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STA. 3+40 START APPLICATION OF MAIN RIFFLE TYPICAL (SEE SHT. 0.4)
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STA. 5+30+/- UTI TRIBUTARY CONFLUENCE
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STA. 6+20 START BED PROFILE TIE-IN TO EXISTING POOL
STA.6+62END RIVER RESTORATION CHANNEL GRADING
_ --- _--- --
`--_—'----__—_—_—_s—_--_---- —
STA.7+07END LEFT BANK GRADING
STA. 8+33 END RIGHT BANK GRADING (DEPENDENT ON ROCK HARVESTING ACTIVITIES)
—__ ____--=18 ------ _--'
-- --_--
REFER TO DETAILED SEQUENCING SHEETS 4.1-4.4FOR ADDITIONAL GUIDANCE
2870
2865
2860
2855
PLAN VIEW
PROPOSED BANKFULL
3+10 START PROPOSED
PROFILE WORK
EXISTING GROUND
(ALONG CENTERLINE)
—
—
—
—
EXISTING BEDROCK
AT INVERT OF POOL
EXISTING THALWEG
(SUPERIMPOSED)
PROPOSED GRADE, GRADE
POOLS AS DIRECTED
1+00
1+50
2+00
2+50
3+00
3+50
4+00
4+50
2870
2865
2860
2855
5+00
v
a
PROFILE
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STA. 2+95 START RIVER RESTORATION WITH LEFT BANK AND BED TRANSITION GRADING
' STA. 3+10 START APPLICATION OF NARROW BENCH RIFFLE TYPICAL (SEE SHT. 0.4)
STA. 3+40 START APPLICATION OF MAIN RIFFLE TYPICAL (SEE SHT. 0.4)
STA. 5+30+/- UTl TRIBUTARY CONFLUENCE
STA. 5+93 STOP FULL APPLICATION OF TYPICALS, GRADE PER PLAN CONTOURS (GRADING MODEL)
• STA. 6+20 START BED PROFILE TIE-IN TO EXISTING POOL
STA. 6+62 END RIVER RESTORATION CHANNEL GRADING
STA. 7+07 END LEFT BANK GRADING
STA. 8+33 END RIGHT BANK GRADING (DEPENDENT ON ROCK HARVESTING ACTIVITIES)
2870
2865
2860
2855
2850
2845
5+00
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\\� \\\\-_—l�\ll\ ` 1
-2860.
It FOR PHASING ' y y_ — / /// 'I\ \ \O \ � LOD LOD \
\� \ /
iOFRIVER ,v�� 6 — \� \ \�L_ �' /r �` `� 3WATAUGARIVER
ii' /i Cy� 2870X 2I////j i _ L €
(� \\\ �/, / DEMOANDDISPOSE OFMAN MADE
ER IALS;THESE MAY BE BURIED
AT DEPTH PER PLAN NOTES. /
SEE SHEET0.2. /TB00
_ 'v
-- /
PRIMARY ROCK -HARVEST AREA AND
SUBSEQUENT PLACEMENT AND
STABILIZATION OF EXCESS FILL MATERIALv\
ALTERNATE ROCK HARVEST AREA
(IF APPROVED BY DESIGNER)
'i__ —�J'/ / l �\l✓ 1 � �,_ ��\\11 \\\\\^ \ �\\ \\ 1 �g - �/ /=L I�T�,\I lrl, �`J // f / /.
PLAN VIEW
STA=6+20
ELEV = 2858.14
PROPOSED
BANKFULL
END LEFT BANK
GRADING
—
--
--
BASE FLOW
WATER SURFACE
—
III
I
PROPOSED GRADE
�
I
/
TIE INTO EXISTING POOL
INVERT ELEVATION
EXISTING GROUND
(ALONG CENTERLINE)
/
/
END RIVER
STA=6+
ELE=201'5
RESSTORATITION
/
EXISTING THALWEG
(SUPERIMPOSED)
/
--
\
I �
5+50
6+00
6+50
PROFILE
7+00
7+50
8+00
2870
2865
2860
2855
2850
2845
8+50
M r—
w Lo
M M
O
v
N
N
(ao I II I xs
J�s APPLY CASCADING
FRIFFLEDETAILTOALLOF
UTI, SEE SHEET 7.1
c go_
r / / //
PROPOSED END
UT1 RESTORATION 1+31
2860
2870-
vA / g60-
/(30
i l
i
J
- UT1 RESTORATION NOTES:
START GRADING AT STA. 0+53 USING THE UT-1 RIFFLE TYPICAL (SHT. 0.4) -TIE INTO EXISTING BEDROCK i
STOP GRADING AT CONFLUENCE WITH WATAUGA RIVER AT STA. 1+31 (WATAUGA RIVER STA. 5+29)
PLAN VIEW
2880
2875
2870
2865
2860
2855
0+00
EXISTING GROUND
(ALONG PROPOSED CENTERLINE)
\
\
PROPOSED
BAI
START
RESTORATION
STA.0+52
UT1
\
\
/
PROPOSED GRADE
\
END UTI RESTORATION
AT CONFLUENCE WITH
PROPOSED WATAUGA RIVER
STA. 1+31
0+50
PROFILE
1+00
2880
2875
2870
JKFULL
2865
2860
2855
1+50
w
c)
w M
. O
v
m
m
N
-- J
\\\III (�, 1 \11� rG•�ii % ��/iiiiiii//� - iJ: ��.. ,l \ \\ \ \ l \ \ Z - \--
` PUS
FO
/ L^ PROPOSED START
1\—//rJ /r --/'// l Jl l PROPOSED START
STA.
0+52
\l -----
ill
�
2870-
PROPOSED END
�fl& ) 2 UT1 RESTORATION 2a V \
STA. 1+31' \ fl
/_
6+00
/ �—���� 1V�_��.I a �/�\AIVAIIj•.�.�_—= v --0�"` / �, �I1j�i��/' /' i �<b � A �5� __ —
/
2865
If/
0_ < RIVER 7` �� � ��—��—_—_--���
0
\\
J' \ 2++oo_ L
----- —— O / — r �9 / _1 /r Ji- vVAAI VA
\ _ _
,:e' _
STARTPROPOSED
3+ 00
-4� -3U U 1-') 3Ucrs
2875
287C
2865
286C
2855
2850,75 -60 -45 -30 15 0 15 30 45
4+00
\
' 0' 30' 60' l
(HORI; NTAL)
'p,
=`' U\ IJ Jlll/l111/IJSl) r
-2870Illll/(1fl/l arm ti
w,
I
�iAVo�'�
STA.6+62RRESTORATION
\ IIIII
\� U\
LEGEND
-bU -4::) -.iU -1.) U 1-1) SU 4-1) bU
EXISTING GROUND
PROPOSED GRADE
M
r
w M
M M
0
d-j
lb
--�
(75
r�
4+50
-`JU -/�) -bU -45 -SU -15 U 1.7 SU 4.7
O
u
v
Ln
bA
��ri t i � �`i � i•/i ,�' '___—� �.— � - / \�" i � \ i"'ice iL ��• � ii.,-(
PROPOSED START
UTIRESTORATION
STA.0+52
kz
--- �— J /�s l� 9rLL`�'sk•., �1/ \
o� all
PROPOSED END
UTI RESTORATION
STA. 1+31 /
/ /// / / It. i i/n(//mil l\iL\1 //f----/((\/s\��•- \�1"tl�l//�\——;i'—
is'000..
00 .
—�,- I— � )
'e l /
/
ri Z865 � �
'92e%
.E
—2865—
l�
— _ _
O � r
_
J\}I/\\�\_r 860� —�
5+00
-START PROPOSED
5+50
-/S -bU -45 -3U -15 U lb 3U 4S bU
C
O ��� v vAA�V'"P+vV v
AV I IllAI11\V�l�lt�j\lA�\
/ — }II
A2.
p \\
f IEND RIVER RESTORATION
v STA. 6+62
v�O�
860
--30'
\\WMZONTAL) ,.
\tP 1 Z
\ ~ o
1
\=
t � 0
VA AVAVA63I�VFR
i r
/
J � /
�L
> t
1
c �
., l r i �'�\•-._� COY—J^/,..;5! �
\
LEGEND
EXISTING GROUND
PROPOSED GRADE
6+00
-9U -/S -bU -45 -3U -15 U 15 3U 45 bU /S 9U
. / i vLI#—
�i
N
cs
r>\-
-�
—2875 — —
/ PROPOSED START pq,
-- — — _UTIRESTORATION
STA.0+52
t —
\
V_� 0--
�iWATAUGARIVER
//#o/ _ 1 , \ \ \ \ \ ` — 2g6S- — — — J-1
2 67
288s
288C
2875
287c
2865
286C
2855
285C
RIVER RES
- J STA.2+95
v� ti
V_� 0--
�iWATAUGARIVER
//#o/ _ 1 , \ \ \ \ \ ` — 2g6S- — — — J-1
2 67
288s
288C
2875
287c
2865
286C
2855
285C
RIVER RES
- J STA.2+95
v� ti
/
/
V /
I
284 -105 -90 -75 -60 -45 -30 -15 0 15 30 45 60 75 90 105 120 135
-
,�
7+00
28s
288C
2875
287C
2865
286C
2855
285'
2845-135-120 105 -90 -75 -60 -45 -30 -15 0 15 30 45 60 75 90 105 120 135 150 165 180 195
\
I
II
II
II
�I
I
I
I
JJ
z?�o
f tz
-.--�-- l7
�aw
f1 j
� C4 tip
��ptillorl I
pAI 4,
LEGEND
EXISTING GROUND
— PROPOSED GRADE
a
O
v
v
Ln
bA
s�
11
m
o°ao�
0+55
-iU -lb U 1S iU
- A
PROPOSED START
UT1 RESTORATION
STA.0+52
/
�zl
1L
t t /
\ 1 I \ t
2865
START PROPOSED—
_ RIVER RESTORATION— __ ,--- l\ —
— ` — — STA.2+95
;3) DOGWOOD ROAD,"
0+65
-iU -lb U 1S iU
0+75
-iU -1S U 1S iU
0+90
-3U -lb U 1S iU
1+00
0' 30' 60' 90'
(HORIZONTAL)
LEGEND
EXISTING GROUND
PROPOSED GRADE
1+ 22
-3U -lb U 1S iU
Z y o
�W oU�Fi.
alW �z�a
I-yZ �QE"a
w
W `0
M M
0
E
s
2875
2870
2865
2860
2855
2850
OpO%
' _ "f!J
AW 5
Jo
- - - - y
d
- _ ;/' o i / I I ROCK BERM COFFER DAM,
- - - ROCK BERM PHASE 1 / a MIN ELEV - 2064.0
w -
/" - I WOOD MAT CROSSING, , (BASE FLOW 2061.8)
�� XSSTA. 4+00 20' MIN SPAN, LOW � _
DURING LATER PART OF PHASE, RELOCATE / \ - ,�y CHORD 2064.0 ,
ROCK TO BANK OF RESTORED RIVER 2870
CHANNEL (AS SHOWN) - SEE DETAILED / /6 / ��/r I �'15�- , v 0-(
DIVERSION SEQUENCE TEXT.�S O ' �ti
r
7
7
m LL m
`OCLIr y
10
PLACE MATERIAL HERE TO FORM PROPOSED
i
BANKFULL BENCH GEOMETRY, SEE
PLAN -PROFILE AND SECTION GRADING SHEETS 2865
r
r - BACK CHANNEL,
2865 -I UP GRADIENT OF pfl� 0 REMOVE LARGE
PROPOSED
PR �POS/ED BANKFULL
ULX BOULDER
\�`-`2+00 RESTORATION L EXISTINGBAR
301
10,
OPTION TO REMC
�860- - -_7-'.�� LEAVE LARGER BOL
01
/ pd
--2865--
AT ONSET OF WORK, FLOW TO REMAIN IN m-� re PROPOSED
_ EXISTING CHANNEL WITH ROCK CHECK CHANNEL PROPOSED -
DAMS (CD) SETUP TO RESTRICT FLOW - - _ TOE (TYP) BANKFULL
_ - ACCESS TO BACK CHANNEL ON FAR LEFT -
WATER SURFACE
UPSTREAM OF DAM - 2061.6
L SURVEYED EXISTING GROUND -Y I I 1 11 1
WATER SURFACE
DOWNSTREAM OF DAM - 2058.E
2875
2870
2865
2860
2855
2850
2845 T 1 1 1 1 1 1 1 1 1 1 1 1 1+ 2845
0+00 0+50 1+00 1+38
DIVERSION PROFILE AT STA. 6+05
PHASE 1
ta- START PHASE 1DIVERSION FLOW (EXISTING
ALIGNMENT) WITH PROFILE BELOW, USE
ROCK BERM ON RIGHT SIDE OF DIVERSION
CHANNEL TO SERVE AS COFFER DAM FOR
ROCK HARVESTING AREA
XS STA. 6+05,
SEE SHT. 4.4 FOR
=
PHASE INFORMATION-
�vU �
I
/
MARK TREES TO BE CLEARED IN FIELD _
TO ALLOW FOR FILL PLACEMENT
PLAN VIEW - PHASE 1 Phase 1:
- -J
f
END RIVER RESTORATION
(SEE PLAN -PROFILE SHEETS, -- _
MINIMAL WORK IN POOL "-
DOWNSTREAM OF DAM)
vv -
— � 00
to
SECONDARY ROCK HARVESTING AREA
J/00
I
PRIMARY ROCK HARVESTING AREA -
O
0
Establish construction entrance and preliminary ESC.
0' 30' 60' 90,
(HORIZONTAL)
Access river from upstream point. Travel along existing gravel bars and establish temporary crossing to rocky bar and rock
harvesting area.
Harvest rock material to an average depth of 3 feet within the designated area (to the right and immediately upstream and
downstream of the dam).
Haul rock to upstream river restoration reach and establish a linear rock berm along the approximate proposed top of bank
(preliminary configuration shown in plan view), approximate STA 3+40 to 4+10.
Working from the land side of rock berm, excavate the near bank down to 2-3' below proposed channel toe. Push rock into
excavation to form and shape new riverbank at the proposed grading elevations. At a minimum, the lower half of the bank
HAUL ROAD ON
EXISTING GRAVEL BAR
shall be rocky. The remainder of the bank will ultimately be matted, including the bankfull bench and terrace slope. Apply
INITIAL ROCK BERM EXISTING GROUND
matting once construction use for Phase 1 access is complete. (This effort should avoid disturbing base flow of river until
near -final configuration of bank is complete - this should be possible using the existing mid -channel gravel bar as a barrier to
2875 2875
river flowing into the back channel).
2870 2870
2865 2865
I
Approximately 1/3 - 1/2 CY of harvested rock will be imported into the reach per linear foot of river channel to build the
2860 I z86o
proposed boulder bank.
2855 2855
0+00 1+00 1+10
Between station 2+95 and 4+00, the sediment to be removed from the channel will nearly balance with the bank and bench
PROPOSED GRADE
J!7
construction. Approximately 260 CY will be removed from the channel and approximately 170 CY will be required to
BACK CHANNEL- EXCAVATES' BELOW PROPOSED
construct the banks and bench up to proposed grade. The 30-50 CY Of rock from the harvesting area will result in a net
USE FOR WASTE GRADE AND MOVE ROCK FROM INITIAL
surplus of approximately 130 CY. This material should be staged on the bankfull bench for use during Phase 3 backfill of the
FILL AS NEEDED ROCK BERM TO STABILIZE PROPOSED
LEFT TOE AND BANK
left side of the back channel.
Alternatively, two optional proposed waste areas are available in the laydown area and just downstream of the top of UT1,
both alongside Old Shulls Mill Road. Collectively, they can take approx. 420 CY of material. Material may also be relocated to
PHAROCK BERM PROFILE SEATSTA.4+0o
the rock harvesting area to displace the removed rock volume.
s
XS STA. 6+05el
i
_r -�-���_�_ �_�-� �� �/ice /� � �•�7�\ ���'_ ��� t
----------------
EXTEND ROCK BERM COFFER
DAM, MIN ELEV = 2064.0
(BASE FLOW 2061.8)
XS STA. 4+002970
i
t WOOD MAT CROSSING, 0�\ ZU\\ Il/Ili/1/rfll/ll\1
20' MIN SPAN, LOW
CHORD 2064.0-���AA\�Ij��j�\\AAA\�AA1A
�F
'
I � �
I
p� END PHASE 2 DIVERSION
2+88
" THROUGH DAM END RIVER RESTORATION
SEE SHT. 4.4 FOR
I PHASE INFORMATION
- - L0�
)1� }1
REMO�ECHECKDAMANDy� " r� j e-�+�0--,
ALLOW FLOW THROUGH /- - v ��- _t_1-
.�� (E�ISTING)BACK CHANNEL, SEE---
�V'` DIVERSION PROFILE BELOWI-
/
-
1�
2P THIS AR EA DRY DURING /
PHASE 2 EXCEPT FOR
- '- -2870j-- - SEEPAGE
_ _ 1 UP GRADIENT OF 2 pfl 00
2865
- - - 8 �� /
J-I-- � 28
5
START RIVER
- - PROPOSED BANKFULL
`2+06 RESTORATION
_ COI
y�
�-- OPTION TO REMOVE OR
�860- --- _ LEAVELARGERBOULDERS
-
�� -
00 - BASED ON NEED -
2865-� e---- ie
-'a PROPOSED e
INSTALL
ACROSS CHANNEL "
CHANNEL PROPOSED LL ROCK BERM COFFER
TOE (TYP) BANKFULL
2875
2870
2865
2860
2855
2850
2845
0+00
- WATER SURFACE -
UPSTREAM OF DAM -
2061.6-2062.5
PLAN VIEW - PHASE 2
2875
2870
2865
2860
2855
DAM
—
I
\
EXISTING GROUND WATER SURFACE
DOWNSTREAM OF DAM - 2058.5
0+50 1+00 1+50 2+00
DIVERSION PROFILE - PHASE 2
2+50
2850
-+ 2845
2+88
?J+00,
REMOVE DAM TO
_1 HERE DURING PHASE 2 \
LOD LO� D O
��—�--
I AVAA �� I I11 I
/€
\ \ �-2860�
— o (SEE PLAN PROFILE SHEETS,
-- _-,
MINIMAL WORK IN POOL
- - -
DOWNSTREAM OF DAM)
- -
'
— LOD
/
PHASE 2 INCLUDES REMOVAL OF RIGHT HALF
-
OF DAM, COMPLETION OF REMAINING ROCK
o
HARVESTING, AND USE OF HARVESTING AREA
TO DISPOSE OF EXCESS FILL AND CAP WITH
RIVER STONE AND/OR MATTING
�S
-
0' 30' 60' 90,
(HORIZONTAL)
W
Phase 2:
Reconfigure the diversion of base flow from the existing right side of the river (Phase 1) to the left side of the lower bar
(Phase 2). To accomplish this, use the existing cut through between the bars. At the downstream limits of the lower bar
reconfigure the rock berms used to coffer dam off the rock harvesting area and extend to create a rock berm that
separates the flow from the entire right low flow channel.
Grade the river channel down to proposed grade and relocate excess material to the rock harvesting area to construct the
embankment grading shown on the plans. During this phase, also remove the right half of the dam and start grading the
left terrace and removing the upper portion of the dam river left. Use a temporary wood mat crossing over the low flow
diversion alignment to bring soil material to the rock harvesting area to mix with sand and gravel from the channel
excavation. Stage sufficient rock and gravel along the rock berm to backfill the landward side of the berm where the
proposed river left bankfull bench is to be located.
Close out activities on the right side of the river in the rock harvesting and sediment waste area. Cap sand and small gravel
with larger on -site rock. Mat the proposed embankment slope which is proposed at a 3:1 slope. On river left, stabilize bare
areas at the end of each working day; dispose of waste concrete a minimum of 2-3' below proposed grade and a minimum
of 15' from the proposed base flow channel.
The net quantity of cut material in the rock harvesting area is approximately 550 CY, mostly from the rocky bar area where
the river channel is to be relocated during final grading. The net quantity of fill in the rock harvesting area is approximately
950 CY. Fill material is tucked against the hillslope and well protected from river flow. Fill material placed in this area
should be placed from downstream to upstream.
In the event of an anticipated large flow, the rock berm should be elevated by 1-2' as directed to prevent overtopping.
I
OPTIONAL FILL AREA,
155 CY
EXCAVATE TRENCH AND PLACE
WOODY BRUSH TOE MATERIAL
BELOW RIFFLE GRADE. CONSTRUCT
BANK WITH ROCKY MATERIAL SAME
AS OTHER LOCATIONS.
/ f C
i� OPTIONAL FILL AREA,
%iir 270 CY
_-
v
t XS STA. 4+00 � t
a 2 7p
CONSTRUCT UT1 - -
O
AND TIE-IN _
STAGE MATERIAL DURING PHASE 1
OR 2 TO PLACE INTO LEFT BACK O�
i
rre
J /
CHANNEL (PHASE 2 DIVERSION AREA) `�- "/ �`�' o
AND BRING UP TO GRADE
87 .� oo ti���
2860
ay5
i
---
_2 _
--�
_ -- - BACK CHANNEL, 2g60
-2865
/_
P P GRADIENT OF
�\ START RIVER _ R FULL - - -
_
2+oG RESTORATION
i
_
01
(101
-
2865
_
PROPOSED
AT BEGINNING OF PHASE 3, -
CHANNEL PROPOSED
REMOVE ROCK BERM FROM
PHASE 2 AND DIVERT BASE
TOE (TYP) gANKFULL
FLOW INTO NEW CHANNEL
2875
2870
2865
PROPOSED GROUND,
POST-PROJET WATER
SURFACE TO FOLLOW 2860
2855
2850
0+00
WATER SURFACE
UPSTREAM OF DAM
(PRE -REMOVAL),
2061.6-2062.0'
I
-
-
I
I
EXISTING GROUND
0+50
2875
2870
2865
c<y
XS STA. 6+05,
THIS SIDE OF CHANNEL IS DRY DURING PHASE 3
SEE SHT. 4.4 FOR
ROCK PAD NEED TO BE BUILT UP ABOVE LEVEL OF
PHASE INFORMATION
DOWNSTREAM POOL AS WORKING PLATFORM
REMOVE PROUD PORTION OF ABUTMENT DOWN TO
GRADE GRADING MODEL ELEVATIONS
\OR\
`ADJACENT
71 III�IIIVA\')
i
.
REMOVE REMAINDER OF DAM; UTILIZE
/
/ O CO M P RESSO R AS N ECESSARY TO R E M OVE
FOUNDATION OF DAM TO BEDROCK
ABOUT6-10'BELOWWATER SURFACE
END RIVER RESTORATION -- --
���
(SEE PLAN -PROFILE SHEETS,
- -
MINIMAL WORK IN POOL -
7 6+00 --�� � / / I 1 DOWNSTREAM OF DAM)
/, �/r
1
PHASE 3 DIVERSION _OD
,�. START PHASE 3*e_, - / COMPLETE ALL DAM REMOVAL RIGHT
DIVERSION ALONG p II OF THE PHASE 2 ROCK BERM AND FILL
NEAR -FINAL ACTIVITIES IN ROCK HARVESTING AREA
RESTORED CHANNEL 1 V PRIOR TO STARTING PHASE 3
4
OPTION TO REMOVE OR LEAVE LARGER BOULDERS
-
BASED ON NEED
ROUTE UT1 THROUGH GAP IN ROCK
BERM. DURING CONSTRUCTION UTILIZE
PUMP AROUND TO PUMP BASE FLOW
INTO MAIN CHANNEL DIVERSION
PLAN VIEW - PHASE 3
2860 DOWNSTREAM BASE
FLOW WATER SURFACE
2855
2850
1+00 1+24
DIVERSION PROFILE - PHASE 3
Phacp :t-
� O
p� o
` O
2860� o
0' 30' 60' 90,
Q
Z N o
(HORIZONTAL)
U d w
W
0'j
Z x�N
Al0 �v
I-yZ
After grading to final elevations on right hand 2/3 of the channel and right bank and floodplain, remove the phase 2
rock berm from across the channel and divert flow into the new channel.
Commence with finalizing left an woody structures, rocky an grading and banll bench construction in areas
that have not been finalized. Material stockpiled on the bench during Phase 1 will be used to backfill the left channel
up to proposed bench grade in the portion used for phase 2 base flow diversion. Rocky material will be mixed with
gravel and sand to form a bed material mixture for UT1 channel reconstruction according to the cascading riffle detail
on Sheet 7.1. For UT1, bed material shall be placed between grade control structures placed according to detail.
Below station 5+00, reconfigure the rock berm material to form the new left channel bank and grade to the left bank
to the specified grade and slope. The proposed left bank benching tapers off around 6+00 and below that point the
left bank is sloped at 3:1 to tie in on the existing terrace at 7+07. Excess material from the terrace may be placed in
either of the two left bank optional fill areas. Any remaining excess material should be hauled offsite.
Re -naturalize haul roads and haul any excess soil offsite. Loosen material to depth of excavator bucket to
mechanically fluff. Seed and straw.
C'�
OPTIONAL WASTE AREA, _ =1\ \c - s r 0
CONSTRUCTION ENTRANCE -ar - --� R-�- - 9T) _ �• y - IF USED, SAME DAY _ _
AND STRAW
� i;~/ � - - _ _ __ _ -_- - STABILIZE WITH SEED --_ __--
�--'' �J � / l I � .✓ � ,�' �� -_-_-ice% - -- � - --- --_ - __ ��-- - 'Zz
r
d) .d
STAGING AREA DAM REMNANTS Q•
SORTING (METAL AND CONCRETE) / ^\` ( ` a•s - i� ^ =-0 ,�\ �: \
i -
-OPTIONAL WASTE AREAS, IF USED, SAME
DAY STABILIZE WITH SEED AND STRAW,
- - PUMP AROUND UTl MAT ANY SLOPES STEEPER THAN 4:1 1a T - / i ;� - A
- I /-V AI I I I( \
DURING CHANNEL T T 1 I \
WORK / // p I 1 l v A �� i•;ON
- - - - 1�
0P0 - • v�J I s� *� it l�� / "� - _///� �� II\ 1V� \ �I I i ���OP �....„.,,�J
L
S\A
ULL cl)m
i _ r• T T VA\ �. I _ r/ V I �� w e z
J �• PROPOSED START
'� > ''�� 4•` i �•� UTIRESTORATIONi�/���.� A • /%//'� �� �� /--�'� \\ \ ���/�/=-I� ) - y�b��dd o ¢�O�
ns
STA. 0+52 ♦ p
_ v \ y l i �� ,+ • _ }� // / 'la .iv c -- IIN/� v END PROPOSED
D END
1 ♦♦ ♦��p •
RIVER RESTORATION
PROPOSED
�
l 4s¢ $ per• - UTl RESTOR/ • \ \\ /
_ -"���' ��� �A � @• O � � l� (�@ �=" �� \ vA A III � /� i
T A ( Ji 2�
Il/ � �- • � � _
/// ��- @ vw F / �7+00,��
_ _ a
1 ��// ��� �� �� �• O ���� �� ��� VAV lav /� i� �— i� — --�\\ \ I)AA 7i--�
caw)
/• jC j j(ds�• ��/ — j � �1 ` — _- — \ \� /— 855_' 1 � �
lll/ �`�--1�- � �� �/ / ��' �� @• ice'/1 ���� ,�� - �� I 1 I / �i v /---
I �,-_-- -- � �_ INSTALL SILT FENCE/ WATTLES - -- -,
\V _ r WHEN HAUL ROAD IS NOT IN USE - i n \ / / !
V Iry • -- - �
`--� �n �• �/ice ,- _ � / � � �� � � / ��6 � -__ ��6 � � .,_, ,�
o
- - -
U
�kLOD
-- - ---- /i - --
i
vAPPLY MATTINGTOATLEAST o
_--- �� �; � --_ �-k---_ a ���' � — � r � � /i'/ i � / — __�_� ( � � 2865' CONTOUR, AND TO ALL
z
� SLOPES STEEPER THAN �✓
APPLY MATTING TO ALL BANK,
--''� BENCH AND TERRACE SLOPE
2860
WORK ON LEFT SIDE OF RIVER -� i — / i,; /V v� A J /v• I --I
r
U
i
TOUCH UP SLOPE AFTER ACCESS
864
2+ 00 AS NEEDED, TOP DRESS WITH % 2
- o -
v k� TEMPORARY SEED AND STRAW +p0 ��I` /��VAVAVAAI IAA\\
_ --
60— _---' r///, REFER TO SHEETS 4.1-4.4 FOR
PHASING AND SEQUENCING OF
/ � � -��%' � �' /- �� WORK, INCLUDING CROSSINGS AND��� Ali V A v 28 /
-- 860"- _ - ;' - �� ����/ /' ��� RIVER BASE FLOW DIVERSION
-0-
WHERE �
i
�-OOY •a' � � v
--_ e --__ ---- - - - -� '_ - -' ati-_v
ROCK IS NOT PRESENT, APPLY � j _ � j% ' \ �_ ? �\�
START PROPOSED - MATTING AND SURFACE APPLY
a_
- - _ - - -
IVERRESTORATION BOULDERS_LIMITS OF DISTURBANCE \ /
_-
COARSE STONE AND _
-
-�! _ T
—
_
—
'TROUT BUFFER
DOGWOOD ROAD ~� > � ��, _ `—\ `�
"-L � 007
--
---
--
�
�k,
z NOTES:
1. ALL BANK RESTORATION AND RIVER WORK SHALL USE SAME DAY STABILIZATION WITH COIR MATTING
3
0' 20' 40' 60'
2. ROCKY AND GRAVELLY MATERIAL FROM CHANNEL DOES NOT REQUIRE STABILIZATION UNLESS IT IS ANTICIPATED TO BE SUBJECT TO HEAVY
FLOW FROM STORM EVENTS (HORIZONTAL)
g 3. WORK IN THE WET SHALL ONLY BE FOR LIMITED PHASES AS DESCRIBED IN PHASING AND SEQUENCING. THE MAJORITY OF THE WORK WILL BE
PERFORMED IN THE DRY WITH DIVERSIONS SET UP TO ROUTE RIVER BASE FLOW AROUND THE ACTIVE WORK AREA. g T
4. IF DEWATERING IS NECESSARY FROM ACTIVE WORK AREA TO PUMP GROUNDWATER, ROUTE FLOW THROUGH A FILTER BAG ACCORDING TO
x PUMP AROUND DETAIL.
3 a c b vx
01 POOL
ROCK DROPS, SEE DETAIL, VARY INCORPORATE WOOD WHERE AVAILABLE (TYP) ' A' FLOW ELEVATION POINT
N CONFIGURATIONS AS SHOWN 0 e VARIES BY STEP
CASCADING MICROPOOL(TYP)- INCORPORATE O O i O ARRANGEMENT 0
RIFFLE, SEE DETAIL INTO CASCADING RIFFLES k SEE PROFILE FOR
ELEVATION Q 0
O A z •g��o
E
e BACKFILL EQUAL RIFFLANGLED DRO IRREGULAR DRO
0 MIX FROM PROJECT ARCHED DRO Arched 0
a i F z
RIFFLE TABLE Q as V
aZ
POOL `� W
LENGTH Z BOTTOM WIDTH (TYPICAL SECTIONS)
(VARIES) ANCHOR BOULDERS 2' INTO Angled
POOL SPACING (PS) °y° 2-4" BANK (HEADERS AND
FOOTERS), BOTH SIDES
PS -A PS-B PS-C PS-D
4 CASCADE -POOL THALWEG ON UPSTREAM 1/3 OF
SEQUENCES %� ANGLED STEP (SIMILAR TO SINGLE �annnq
ARM VANE). e.g. SEE LOG STEP
_ NONWOVEN i ��\� i �\\\ BACKFILL DETAIL SECTIONA-A' 0����J'"'„'Nyb���4
FILTER FABRIC \��!!\\ �\ \\i� DEPTH 18" $� o`er m
- BOULDER eQLAI,
MINIMUM
HEADER BOULDER BY 3' LENGTHM g m
MATCH PROPOSED MIDDLE OF ROCK STEP 2-4" FOOTER BOULDER ular , o O,
GRADE (BANKFULL- _ BASE FLOW
LOWER THAN BANKS OF ROCK STEP Section A -A' \� [ ���•�`
Dmax) TO WITHIN -0.2 \\ -
TO +0.1' AT HEAD OF \DROPS OF UP TO 0.5' MAY BE
EACH CASCADE USED AT POOL ENTRANCES t jPOOL
!!\ DOUBLE THAL G OR
VARIABLE THALWEG
Cascade /Step -Pool Spacing Table
SEE DE I AiL 3/6.1 FOR CASCADE CONSTRUCT iON PLACEMENT
BETWEEN ROCK DROPS
FOOTER OR CLASS ZNONWOVENI
Species Name
POOL SPACING (PS)
PS -A
PS-B
PS-C
PS-D
SEQUENCE
POOL
CASCADE
RANGE
LENGTH
A+B+C+D
LENGTH
SLOPE
RANGE
1/2 SPLASH ROCK FILTER FABRIC Types of Step
Configurations
UT1
9-18'
TBD
TBD
TBD
TBD
TBD
3-5'
10-16%
NOTES:
• CONTRACTOR MAY VARY POOL SPACING BUT SHALL COMPLETE SEQUENCES TOTALING TO SEQUENCE LENGTH PROVIDED IN TABLE
UT1 - Cascading Riffle -Pool Sequence
7.1 Not to Scale
1 V111�
View
r2--, UT1 - Rock Drop
7 1 Not to Scale
NOTES:
• DROP TYPE MAY BE VARIED IN THE FIELD BY DESIGNER. IN GENERAL,
VARY DROP TYPE OFTEN WITH ROUGHLY EQUAL NUMBERS OF EACH
DROP TYPE WITHIN A REACH.
• DETAIL TO BE APPLIED IN CONJUNCTION WITH CASCADING
RIFFLE -POOL SEQUENCE DETAIL.
• SECTION VIEWS REPRESENT ARCHED ROCK DROP VARIATION.
MODIFY SECTIONS AS NEEDED TO ACCOMMODATE OTHER
VARIATIONS.
• BOULDER MINIMUM SIZE 2x2x1'
'~' C13
r- •--+
U
O a'�+
i)
z
6" MIN. OVERLAB IN
DIMENSIONS MAY VARY
BY MANUFACTURER BUT
DOWNSTREAM DIRECTION
Q
AT MAP ENDS
SHALL BE SUBJECT TO
DE SIGNER APPROVAL. SHALL
WOODEN
OF
�4�
^(CS
STAKE (TYP) TOP
BANK
RESIST BREAKAGE PER SPEC.
I--1 0
U
1.25'
3' MAX.
%� \
SPACING
0.4' \
t/J
oo
TOE STAKE
TOE OF SLOPE
ti
Plan
View
1 L4
N
0.6"
COIR EROSION CONTROL
TOP OF BANK
COIR MATTING
MATTING (TYP)
SECURE MATTING IN
Toe Stake Wooden Stake
6" DEEP TRENCH OR TOE STAKE
WOODEN STAKE TYP
SEE SPECIAL SEEDING NOTE
NOTES:
/INSTALLATION
ANCHOR COIR WITH LARGE ROCK \ /\\ \\�
�CCHANNELBED
TOE OF SLOPEAND/OR
\
TOE STAKES PER
USE 700g/mZ DENSITY COIR MATTING.
/\/\/
/1.
/ T '
MATTING DETAIL \ \
��
��
2.
SEED AND MULCH SLOPES PRIOR TO MATTING INSTALLATION.
HARVESTED ONSITE BOULDERS < �AA�VA/VA���
i���i i i �� i
3.
TOE STAKES TO BE USED AT TOP AND TOE. 12" WOODEN TAKES
u SIZE RANGE 1x1x1.5 TO 4x3x2 OR /�/
Section
MAY BE USED ON SLOPE FACES.
AS APPROVED BY DESIGNER
KEY IN BELOW
SECUa MATTING IN
View
MAINTENANCE
NOTES:
A CHANNEL BED
2.5' MIN.
6" DEEP TRENCHROR OE TAKE
1.
ALL EROSION CONTROL MATTING SHOULD BE INSPECTED AT LEAST
z
Section A -A'
ONCE WEEKLY OR AFTER 0.25" OF PRECIPITATION WITHIN 24
2.
HOURS.
ANY MATTING FAILURES SHOULD BE REPAIRED WITHIN 24 HOURS.
o c ..
s
3.
TENTING (EROSION OCCURRING UNDERNEATH INSTALLED
e
MATTING) WILL REQUIRE PEELING BACK MATTING, REPAIRING ANY
A
RILLS, AND REAPPLYING THE MATTING.
`\
g
v
r3--� Boulder Bank Protection
r Erosion Control Matting
m
x\Z-_V Not to Scale
7.1 Not to Scale
PUBLIC ROAD
CLASS A STONE
OR EQUAL,
8" DEPTH
INSTALLATION NOTES:
1. PROVIDE TURNING RADIUS SUFFICIENTTO 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 ACONDITION 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.
MATERIAL SPECIFICATIONS
PHYSICAL PROPERTY
TESTS
REQUIREMENTS
MATERIAL
N/A
POLYETHYLENE
RECOMENDED COLOR
N/A
"INTERNATIONAL ORANGE"
TENSILE YIELD
ASTM D638
AVE. 2000 LBS. PER 4' WIDE
ULTIMATE TENSILE STRENGTH
ASTM D638
AVE. 2900 LBS. PER 4' WIDE
ELONGATION AT BREAK (%)
ASTM D638
GREATER THAN 1000%
CHEMICAL RESISTANCE
N/A
INERT TO MOST CHEMICALS AND ACIDS
6' MAX. WITH WIRE
ATTACH SAFETY FENCE
TO METAL POSTS USING
METAL WIRE TIES
ORANGE SAFTY
FENCE
"T" OR "U" POST DRIVEN
MINIMUM OF 18" INTO GROUND
❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑
❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ Z
a
II II
II II
u u
I
Z
i1 Construction Entrance —sAF—
z Safe Fence
oo
7-2 Not to Scale V �•2 Not to Scale
ONIMee■
_...
■iii■
DENSELY PACK BRUSH, WOODY DEBRIS AND SOIL EROSION CONTROL MATTING
IN BETWEEN BASE LOGS
O�gPN l�Pl BASE LOGS PERPENDICULAR TO FLOW
f BASE LOGS PARALLEL TO FLOW
,SOP QQ�I,�yPI
OF 5v
oil
�O
Plan
View
BRUSH MATERIAL TO BE
INSTALLED PROTRUDING
6-18"
n Brush Toe
7.2 Not to Scale
ELEV. V ABOVE
DOWNSTREAM
RIFFLE INVERT
BASE LOG
4"-6" DIAMETER
JL�
ELEV. 6" BELOW 12' MIN
POOL DEPTH
WIDTH PER TYPICAL SECTIONS
)SION CONTROL MATTING
TIE TO BANKFULL ELEVATION WITH LIGHTLY COMPACTED SOIL
WRAPPED IN EROSION CONTROL MATTING
-V DENSELY COMPACTED SOIL LIFT ON BRUSH WRAPPED IN
EROSION CONTROL MATTING
TO OF BANK
-FILTER FABRIC
/DENSELY PACKED BRUSH, WOODY DEBRIS AND����%C
0
< BACKFILL 6-12" DIAMETER
NATIVE SOIL
Section
A -A'
LL)
r
v
Q
NOTES:
• LARGE STREAMS INCLUDE ALL OAK HILL DAIRY AND UT1 REACHES
• OVEREXCAVATE 3' OUTSIDE OF TOP OF BANK (BANKFULL).
• INSTALL BASE LOGS PARALLEL TO FLOW AT TOE OF SLOPE. DIAMETER 6"-12".
• INSTALL BASE LOGS PERPENDICULAR TO FLOW AT INTERVALS ALONG BANK, RESTING ON TOP OF PARALLEL
BASE LOGS. BASE LOGS SHALL BE 6"-12" DIAMETER.
N
o
N
• INSTALL A DENSE LAYER OF BRUSH/WOODY DEBRIS, WHICH SHALL CONSIST OF SMALL BRANCHES AND
e
ROOTS COLLECTED ON -SITE AND SOIL TO FILL ANY VOID SPACE. LIGHTLY COMPACT BRUSH/WOODY DEBRIS
LAYER.
L\
• BRUSH SHOULD BE ALIGNED SO STEMS ARE ROUGHLY PARALLEL AND IS INSTALLED POINTING SLIGHTLY
UPSTREAM.
• INSTALL FILTER FABRIC OVER BRUSH/WOODY DEBRIS.
• INSTALL EARTH BACKFILL OVER BRUSH/WOODY LAYER ACCORDING TO TYPICAL SECTION DIMENSIONS.
a
z s
• SEED, MULCH AND INSTALL EROSION CONTROL MATTING AND BANK STABILIZATION PER PLANS.
3
s
w
Z
F�2
Z a
010
u
LQ
2�
SUPPLEMENT WITH
SOIL FROM ON- OR
-SITE AS NECESSARY
2x CONTAINER WIDTH
/—T'� Containerized Planting
7.3 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.
S QPC\NG
FpR
Q\yN�\NGBAN
KFU LL TOP OF BANK
LIVESTAKE 14 OFF
EROSION CONTROL MATTING
BASE FLOW EDGE OF
(SEE DETAIL)
WATER AS DIRECTED
LIVE STAKE
FFER PLANTING
HERBACEOUS PLUG (TYP)
SEE PLANTING TABLES FOR SPACING
TOE OFSLOPE
LIVE STAKE TYP
Section View -
Large Streams
1/2" TO 2" 2' TO 3' LIVE STAKE
DIAMETER TAPERED AT BOTTOM
T ixTo Cfalen
P)\ TOP OF BANK\
d A �
Sk
a A A 6
TOE OF
Plan
View
NOTES:
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.
7. REFER TO PLANTING TABLES IN PLANSET FOR SPACING OF PLUGS AND
LIVESTAKES.
i31 Live Staking & Herbaceous Plugs
7.3 Not to Scale
BUFFER WIDTH
VARIES
SPACING PER
PLANTING PLAN
O
INSERTTHE 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.
USE A
MINIMUM OF 2
STAKES ON
UPSLOPE SIDE
-----------
FLOW
-----------
__-PLUG (TYP) \ \
WATTLE
BAREROOT OR
CONTAINER
BANKFULL
PLANTINGS
LIVESTAKES
RESTORED
EL
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
SOILSURFACE). GENTLY
SHAKE THE SEEDLING TO
ALLOW THE ROOTS TO
STRAIGHTEN OUT. DO
NOT TWIST OR SPIN THE
SEEDLING OR LEAVE THE
ROOTS J-ROOTED.
Plan View
INSERTTHE 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.
ALL ROOTS SHALL BE PRUNED
TO AN APPORIATE LENGTH
TO PREVENT J-ROOTI NG.
NOTES:
1. ALL PLANTS SHALL BE
PROPERLY HANDLED PRIOR TO
INSTALLATION TO INSURE
SURVIVAL.
O O
6 Tj iNi i
PUSH THE DIBBLE, OR PULL BACK ON THE REMOVE THE DIBBLE, OR
SHOVEL, DOWN TO HANDLE TO CLOSE THE SHOVEL, AND CLOSE AND
THE FULL DEPTH OF BOTTOM OF THE FIRM UP THE OPENING
THE BLADE. PLANTING HOLD. THEN WITH YOUR HEEL. BE
PUSH FORWARD TO CLOSE CAREFUL TO AVOID
THE TOP, ELIMINATING AIR DAMAGING THE SEEDLING.
POCKETS AROUND THE
ROOT.
/'-2-'N Bare Root Planting
7.3 Not to Scale
B USE A MINIMUM
OF 4 STAKES ON
DOWNSLOPE
SIDE
B'
MIN. 2 STAKES ON MINIMUM 4 STAKES ON
----- UPSLOPE� DOWNSLOPE
D
DOWNSLOPE
-lll,.,I11.:1L1 1L1, .1Ll,;.l I I_I I1—
MA IN
Section B-B'
MATTING
NOTES:
1. USE A MINIMUM 12INCH DIAMETER WATTLE
2. WATTLES SHALL BE FILLED WITH STRAW OR OTHER APPROVED MATERIAL
Q
zo
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�e �w
az
z
x�N
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�QHa
�W
m
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M
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. f ...�
r
v
Q
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 z
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. e F M
a Straw Wattles = r
7.3 Not to Scale 3 P a c &
IMPERVIOUS DIKE HIGH STRENGTH
(SEE INSET DIKE
DOUBLE STITCHED RADIUS OF TREE PROTECTION
"J" TYPE SEAMS. _ BARRIER PER PLANS.
/ INTAKE HOSE
A ) BAG PLACED ON �_�" 1 �� 0
PUMP AGGREGATED OR STRAW. EXISTING TERRAIN DEWATERING BAG Q
SEWN IN SPOUT STREAM BED �- z 0
HIGH STRENGTH STRAPPING �c 7 �� \� Q g U f
o DEWATERING FOR HOLDING HOSE
DISCHARGE HOSE BAG IN PLACE.WATER FLOW
FROM PUMP 8" of CLASS B RIPRAP �� W
15' FILTER FABRIC �
FLEXIBLE 15'to 20'
DISCHARGE HOSE Inset "A" C
Dewatering Bag —J�
-� —� SAND BAG Plan View
�� _�
(24" X 12" X 6") _I 6' WOODEN OR METAL "T" POSTS ♦o�����nq�
OR STONE. —� SHALL BE USED AS STANDARDS. ,pP
IMPERVIOUS SHEETING STABILIZED OUTLET USING CLASS B SAFETY FENCE SHALL BE ATTACHED TO 6 m d �j
9 —� STANDARDS TO FORM BARRIER. ;
RIPRAP TRENCHED INTO EXISTING
tO GROUND A MINIMUM OF 6". SIZE AND REMOVE ALL BRUSH AND
FLOW DEBRIS FROM INSIDE DRIPLINE. Ey od r' pm
�p �,� LOCATION TO BE DETERMINED IN THE y
FIELD BY THE ENGINEER. �'L
�F FLEXIBLE DISCHARGE HOSE FROM �G'J
SY Inset "B" PUMP AROUND PUMP HELD IN PLACE
WITH SAND BAGS AS NEEDED.
INTAKE HOSE
\ IMPERVIOUS DIKE Impervious Dike
DEWATERING \/ -�� (SEE INSET "B")
PUMP iii 10' MIN. in
NOTES:
1. ALL TREE PROTECTION BARRIERS SHALL BE REMOVED
° PRIOR TO CONTRACTOR DEMOBILIZATION.
° ' ' ' ' ' ' ' ' �' �' 2. SEE PLANS FOR LOCATION OF ALL TREE PROTECTION
° /�` BARRIERS.
DISCHARGE HOSE 10' X 5' STABILIZED OUTLET FILTER FABRIC Inset "C" Section View
DEWATERING BAG USING CLASS B RIPRAP AND Stabilized Outlet 4-j tt
(SEE INSET "A") NCDOT TYPE 2 FILTER FABRIC.
(SEE INSET "C") O O
NOTES: 11-4
m
Plan View
1 PumpAround Stem 1. PROVIDE STABILIZED OUTLET TOSTREAMBED. SAF 2 Tree Protection ,_,
7A Not to Scale 2. BAG ON FLAT GROUND OR STAKE AROUND IT TO 7.4 Not to Scale
PREVENT IT ROLLING DOWNHILL.
i-�
MUD MATS O [x]
SUPPORT LOG 8' MAX. WITH WIRE
INSTALLATION NOTES:
12" 0 MIN. Section View XCLASS B (6' MAX. WITHOUT WIRE)
OR BUILD UP TO STONE OR RIVER MATERIAL 1. USE WIRE A MINIUM OF 32" IN WIDTH AND MIDDLE AND VERTICAL
SPECIFIED GRADE WITH A MAXIMUM 6" MESH SPACING. WIRES SHALL BE 121
WITH RIVER MATERIAL 2. USE FILTER FABRIC A MINIMUM OF 36" IN GAGE MIN. Z FILTER FABRIC �
WIDTH AND FASTEN ADEQUATELY TO THE
WIRES AS DIRECTED BY THE ENGINEER.
3. PROVIDE 5' STEEL POST OF THE TOP AND BOTTOM STRAND
SELF -FASTENER ANGLE STEEL TYPE. ANGLE SHALL BE 10 GAUGE MIN.
MUD MATS STEEL TYPE.
STRAW WATTLE TO BE INSTALLED (TYP) MAINTENANCE NOTES: � LJ
- - - SEE DETAIL 5, SHEET 5.6 WIRE
1. ALL SILT FENCE SHOULD BE INSPECTED AT FILTER FABRIC EXISTING GROUND
NOTES: LEAST ONCE WEEKLY OR AFTER 0.25" OF N r
PRECIPITATION WITHIN 24 HOURS. COMPACTED FILL O1�
a
TOP OF BANK (TYP) - 1. CONSTRUCT STREAM CROSSING WHEN FLOW IS AT NORMAL a o
BASEFLOW. 2. TEARS IN THE FENCE, UNTRENCHED AREAS, _
OR OTHER FENCE FAILURES SHOULD BE
2. MINIMIZE CLEARING AND EXCAVATION OF STREAMBANKS. REPAIRED WITHIN 24 HOURS.
DO NOT EXCAVATE CHANNEL BOTTOM. 3. SEDIMENTTRAPPED BEHIND SILT FENCE bo I r
s TOE OF SLOPE (TYP) _ 3. INSTALL STREAM CROSSING PERPENDICULAR TO THE FLOW. SHOULD BE CAREFULLY REMOVED ONCE 1 I
4. MAINTAIN CROSSING SO THAT RUNOFF IN THE DEPTH REACHES 6'. 14„ II
FLOW CONSTRUCTION ROAD DOES NOT ENTER EXISTING CHANNEL. EXTEND FABRIC �I
5. STABILIZE AN ACCESS RAMP OF CLASS B STONE TO THE EDGE INTO TRENCH
-- - - OF THE MUD MAT.
6. CONTRACTOR SHALL DETERMINE AN APPROPRIATE RAMP
a ANGLE ACCORDING TO EQUIPMENT UTILIZED.
7. CROSSINGS SHOULD BE MONITORED TO ASSURE CORRECT z
FUNCTIONING OF MATS, LOOKING FOR ANY DEFECTS OR
SUPPORTLOG STRUCTURAL PROBLEMS.
12" 0 MIN. 8. CROSSINGS COVERED IN SOIL OR DEBRIS SHOULD BE e V
s' CLEANED AND THE MATERIALS REMOVED AND DISPOSED OF
- IN A STABLE LOCATION.
Plan View
2
Temporary Silt Fence or Sediment Barrier a Z
3 Temporary Stream Crossing -Timber P �' v
" 7.4 Not to Scale 7.4 Not to Scale
PART III
SELF -INSPECTION, RECORDKEEPING AND REPORTING
SECTION A: SELF -INSPECTION
Self -inspections are required during normal business hours in accordance with the table
below. When adverse weather or site conditions would cause the safety of the inspection
personnel to be in jeopardy, the inspection may be delayed until the next business day on
which it is safe to perform the inspection. In addition, when a storm event of equal to or
greater than 1.0 inch occurs outside of normal business hours, the self -inspection shall be
performed upon the commencement of the next business day. Any time when inspections
were delayed shall be noted in the Inspection Record.
Frequency
Inspect
(during normal
Inspection records must include:
business hours)
(1) Rain gauge
Daily
Daily rainfall amounts.
maintained in
If no daily rain gauge observations are made during weekend or
good working
holiday periods, and no individual -day rainfall information is
order
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
At least once per
1. Identification of the measures inspected,
Measures
7 calendar days
2. Date and time of the inspection,
and within 24
3. Name of the person performing the inspection,
hours of a rain
4. Indication of whether the measures were operating
event? 1.0 inch in
properly,
24 hours
5. Description of maintenance needs forthe measure,
6. Description, evidence, and date of corrective actions taken.
(3) Stormwater
At least once per
1. Identification of the discharge outfalls Inspected,
discharge
7 calendar days
2. Date and time of the inspection,
outfalls (SDOs)
and within 24
3. Name of the person performing the inspection,
hours of a rain
4. Evidence of indicators of stormwater pollution such as oil
event? 1.0 inch in
sheen, floating or suspended solids or discoloration,
24 hours
5. Indication of visible sediment leaving the site,
6. Description, evidence, and date of corrective actions taken.
(4) Perimeter of
At least once per
If visible sedimentation is found outside site limits, then a record
site
7 calendar days
of the following shall be made:
and within 24
1. Actions taken to clean up or stabilize the sediment that has left
hours of a rain
the site limits,
event? 1.0 inch in
2. Description, evidence, and date of corrective actions taken, and
24 hours
3. An explanation as to the actions taken to control future
releases.
(5) Streams or
At least once per
If the stream or wetland has increased visible sedimentation or a
wetlands onsite
7 calendar days
stream has visible increased turbidity from the construction
or offsite
and within 24
activity, then a record of the following shall be made:
(where
hours of a rain
1. Description, evidence and date of corrective actlonstaken, and
accessible)
event? 1.0 inch in
2. Records of the required reports to the appropriate Division
24 hours
Regional Office per Part III, Section C, Item (2)(a) ofthis permit
of this permit.
(6) Ground
After each phase
1. The phase of grading (installation of perimeter E&SC
stabilization
of grading
measures, clearing and grubbing, installation of storm
measures
drainage facilities, completion of all land -disturbing
activity, construction or redevelopment, permanent
ground cover).
2. Documentation that the required ground stabilization
measures have been provided within the required
timeframe or an assurance thatthey will be provided as
soon as possible.
NOTE: The rain inspection resets the required 7 calendar day inspection requirement.
PART III
SELF -INSPECTION, RECORDKEEPING AND REPORTING
SECTION B: RECORDKEEPING
1. E&SC Plan Documentation
The approved E&SC plan as well as any approved deviation shall be kept on the site. The approved
E&SC plan must be kept up-to-date throughout the coverage under this permit. The following
items pertaining to the E&SC plan shall be documented in the manner described:
Item to Document
Documentation Requirements
(a) Each E&SC Measure has been installed
Initial and date each E&SC Measure on a copy
and does not significantly deviate from the
of the approved E&SC Plan or complete, date
locations, dimensions and relative elevations
and sign an inspection report that lists each
shown on the approved E&SC Plan.
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
Initial and date a copy of the approved E&SC
in accordance with the approved E&SC
Plan or complete, date and sign an inspection
Plan.
report to indicate compliance with approved
ground cover specifications.
(d) The maintenance and repair
Complete, date and sign an inspection report.
requirements for all E&SC Measures
have been performed.
(e) Corrective actions have been taken
Initial and date a copy of the approved E&SC
to E&SC Measures.
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 3110the
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 (800) 662-7956, (800) 858-0368 or (919)
733-3300.
Occurrence
ReportingTimeframes (After Discovery) and Other Requirements
(a) Visible sediment
• Within 24 hours, an oral or electronic notification.
deposition in a
• Within 7 calendar days, a report that contains a description of the
stream or wetland
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
• Within 24 hours, an oral or electronic notification. The notification
release of
shall include information about the date, time, nature, volume and
hazardous
location of the spill or release.
substances per Item
1(b)-(c) above
(c) Anticipated
• A report at least ten days before the date of the bypass, if possible.
bypasses [40 CFR
The report shall include an evaluation of the anticipated quality and
122.41(m)(3)]
effect of the bypass.
(d) Unanticipated
• Wlthin24hours, an oral orelectronic notification.
bypasses [40 CFR
• Within 7calendardays, a report that includes an evaluation of the
122.41(m)(3)]
quality and effect of the bypass.
(e) Noncompliance
• Within 24 hours, an oral or electronic notification.
with the conditions
• Within 7 calendar days, a report that contains a description of the
of this permit that
noncompliance, and its causes; the period of noncompliance,
may endanger
including exact dates and times, and if the noncompliance has not
health or the
been corrected, the anticipated time noncompliance is expected to
environment[40
continue; and steps taken or planned to reduce, eliminate, and
CFR 122.41(1)(7)]
prevent reoccurrence of the noncompliance. [40 CFR 122.41(1)(6).
• Division staff may waive the requirement for a written report on a
case -by -case basis.
NCGOI SELF -INSPECTION, RECORDKEEPING AND REPORTING EFFECTIVE: 04/01/19 1
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GROUND STABILIZATION AND MATERIALS HANDLING PRACTICES FOR COMPLIANCE WITH
THE NCG01 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 NCG01 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
Site Area Description
this many calendar
Timeframe variations
days after ceasing
a Perimeter dikes
land disturbance
swales, ditches,
and perimeter
7
None
slopes
(b) High Quality Water
7
None
(HQW) Zones
(c) Slopes steeper
If slopes are 10' or less in length and are
than 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
-7 days for perimeter dikes, swales,
(d) Slo es p 3:1 to 4:1
14
ditches, perimeter slopes and HQW
Zones
-10 days for Falls Lake Watershed
-7 days for perimeter dikes, swales, ditches,
(e) Areas with slopes
perimeter slopes and HQW Zones
flatter than 4:1
14
-10 days for Falls Lake Watershed unless
there is zero slope
Note: After the permanent 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 longer than 90 calendar days after the last land disturbing activity.
Temporary ground stabilization shall be maintained in a manner to render the surface stable
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 pending 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 an ans under stored equipment.
Y
3. Identifyleaks and repair as soon as feasible or remove leaking equipment from the
p g
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.
ONSITE CONCRETE WASHOUT
STRUCTURE WITH LINER
1
BELOW GRADE WASHOUT STRUCTURE
ABOVE GRADE WASHOUT STRUCTURE
1,,
Ei
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.
NCGOI GROUND STABILIZATION AND MATERIALS HANDLING
EFFECTIVE: 04/01/19
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