20141127 Ver 1_Mitigation Site Plans_20141023

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BEFORE YOU DIOI
CALL 1 -800 -832 -4949
N.C. ONE —CALL CENTER
WS THE LAW
Mud Lick Creek Mitigation Site
Cape Fear River Basin 03030003
Chatham County, North Carolina
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North Carolina Ecosystem
Enhancement Program
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F�COSVStem
E n �aircement
PROORAM
DRAFT PLANS
October, 2014
Stream Origins
Stream Latitude Longitude
North ]Branch N 35° 45' 53.73" W 790 25' 56.95"
East Branch N 350 48'46.31" W 790 25' 56.17"
Mud Lick Creels N 35° 45' 50.97" W 790 26'07.48"
Sheet Index
Title Sheet
Project Overview
General Dotes and Symbols
Typical Sections
Stream Plan and Profile
Planting Plan
Erosion and Sediment Control
Cross - Sections
Details
Project Directory
Surveying:
Turner Land Surveying, PLLC
P.O. Box 41023
Raleigh, NC 27629
David S. Turner, PLS
919 - 575 -1375
Engineering:
Wildlannds Engineering, Banc
]License No. ]F -0531
5605 Chapel Hill Road
Raleigh, NC 27607
Angela N. Allen, PE
919 -551 -9956
0.1
0.2
0.3
1.1 -1.3
2.1 -2.10
3.1
Not Included
5.1 -5.3
6.1 -6.3
Owner:
Ecosystem Enhancement Program
1652 Mail Service Center
Raleigh, NC 27699 -1652
Perry Sugg
919 - 707 -5976
DENR Contract No. D14001i
EEP ID No. 93452
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BEGIN NORTH BRANCH /\
MUD LICK CREEK
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General Notes
1. All erosion and sediment control practices shall comply with the North Carolina
Erosion and Sediment Control Planning and Design Manual where applicable.
2. Contractor will install pump- around systems to divert flow while working in live,
flowing channels. The Contractor shall operate and maintain the pump- around
system twenty four hours a day unless all disturbed areas within the
pump- around work area can be stabilized by the end of the work day. Contractor
shall not remove pump- around systems and advance to the next phase until the
current phase is completed and stabilized.
3. In areas without a pump- around system, Contractor shall disturb only as much
channel bank as can be stabilized with temporary seeding, mulch, and erosion
control matting by the end of each workday.
4. When crossing an active section of new or old steam channel, a mud mat shall
be installed according to the details.
5. All graded areas with slopes steeper than 3:1 will be stabilized within seven
days. All other areas will be stabilized within 14 days.
6. Locations for staging and stockpile areas and stream crossings have been
provided. Additional or alternative staging and /or stockpile areas and stream
crossings may be utilized by the Contractor provided that all practices comply
with the North Carolina Erosion and Sediment Control Planning and Design
Manual and are approved by Engineer prior to implementation.
7. Various types of constructed riffles are specified in this plan set per profiles,
plans, and details. Contractor will build the specific types of constructed riffles at
locations shown on the plans.
8. Contractor is to make every effort to avoid damaging or removing existing trees.
Tree protection fence will be installed as shown on plans.
9. Invasive plant species including but not limited to Chinese privet will be removed
from or treated within all areas of the conservation easement.
10. Under no circumstances will the Contractor Exceed the Limits of Disturbance
shown on the plans.
Construction Sequence
1. Contact North Carolina "ONE CALL" Center (1.800.632.4949) before any
excavation.
2. Install and maintain on -site rain gauge and log book to record rainfall amounts
and dates. Contractor is responsible for completing self- inspection forms
required by DENR permit. Permit, rainfall log, Erosion and Sediment Control
Plan, and completed inspection forms shall be maintained on site at all times.
3. Mobilize equipment and materials to the site.
4. Identify and establish construction entrance, staging and stockpile areas, haul
roads, silt fencing, tree protection fencing and stream crossings as indicated on
the plans for work areas. Note that all construction traffic will enter the site from
the two construction entrances shown on the plans at Pisgah Bridge Road and
Mack road. All haul roads shall be monitored for sediment loss on a daily basis.
In the event of sediment loss, silt fence or other acceptable sediment and
erosion control practices shall be installed.
5. Set up temporary facilities, locate equipment within staging area, and stockpile
materials needed for the initial stages of construction within stockpile area(s).
6. Perform any necessary clearing and grubbing in phases as work progresses.
Bank vegetation and vegetation immediately adjacent to live channels shall be
left undisturbed as long as possible.
7. Remove or treat invasive species within the conservation easement as described
in project specifications or as directed by engineer in the field.
8. Construction should generally progress from upstream to downstream to prevent
sediment runoff from upstream construction on completed downstream reaches.
9. In areas where a pump around is required as shown on the plans, install
impervious dikes at upstream and downstream ends of pump around locations.
The pump around operation shall be performed between these locations as
described in the plans and details. The pump around operation shall be installed
in a manner that it will be allowed to run for twenty four hours a day unless
channel within the pump around location can be stabilized within the work day.
10. Perform excavation and grading of channel and floodplain. Grade area between
upstream and downstream dike locations where pump around operations are
needed. The pump around operation shall be installed in a manner that it will be
allowed to run for twenty four hours a day unless channel within the pump
around location can be stabilized within the work day.
11. Stockpile soil in designated stockpile areas as necessary. Ensure that silt fence
is properly installed and functioning along stream side of stockpiles as shown on
Erosion and Sediment Control Plan.
12. Construct in- stream structures and install riffle features according to plans and
details.
13. Seed, mat, and mulch banks and floodplain areas according to plans and
details.
14. Once disturbed areas and exposed slopes are stabilized, remove pump around
system, if used, and progress to the next phase. Note: At certain locations, water
will be rerouted to the newly constructed channel in conjunction with removal of
pump around systems.
15. Backfill abandoned channel sections with stockpiled soil. All non - native, invasive
species shall be treated and /or removed from the old channel prior to backfilling.
16. Seed and mulch any backfill sections before proceeding to next phase.
17. Once all phases of channel and floodplain construction are complete, prepare
the floodplain for planting per the specifications.
18. Remove temporary stream crossings, stockpile areas, and erosion control
devices.
19. Apply permanent seed, mulch, and vegetation in the floodplain.
20. Ensure that the site is free of trash, debris, and any leftover construction
materials prior to demobilization.
21. Demobilize grading equipment from the site.
22. Seed, mulch and stabilize staging areas, stockpile areas, and construction
entrances.
Existing Features
Proposed
Features
- - - - - -
Existing Property Boundary
LDD
LOD
Proposed Limits of Disturbance
- Existing 1' Minor Contour
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Proposed Conservation Easement
10 +00
Existing 5' Major Contour
-
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Proposed Stream Alignment
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Existing Fenceline
-
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Proposed Bankfull
Existing Thalweg
Proposed 5' Major Contour
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Existing Right of Way
Proposed 1' Minor Contour
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Existing Overhead Electric Line
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Proposed Chunky Riffle
See Detail 4, Sheet 6.1
Existing Edge of Pavement
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Existing Overhead Electric Pole
See Detail 3, Sheet 6.1
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Existing Concrete Structure
See Detail 1, Sheet 6.1
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Proposed Woody Riffle
See Detail 2, Sheet 6.1
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Existing Ford Crossing
Proposed Angled Log Drop
See Detail 2, Sheet 6.2
Existing Farm Road
Proposed Angled Log Step Pool
See Detail 3, Sheet 6.2
Existing Bedrock/Boulders /Outcrop
Proposed Brush Toe
See Details 1, Sheet 6.3
Proposed Log Vane
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Existing Wetlands
Proposed Permanent Ford Crossing
See Detail 1, Sheet 6.3
Existing Treeline
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Permanent Culvert Crossing
Existing Tree
Existing Telephone Box
Designed Channel Plug
See Detail 2, Sheet 6.3
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HEAD OF RIFFLE ELEVATIOI
POINT PER PROFILI
Profile A -A'
SEE PROFILE
6" SALVAGED ONSITE
FLOW COBBLE /GRAVEL
BED MATERIAL
Profile View
A -A'
LOG STRUCTURE
EXPOSED UNTIL
TOP OF BANK CENTER OF CHANNEL
TOEOFSLOPE
Log Section B -B'
NOTES:
• STRUCTURES SHOULD VARY IN SIZE
AND TYPE WITHIN EACH RIFFLE.
• ROCK MAY BE SUBSTITUTED FOR
LOGS AT ENGINEER'S DISCRETION.
Plan View
B
HEAD RIFFLE
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COBBLE /GRAVEL
BED MATERIAL
RIFFLE INVERT PER PROFILE
TOP OF BANK (TYP)
Section B -B'
Constructed Riffle
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BURY INTO BANK S MIN. (TYP)
BURY INTO BANK V MIN. (TYP)
Jazz Riffle Structure
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Plan View
B
VANES MAY
=D IN PLACE
3S AT
EER'S DISCRETION
MICRO POOL HABITAT
BEHIND LARGER
WOODY DEBRIS
Plan View
3" TO 6" DIAMETER WOODY DEBRIS
WORKED INTO RIFFLE SUBSTRATE MICRO POOL HABITAT
A BEHIND LARGER WOODY DEBRIS
6" SALVAGED ONSITE
COBBLE /GRAVEL
BED MATERIAL
Section A -A'
3" TO 6" BRUSHY MATERIAL
TOP OF BANK WORKED INTO ROCKY SUBSTRATE
TOE OF SLOPE
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6" SALVAGED ONSITE LOG EXPOSED 1" TO 3" ABOVE
COBBLE /GRAVEL FINISHED RIFFLE ELEVATION
BED MATERIAL
2
Woody Riffle
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LENGTH VARIES PER PLAN
B
TOP OF BANK (TYP)
TOE OF SLOPE (TYP)
HEAD OF RIFFLE
ELEVATION POINT
PER PROFILE
— B'
Plan View
CLASS 1 STONE
OR SALVAGED
6" SALVAGED ONSITE ONSITE BOULDERS
COBBLE/GRAVEL MIN 0.5'x1'x1.5'
BED MATERIAL
3" MAX
Section A -A'
CLASS 1 STONE
OR SALVAGED
ONSITE BOULDERS
MIN 05x1'x1.5'
TAIL OF RIFFLE
ELEVATION POINT
PER PROFILE
6" SALVAGED ONSITE
COBBLE /GRAVEL
BED MATERIAL
CLASS 1 STONE
OR SALVAGED RIFFLE INVERT PER PROFILE
ONSITE BOULDERS
MIN 0.5'x1'x1.5' TOP OF BANK (TYP)
r 3" MAX
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Section B -B'
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COBBLE/GRAVEL
BED MATERIAL
FL1 OWW
SILL ELEVATION PER PROFILE
ADD ROOT WAD, BRUSH TOE, 12" - 15" DIAMETER LOG
POOL LENGTH PER PROFILE
HEADER LOG
STREAMBED
10° - 15° ANGLE
OR TRANSPLANTS TO LARGER BACKFILL
STREAMS (DEVIL'S RACETRACK STREAMBED
>
NONWOVEN
FOOTER LOG
A'
& NORTH BRANCH) AS
DIRECTED BY ENGINNER POOL DEPTH PER PROFILE
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20'3,
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I POOL/
MNFUPSTR UPSTREAM
'
/11 '
SBCtIOD A -A'
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BACKFILL �
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—TOE OF SLOPE TYP
I
INVERT ELEVATION
PER PROFILE
} A
TOP OF BANK
TOP OF
BANK (TYP)
A' / \
FL'O= _ -
TOE OF
A
Plan View
CHANNEL
BOTTOM WIDTH
_
SLOPE
STABILIZE VANE / HEADER LOG
ONE BOULDER
SCOUR
ON EACH SIDE FOOTER LOG
POOL
Profile B - B'
7EMBEDWITH
12" - 15" DIAMETER LOG
4(MINO PER PROFILE (TYP)
EXCAVATE POOL
PER PROFILE
Section A - X
Plan View
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ane
LT ® Vane
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2
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A
MATTING
A
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55° TO 65°
Op
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BURY INTO BANK T MIN.(TYP)
SVO
BANKFULL
'tO�OF
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FLOW
TOP OF BANK
DIAMETER
P
NORMAL WATER
SURFACE
SALVAGED ONSITE NATIVE STONE
GREATER
GREATER (TYP) )
pEpF
ALTERNATING SOIL
AND BRUSH/WOODY DEBRIS LAYERS
—
-,.
POOL
pFg
3 MIN.
-
-��
WIDTH
PER
TYPICAL
'COP
Plan View
(TYP)
FILTER FABRIC
SECTION
3'
Profile View
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SALVAGED ONSITE
BACKFILL
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NATIVE STONE
EROSION CONTROL MATTING
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COMPACTED SOIL TOP OF BANK BANKFULL
LIVE WIPS - WINTER CONSTRUCTION ONLY
- I
6" ABOVE
BRUSH AND WOOD DEBRIS
TOE OF
\
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TOP OF BANK
IN
RT
RIFFLE INVERT
" -4%
TOE OF SLOPE
g
3' MIN.
II
(TYP)
Log Section B-13'
EXCAVATE TO 6" BELOW POOL DEPTH
+]+
1S
NOTE:
Section A -A' NOTES:
1. LOGS WITHOUT ROOT MASS MAY
g'
1. OVEREXCAVATE T OUTSIDE OF TOP OF BANK (BANKFULL).
BE USED ONLY IF APPROVED BY
Plan View
2. INSTALL A LAVER OF BRUSH/WOODY DEBRIS, WHICH SHALL CONSIST OF
THE PROJECT ENGINEER.
SMALL BRANCHES AND ROOTS COLLECTED ON -SITE. LIGHTLY COMPACT
BRUSHMOODY DEBRIS LAVER.
2. BOULDER MATERIAL CAN BE
3. BRUSH SHOULD BE ALIGNED SO STEMS ARE ROUGHLY PARALLEL AND IS
SUBSTITUTED IN PLACE OF
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INSTALLED POINTING SLIGHTLY UPSTREAM.
ANGLED LOGS WITH APPROVAL
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1� 1L
4. INSTALL EARTH BACKFILL OVER BRUSHNJOODY LAYER ACCORDING TO
OF ENGINEER.
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1 Brush Toe
TYPICAL SECTION DIMENSIONS.
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5. INSTALL EROSION CONTROL MATTING AND BANK STABILIZATION PER PLANS.
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WATER DIVERSION WATER DIVERSION
A A'
ABANDONED �X
CHANNEL A/
CHANNEL CHANNEL
FILTER FABRIC
NOTES:
Plan View
1. FORD CROSSING SHALL BE INSTALLED
PERPENDICULAR TO CHANNEL BANKS.
2. MAINTAIN DIVERSION CHANNEL TO
INSURE RUNOFF DOES NOT ENTER
CHANNEL.
3. CONTRACTOR SHALL DETERMINE
APPROPRIATE FORD DIMENSIONS.
COMPACTED SELECT
EROSION CONTROL MAT MATERIAL CHANNEL BACKFILL
SIDE SLOPE PER
TYPICAL SECTION
BOULDER TOE
Ford Crossing
PROTECTION
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SestionA -A'
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