20181182 Ver 2_Revised Set_20190417

Strickland, Bev
From: Mularski, Eric <[e-mail]>
Sent: Wednesday, April 17, 2019 4:22 PM
To: Johnson, Alan
Cc: Hoyt, Kelly
Subject: RE: [External] Bumgarner Property Culvert Replacement Project - 20181182, Version 2
Attachments: BumgarnerSet4.17.19_Revised.pdf
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[e-mail]
Alan. Attached are the revised plans. Please let us know if you require any additional information to process our request.
Thank you,
Eric Mularski, Pws
D 704-973-6878 M 704-806-1521
hdrinc.com/follow-us
From: Johnson, Alan [mailto:[e-mail]]
Sent: Tuesday, April 16, 2019 4:13 PM
To: Mularski, Eric <Eric.Mularski @hdrinc.com>
Subject: RE: [External] Bumgarner Property Culvert Replacement Project - 20181182, Version 2
Based on this info, I will go ahead and issue the approval. Submit the culvert plans as soon as possible. thanks
From: Mularski, Eric <[e-mail]>
Sent: Tuesday, April 16, 2019 4:10 PM
To: Johnson, Alan <[e-mail]>
Cc: Hoyt, Kelly <[e-mail]>; Velasquez, Johanna <[e-mail]>; Baysden,
Robert <[e-mail]>
Subject: [External] Bumgarner Property Culvert Replacement Project - 20181182, Version 2
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[e-mail]
Alan,
We apologize, there is a discrepancy with the permanent impacts totals for the recently submitted Pre -Construction
Notification for the Bumgarner Property Culvert Replacement Project (Project ID# 20181182, Version 2). We neglected
to include impacts from the original approval dated August 30, 2018 (attached). The stream impact table for Section D.3
of the PCN should read.

3a.
3b.
3c.
3d.
3e.
3f.
3g.
Stream impact
Type of impact
Stream name
Perennial
Type of jurisdiction
Average
Impact
number -
(PER) or
(Corps - 404, 10
stream width
length
Permanent (P) or
intermittent
DWQ — non -404,
(feet)
(linear feet)
Temporary (T)
(INT)?
other)
S1 P T
Tributary to South
Fill (CMPs)
Fork Catawba
INTR
DWQ
10
25
River
S2 P T
Tributary to South
Fill (Rip Rap)
Fork Catawba
INTR
DWQ
10
20
River
S3 P T
Tributary to South
De -Watering
Fork Catawba
INTR
DWQ
10
60
River
3h. Total stream and tributary impacts
45
(Permanent)
60
(Temporary)
105
(TOTAL)
3i. Comments: The project will result in approximately 45 linear feet of permanent impacts associated with the installation of the
CMPs and downstream rip rap dissipater pad. Approximately 60 linear feet of temporary impacts are associated with de-
watering for the pump around, impervious dikes, the stabilized outlet section, and the sediment removal device.
Additionally, we are in the process of revising the culvert design plans to include the northern culvert as the "Baseflow"
culvert. The southern culvert will be elevated approximately 1 foot to serve as the "Overflow' culvert. The invert
elevation on the plans (SHEET OOC-001) and the cross-section and profile details (SHEET OOC-02) will be revised to reflect
this change. The plans will be forwarded as soon as possible. We apologize for any inconvenience and appreciate your
review of this application.
Sincerely,
Eric Mularski, Pws
Environmental and Regulatory Team Lead
HDR
440 S. Church Street
Charlotte, NC 28202
D 704-973-6878 M 704-806-1521
Eric.mularski(cD_hdrinc.com
hdrinc.com/follow-us
From: Johnson, Alan[mailto:[e-mail]]
Sent: Tuesday, April 16, 2019 2:22 PM
To: Hoyt, Kelly <[e-mail]>
Subject: project

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So, you have 25 ft for culvert and 20 ft of (new) riprap. So total permanent impact is 45 ft.
DM%I-on of Water RC!-tiourcr�
Alan D Johnson — Senior Environmental Specialist
NC Dept. of Environment & Natural Resources (NCDENR)
Division of Water Resources - Water Quality Regional Operations
610 East Center Ave., Suite 301, Mooresville, NC 28115
Phone: [phone] Fax: [phone]
E-mail correspondence to and from this address may be subject to the North Carolina Public Records Law and may be
disclosed to third parties unless the content is exempt by statute or other regulation.
3

BUMGARNER PROPERTY
CULVERT REPLACEMENT
MAIDEN, CATAWBA COUNTY, NORTH CAROLINA
FEBRUARY 2019
CONTACT INFORMATION
OWNER: DUKE ENERGY CAROLINAS, LLC
526 SOUTH CHURCH STREET
CHARLOTTE, NC 28202
CONTACT: RANDY N. VELTRI
PHONE: [phone]
VICINITY MAP (N.T.S.) N
ENGINEERING FIRM: HDR ENGINEERING, INC. OF THE CAROLINAS
440 SOUTH CHURCH STREET, SUITE 1000
CHARLOTTE, NC 28202
N.C.B.E.L.S. License Number F-0116
CONTACT: ROBERT BAYSDEN, PE
PHONE: [phone]
1
2
3
ISSUE DATE DESCRIPTION
HDR Engineering Inc.
of the Carolinas
440 S. Church St. Suite 1000
Charlotte, NC 28202-2075
704.338.6700
N.C.B.E.L.S. License Number
F-0116
SHEET INDEX
OOG-01 COVER SHEET
OOG-02 OVERVIEW PLAN, LEGEND AND NOTES
OOC-01 CULVERT PLAN
OOC-02 CULVERT PROFILE & CROSS SECTION
OOC-03 EROSION & SEDIMENT CONTROL
OOD-01 CIVIL DETAILS - SHEET 1
OOD-02 CIVIL DETAILS - SHEET 2
SPECIFICATIONS
1) UTILIZE THE NORTH CAROLINA EROSION AND SEDIMENT CONTROL MANUAL AND
SPECIFICATIONS FOR EROSION CONTROL AND STABILIZATION.
2) UTILIZE CIVIL & ENVIRONMENTAL CONSULTANTS, INC. FOR CMP DESIGN.
DUKE
ENERGY
400 S. TRYON STREET
PO BOX 1007
CHARLOTTE N.C. 28201-1007
TELEPHONE NO. [phone]
SHEET 1 OF 7 I AS 1�'� � I ' OGC- 07

\
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El -
48" CMP
(WASHED-OUT)--\
1 i I
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BRIDGE II
II�
II
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SELF -INSPECTION
EFFECTIVE OCTOBER 1, 2010, PERSONS RESPONSIBLE FOR LAND DISTURBING ACTIVITIES MUST
INSPECT THE SEDIMENT AND EROSION CONTROL MEASURES ON A PROJECT AFTER EACH PHASE
OF THE PROJECT TO MAKE SURE THAT THE APPROVED EROSION AND SEDIMENTATION CONTROL
PLAN IS BEING FOLLOWED. SELF -INSPECTION REPORTS ARE REQUIRED. A SAMPLE
SELF -INSPECTION REPORT, AS WELL AS DETAILS OF THE SELF -INSPECTION PROGRAM, CAN BE
FOUND ON THE LAND QUALITY WEB SITE:
http://portal.ncdenr.org/web/Ir/erosion
AS A MINIMUM, THE INSPECTIONS SHALL BE PERFORMED AFTER EACH OF THE FOLLOWING
PHASES OF A PLAN:
1. INSTALLATION OF PERIMETER EROSION AND SEDIMENT CONTROL MEASURES
2. CLEARING AND GRUBBING OF EXISTING GROUND COVER
3. COMPLETION OF ANY PHASE OF GRADING THAT REQUIRES PROVISION OF STABILIZATION
4. COMPLETION OF CONSTRUCTION OR DEVELOPMENT
5. QUARTERLY UNTIL THE ESTABLISHMENT OF PERMANENT GROUND COVER IS FULLY
ESTABLISHED.
PLEASE NOTE THESE INSPECTION REQUIREMENTS ARE IN ADDITION TO NPDES INSPECTION
REQUIREMENTS. IF YOU HAVE QUESTIONS ABOUT THE SELF -INSPECTION PROGRAM, PLEASE
CONTACT NCDEQ ASHEVILLE REGIONAL OFFICE 828-296-4500.
EROSION AND SEDIMENT CONTROL NARRATIVE
PROJECT INFORMATION
THIS EROSION AND SEDIMENT CONTROL (E&SC) PLAN ADDRESSES THE INSTALLATION OF A DOUBLE 84"
CMP CULVERT IN AN UNNAMED TRIBUTARY OF THE SOUTH FORK CATAWBA RIVER JUST NORTH OF
BLACKBURN BRIDGE ROAD. THE PROJECT LOCATION IS OUTSIDE OF MAIDEN, CATAWBA COUNTY, NORTH
CAROLINA.
THE LOCATION OF THE E&SC BMP FEATURES SHOWN ON SHEET OOC-03 WERE DEVELOPED BASED ON
TOPOGRAPHIC INFORMATION AND AERIAL IMAGERY, AND SUBJECT TO CHANGE BASED ON FIELD
CONDITIONS. PROTECTING THE TRIBUTARY IS THE CRITICAL ELEMENT OF THIS PROJECT AND A PUMP
AROUND IS PLANNED TO PROVIDE MOVEMENT OF BASE FLOW AROUND THE CONSTRUCTION ZONE DURING
CULVERT PLACEMENT.
A CLEAN WATER ACT SECTION 404/401 PRE CONSTRUCTION NOTIFICATION HAS BEEN APPROVED BY THE US
ARMY CORPS OF ENGINEERS (SAW -2018-01686) AND THE NC DIVISION OF WATER RESOURCES (DWR#
18-1182) FOR LINEAR STREAM DISTURBANCE TOTALING:
25 LF - PERMANENT IMPACTS (CULVERT)
60 LF - TEMPORARY (DIKES & PUMP AROUND)
EROSION AND SEDIMENT CONTROL MEASURES
PROPOSED EROSION AND SEDIMENTATION CONTROL MEASURES TO BE UTILIZED DURING THE CULVERT
INSTALLATION, INCLUDE:
1. CONSTRUCTION ENTRANCE, USE EXISTING JOCK LOOP PROJECT ACCESS
2. COMPOST SOCKS (WATTLES)
3. EXISTING ACCESS DRIVE STABILIZATION
4. SILT FENCE
5. RIP -RAP SLOPE STABILIZATION
6. SEEDING
PROJECT CONSTRUCTION SEQUENCE
THE FOLLOWING PROJECT SEQUENCE SHALL BE FOLLOWED:
1. OBTAIN PLAN APPROVAL AND PERMITS PRIOR TO BEGINNING WORK.
2. HOLD PRE -CONSTRUCTION MEETING
3. COORDINATE CONSTRUCTION SCHEDULE WITH THE PROPERTY OWNER
4. INSTALL CONSTRUCTION ENTRANCE WHERE APPLICABLE WITHIN DUKE ENERGY R/W.
5. STABILIZE EXISTING DRIVE ACCESS.
6. INSTALL PERIMETER E&SC MEASURES (I.E. SILT FENCE)
7. INSTALL PUMP AROUND SYSTEM INCLUDING IMPERVIOUS DIKES AND EROSION CONTROL MEASURES.
8. EXCAVATE THE CHANNEL BED WHERE THE CULVERTS WILL BE PLACED 18" AND PLACE A 6" BED OF
COMPACTED #57 STONE FOR CULVERT BEDDING. PIPE INVERTS TO BE SET 12" BELOW EXISTING
STREAM ELEVATION WITH 6" OF STONE BEDDING.
9. INSTALL CULVERTS AND ALL NECESSARY COMPACTED BACKFILL.
10. STABILIZE 2:1AND STEEPER SLOPES WITH CLASS 1 RIP -RAP ON LAYER OF NON -WOVEN GEOTEXTILE
FABRIC (15" DEPTH).
11. STABILIZE ALL EXPOSED AREAS, AND REMOVE EROSION CONTROL MEASURES AND PERFORM FINAL
SITE RESTORATION.
MAINTENANCE PLAN
THE MAINTENANCE PLAN SHALL BE FOLLOWED UNTIL THE SITE IS STABILIZED. MAINTENANCE OF SEDIMENT
AND EROSION CONTROL MEASURES WILL BE PERFORMED BY A SUBCONTRACTOR.
1. ALL SEDIMENT AND EROSION CONTROL DEVICES AND PLANTED AREAS SHALL BE INSPECTED EVERY
SEVEN (7) CALENDAR DAYS AND AFTER EACH RAINFALL OCCURRENCE THAT EXCEEDS ONE-HALF (1/2 )
INCH WITHIN A 24-HOUR PERIOD. DAMAGED OR INEFFECTIVE DEVICES SHALL BE REPAIRED OR
REPLACED, AS NECESSARY, AS SOON AS PRACTICAL.
2. ALL TEMPORARY CONTROL DEVICES (I.E. SILT FENCE) SHALL BE REMOVED ONCE CONSTRUCTION IS
COMPLETE AND THE EXPOSED AND RE -GRADED SECTIONS ARE STABILIZED.
3. ALL SEEDED AREAS SHALL BE FERTILIZED, RE -SEEDED AS NECESSARY AND MULCHED, ACCORDING TO
THE SEEDING PLAN (SHEET OOD-03) TO MAINTAIN A VIGOROUS, DENSE VEGETATION COVER.
4. ALL SEEDED AREAS SHALL BE RE -FERTILIZED IN THE SECOND YEAR UNLESS GROWTH IS FULLY
ADEQUATE.
DISTURBANCE
TOTAL DISTURBANCE: 0.13 ACRES
HDR Engineering Inc.
of the Carolinas
440 S. Church St. Suite 1000
Charlotte, NC 28202-2075
704.338.6700
N.C.B.E.L.S. License Number
F-0116
SPECIAL NOTE:
IN ADDITION TO DESIGNED AND SHOWN
MEASURES, ADDITIONAL EROSION AND
SEDIMENT CONTROL BMPS MAY BE UTILIZED
AS NEEDED IN POTENTIAL AREAS OF
DISTURBANCE, WHICH MAY STABILIZATION
OF EXISTING ACCESS ROADS, SILT FENCE,
WATTLES, OR MATTING
EROSION AND SEDIMENT CONTROL LEGEND
SILT FENCE
ulSILT FENCE ROCK OUTLET
-LOD- LIMITS OF DISTURBANCE
DIKE FOR PUMP AROUND
PUMP AROUND HOSING
CLASS 1 RIP -RAP (18") ON LAYER OF NON -WOVEN
GEOTEXTILE FABRIC
,SI EE -77 2 OF 7
25548 '
,Q4117119 Z
10 0 10 20
SCALE: 1 " = 10'
DUKE
ENERGY
400 S. TRYON STREET
PO BOX 1007
CHARLOTTE N.C. 28201-1007
TELEPHONE NO. [phone]
W III WN Al -

7w
MIN
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D/RECTION OF
� SOW
9n,
0
0
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ACCESS DRIVE
CENTERLINE ALIGNMENT
STA: 10+00.00
SLOPE 10:1 TO
EXISTING GRADE
SEE NOTE 4
ROAD BERM ELEVATION
OVER PIPE: 796.84'
40 LINEAR FEET
OF 84" CMP (2) PER
CEPLANS &
SPECIFICATIONS
_-7g4
PIPE 1
N: 676496.150
E: 1323938.035
INV ELEV: 787.95'
CHANNEL INV: 788.95'
PIPE 2 J
N: 676487.483
E: 1323943.023
INV ELEV: 788.95'
CHANNEL INV: 789.95' \
EXISTING DUKE ENERGY
RIGHT OF WAY
EXISTING JOCK'S LOOP
IMPROVEMENT ESC MEASURES
CUL VERT PL241V
EXISTING JOCK'S LOOP
IMPROVEMENT ESC MEASURES
EXISTING DUKE ENERGY
RIGHT OF WAY
\ \\ \DIRECTO ' off.
ION
.84'
ACCESS DRIVE. SEE CEC PLANS
FOR DETAILS
ACCESS DRIVE
CENTERLINE ALIGNMENT
STA: 10+97.00
S-HEE77 3 OF 7
HDR Engineering Inc.
of the Carolinas
440 S. Church St. Suite 1000
Charlotte, NC 28202-2075
704.338.6700
N.C.B.E.L.S. License Number
F-0116
CULVERT PLAN GENERAL NOTES:
1. SEE SHEET OOG-02 FOR EROSION CONTROL
NOTES.
2. SEE SHEET OOC-03 FOR EROSION CONTROL
PLAN.
3. SEE SHEET OOC-02 FOR GRAVEL DRIVE
CENTERLINE PROFILE AND DOUBLE
CULVERT PROFILE.
4. ARMOR SLOPES 2:1 AND STEEPER WITH
CLASS 1 RIP -RAP 18" THICK ON LAYER OF
NON -WOVEN GEOTEXTILE FABRIC.
5. 20' CLASS 1 RIP RAP OUTLET PROTECTION
BELOW PROPOSED CULVERTS WILL BE
KEYED IN TO PREVENT WASHOUT AND
INSTALLED AT AN ELEVATION TO MAINTAIN
AQUATIC PASSAGE AND PROMOTE
SURFACE WATER FLOW DURING LOW FLOW
CONDITIONS.
FA
• 25548 ✓/♦_
3 n04117119�
.........••.. �
10 0 10 20
SCALE: 1 " = 10'
DUKE
ENERGY.
400 S. TRYON STREET
PO BOX 1007
CHARLOTTE N.C. 28201-1007
TELEPHONE NO. [phone]

790'
r�
— —vil —vi—l— ki ll " 11
PIPE INV AT C/L OF ROAD: 788.20'
CHANNEL INV AT C/L OF ROAD: 789.20'
GRAVEL DRIVE CENTERLINE PROFILE
SCALE: H: 1 "=20', V: 1 "=4'
LOOKING UPSTREAM
APPROXIMATE
PROPOSED GRADING
APPROXIMATE
EXISTING GRADING
DOUBLE CULVERT SECTION
SCALE: 1"=5'
ffifflAINAWNWA
Aff
790'
.11
PROPOSED RIP RAP
SLOPE STABILIZATION
790'
STA: 10+00.00
CULVERT INV ELEV: 787.95'
CHANNEL ELEV: 788.95'
9+75
7'
10+00
PROPOSED STRUCTURAL
FILL MATERIAL. SEE CEC SHEETS.
800'
20' PROPOSED GRADE
ELEV: 797.84'
10+50
PROPOSED 84" CULVERT
EXISTING GRADE
790'
STA: 10+40.00
CULVERT INV ELEV: 788.45'
CHANNEL ELEV: 789.45'
10+75
PROPOSED CHANNEL C/L
STA: 10+20.00
SEE CROSS SECTION THIS SHEET
CULVERT INV: 788.20'
CHANNEL INV: 789.20'
PIPE 1 CULVERT PROFILE
SCALE: H: 1 "=20'; V: 1 "=4'
800'
PROPOSED RIP RAP
SLOPE STABILIZATION
STA: 10+00.00
CULVERT INV ELEV: 788.95'
CHANNEL ELEV: 789.95'
9+75
PROPOSED STRUCTURAL
FILL MATERIAL. SEE CEC SHEETS.
800'
20' PROPOSED GRADE
I / ELEV: 797.84'
PROPOSED 84" CULVERT
EXISTING GRADE
790'
STA: 10+40.00
CULVERT INV ELEV: 789.45'
CHANNEL ELEV: 790.45'
10+00 10+50 10+75
PROPOSED CHANNEL C/L
STA: 10+20.00
SEE CROSS SECTION THIS SHEET
CULVERT INV: 789.20'
CHANNEL INV: 790.20'
PIPE 2 CULVERT PROFILE
SCALE: H: 1 "=20'; V: 1 "=4'
SHEET 4 OF 7
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HDR Engineering Inc
of the Carolinas
440 S. Church St. Suite 1000
Charlotte, NC 28202-2075
704.338.6700
N.C.B.E.L.S. License Number
F-0116
4 DUKE
ENERGY
400 S. TRYON STREET
PO BOX 1007
CHARLOTTE N.C. 28201-1007
TELEPHONE NO. [phone]

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SEE DETAIL 3 SHEET OOD-01
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IMPERVIOUS DIKE FOR
PUMP AROUND. SEE DETAIL 2
SHEET OOD-01 FOR DIKE AND
PUMP AROUND PLAN.
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SILT FENCE (TYP) PER
DETAIL 4 SHEET OOD-01
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HDR Engineering Inc.
of the Carolinas
440 S. Church St. Suite 1000
Charlotte, NC 28202-2075
704.338.6700
N.C.B.E.L.S. License Number
F-0116
EROSION AND SEDIMENT CONTROL GENERAL NOTES:
1. SEE SHEET OOG-02 FOR EROSION CONTROL
NOTES..
2. SEE SHEET OOD-03 FOR SEEDING
SPECIFICATIONS.
3. COORDINATE HOSING LOCATION WITH
ACTIVE CONSTRUCTION MEANS AND
METHODS.
EROSION AND SEDIMENT CONTROL LEGEND
SF SILT FENCE
ulSILT FENCE ROCK OUTLET
-LOD- LIMITS OF DISTURBANCE
DIKE FOR PUMP AROUND
00 PUMP AROUND HOSING (SEE NOTE 3)
R-
FA
25548 =
-)3 04/17/19 =
0 :ANG 1 NE-
10 0 10 20
SCALE: 1 " = 10'
DUKE
ENERGY.
400 S. TRYON STREET
PO BOX 1007
CHARLOTTE N.C. 28201-1007
TELEPHONE NO. [phone]

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FLEXIBLE
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FILTER FA
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TEMPORARY
'_ED OUTLET)
APPF -• " "Tr
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TOP 01
SEDIMENT REMOVAL DEVICE
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TEMPORARY STABILIZED OUTLET SECTION
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FLOW + 1'
N)
3AG/STONE (CLASS A)
NOTE 8) TEMPORARY
FLEXIBLE HOSE
AREA
FLOW
IMPERVIOUS DIKE
(SEE NOTE 8)
4-
0
7-
7
MPERVIOUS MEMBRANE
TYPE 2
IMPERVIOUS DIKE DETAIL
DEWATERING PUMP
SEDIMENT REMOVAL DEVICE
(SEE DETAIL, THIS SHEET)
NOTES:
1. SEDIMENT FILTER BAG FABRIC SHALL BE GEOTEXTILE MANUFACTURED FROM WOVEN POLYPROPYLENE OR POLYMER MATERIAL.
SEDIMENT FILTER BAG FABRIC MAY BE MADE FROM RECYCLED POLYMER MATERIALS. POLYMER MATERIALS SHALL NOT CONTAIN
BIODEGRADABLE FILLER MATERIALS AND SHALL CONFORM TO THE REQUIREMENTS IN ASTM DESIGNATION: E 204
2. SEDIMENT FILTER BAG FABRIC SHALL CONFORM TO THE FOLLOWING REQUIREMENTS:
3. THE SEDIMENT FILTER BAG SHALL BE 10'X12'X1.5' (MIN) AND SHALL BE COMPLETE WITH LIFTING LOOPS AND DUMP STRAPS
ATTACHED AT THE BOTTOM TO FACILITATE EMPTYING OF THE SEDIMENT FILTER BAG.
4. LIFTING STRAPS, SHOULD BE PLACED UNDER THE DEWATERING SEDIMENT FILTER BAG TO FACILITATE REMOVAL AFTER USE.
5. PLACE THE DEWATERING SEDIMENT FILTER BAG ON A LEVEL STABILIZED AREA OVER DENSE VEGETATION/STRAW, OR GRAVEL
(IF INCREASED DRAINAGE SURFACE AREA IS NEEDED).
6. INSERT DISCHARGE HOSE FROM PUMP INTO THE DEWATERING SEDIMENT FILTER BAG A MINIMUM OF SIX INCHES (6") AND
TIGHTLY SECURE WITH ATTACHED STRAP TO PREVENT WATER FROM FLOWING OUT OF THE UNIT WITHOUT BEING FILTERED.
7. REPLACE THE UNIT WHEN ONE HALF (1/2) FULL OF SEDIMENT OR WHEN SEDIMENT HAS REDUCED THE FLOW RATE OF THE
PUMP DISCHARGE TO AN IMPRACTICAL RATE.
8. REMOVE THE UNIT AND SEDIMENT FROM ENVIRONMENTALLY SENSITIVE AREA AND WATERWAYS. AT THE APPROVED DISPOSAL
SITE OPEN OR SLIT THE UNIT, REMOVE SEDIMENT AND GRADE SMOOTHLY INTO EXISTING TOPOGRAPHY. DISPOSE OF THE
DEWATERING SEDIMENT FILTER BAG, AT AN APPROPRIATE RECYCLING OR SOLID WASTE FACILITY.
DEWATERING SEDIMENT FILTER BAG
NOT TO SCALE
CLEAN WATER PUMP -AROUND PUMP
TEMPORARY FLEXIBLE HOSE
EXISTING CHANNEL
IMPERVIOUS DIKE
(SEE DETAIL, THIS
SHEET)
TEMPORARY STABILIZED
OUTLET
(SEE DETAIL THIS SHEET)
PUMP AROUND DETAIL 2
NOT TO SCALE
IN vANWAMA
GENERAL NOTES:
1. ALL CHANNEL WORK INVOLVING EXCAVATION SHALL BE PERFORMED
IN DRY CONDITIONS OR IN CHANNEL SECTIONS ISOLATED BY
IMPERVIOUS DIKES AND KEPT DE -WATERED.
2. THE CONTRACTOR SHALL NOT DISTURB MORE AREA THAN CAN BE
STABILIZED THE SAME WORKING DAY.
3. PUMP -AROUND PUMP AND HOSE SHALL ADEQUATELY CONVEY
BASEFLOW (APPROX. 1 CFS). DE -WATERING PUMP SHALL
ADEQUATELY DE -WATER THE WORKING AREA AT THE DOWNSTREAM
IMPERVIOUS DIKE.
4. GRAVITY -BASED GEOTEXTILE BAG FILTERS SHALL BE USED TO
COLLECT SILT AND SEDIMENT FROM WORK AREA DEWATERING.
THE DESIGNER MAY SPECIFY A SEDIMENT BASIN OR OTHER
SEDIMENT CONTROL MEASURE IN LIEU OF A SEDIMENT BAG IF SITE
CONDITIONS ARE FAVORABLE (I.E. - TREES WILL NOT BE IMPACTED
FOR BASIN EXCAVATION, ETC.).
5. EFFLUENT FROM CLEAN WATER PUMP AROUND MAY BE
DISCHARGED DIRECTLY INTO STABILIZED OUTLET (NO SEDIMENT
REMOVAL DEVICE REQUIRED).
6. A STABILIZED OUTLET SHALL BE USED TO CONTROL THE EFFLUENT
FROM ALL PUMPING OPERATIONS. THE DESIGNER SHALL SPECIFY
ALL MATERIALS AND DIMENSIONS ASSOCIATED WITH STABILIZED
OUTLETS.
7. FILTER FABRIC AS SPECIFIED BY THE DESIGNER SHALL BE USED
UNDERNEATH ALL STONE/RIP RAP PLACED FOR SEDIMENT BAGS,
STABILIZED OUTLETS, SPLASH PADS.
8. IMPERVIOUS DIKES SHALL BE CONSTRUCTED TO ISOLATE THE
IN -STREAM WORKING AREA. AN IMPERVIOUS FABRIC MEMBRANE
AND SAND BAGS OR STONE, AS SPECIFIED BY THE DESIGNER,
SHALL BE USED TO CREATE THE DIKES.
9. THE WORK SEQUENCE IN PUMP -AROUND OPERATIONS PROCEEDS
TYPICALLY AS FOLLOWS:
A. INSTALL SEDIMENT REMOVAL DEVICE AND TEMPORARY
STABILIZED OUTLETS AT THE DOWNSTREAM END OF WORKING
AREA.
B. INSTALL PUMP -AROUND PUMP AND FLEXIBLE HOSE.
C. INSTALL UPSTREAM IMPERVIOUS DIKE AND BEGIN PUMPING
(CLEAN WATER) DOWNSTREAM TO STABILIZED OUTLET.
D. INSTALL DOWNSTREAM IMPERVIOUS DIKE AND DE -WATERING
PUMP.
E. PERFORM CHANNEL WORK IN ACCORDANCE WITH THE PLANS IN
THE WORKING AREA.
F. DE -WATER THE WORKING AREA (AS NEEDED) INTO THE
SEDIMENT REMOVAL DEVICE AND TEMPORARY STABILIZED
OUTLET.
G. UPON COMPLETION OF WORK, REMOVE ANY SEDIMENT
ACCUMULATION BEHIND IMPERVIOUS DIKES.
H. REMOVE DOWNSTREAM AND THEN UPSTREAM DIKES AND ALL
PUMPS AND HOSE.
I. SEED AND MULCH ALL DISTURBED AREAS PER THE PLANTING
PLAN.
MINIMUM 10
GAUGE LINE
WIRES
Mm
1�L'TAILS
SILT FENCE. SEE DETAIL 3 THIS SHEET
NCDOT CLASS A RIP RAP
V-6" HIGH
4'
STEEL POST
(1.33 LB/LIN FT STEEL -
5 FT MIN LENGTH)
F
/j 8' MAX. SPACING
INSTALL HARDWARE -
CLOTH TO SUPPORT
STONE AT OUTLETS.
9" MAX I
(RECOMMENDED) 18"
STORAGE HEIGHT
24"
DESIGN
TYPE
DRAINAGE AREA
(APPROX.)
Specification
1/4
Requirements
Grab tensile strength
Silt Fenny
(one inch grip), pounds, minimum
in each direction
255
ASTM Designation:
D
4632 or appropriate test method
for specific polymer
Elongation, percent,
minimum in each direction
X -Machine Direction
15
ASTM Designation:
D
4632 or appropriate test method
for specific polymer
Permittivity£ ASTM( D 4401 sec -1
Permittivity, 1/sec.,
minimum
Apparent opening Si'ze2 ASTM! D 4751 mm
1.5
ASTM Designation:
D
4491
(30)
If°
Ultraviolet Stabiiliity ASTM D 4355 Retained
Flow rate, gallons per
minute per square foot, minimum
Strength
200
ASTM Designation:
D
4491
Ultraviolet stability,
percent
tensile strength retained after 500 hours, minimum
80
ASTM Designation:
D
4355 (xenon-erc lamp and water
spray weathering method)
3. THE SEDIMENT FILTER BAG SHALL BE 10'X12'X1.5' (MIN) AND SHALL BE COMPLETE WITH LIFTING LOOPS AND DUMP STRAPS
ATTACHED AT THE BOTTOM TO FACILITATE EMPTYING OF THE SEDIMENT FILTER BAG.
4. LIFTING STRAPS, SHOULD BE PLACED UNDER THE DEWATERING SEDIMENT FILTER BAG TO FACILITATE REMOVAL AFTER USE.
5. PLACE THE DEWATERING SEDIMENT FILTER BAG ON A LEVEL STABILIZED AREA OVER DENSE VEGETATION/STRAW, OR GRAVEL
(IF INCREASED DRAINAGE SURFACE AREA IS NEEDED).
6. INSERT DISCHARGE HOSE FROM PUMP INTO THE DEWATERING SEDIMENT FILTER BAG A MINIMUM OF SIX INCHES (6") AND
TIGHTLY SECURE WITH ATTACHED STRAP TO PREVENT WATER FROM FLOWING OUT OF THE UNIT WITHOUT BEING FILTERED.
7. REPLACE THE UNIT WHEN ONE HALF (1/2) FULL OF SEDIMENT OR WHEN SEDIMENT HAS REDUCED THE FLOW RATE OF THE
PUMP DISCHARGE TO AN IMPRACTICAL RATE.
8. REMOVE THE UNIT AND SEDIMENT FROM ENVIRONMENTALLY SENSITIVE AREA AND WATERWAYS. AT THE APPROVED DISPOSAL
SITE OPEN OR SLIT THE UNIT, REMOVE SEDIMENT AND GRADE SMOOTHLY INTO EXISTING TOPOGRAPHY. DISPOSE OF THE
DEWATERING SEDIMENT FILTER BAG, AT AN APPROPRIATE RECYCLING OR SOLID WASTE FACILITY.
DEWATERING SEDIMENT FILTER BAG
NOT TO SCALE
CLEAN WATER PUMP -AROUND PUMP
TEMPORARY FLEXIBLE HOSE
EXISTING CHANNEL
IMPERVIOUS DIKE
(SEE DETAIL, THIS
SHEET)
TEMPORARY STABILIZED
OUTLET
(SEE DETAIL THIS SHEET)
PUMP AROUND DETAIL 2
NOT TO SCALE
IN vANWAMA
GENERAL NOTES:
1. ALL CHANNEL WORK INVOLVING EXCAVATION SHALL BE PERFORMED
IN DRY CONDITIONS OR IN CHANNEL SECTIONS ISOLATED BY
IMPERVIOUS DIKES AND KEPT DE -WATERED.
2. THE CONTRACTOR SHALL NOT DISTURB MORE AREA THAN CAN BE
STABILIZED THE SAME WORKING DAY.
3. PUMP -AROUND PUMP AND HOSE SHALL ADEQUATELY CONVEY
BASEFLOW (APPROX. 1 CFS). DE -WATERING PUMP SHALL
ADEQUATELY DE -WATER THE WORKING AREA AT THE DOWNSTREAM
IMPERVIOUS DIKE.
4. GRAVITY -BASED GEOTEXTILE BAG FILTERS SHALL BE USED TO
COLLECT SILT AND SEDIMENT FROM WORK AREA DEWATERING.
THE DESIGNER MAY SPECIFY A SEDIMENT BASIN OR OTHER
SEDIMENT CONTROL MEASURE IN LIEU OF A SEDIMENT BAG IF SITE
CONDITIONS ARE FAVORABLE (I.E. - TREES WILL NOT BE IMPACTED
FOR BASIN EXCAVATION, ETC.).
5. EFFLUENT FROM CLEAN WATER PUMP AROUND MAY BE
DISCHARGED DIRECTLY INTO STABILIZED OUTLET (NO SEDIMENT
REMOVAL DEVICE REQUIRED).
6. A STABILIZED OUTLET SHALL BE USED TO CONTROL THE EFFLUENT
FROM ALL PUMPING OPERATIONS. THE DESIGNER SHALL SPECIFY
ALL MATERIALS AND DIMENSIONS ASSOCIATED WITH STABILIZED
OUTLETS.
7. FILTER FABRIC AS SPECIFIED BY THE DESIGNER SHALL BE USED
UNDERNEATH ALL STONE/RIP RAP PLACED FOR SEDIMENT BAGS,
STABILIZED OUTLETS, SPLASH PADS.
8. IMPERVIOUS DIKES SHALL BE CONSTRUCTED TO ISOLATE THE
IN -STREAM WORKING AREA. AN IMPERVIOUS FABRIC MEMBRANE
AND SAND BAGS OR STONE, AS SPECIFIED BY THE DESIGNER,
SHALL BE USED TO CREATE THE DIKES.
9. THE WORK SEQUENCE IN PUMP -AROUND OPERATIONS PROCEEDS
TYPICALLY AS FOLLOWS:
A. INSTALL SEDIMENT REMOVAL DEVICE AND TEMPORARY
STABILIZED OUTLETS AT THE DOWNSTREAM END OF WORKING
AREA.
B. INSTALL PUMP -AROUND PUMP AND FLEXIBLE HOSE.
C. INSTALL UPSTREAM IMPERVIOUS DIKE AND BEGIN PUMPING
(CLEAN WATER) DOWNSTREAM TO STABILIZED OUTLET.
D. INSTALL DOWNSTREAM IMPERVIOUS DIKE AND DE -WATERING
PUMP.
E. PERFORM CHANNEL WORK IN ACCORDANCE WITH THE PLANS IN
THE WORKING AREA.
F. DE -WATER THE WORKING AREA (AS NEEDED) INTO THE
SEDIMENT REMOVAL DEVICE AND TEMPORARY STABILIZED
OUTLET.
G. UPON COMPLETION OF WORK, REMOVE ANY SEDIMENT
ACCUMULATION BEHIND IMPERVIOUS DIKES.
H. REMOVE DOWNSTREAM AND THEN UPSTREAM DIKES AND ALL
PUMPS AND HOSE.
I. SEED AND MULCH ALL DISTURBED AREAS PER THE PLANTING
PLAN.
MINIMUM 10
GAUGE LINE
WIRES
Mm
1�L'TAILS
SILT FENCE. SEE DETAIL 3 THIS SHEET
NCDOT CLASS A RIP RAP
V-6" HIGH
4'
STEEL POST
(1.33 LB/LIN FT STEEL -
5 FT MIN LENGTH)
F
/j 8' MAX. SPACING
INSTALL HARDWARE -
CLOTH TO SUPPORT
STONE AT OUTLETS.
9" MAX I
(RECOMMENDED) 18"
STORAGE HEIGHT
24"
DESIGN
TYPE
DRAINAGE AREA
(APPROX.)
WEIR LENGTH (L)
MIN.
1/4
1/2 ACRE
4.0 FT
SILT FENCE STONE OUTLET
NOT TO SCALE
Table 6.62b Specifications For Sediment Fence IFabric
HDR Engineering Inc.
of the Carolinas
ST
4 (1. )ST5 IN LE440 S. Church St. Suite 1000
Charlotte, NC 28202-2075
704.338.6700
SILT FENCE N.C.B.E.L.S. License Number
F-0116
-n
F_
O
1;-6" M
PONDING HEIGHT
STEEL POST
36 in. ABOVE GRADE
(MAX.)
RUNOFF
# 57 WASHED
ROCK SECTION DETAIL
TRENCH WITH GRAVEL
STQNE (8" THICK)
8" FABRIC TRENCH
Temporary Silt (Fence IMateriall
(Property Requirements
Supported'
Un -Supported' Type of
Test Material. Units
Silt Fenny
Silt Fancy Value
Grab Strength ASTM D 4632 N (Ibs)
Machine Direction
400
550 MARV
(00)
(90).
X -Machine Direction
400
450 MARV
(90)
(90)
Permittivity£ ASTM( D 4401 sec -1
0.05
0.05 MARV
Apparent opening Si'ze2 ASTM! D 4751 mm
0.60
0.60 Max. ARV'
(US Sieve #)
(30)
(30)
If°
Ultraviolet Stabiiliity ASTM D 4355 Retained
70%° atter
70°x° after
Typical
Strength
500h of exposure
500h of exposure
Siilt Fence support shalil consist of 14 gage steel wire with a mesh spacing of 150 mm (6 inches), or prefabricated poylmer mesh of
aquivallent strength.
These default values are based on empirical evidence with .a variety of sediment. Farr environmentally sensitive areas, .a reviewof
previous experience and/or site or re-gironallly specific geotextile tests in
accordance with Test Method D 5141 should be performled
by the agency to confirm suiitabilliity of these requirements.
As measured in accordance with Test Method D 4632.
89-099 MAXIMUM
FRONT VIEW
MINIMUM 12-1/2 GAUGE
INTERMEDIATE WIRES
0
N
TEMPORARY SILT FENCE DETAIL
NO TO SCALE
STEEL POST
(1.33 LB/LIN FT STEEL -
5 FT MIN LENGTH)
WOVEN WIRE FABRIC
SILT FENCE FABRIC
FILL SLOPE
5' MIN GRADE
TRENCH IN SILT FENCE
8" DOWN AND 4"
FORWARD ALONG TRENCH.
COMPACT THOROUGHLY
AFTER PLACEMENT.
SIDE VIEW
'')YE 'T 6 Off' 7
r 25548 J
73 •; 04/17/19 • _
NOTE:
1. USE SILT FENCE ONLY WHEN
DRAINAGE AREA DOES NOT EXCEED
1/4 ACRE AND NEVER IN AREAS OF
CONCENTRATED FLOW.
2. SILT FENCE IS TO BE SECURELY
FASTENED TO EACH STEEL SUPPORT
POST OR TO WOVEN WIRE WHICH IS
IN TURN ATTACHED TO THE STEEL
FENCE POST.
3. INSPECT FREQUENTLY AND REPAIR OR
REPLACE PROMPTLY AS NEEDED.
4. REMOVE SEDIMENT DEPOSITED AS
NEEDED TO PROVIDE STORAGE
VOLUME FOR THE NEXT RAIN AND TO
REMOVE PRESSURE ON THE SILT
FENCE. UNIFORMLY DISTRIBUTE ON
THE SOURCE AREA PRIOR TO
TOPSOILING.
DUKE
E NERGY
400 S. TRYON STREET
PO BOX 1007
CHARLOTTE N.C. 28201-1007
TELEPHONE NO. [phone]
IIII.■■■■■■■■■■■■■IIIII�
110 74, ������ ���� ►���� ������
liPii' iii'
....... • • ..mswo..
FRONT VIEW
MINIMUM 12-1/2 GAUGE
INTERMEDIATE WIRES
0
N
TEMPORARY SILT FENCE DETAIL
NO TO SCALE
STEEL POST
(1.33 LB/LIN FT STEEL -
5 FT MIN LENGTH)
WOVEN WIRE FABRIC
SILT FENCE FABRIC
FILL SLOPE
5' MIN GRADE
TRENCH IN SILT FENCE
8" DOWN AND 4"
FORWARD ALONG TRENCH.
COMPACT THOROUGHLY
AFTER PLACEMENT.
SIDE VIEW
'')YE 'T 6 Off' 7
r 25548 J
73 •; 04/17/19 • _
NOTE:
1. USE SILT FENCE ONLY WHEN
DRAINAGE AREA DOES NOT EXCEED
1/4 ACRE AND NEVER IN AREAS OF
CONCENTRATED FLOW.
2. SILT FENCE IS TO BE SECURELY
FASTENED TO EACH STEEL SUPPORT
POST OR TO WOVEN WIRE WHICH IS
IN TURN ATTACHED TO THE STEEL
FENCE POST.
3. INSPECT FREQUENTLY AND REPAIR OR
REPLACE PROMPTLY AS NEEDED.
4. REMOVE SEDIMENT DEPOSITED AS
NEEDED TO PROVIDE STORAGE
VOLUME FOR THE NEXT RAIN AND TO
REMOVE PRESSURE ON THE SILT
FENCE. UNIFORMLY DISTRIBUTE ON
THE SOURCE AREA PRIOR TO
TOPSOILING.
DUKE
E NERGY
400 S. TRYON STREET
PO BOX 1007
CHARLOTTE N.C. 28201-1007
TELEPHONE NO. [phone]

DEFINITION
Controlling runoff and erosion on disturbed areas by establishing vegetative cover with seed.
PURPOSE
To reduce erosion and decrease sediment yield from disturbed areas, and o permanently stabilize
such areas in a manner that is economical, adapts to site conditions, and allows selection of the
most appropriate plant materials.
SPECIFICATIONS
SEEDBED REQUIREMENTS
Establishment of vegetation should not be attempted on sites that are unsuitable due to excessive
soil compaction, inappropriate soil texture, poor drainage, concentrated overland flow, or steepness of
slope until measures have been taken to correct these problems.
To maintain a good stand of vegetation, the soil must meet certain minimum requirements as a
growth medium. The existing soil should have these criteria:
• Enough fine—grained (silt and clay) material to maintain adequate moisture and nutrient supply
(available water capacity of at least .05 inches water to 1 inch of soil).
• Sufficient pore space to permit root penetration.
• Sufficient depth of soil to provide an adequate root zone. the depth to rock or impermeable
layers such as hardpans should be 12 inches or more, expect on slopes steeper than 2:1 where
the addition of soil is not feasible.
• A favorable pH range for plan growth, usually 6.0 — 6.5.
• Free from large roots, branches, stones, large clods of earth, or trash of any kind. Clods and
stones may be left on slopes steeper than 3:1 if they are to be hydro seeded.
If any of the above criteria are not met — i.e., if existing soil is too coarse, dense, shallow or
acidic to foster vegetation — special amendments are required. the soil conditioners described below
may be beneficial or, preferably, top soil may be applied.
SEEDBED PREPARATION
Install necessary mechanical erosion and sedimentation control practices before seeding, and complete
grading according to the approved plan.
Lime and fertilizer needs should be determined by soil tests. Direction, sample cartons, and
information sheets are available through county Agricultural Extension offices. Testing is also done by
commercial laboratories.
When soil test results are not available, follow rates suggested in the seeding specifications shown at
right. Application rates usually fall into the following ranges.
• Ground agricultural limestone:
Light—textured, sandy soils: 1 to 1-1/2 tons/acre
Heavy—textured, clayey soils: 2 — 3 tons/acre
• Fertilizer:
Grasses: 800-1200 Ib/acre of 10-10-10 (or the equivalent)
Grass—legume mixtures: 800-1200 Ib/acre of 5-10-10 (or the equivalent)
Apply lime and fertilizer evenly and incorporate into the top 4-6 inches of soil by disking or other
suitable means. Operate machinery on the contour. When using a hydro seeder, apply lime and
fertilizer to a rough, loose surface.
Roughen surfaces prior to seeding.
Complete seedbed preparation by breaking up large clods and raking into a smooth, uniform surface
(slopes less than 3:1). Fill in or level depressions that can collect water. Broadcast seed into a
freshly loosened seedbed that has not been sealed by rainfall.
SEEDING
Seeding dates given in the seeding mixture specification are designated as "best" or "possible".
Seedings properly carried out within the "best" dates have a high probability of success. It is also
possible to have satisfactory establishment when seeding outside these dates. However, as you
deviate from them, the probability of failure increases rapidly. Seeding on the last date shown under
"possible" may reduce changes of success by 30-50%. Always take this into account in scheduling
land—disturbing activities.
Use certified seed for permanent seeding whenever possible.
Labeling of—non—certified seed is also required by law. Labels contain important information on seed
purity, germination, and presence of wood seeds. Seeds must meet State standards for content of
noxious weeds. Do not accept seed containing "prohibited" noxious weed seed.
Inoculate legume seed with rhizobium bacteria appropriate to the species of legume. Apply seed
uniformly with a cyclone seeder, drop—type spreader, drill, cultipacker seeder, or hydro seeder on
firm, friable seedbed.
When using a drill or cultipacker seeder, plant small grains no more than 1 inch deep, grasses and
legumes no more than 1/2 inch. Equipment should be calibrated in the field for the desires seeding
rate.
When using broadcast—seeding methods, subdivide the area into workable sections and determine the
amount of seed needed for each section. Apply one—half the seed while moving back and forth
across the area, making a uniform pattern: then apply the second half in the some way, but moving
at right angles to the first pass.
Mulch all plantings immediately after seeding.
HYDRO SEEDING
surface roughening is particularly important when hydro seeding, as a roughened slope will provide
some natural coverage for lime, fertilizer, and seed. The surface should not be compacted or
smooth. Fine seedbed preparation is not necessary for hydro seeding operations: large clods, stones,
and irregularities provide cavities in which seeds can lodge.
Rate wood fiber (cellulose) application should be at least 2,000 Ib/acre.
Apply legume inoculants at four times the recommended rate when adding inoculant to a hydro
seeder slurry.
If a machinery breakdown of 1/2 to 2 hours occurs, add 50% more seed to the tank, based on the
proportion of the slurry remaining. This should compensate for damage seed. Beyond 2 hours, a full
rate of new seed may be necessary.
Lime is not normally applied with a hydraulic seeder because it is abrasive. It can be blown onto
steep slopes in dry form.
MAINTENANCE
Generally, a stand of vegetation cannot be determined to by fully established until soil cover has
been maintained for one full year from planting. Inspect seeded areas for failure and make necessary
repairs and reseedings within the same season, if possible.
Reseeding --If a stand has inadequate cover, re—evaluate choice of plant materials and quantities of
lime and fertilizer. Re—establish the stand after seedbed preparation or over—seed the stand.
Consider seeding temporary, annual species if the time of year is not appropriate for permanent
seeding.
If vegetation fails to grow, soil must be tested to determine if acidity or nutrient imbalance is
responsible.
Fertilization --On the typical disturbed site, full establishment usually requires re—fertilization in the
second growing season. Fine turf requires annual maintenance fertilization. Use soil tests if possible
or follow the guidelines given for the specific seeding mixture.
TEMPORARY SEEDING SPECIFICATIONS
Seeding mixture (fall)
Species* Rate (Ib/acre
Rye Grain (Secale cereale) 120
Seeding Mixute (late winter early spring
Species* Rate (Ib/acre
Rye Grain (Secale cereale) 120
Seeding Mixture (summed
Species* Rate (Ib/acre
German Millet (Setaria italica) 40
Seeding dates (Piedmont)
Fall: Aug. 15 — Dec. 30
Late winter (early spring): Jan. 1 — May 1 Late
Summer: May 1 — Aug. 15
Soil amendments
Follow recommendations of soil tests or apply 2,000 Ib/acre ground agricultural limestone and 750
Ib/acre 10-10-10 fertilizer.
GENERAL SEEDING SPECIFICATIONS
NO TO SCALE
,III� AV A
_DE77A ILS"
Mulch
Apply 4,000 Ib/acre straw. Anchor mulch by tacking with asphalt, roving or a mulch anchoring tool.
A dish with blades set nearly straight can be used as a mulch anchoring tool.
Maintenance
Re—fertilize if growth is not fully adequate. reseed, re—fertilize and mulch immediately following
erosion or other damage.
Pursuant to G.S. 113A-57(2), the angle for graded slopes and fills shall be no greater than the
angle that can be retained by vegetative cover or other adequate erosion—control devices or
structures. In any event, 3H:1V or greater slopes left exposed will within 7 calendar days of
completion of any phase of grading, be planted or otherwise provided with temporary or permanent
ground cover, devices, or structures sufficient to restrain erosion.
Pursuant to G.S. 113A-57(3). Provisions for permanent groundcover sufficient to retrain erosion must
be accomplished for all disturbed areas within 14 working days following completion of construction
or development.
*REF: 6.10 A, B and C, NC Erosion and Sediment Control Planning and Design Manual, 2006
PERMANENT SEEDING SPECIFICATIONS
NOTE:
DO NOT APPLY FERTILIZER IN THE STREAM CHANNEL
STABILIZATION REQUIREMENTS:
Stabilization for this project shall comply with the time frame guidelines as specified by the
NCG-010000 general construction permit effective August 3, 2011 issued by the North Carolina
Department of Environmental Quality Division of Water Resources. Temporary or permanent ground
cover stabilization shall occur within 7 calendar days from the last land—disturbing activity, with
the following exceptions in which temporary or permanent ground cover shall be provided in 14
calendar days from the last land—disturbing activity:
Slopes between 2:1 and 3:1, with a slope length of 10 ft. or less
Slopes 3:1 or flatter, with a slope of length of 50 ft. or less
Slopes 4:1 or flatter
The stabilization timeframe for High Quality Water (HQW) Zones shall be 7 calendar days with
no exceptions for slope grades or lengths. High Quality Water Zones (HQW) Zones are defined
by North Carolina Administrative Code 15A NCAC 04A.0105 (25). Temporary and permanent
ground cover stabilization shall be achieved in accordance with the provisions in this contract
and as directed.
NATIVE GRASS SEEDING AND MULCHING: (West)
Native Grass Seeding and Mulching shall be performed on the disturbed areas of wetlands and
riparian areas, and adjacent to Stream Relocation and/or trout stream construction within a 50
foot zone on both sides of the stream or depression, measured from top of stream bank or center
of depression. The stream bank of the stream relocation shall be seeded by a method that does
not alter the typical cross section of the stream bank. Native Grass Seeding and Mulching shall
also be performed in the permanent soil reinforcement mat section of preformed scour holes, and
in other areas as directed.
The kinds of seed and fertilizer, and the rates of application of seed, fertilizer, and limestone,
shall be as stated below. During periods of overlapping dates, the kind of seed to be used shall
be determined. All rates are in pounds per acre.
August 1 — June 1 May 1 — September 1
18# Creeping Red Fescue 18# Creeping Red Fescue
8# Big Bluestem 8# Big Bluestem
6# Indiangrass 6# Indiangrass
4# Switchgrass 4# Switchgrass
35# Rye Grain 25# German or Browntop Millet
500# Fertilizer 500# Fertilizer
4000# Limestone 4000 Limestone
Approved Creeping Red Fescue Cultivars:
Aberdeen Boreal Epic Cindy Lou
Fertilizer shall be 10-20-20 analysis. A different analysis of fertilizer may be used provided the
1-2-2 ratio is maintained and the rate of application adjusted to provide the same amount of plant
food as a 10-20-20 analysis and as directed.
Temporary Seeding
Fertilizer shall be the some analysis as specified for Seeding and Mulching and applied at the rate
of 400 pounds and seeded at the rate of 50 pounds per acre. German Millet or Browntop Millet
shall be used in summer months and rye grain during the remainder of the year. The Engineer
will determine the exact dates for using each kind of seed.
Fertilizer Topdressing
Fertilizer used for topdressing shall be 16-8-8 grade and shall be applied at the rate of 500
pounds per acre. A different analysis of fertilizer may be used provided the 2-1-1 ratio is
maintained and the rate of application adjusted to provide the same amount of plant food as 16-88
analysis and as directed.
Supplemental Seeding
The kinds of seed and proportions shall be the same as specified for Seeding and Mulching, and
the rate of application may vary from 25# to 75# per acre. The actual rate per acre will be
determined prior to the time of topdressing and the Contractor will be notified in writing of the
rate per acre, total quantity needed, and areas on which to apply the supplemental seed.
Minimum tillage equipment, consisting of a sod seeder shall be used for incorporating seed into
the soil as to prevent disturbance of existing vegetation. A clodbuster (ball and chain) may be
used where degree of slope prevents the use of a sod seeder.
Mowing
The minimum mowing height shall be 6 inches.
7 OF 7
In
0
I.
' 25548 J'
3 04/17/1911 0
=
F
11"11111111000%
1nnn11110
HDR Engineering Inc.
of the Carolinas
440 S. Church St. Suite 1000
Charlotte, NC 28202-2075
704.338.6700
N.C.B.E.L.S. License Number
F-0116
DUKE
ENERGY
400 S. TRYON STREET
PO BOX 1007
CHARLOTTE N.C. 28201-1007
TELEPHONE NO. [phone]
S11E_ET,-00D-02

DWR
DF4bn M Wtl , Rmuttn