NCC231802_ESC Approval Submitted_20230629

ROY COOPER �r"' a
Governor ,$
ELIZABETH S. BISER 4'
Secretary %`�' �
DOUGLAS R.ANSEL Q Wt
Interim Director NORTH CAROLINA
Environmental Quality
May 26, 2023
LETTER OF APPROVAL WITH MODIFICATIONS
Duke Energy Carolinas, LLC
Attention: David Dellario, G.M.C.W. CCP Projects
526 South Church Street, ECI-05A
Charlotte,North Carolina 28202
RE: Project Name: Stormwater Channel for Foiuier Ash Storage Area
Acres Approved: 5.67
Project ID: CLEVE-2023-037
County: Cleveland, City: Mooresboro
Address: Duke Power Road
River Basin: Broad
Stream Classification: Other
Submitted By: Christopher Mettler, PE, ERM NC, Inc.
Date Received by LQS: April 27, 2023
Plan Type: New
Dear Mr. Dellario:
This office has reviewed the subject erosion and sedimentation control plan. We find the plan to be acceptable
with modifications and hereby issue this letter of Approval with Modifications. The Modifications Required for
Approval are listed on the attached page. This plan approval shall expire three (3) years following the date of
approval, if no land-disturbing activity has been undertaken, as is required by Title 15A NCAC 4B .0129.
As of April 1, 2019, all new construction activities are required to complete and submit an electronic Notice of
Intent (eNOl) form requesting a Certificate of Coverage (COC) under the NCG010000 Construction General
Permit. After the form is reviewed and found to be complete,you will receive a link with payment instructions
for the $100 annual peunit fee. After the fee is processed, you will receive the COC via email. As the
Financially Responsible Party shown on the FRO form submitted for this project, you MUST obtain the COC
prior to commencement of any land disturbing activity. The eNOI form may be accessed
at deq.nc.gov/NCG01. Please direct questions about the eNOI faun to the Stouliwater Program staff in the
Raleigh central office. If the owner/operator of this project changes in the future, the new responsible
party must obtain a new COC.
North Carolina Department of Environmental Quality I Division of Energy,Mineral and Land Resources
Mooresville Regional Office 1610 East Center Avenue,Suite 301 I Mooresville,North Carolina 28115
704-663-1699

Letter of Approval with Modifications
Duke Energy Carolinas, LLC
May 26,2023
Page 2 of 3
Title 15A NCAC 4B .0118(a) and the NCGO1 permit require that the following documentation be kept on file
at the job site:
1. The approved E&SC plan as well as any approved deviation.
2. The NCGO1 permit and the COC, once it is received.
3. Records of inspections made during the previous 30 days.
Also, this letter gives the notice required by G.S. 113A-61.1(a) of our right of periodic inspection to ensure
compliance with the approved plan.
North Carolina's Sedimentation Pollution Control Act is perfoiuiance-oriented,requiring protection of existing
natural resources and adjoining properties. If, following the commencement of this project, it is determined that
the erosion and sedimentation control plan is inadequate to meet the requirements of the Sedimentation Pollution
Control Act of 1973 (North Carolina General Statute 113A-51 through 66), this office may require revisions to
the plan and implementation of the revisions to ensure compliance with the Act.
Acceptance and approval of this plan is conditioned upon your compliance with Federal and State water quality
laws, regulations, and rules. In addition, local city or county ordinances or rules may also apply to this land-
disturbing activity. This approval does not supersede any other permit or approval.
Please note that this approval is based in part on the accuracy of the information provided in the Financial
Responsibility Form, which you provided. You are requested to file an amended form if there is any change in
the information included on the foiiu. In addition, it would be helpful if you notified this office of the proposed
starting date for this project.
Your cooperation is appreciated.
Sincerely,
Shannon Leonard
Assistant Regional Engineer
Land Quality Section
Enclosures: Certificate of Approval
Modifications Required for Approval
NCG01 Fact Sheet
c: Inspection Department
ec: Christopher Mettler, PE

Letter of Approval with Modifications
Duke Energy Carolinas, LLC
May 26, 2023
Page 3 of 3
MODIFICATIONS REQUIRED FOR APPROVAL
Project Name: Stormwater Channel for Former Ash Storage Area
Project ID: CLEVE-2023-037
County: Cleveland
1. Provide any necessary 401/404 approval permits for proposed stream impacts to the Broad River. Copies
of approvals shall be submitted to this office prior to the start of land disturbance activities. If approvals
are not required, provide documentation from the Regulating Authority that permits are not required.
2. Compost Filter Socks shall be installed along the top edge of the rip-rap channel (both sides) to contain
sediment from upland slopes until an adequate permanent ground cover has been established.
3. The attached temporary and permanent seeding specifications shall be followed. If native grasses are
desired,specifications from the NC E&SC Planning and Design Manual shall be followed. Table 6.11.c for
grass species selection and Table 6.11.d for application rates.
4. Steel posts shall be used for silt fence installation.

Table 6.10a
Temporary Seeding Seeding mixture
Recommendations for Late Species Rata(lblaae)
Winter and Early Spring Rye(grain) 120
Annual lespedeza(Kobe in
Piedmont and Coastal Plain,
Korean in Mountains) 50
Omit annual lespedeza whin duration of temporary cover is not to extend
beyond June.
Seeding dates
Mountains—Above 2500 ft:Feb.15-May 15
Below 2500 ft:Feb.1-May 1
Piedmont—Jan.1-May 1
Coastal Plain—Dec.1-Apr.15
Soil amendments
Follow recommendations of soil tests or apply 2,000 lb/acre ground agricul-
aural limestone and 750 lb/acre 10-t0.10 fertilizer.
Mulch
Apply 4,000 lb/acre straw.Anchor straw by tacking with asphalt,netting,
• or a mulch anchoring tool,A disk with blades set nearly straight can be
used as a mulch anchoring tool.
Maintenance
Refertilize if growth is not fully adequate.Reseed.ref utilize and mulch im-
mediately following erosion or other damage.
Table 6.10b
Temporary Seeding Seeding mixture
Recommendations for Species Rate(lb/acre)
Summer German millet 40
In the Piedmont and Mountains,a small-stemmed Sudangrass may be
substituted at a rate of 50 lb/acre.
Seeding dates
Mountains—May 15-Aug.15
Piedmont—May t-Aug.15
Coastal Plain—Apr.15-Aug.15
Soil amendments
Follow recommendations of soil tests or apply 2,000 Ihrecre ground agricul-
tural limestone and 750 lb/acre 10-10-10 fertilizer.
Mulch
Apply 4,000 lb/acre straw.Anchor straw by tacking with asphalt,netting,
or a mulch anchoring tool.A disk with blades set nearly straight can be
used as a mulch anchoring tool.
Maintenance
Ref ertilize if growth is not fully adequate.Reseed,relertitize and mulch im-
mediately following erosion or other damage.
Table 6.10c
Temporary Seeding Seeding mixture
Recommendations for Fall Species Rate(lb/acre)
Rye(grain) 120
Seeding dates
Mountains—Aug.15-Dec.15
Coastal Plain and Piedmont—Aug.15•Dec.30
Soli amendments
Follow soil tests or apply 2,000 lb/acre ground agricultural limestone and
1.000 lb/acre 10-10-10 fertilizer.
Mulch
Apply 4,000 lb/acre straw.Anchor straw by tacking with asphalt,netting,
or a mulch anchoring tool.A disk with blades set nearly straight can be
used as a mulch anchoring tool.
Maintenance
Repair and refertilize damaged areas immediately.Topdress with 50
lb/acre of nitrogen in March.tl it is necessary In extend temporary cover
beyond June 15,overseed with 50 Ib/acre Kobe(Piedmont and Coastal
Plain)or Korean(Mountains)lespedeza in late February or early March.

Practice Standards and Specifications
Table 6.11k
Seeding No.1P for:Steep Seeding mixture
Slopes or Poor Soils;Low Species Rate(lb/acre)
Maintenance Tall fescue 100
Serira lespedeza 30
Kobe lespedeza 10
Seeding notes
1.In Eastern Piedmont add 25 lb/acre Pensacola Bahiagrass or 101b/acre
common Barmudagrass.Use common Bermudagrass only where it is un-
likely to become a pest,
2.After Aug.15 use unscarifled sericea seed.
3.Where a neat appearance is desired,omit sericea and substitute 40
ib/acre Bahiagrass or 15 lb/acre Bermudagrass.
4.To extend spring seeding dates into June, add 15 lb/acre hulled Ber-
mudagrass.However,it is preferable to seed temporary cover and seed
fescue in Sept.
Nurse plants
Between May 1 and Aug.15,add 10 ibtacre German millet or 15 Ib/acre
Sudarlgrass.Prior to May 1 or after Aug,15,add 40 ib/acre rye(grain).
Seeding dates
Best Possible
Fall: Aug.25-Sept.15 Aug.20-Oct.25
Late winter: Feb»15-Mar.21 Feb.1-Apr.15
Fall is best for tail fescue and late winter for lespedezas.Overseeding of
Kobe lespedezaoverfali-seeded tall fescue is"very effective.Use urrhulled'
Bermudagrass seed in fall.
Soli amendments
Apply lime and fertilizer according to soil tests, or apply 4,000 lb/acre
ground agricultural limestone and 1,000 lb/acre f0-10-10fertilizer.
Mulch
Apply 4,000-5,000 lb/acre grain straw, or equivalent cover of another
suitable mulching material»Anchor mulch by tacking with asphalt,roving,
or netting.Netting is the preferred anchoring method on steep slopes.
Maintenance
Refertilize in the second year unless growth is fully adequate.;May be
mowed once or twice a year,but mowing is not necessary.Reseed,fertil-
ize,and mulch damaged areas immediately.
Refer to Appendix 8.02for botanical names,
6.11.19

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