NCC241584_ESC Approval Submitted_20240523

ROY COOPER
Governor
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ELIZABETH S. BISER s!‘.
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Srcreri)r� N,qu.s.,.,n'.
WILLIAM E.TOBY VINSON.JR NORTH CAROLINA
/nrerrm DirectorEnvironmental Quality
October 18, 2023
LETTER OF APPROVAL WITH MODIFICATIONS
Niblock Homes, LLC
Attention: William T. Niblock, Member
759 Concord Parkway N, suite 20
Concord. North Carolina 28027
RE: Project Name: Cordera
Project ID: CABAR-2024-017
Acres Approved: 20.7
County: Cabarrus
City: Concord
Location: Burrage Road
River Basin: Yadkin-PeeDee
Stream Classification: Other
Submitted By: Yarbrough-Williams& Houle. Inc.
Date Received by LQS: September 19, 2023
Plan Type: New
Dear Mr. Niblock:
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 I5A NCAC 4B .0129.
As of April 1. 2019, all new construction activities are required to complete and submit an electronic
Notice of Intent(eNOI) 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 permit 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/NCGOI. Please direct questions about
the eNOI form to the Stormwater 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.
Title 15A NCAC 4B .0118(a) and the NCGOI permit require that the following documentation be kept on
file at the job site:
Qv�.
Noah Carolina t)epanutent of tan itouutemal()win!, Unisum of Energy.M1linerd,and Land Resources
hlooresvdle Regional Office 610 Last Center Avenue,Suite inl Moores‘ Nonh Carolina 28115

Letter of Approval with Modifications
Niblock Homes, LLC
October 18, 2023 •
Page 2 of 3
1. The approved E&SC plan as well as any approved deviation.
2. The NCGOI 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.l(a)of our right of periodic inspection to
ensure compliance with the approved plan.
North Carolina's Sedimentation Pollution Control Act is performance-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 tile an amended form if there is any
change in the information included on the form. In addition, it would be helpful if you notify this office of
the proposed starting date for this project.
Your cooperation is appreciated.
Sincerely.
Mena Awad, PE
Assistant Regional Engineer
Land Quality Section
MA
Enclosure: Certificate of Approval
Modifications Required for Approval
NCGOI Fact Sheet
c: Yarbrough-Williams& Houle, Inc.
Attention: Vincent G. Keene. PE& William K. Davis
730 Windsor Oak Court
Charlotte,North Carolina 28273
D E 0'4 Mooresville
Carolina Department of Environmental()twiny Dix iswn of Energy.Mineral,and Land Resources
oore;ville Regional Office 610 East Center Avenue,Store+01 Nelourem dle.North Carolina 28115
osrd` /- '04-663-I699

Letter of Approval with Modifications
Niblock Homes, LLC
October 18, 2023
Page 3 of 3
MODIFICATIONS REQUIRED FOR APPROVAL
Project Name: Cordera
Project ID: CABAR-2024-017
County: Cabarrus
Reviewed by: Mena Awad, PE
I- It appears that the Sediment Basin# 1 does not meet the design manual. It is not clear if the riser was designed
to act as an emergency spillway and a principal spillway at same time or not. It is recommended to show an
emergency spillway on the design of the sediment basin. Additionally,the drainage area shown on the plans
does not match the drainage area that was used on the calculations. However,the basin should be designed
based on the maximum drainage area thought the construction phases. Redesign the basin and revise your plans
accordingly to reflect these comments. Lastly the size of the basin on the plans must match the calculations
sheet and table 6.61 on sheet 29(Detail Sheet#4).
2- For Skimmer Basin#4. It appears that the storage area measured at same elevation of the top of bank.The
storage area should be measured at the spillway elevation. Additionally,there is only 1 foot between the bottom
of basin to the emergency spillway.The minimum depth should be 2 feet from the bottom of basin to the
spillway. Lastly the size of the basin on the plans must match the calculations sheet and table 6.64 on sheet 29
(Detail Sheet#4). Submit revised plans reflecting those corrections.
3- provide very detailed sequencing for the rough grading phase to clearly explain the transition between Phase 1
and the grading phase. Cleary show how the removing of Basin#3 will be taken place during the construction,
and when the storm sewer system will be installed. Additionally, include the till slopes in the construction
sequence.
4- Silt fence alone is not adequate below till slopes in excess of 10 feet in height(NC Erosion and Sediment
Control Planning and Design Manual, Section 6.62). Provide additional measures for the fill areas at the
wetland area and the west side of the site. Matting of the slopes is recommended. [G.S. 113A-57(3)]
5- Include this comment on the construction plans.: Approval by a representative of the Land Quality Section will
be required prior to removal of erosion control measures and/or conversion of the sediment basin(s)to post-
construction stormwater SCMs.
6- Additional measures may be required-The applicant is responsible for the control of sediment on-site. If the
approved erosion and sedimentation control measures prove insufficient, the applicant must take those
additional steps necessary to stop sediment from leaving this site. [15A NCAC 4B .0115]
7- This letter constitutes approval with modifications. For inspection purposes,two copies of revised plans
reflecting these modifications must be delivered to this office by November I'or two weeks prior to the
beginning of work, whichever date is earlier. [15A NCAC 4B .0107(c)]
Ret': G.S. 113A-54.1 through G.S. 113A-57
Sections 15A NCAC 04A.0 101 through 15A NCAC 04E.0504
General Permit NCG 010000 NPDES for Construction Activities
' E Q�/A North Carolina Department of Ensironment:l Oualitt Division nl Energy,Mineral.and I.and Resources
�, •✓ Mooresville Regional Office 610 East Center.\venue.Suite 30I Mooresville.North Carolina 28115

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