NCC241307_ESC Approval Submitted_20240507

ROY COOPER
Governor �
ELIZABETH S.BISER
Secretary j
� 4
BRIAN WRENN
Director :, t-,a
Environmental Quality
May 12, 2022
LETTER OF APPROVAL WITH MODIFICATIONS
City of Hickory
Attention: Warren Wood, City Manager
76 North Center Street
Hickory,North Carolina 28601
RE: Project Name: Trivium East Corporate Center Sewers
Acres Approved: 3.84
Project ID: CATAW-2022-011
County: Catawba, City: Hickory
Address: Startown Road
River Basin: Catawba
Stream Classification: Other
Submitted By: Todd Gingerich, PE, Civil & Environmental Consultants, Inc.
Date Received by LQS: April 28, 2022
Plan Type: Revised
Dear Mr. Wood:
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 (eNOI) form requesting a Certificate of Coverage (COC) under the NCG010000 Construction General
Permit. After the foiiii 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/NCG01. Please direct questions about the eNOI form to the Stonnwater 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 NCGO1 permit require that the following documentation be kept on file
at the job site:
North Carolina Department of Environmental Quality I Division of Energy,Mineral and Land Resources
ill Mooresville Regional Office 610 East Center Avenue,Suite 301 I Mooresville,North Carolina 28115
704-663-1699

Letter of Approval with Modifications
City of Hickory
May 12, 2022
Page 2 of 3
1. The approved E&SC plan as well as any approved deviation.
2. The NCG01 peiluit 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 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 file an amended font' 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,
Shannon Leonard
Assistant Regional Engineer
Land Quality Section
Enclosures: Certificate of Approval
Modifications Required for Approval
NCGOI Fact Sheet
c: Inspection Department
ec: Todd Gingerich, PE

Letter of Approval with Modifications
City of Hickory
May 12, 2022
Page 3 of 3
MODIFICATIONS REQUIRED FOR APPROVAL
Project Name: Trivium East Corporate Center Sewers
Project ID: CATAW-2022-011
County: Catawba
1. The construction sequence for stream crossings shall be followed (attached). Also, the coffer dam
shall have a minimum 3' top crest width.
2. Positive drainage must be provided for "clean water diversions." In addition, these diversions shall
be lined with sod or rip-rap immediately upon installation.
3. Temporary culverts shall be extended as necessary so that disturbed area does not flow into pipes.
4. Stone outlets shall be installed in low-lying areas of silt fence.
5. The attached permanent seeding specifications shall be followed.

Construction Sequence for Stream Crossing
1. Install pump and line to pump flow from area upstream of temporary stream crossing to
area downstream of construction area. Begin pumping and continuing pumping while
working within stream.
2. Install upstream coffer dam, filter fabric and sandbags.
3. Install downstream coffer dam and/or rock filter and filter fabric to prevent back flow
into construction area.
4. Install dewatering basin or silt bag at top of bank. Dewater construction area between
coffer dams using pump to stilling basin or silt bag.
5. Conduct line installation.
6. Upon construction completion, stabilize stream work area, remove downstream coffer
dam, remove upstream coffer dam and remove pumping equipment.

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