NCC215556_ESC Approval Submitted_20211007

Iredell County Planning & Development
Erosion Control Section
349 North Center Street
P.O. Box 788
Statesville, NC 28687
Date: October 4"' 2021
LETTER OF APPROVAL WITH MODIFICATIONS
George Bartley Carroll
DR Horton Inc.
8025 Arrowridge BIvd
Charlotte, NC 28273
RE: Project Name: Calvin Creek
Acres Approved: 89
Project ID: TRTMN-2020-087
Project Location: PIN 4740090982.000
Submitted By: ESP Associates, Inc.
Date Received: April 13" 2020
Plan Type: Transfer of Financial Responsible Ownership
Dear Mr. Carroll:
This office has reviewed the subject erosion and sedimentation control plan. We find the plan to
be acceptable with modifications and herby issue this Letter of Approval with Modifications.
Modifications must be received in this office no later than two weeks prior to the project start
date. Failure to submit modified plans can result in a violation and fine under the Iredell County
Land Development Code. The Modifications required for Approval are listed on the attached
page. The Certificate of Approval issued by Iredell County must be posted at the job site. This
plan approval shall expire three (3) years following the date of this approval as is required by
Title 15A NCAC 413.0129 and Appendix H of the Iredell County Land Development Code.
Title 15A NCAC 4B 0118(a) and Appendix H of the Iredell County Land Development Code
requires that a copy of the approved erosion control plan be on file at the job site. Any
amendments and/or revisions to the approved plan must be reviewed and approved prior to
implementation in order for the site to remain in compliance. Failure to submit plans for approval
may result in administrative actions and/or penalties as indicated in the Iredell County Land
Development Code. Also, this letter gives notice as required by G.S. I I3A-61.1(a) and Appendix
H of the Iredell County Land Development Code, of our right of periodic inspection to insure
compliance with the approved plan.
Iredell County's Sedimentation Pollution Control Program is performance -oriented, requiring
protection of existing natural resources and adjoining properties. If, following the

Letter of Approval with Modifications
Calvin Creek
October 4`t' 2021
Page 2 of
commencement of this project, it is determined that the erosion and sedimentation control plan is
inadequate to meet the requirements of the Iredell County Land Development Code and the
Sedimentation Pollution Control Act of 1973, (North Carolina General Statute I I3A-51 through
66), this office may require revisions to the plan and implementation of the revisions to insure
compliance with the Act and Code.
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. It is the responsibility of the applicant to obtain all other required permits or
approvals.
As of May 1, 2019, all new construction activities are required to complete and submit an
electronic Notice of Intent (NOI) form requesting a Certificate of Coverage (COC) under the
NCG010000 Construction Stormwater General Permit. This form MUST be submitted prior to
the commencement of any land disturbing activity on the above named project. The NOI form
may be accessed at deq.nc.gov/NCG01. Please direct questions about the NOI form to Annette
Lucas at [e-mail] or Paul Clark at [e-mail]. After you submit a
complete and correct NOI Form, a COC will be emailed to you within three business days.
Initially, DEMLR will not charge a fee for coverage under the NCGOI permit. However, on or
after May 1, 2019, a $100 fee will be charged annually. This fee is to be sent to the DEMLR
Stormwater Central Office staff in Raleigh.
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 form. In addition, it is required that this
office to be notified of the proposed starting date for this project. Failure to notify this office of
the starting date may result in a Notice of Violation and civil penalty. Please notify us when you
plan to have a preconstruction conference.
Your cooperation is appreciated.
Sincerely,
Jonathan Williams
Erosion Control Inspector II
Enclosures: Modifications
Fact Sheet on the New NCGO1 Permit

Letter of Approval with Modifications
Calvin Creek
October 41h 2021
Page 3 of 3
MODIFICATIONS REQUIRED FOR APPROVAL
Project Name: Calvin Creek
Project ID: TRTMN-2020-087
County: Iredell
Reviewed by: Randall Moore
Original Approval: May 15"' 2020
c
Required changes are designated as "RC" under legal authority from NC
General Statutes Chapter 113A Article 4 and the Iredell County Land
Development Code.
Suggested changes are designated as "SC" for improvement of the plan.
1. No more than 20-25 acres disturbed at one time. Construction sequence needs to be
detailed to account for this requirement. -RC
2. All basins need diversions and berms to direct runoff to slope drains for runoff entering
basins. -RC
3. Turn silt fence up at basin outlets, extend PVC pipe outlet from basins to limits of
disturbance so treated water discharges outside of disturbed area. -RC
4. All basin outlets should merge over stream buffer, not intersect perpendicularly. -RC
5. Skimmer Basin 8 is in a poor Iocation, needs to be adjusted. Cannot have treated runoff
discharging in the middle of the disturbed area. -RC
6. Wrap all downslope sides of stockpiles with silt fence. Stockpiles shall be located a
minimum of 50 feet from diversions and basins. -RC
7. Slopes greater than 10 feet in height shall be terraced per NC Sediment and Erosion
Control Planning & Design Manual. -RC
8. Slopes greater than 10 feet in height need more protection than silt fence. -RC
9. Silt fence shall be 10 feet off toe of slopes. -RC
10. Diversions are to remain in place to carry runoff to basins until areas draining to basins
are stabilized. -RC
11. Lots to be graded to drain to the road. Not over rear slopes. -RC
12. SB-2 surface area too small, needs 45,059 feet squared. -RC
13. SK-3A skimmer orifice could go to 2.25". -SC
14. SK-8 skimmer orifice could go to 1.5". -SC
15. SK-10 skimmer orifice could increase in size by ' inch. -SC
16. Provide basin calculations for basins receiving increased runoff in Phase 2 of the plan,
once inlets and piping are installed. -RC