NCC211892_ESC Approval Submitted_20210329

September 22, 2020
BBC Blackstone, LLC
21000 Torrence Chapel Road, Suite 100
Cornelius, NC 28031

RE: LETTER OF APPROVAL WITH MODIFICATIONS
Project Name: Blackstone Bay
Case Number: ECPR-02-2020-33801
Disturbed Area: 34 acres
Submitted By: Kimley Horn
Date Received: September 17, 2020
New Submittal Revision X

Dear Mr. Bailey:

This office has reviewed the subject erosion and sedimentation control plan. We find the
plan to be acceptable and hereby issue this Letter of Approval with Modifications. The
Erosion Control Permit must be posted at the job site. 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 (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. After submittal of a complete and
correct NOI Form, a COC will be emailed to you within three business days.

Title 15 NCAC 4B .0018(a) requires that a copy of the approved erosion control plan,
NCG01 permit and COC, and records of inspections made be on file at the job site. Also,
this letter gives the notice required by G.S. 113A-61.1(a) of our right of periodic inspection
to insure 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, the erosion and sedimentation control plan is inadequate
to meet the requirements of the Sedimentation Pollution Control Act of 1973 (North
Carolina General Statue 113A- 51 through 66), this office may require revision to the plan
and implementation of the revisions to insure 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 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/Ownership Form that you have provided. You are
requested to file an amended form if there is any change in the information included on
the form.
Please ensure the approved plans and permit are picked up from the Government
Center, see address above. In addition, please notify this office of the proposed
start date for this project and to schedule a preconstruction conference.

Your cooperation is appreciated.

Sincerely,
Toni Norton, P.E., LEED A.P., CPESC
Water Resources Engineer

Cc: File
Kimley Horn
NC DEMLR

MODIFICATIONS
Please submit Plan Checklist, Erosion Control Permit Application, and project narrative.
Erosion Control Phase I, Sheet C2-4
• Additional erosion control measures (i.e. diversion ditch) needed at top of
Skimmer Sediment Basin A eastern slope
• Additional erosion control measures needed at toe of Sediment Basin B
southern slope
• Size skimmer orifice in ¼” increments in Sediment Basin B
Erosion Control Phase II, Sheet C2-9
• Additional erosion control measures needed at toe of slopes at end of Steel
Way
• Label lift station contours

Erosion Control Phase II, Sheet C2-10
• Additional erosion control measures needed at toe of slopes at end of Steel
Way
• Label proposed contours
Erosion Control Details, Sheet C6-3
• Sediment basin requires 3 baffles, please revise
• Please revise Sediment Basin B skimmer design to ¼” increments