SWA000056_AddInfoRequest_20191003

ROY COOPER
Governor
MICHAEL S. REGAN
Secretary
S. DANIEL SMITH
Director
Brian V. Crutchfield
Timmons Group
610 East Morehead Street, Suite 250
Charlotte, NC 28202
NORTH CAROLINA
Environmental Quality
October 3, 2019
Subject: Request for Additional Information
Stormwater Permit No. SWA000056
Training Area Shelter for Union County Sheriffs Office
Union County
Dear Mr. Crutchfield:
The Division of Energy, Mineral and Land Resources (DEMLR), received a Fast Track
Authorization to Construct (ATC) Permit Application for the subject project on September 4,
2019. A review of that information has determined that the application is not complete. The
following information is needed to continue the stormwater review:
1. This site was previously permitted under SW3160203. Is this Fast Track ATC intended to
cover the same built upon area (BUA) and stormwater system permitted under
SW3160203 or is this project an addition to what was constructed under SW3160203?
2. Please update the application to address the following deficiencies:
a. Section C, Part 1 of the application lists the application as replacing a previous
Fast Track ATC. The previous permit was permitted under the standard process
and is not a Fast Track ATC. Therefore, the project shall be considered a major
modification to the existing permit.
b. Section C, Part 3 of the application lists the existing permit, SW3160203, as an
NPDES Industrial Stormwater permit. The existing permit is a post -construction
permit, not an industrial permit. Please remove this from this section.
c. Section D, Part 1 requires the name and title of the signing official for Union
County. Please add this information and their contact information.
d. Section E:
i. Please provide a brief description of how stormwater will be handled on
the site (Part 2).
ii. Please provide the drainage basin that the project drains to. The
appropriate drainage basin can be found using our Watershed Drainage
Area Map (Part 3).
D EQ �� North Carolina Department of Environmental Quality Division of Energy, Mineral and Land Resources
512 North Salisbury Street 1 1612 Mail Service Center Raleigh, North Carolina 27699-1612
NORTH CAROLINA
Depadm.mofEnmmnm.maaualfty /� 919.707.9200

iii. Please provide the receiving water information (Part 4). This information
can be found using our Waterbody Classification Map.
iv. Please update Part 5 to include the following information:
1. The total surface water area. The submitted plans show surface
waters on site but no surface water is listed on the application.
2. The application lists the existing BUA as 85,720 sf. Is this BUA
associated with the previous permit (SW3160203) or is this BUA
that existed when the previous permit was issued? Any BUA
constructed under SW3160203 does not meet the definition of
existing BUA and cannot be excluded from the density
calculations.
3. The project density is defined as the total built upon area divided
by the project area, not the property area. Based on the provided
project area of 172,062 sf, this project would not meet the low
density threshold of 24%.
v. If the development permitted by SW3160203 has been completed, a
designer's certification is required as part of the application.
3. Please note that the Division does not perform a complete technical review for Fast Track
ATC applications. However, as a courtesy, I performed a cursory review of the plans and
it is my opinion that when constructed this project will not meet the low density
requirements to minimize the use of piping. Piping is permitted on low density
developments only for erosion control or culverts under roads and driveways. Connecting
to an existing collection system does not meet the intent of the low density regulations to
prevent concentration of stormwater flows. I would strongly encourage that the design of
the stormwater system is reconsidered prior to construction.
4. Provide pdfs of all revisions, 2 hardcopies of revised plan sheets, and 1 hardcopy of other
documents. Pdfs must be uploaded using the form at:
https:Hedocs.deq.nc.gov/Forms/SW ProjectSubmittal
Please note that this request for additional information is in response to a preliminary review.
The requested information should be received by this Office prior to November 2, 2019, or
the application will be returned as incomplete. The return of a project will necessitate
resubmittal of all required items, including the application fee. Please reference the State
assigned project number SWA000056 on all correspondence.
If you need additional time to submit the information, please submit your request for a time
extension to the Division at the contact below. The request must indicate the date by which you
expect to submit the required information. The Division is allowed 90 days from the receipt of
a completed application to issue the permit.
The construction of any impervious surfaces, other than a construction entrance under an
approved Sedimentation Erosion Control Plan, is a violation of NCGS 143-215.1 and is subject
to enforcement action pursuant to NCGS 143-215.6A.

If you have any questions concerning this matter please feel free to contact me at
Corey.Anen&ncdenr.gov or [phone].
Sincerely,
Corey Anen
Environmental Engineer
Stormwater Program
cc: Mooresville Regional Office