SWA000146_Add Info_20220525

ROY COOPER
Governor
ELIZABETH S. BISER
Secretary
BRIAN WRENN
Director
NORTH CAROLINA
Environmental Quality
May 25, 2022
Oak View at Siler City, LLC
Attn: Jennifer Lampman, VP of Development
160 W. Main Street, #200
New Albany, OH 43054
AND
Mc2 Engineering, Inc.
Attn: Jeff McCluskey, PE
2110 Ben Craig Drive, Suite 400
Charlotte, NC 28262
Subject: Request for Additional Information
Stormwater Authorization to Construct (ATC) Permit No. SWA000146
Oak View at Siler City
Chatham County
Dear Mrs. Lampman and Mr. McCluskey:
The Division of Energy, Mineral and Land Resources (DEMLR), received a Stormwater
Management Authorization to Construct (ATC) Permit Application for the subject project on
May 11, 2022. A review of that information has determined that the application is not complete.
The following information is needed to continue the stormwater review:
As designed, this project does not meet the design requirements for a project to be
considered as low -density (due to the inclusion of the piping network). Please either
revise the Application (Part E1) to indicate that this is a high -density project (and will be
designed to meet all of the high -density design requirements) or revise the design to meet
all of the low -density design requirements. NOTE: Keeping the percent BUA for the
project area under the 24% limit is only one of the low -density requirements, all of the
low -density requirements outlined in 15A NCAC 02H .1003(2) must be met in order for
a project to be considered a low -density project. The following low -density design
criteria have not been met with this design:
a. 15A NCAC 02H .1003(2)(b) —The proposed piping network does not
demonstrate that the project was designed in a manner to maximize dispersed
flow and minimize the channelization of flow since most all of the stormwater
North Carolina Department of Environmental Quality I Division of Energy, Mineral and Land Resources
512 North Salisbury Street 1 1612 Mail Service Center I Raleigh, North Carolina 27699-1612
NORTH CAROLINA _
oepm nt of EnvimnmwUl uwl ry 919.707.9200

runoff is directed towards and collected in the proposed pipe network. It is noted
that local ordinances require stormwater management for this project, however,
the site can be designed in a manner to maximize dispersed flow by eliminating
the inlets/pipe system and better utilizing the available space (If the limits of
disturbance were used to determine the project density instead of the property
area, this project would obviously be a high -density project since all of the
development is concentrated in a single area within the property).
b. 15A NCAC 02H .1003(2)(c) —Piping is allowed on low -density projects in
situations where it cannot be avoided (such as utilizing culverts for sump roadway
crossings) however, the provided pipe network is excessive, avoidable, and
incompatible with the low -density design criteria.
2. Please correct the following issues with the Application Form:
a. Part E4 — There appears to be an issue with the receiving water information. Per
the Surface Water Classification Map
(https://ncdenr.maps.arcgis.com/apps/webgppviewer/index.html?id=6e l25ad7628
f494694e259c80dd64265), his project appears to drain to just the Rocky River,
17-43-(8). Please revise as needed.
3. Provide PDFs of all revisions, 2 hardcopies of revised plan sheets, 1 hardcopy of other
documents, and a response to comments letter briefly describing how the comments have
been addressed.
a. PDFs must be uploaded using the form at:
https:.//edocs.deq.nc.gov/Forms/SW-Supplemental-Upload
b. Hard copies must be mailed or delivered to the following address:
i. For FedEx/UPS:
Jim Farkas
512 N. Salisbury Street, Office 640E
Raleigh, NC 27604
ii. For LISPS:
Jim Farkas
1612 Mail Service Center
Raleigh, NC 27699-1612
iii. Hand Delivery:
Please reach out to me prior to hand delivering a submission to make
sure that I (or someone else in my group) will be able to receive the
submission. Do not leave the package in the foyer with the
security guard.

NOTE: Hard copies should not be sent to a Regional Office. Doing so
will delay the review process and the submission package may be lost
while being sent from the Regional Office to me in the Central Office.
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 June 25, 2022, 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 SWA000146 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
[e-mail] or [phone].
Sincerely,
✓_ vl
Jim Farkas
Environmental Engineer
Stormwater Program
cc: Raleigh Regional Office