AddInfoRequest SW1180801

Energy, Mineral
and Land Resources
ENVIRONMENTAL QUALITY
August 17, 2018
Michael D Lovoy, PE
Advantage Civil Engineering
34 Big Bear Trail
Asheville, NC 28805
Subject: Request for Additional Information
Stormwater Permit No. SW1180801
The Cottages at Stone Creek — Mills River, NC
Henderson County
Dear Mr. Lovoy:
ROY COOPER
Governor
MICHAEL S. REGAN
Secretary
WILLIAM E. TOBY VINSON, JR.
Interim Director
The Division of Energy, Mineral and Land Resources (DEMLR), received a Stormwater
Management Permit Application for the subject project on August 3, 2018. A review of that
information has determined that the application is not complete. The following information is
needed to continue the stormwater review:
1. Please upload electronic copies of the plans and supporting documents at the following
link: https:Hedocs.deq.nc.gov/Forms/SW_Project_ Submittal.
2. The low density regulations only allow for a minimal amount of piping for driveways,
culverts under roads, and erosion protection. The proposed development contains a
significant amount of piping that does not meet this standard.
3. The low density regulations require that all side slopes on vegetated conveyances be no
greater than 3:1.
4. Please submit a completed low density residential deed restriction form and a low density
supplemental form. The forms can be found at the following link:
hgps:Hdeg.nc. gov/about/divisions/energy-mineral-land-resources/energy-mineral-land-
rules/stormwater-pro rg am/post-construction.
5. Please submit engineering calculations showing that the swales will be non -erosive
during the peak flow from the 10-year storm.
6. We recommend using trapezoidal cross sections for swales as they tend to have lower
flow velocities and establish vegetation more easily.

7. 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:
hqps:Hedocs.deg.nc.gov/Forins/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 September 16, 2018, 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 SW1180801 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
ec: Brian Kirk — Moore & Son Site Contractors
Nothing Compares.
State of North Carolina I Environmental Quality I Energy, Mineral and Land Resources
512 N. Salisbury Street 1 1612 Mai Service Center I Raleigh, NorthCaroiina27699-1612
919 707 9200