HomeMy WebLinkAboutSW6210503_Add Info_20210607ROY COOPER
Governor
DIONNE DELLI-GATTI
Secretary
BRIAN WRENN
Director
C. Scott Brown, PE
409 Chicago Drive, Suite 112
Fayetteville, NC 28306
NORTH CAROLINA
Environmental Quality
June 7, 2021
Subject: Request for Additional Information
Stormwater Permit No. SW6210503
Townsend Estates Subdivision
Hoke County
Dear Mr. Brown:
The Division of Energy, Mineral and Land Resources (DEMLR), received a Stormwater
Management Permit Application for the subject project on May 3, 2021. A review of that
information has determined that the application is not complete. The following information is
needed to continue the stormwater review:
1. The project site appears to be located on the left-handed side of Townsend Road when
approaching from Rockfish Road (Section I, 3). Please revise.
2. Based on the provided USGS topo map, there appears to be a surface water located on the
property, behind lots 29 & 30. Please include the surface area of this surface water
(Section IV, 6), recalculate the project area (Section IV, 7), recalculate the percent
impervious area (Section IV, 8), show the surface water & surface area of the surface
water in the main set of plans (Section VI, 8h), and show the required vegetated setback
from the surface water in the main set of plans (Section VI, 8p).
3. The percent impervious area for drainage area 1 does not appear to be calculated
correctly (Section IV, 10). Please revise.
4. The provided deed restriction documents are for a low -density project whereas this
project is a high -density project. Please provide high -density deed restriction documents
(Section VI, 2 & Section VII).
5. Please ensure that the BUA, both existing and proposed, is dimensioned and the surface
areas are called out in the main set of plans (Section VI, 8j). The areas used in the
Application and the Supplement-EZ Form should be able to be verified from the plan set.
D E Q�� 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 OAROLINA _
Depar ntofEnvimnmmdlDoellry 919.707.9200
6. Please delineate the drainage area to the proposed wet pond in the main set of plans
(Section VI, 8o).
7. Since the permittee is the property owner, Section IX is not required. Please revise the
electronic file to remove the signature from this section.
8. Please ensure that the stomwater maintenance access and easements are shown in the
main set of plans (General MDC 8 & 9).
9. Please include a note on the plans stating that the vegetated shelf must be planted with a
minimum of three different species at a minimum density of 50 plants per 200 sf of shelf
area (Wet Pond MDC 1 lb). Please also list the surface area of the vegetated shelf and
minimum number of plants to be planted on the vegetated shelf. It is recommended to
included a landscape/planting plan (not just a detail) for the wet pond showing the type,
number, and location of the plants that will be planted on the vegetated shelf.
10. Please do not include the sediment storage zone (below elevation 201) in the stage -
storage tables for the main pool and forebay. These sediment storage zones are provided
in addition to, not as part of, the main pool and forebay.
11. Please provide the cross -sectional areas of the main pool and forebay at the permanent
pool elevation (205.5). Please also ensure to include the cross-section at the permanent
pool elevation in the temporary storage stage -storage tables.
12. The SA/DA table value appears to be too small. Please ensure that you are using the
correct table value. The SA/DA table can be found in Part C-3 of the Stormwater Design
Manual.
13. Please correct the following issues with the Supplement-EZ Form:
a. Cover Page:
i. Lines 2 & 4 — Please include the surface water area and adjust the project
area per earlier comments.
ii. Line 7-9 — Please answer/include these items.
b. Drainage Areas Page:
i. General:
1. The surface area of the proposed wet pond does not need to be
counted as impervious area.
ii. Entire Site Column:
The entire site column should be an accounting of the entire site,
not just the drainage area to the proposed SCM. If there is
proposed BUA that will be constructed within the project area but
will not drain to the proposed SCM, it should be reflected in this
column (in addition to the on -site BUA within the SCM drainage
area). The "drainage area" for this column is the project area and
should match the information in the Application (as should the %
BUA).
2. Lines 19-21 are not required for this column.
c. Wet Pond Page:
i. Line 12 — This item is required. Please ensure the drainage easement
complies with General MDC 9.
ii. Line 26 — This value is the cross -sectional area of only the main pool (not
the entire wet pond) at the permanent pool elevation. Please revise as
needed.
iii. Lines 27, 28, & 32 — Revise as needed per earlier comment.
14. 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:
hgps://edocs.deq.nc.gov/Forms/SW Project Submittal
b. Hard copies must be mailed or delivered to the following address:
i. For FedEx/UPS:
Suzanne McCoy
512 N. Salisbury Street, Office 640K
Raleigh, NC 27604
ii. For USPS:
Suzanne McCoy
1612 Mail Service Center
Raleigh, NC 27699-1612
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 July 7, 2021, 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 SW6210503 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
Jim.Farkas@ncdenr.gov or (919) 707-3646.
Sincerely,
)6W4�
Jim Farkas
Environmental Engineer
Stormwater Program
cc: Fayetteville Regional Office