SW6201001_Add Info_20201029

ROY COOPER
Governor
MICHAEL S. REGAN
Secretary
BRIAN WRENN
Director
C. Scott Brown, PE
409 Chicago Drive, Suite 112
Fayetteville, NC 28306
NORTH CAROLINA
Environmental Quality
October 29, 2020
Subject: Request for Additional Information
Stormwater Permit No. SW6201001
Evelyn Estates Subdivision
Cumberland County
Dear Mr. Brown:
The Division of Energy, Mineral and Land Resources (DEMLR), received a Stormwater
Management Permit Application for the subject project on October 1, 2020. A review of that
information has determined that the application is not complete. The following information is
needed to continue the stormwater review:
Based on the proposed design, the project appears to be a mixture of high -density and
low -density development. While it is true that the project meets the letter of the law with
regard to low -density requirements, the intent of the law is not met. For example, lots 2-9
& 13-19 are approximately 20,000 sf in size and are allocated approximately 10,000 sf of
BUA resulting in a %BUA of about 50%, significantly higher than the low -density
maximum %BUA of 24%. The project essentially contains two areas, lot 10 (with
a %BUA of about 2%) and the remainder of the project (with a %BUA of about 47%).
Per 15A NCAC 02H .1003(1)(d), the Division may determine that a project contains both
high -density and low -density areas. Please do one of the following to address this:
a. Reduce the amount of BUA allocated per lot so that the entire project more
closely meets the intent of low -density development. The deed restriction
document will need to be revised and resubmitted (with original signature).
b. Redistribute the amount of BUA allocated to the lots proportionately based on lot
size. The deed restriction document will need to be revised and resubmitted (with
original signature).
c. Design the high -density portion of the project area to meet all applicable high -
density requirements. Most items in the submittal (Application, plans,
supplemental forms, calcs, etc...) will need to be revised and resubmitted.
DNorth Carolina Department of Environmental Quality I Division of Energy, Mineral and Land Resources
EQ
_ 512 North Salisbury Street 11612 Mail Service Center I Raleigh, North Carolina 27699-1612
NORTH CAROLINA
Department oiEnvironmental aum� 0 ` 919.707.9200

2. There is a BUA discrepancy between the Application and the low -density
supplement/deed restriction document. The low -density supplement & deed restriction
document indicate that the allocated BUA per lot is 10,157 sf. Since there are 19 lots, this
results in an on -site BUA allocated to lots of 192,983 sf. The number in Section IV, 10 of
the Application should match this number (192,991 sf is incorrectly shown).
3. Please correct the following issues with the low -density supplement form:
a. Please provide the "Vaji,," value for the proposed swales. This value is the
maximum allowable velocity that the swale can safely handle before eroding (Part
III).
b. Please initial the provided items on the Required Item Checklist (Part IV).
c. Item d of the Required Items Checklist — This item is required.
d. Item j of the Required Items Checklist — This item is required since swale 3 is
discharging to a wetland area. Please also ensure that swale 3 is discharging to the
wetland area at a non -erosive velocity (<= 2 fps).
e. Items k & 1 of the Required Items Checklist — Please show the bottom width of
the swales on the swale detail. Please also specify the type of vegetation to be
used.
4. Please provide the following information to supplement the provided calculations:
a. Rainfall data showing where the intensities used in the swale calculations came
from.
b. A swale drainage area map showing the drainage area size, BUA within the
drainage area, and the times of concentration so that the swale calculations can be
verified (This does not need to be included in the main set of plans).
5. Please identify the individual who made the wetland determination on the plans (Section
VI, 8m).
6. Provide pdfs of all revisions, 2 hardcopies of revised plan sheets, and 1 hardcopy of other
documents.
a. Pdfs must be uploaded using the form at:
https://edocs.deq.nc.gov/Forms/SW—Project Submittal
b. Hard copies must be mailed or delivered to the following address:
Jim Farkas
512 N. Salisbury Street
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 November 28, 2020, 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 SW6201001 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,
Jim Farkas
Environmental Engineer
Stormwater Program
cc: Fayetteville Regional Office