SW6230103_Response To Comments_20231106

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ROY COOPER '/'. I Dr'
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ELIZABETH S.BISER ` �_='
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Secretary Eur vunnvmE°�*
WILLIAM E.TOBY VINSON,JR NORTH CAROLINA
Interim Director Environmental Quality
October 23, 2023
Averette Engineering Co,. P.A.
Attn: Michael Averette, PE 712 E.
Lake Ridge Road Raleigh, NC
28376
AND
Rheibeck Investments, LLC
Attn: Geoff Becker, Owner/Manager 3727
Legion Road
Hope Mills,NC 28348
Subject: Request for Additional Information
Stormwater Permit No. SW6230103
Carter Farms Subdivision — Phase 1
Hoke County
Dear Mr. Averette and Mr. Becker:
The Division of Energy, Mineral and Land Resources (DEMLR), received a Stormwater Management
Permit Application for the subject project on July 27, 2023. A review of that information has
determined that the application is not complete. The following information is needed to continue the
stormwater review:
1. Project Area
a. Please clearly delineate the project area on a plan sheet. This is the area that is included as
the "drainage area" on a low density project. The Cover Sheet and the Drainage Area Map
sheet indicate a Phase 1 Project Area of 18.4 acres, but the Supplement-EZ and Application
reference 10 acres. The delineated project area is important because per the site area
delineated in the Stormwater Impact Analysis, there is no surface water on-site. However, if
the total property area shown on sheet C-2 is the project area, the provided USGS
topographic map indicates there is a stream located within the total property area. If this is
the case, clearly show these surface waters on the plans (Section VI, 8 h and 15A NCAC
02H
.1042(2)(g)(iii)) and show the required vegetated setbacks from these surface waters
(Section VI, 8p, 15A NCAC 02H .1042(2)(g)(iii), 15A NCAC 02H
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.1003(4), and 15A NCAC 02H .1017(10)). If the project area is 18.4 acres,please
also include the surface water area in Section IV, 6 of the Application
(recalculating Section IV, 7 & 8 as needed) and Line 4 on the Cover Page of the
Supplement-EZ Form(recalculating Lines 2 & 7 on the Cover Page and Lines 5,
6, & 18 on the Drainage Areas Page of the Supplement-EZ Form as needed).
NOTE: the surface water areas should be subtracted from the project area on the
Application and Supplement-EZ.
The Project area is 10 ac for Phase 1. The overall property is area is 34.48 ac. The
impervious calculations on the Cover sheet has been updated to only include Phase
1. We are currently only permitting Phase 1 in the with the stormwater permit. The
18.4 ac drainage area is the overall drainage area to the PC #1 channel. This area
includes on-site and off-site drainage area. We will include the additional area on
future submittals for the remainder of the property. This portion will also be
submitted as a low density development.
2. Curb Outlet Swales
a. Per 15A NCAC 2H .1003(2)(d) (iii), the swale's cross-section shall be trapezoidal
with a minimum bottom width of 2 two feet. PC#2 is a curb outlet swale, and the
plans list the bottom with as "0 ft."Revise the plans, calculations, and Supplement-
EZ as necessary.
The plans have been updated to match the calculations and the rule requirements.
The channel was designed as a 4 foot bottom but the plan table was not updated.
See Sheets C7 & 9
3. Supplement-EZ
Ix hard copy of the complete, original Supplement-EZ Form is required per Sections V& VI, 3
of the Application
a. Low Density, Line 5: This item should match the highest velocity provided in the
swale table below.
The velocity has been updated to match the table below for a 10-yr storm.
b. Low Density, Line 12: Per 15A NCAC 02H .1003(4)(e), stormwater runoff that has
not been treated in an SCM shall not be discharged through a vegetated setback, it
must be released at the edge of the vegetated setback and allowed to flow through the
setback as dispersed flow. Therefore, this must be answered as "Yes."
Yes has been selected.
Low Density, Swale Table: The Q, V , and Flow Depth are for the 10-year storm
C. actual
as this item is intended to verify compliance with 15A NCAC 2H .1003(2)(c)(ii) and
15A NCAC 2H .1003(2)(d)(i). Please revise to reflect the 10-year storm and provide
calculations for the 10-year storm that correspond to the values provided in the table.
The calculations have been updated to the 10-yr storm for flow and velocity. Please
note the flow has been calculated with a time of concentration due to flow length.
2. 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:
b.i.For FedEx/UPS:
Brianna Holland

512 N. Salisbury Street, Office 640E
Raleigh,NC 27604
b.ii.For USPS:
Brianna Holland
1612 Mail Service Center
Raleigh, NC 27699-1612
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 November 22, 2023,
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 SW6230103 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(919) 707-9218.
Sincerely,
66.„,frto._ e
Brianna Holland
State Stormwater Engineer
DEMLR Post-Construction Stormwater Program
cc: Fayetteville Regional Office