SW3190806_Add Info_20200319

ROY COOPER
Governor
MICHAEL S. REGAN
Secretary
S. DANIEL SMITH
Director
Brian Rossi, PE
301 McCullough Drive, Suite 109
Charlotte, NC 28262
NORTH CAROLINA
Environmental Quality
March 19, 2020
Subject: Request for Additional Information
Stormwater Permit No. SWA000022
Courtyards at Emerald Lake
Union County
Dear Mr. Rossi:
The Division of Energy, Mineral and Land Resources (DEMLR), received a Stormwater
Management Permit Application for the subject project on February 19, 2020. 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 following comments were originally mentioned in the November 6t'', 2019 request for
additional information and have not been provided/addressed. To ensure all comments are
addressed during the next submission, please provide a point -by -point response to the comments
with the next submittal. Please correct the following issues with the Final Permit Submittal
Checklist and supporting documents:
a. Item I — Application Form SWU 101:
i. Section VI — Please initial these required items indicating that they have been
included in the application. You must initial (with a pen) these items. Your
initials indicate that you have included these items with the Application.
ii. Section VI, 2 — Please provide the original, notarized, deed restriction document.
Please provide the deed restrictions that limit the amount of BUA per lot that
were placed on these subdivided lots.
iii. Section VI,11 — Please provide documents showing that Mr. Kardos is affiliated
with Epcon Marvin, LLC. It is noted that the Applicant organization has been
changed to "EPCON Lawyers Road, LLC". Please provided documentation form
the NC Secretary of State indicating Mr. Kardos' affiliation with the Applicant
organization.
b. Item 2 — Supplement EZ Form:
i. Drainage Areas Sheet:
1. Please fill out the "Entire Site" column. The entire site column is not
necessarily just a summation of the two separate drainage areas. It is an
D EQ 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 _
o.PaWnamofEnvironmental Quality /� 919.707.9200

accounting of the BUA that is located within the property area. As such,
there are no off -site components (Lines 8 & 9) or design requirements
(Lines 17 — 19). Also, it is noted that the amount of BUA for the entire
site (On original design plan sheet C 3.1 is listed as 19.06 acres which is
significantly larger than the 465,144 sf (10.68 ac) reported. Please either
revise or describe this discrepancy.
2. Line 19 — Design volume should be the WQ volume, not the total volume
that can be stored above the permanent pool. Since this project is located
in the Goose Creek Watershed (15A NCAC 02B .0600), the WQ volume
needed for these SCMs is the difference between the pre -development
and post -development runoff from the 1-year storm. Please update the
calculations and forms as needed.
ii. Wet Pond Sheet:
1. Line 2 & 35 — Design volume should be the WQ volume, not the total
volume that can be stored above the permanent pool. See prior
clarification for the WQ volume.
2. Line 19 — The stage storage tables have only been provided for the
temporary storage areas and the forebay of BMP 3. Please provide As -
built stage storage table for the main pools and the forebay of BMP 1 &
2. Stage -storage tables must be provided for the main pool, and forebay to
ensure that they are adequately designed/sized per Wet Pond MDCs 1, 2,
& 5.
3. Line 27 — This value should be the volume of the permanent pool that is
not located in the forebay. Providing the stage -storage tables (As noted
above) will allow us to verify these values. Also, please provide the main
permanent pool volume for the drainage area 1 column.
4. Line 34 — Lines 20 & 21 indicate that the cleanout depth is 12 inches and
this line indicates that it is 6 inches. Please revise for consistency. Since
having initially issued this comment, I have received clarification that the
cleanout depth is the distance from the permanent pool elevation to the
top of the sediment storage ("Maximum Sediment Storage" on the as-
builts).
5. Line 42 — Berms and baffles do not appear to be provided. Berms and
baffles are additional design elements that are added to a wet pond that
increase the length of the flow path. It does not appear that either of these
design elements are included in the design.
c. Item 7.c — Wet Pond Planting Plan:
i. Please provide a planting plan for the wet ponds. As -built sheet C 5.7 does not
include a planting plan, please revise.
d. Item 8 — Recorded Documents:
i. 8.b —Please provide the original, notarized deed restriction document. Please
provide the deed restrictions that limit the amount of BUA per lot that were
placed on these subdivided lots.
e. Item 9 — As -Built Designer MDC Certification:
i. Wet Pond I (Sheet C5.6)
1. As -Built Designer's Certification for General MDC
a. Treatment Requirements

i. 2) — Project does not meet Runoff Volume Match. The
project was never designed to meet Runoff Volume
Match. This item should be "N/A" instead of "N".
b. Stormwater Outlets
i. Provide riprap sizing calculations to verify this. Provide
these calculations to ensure that the riprap is sized
correctly.
ii. Wet Pond 2 (Sheet C5.7)
1. As -Built Designer's Certification for General MDC
a. Treatment Requirements
i. 2) — Project does not meet Runoff Volume Match. The
project was never designed to meet Runoff Volume
Match. This item should be "N/A" instead of "N".
ii. 7) — The following MDCs are not met: 10. Wet Pond
MDC 10 refers to the vegetated shelf planting plan (See
prior comment).
b. Stormwater Outlet
i. Provide riprap sizing calculations to verify this. Provide
these calculations to ensure that the riprap is sized
correctly.
f. Item 10 — As -Built Permittee Certification Please provide anew As -built Permittee
Certification with the below changes made.
i. Deed Restrictions/BUA Records
1. Provide deed restriction information. Please provide the deed restrictions
that limit the amount of BUA per lot that were placed on these
subdivided lots.
ii. Single Family Residential Lots
1. SCMs are not located on individual lots. These should all be "NIA ".
Self-explanatory.
iii. O&M Agreement
1. 1) Final recorded plat should reference the O&M Agreement. It does not
matter that the O&M Agreement was signed before the plat was
recorded. Self-explanatory.
2. 2) Provide documentation of this. Please provided documentation
showing that the O&M Agreement is recorded with the register of deeds
and is in the title chain.
2. Please provide original signatures on all updated forms. For example, the as -built forms provided
with the prior submittal were photocopies.
3. Please correct the following issues (In addition to any previously mentioned comments) with the
Supplement-EZ Form:
a. Drainage Areas Sheet:
i. Line 6 — This item should be an accounting of all of the BUA that is located
within subdivided lots, within the entire site or drainage areas. The entire site
column value for this item should match the sum of BUA shown on the deed
restriction document.
ii. Line 7 — This item is an accounting of all of the BUA that is located outside of
the subdivided lots in public or shared places (Such as roadways, clubhouse

areas, etc.), within the entire site or drainage areas. For this project, the total
BUA (Line 5) should equal the sum of Lines 6 & 7.
iii. Line 10 — These items are an accounting of all of the BUA that is located outside
of the subdivided lots in public or shared places, broken down by type, within the
entire site or drainage areas. For this project, Line 7 should equal the sum of the
items of Line 10.
iv. Entire Site Column, Line 16 — This item and Section IV, 8 should correspond
revise one or the other for consistency.
v. Drainage Area Columns, Line 17 — Since this project is located within the Goose
Creek Watershed, please revise the design storm so it is consistent with the
applicable rules.
vi. Drainage Area Columns, Line 19 — The design volume is calculated using the
Simple Method or the Discrete NRCS Curve Number Method. Please refer to
Part B of the Manual for more information on these methods.
b. Wet Pond Sheet:
i. Line 55 — Please clarify the situation regarding the trash racks (Line 51 and an
MDC) for the wet ponds.
4. Please correct the following issues (In addition to any previously mentioned comments) with the
As -Built Designer's Certification Forms:
a. Check off the "Check here if this is part of a Fast -Track As -Built Package Submittal"
box.
5. The width of the vegetated shelf as shown on as -built C 5.6 is significantly less than the minimum
6 feet wide (Wet Pond MDC 6) and less than the 10 feet wide as shown on the Supplement-EZ
Form (There are sections of the vegetated shelf that are approximately 3 feet wide).
6. As -built sheet C 5.6 — Cross-section C-C shows the maximum sediment storage elevation as 627
ft while the bottom of the pond is shown as 628 ft. Please revise.
NOTE: Per Division policy, the next review of this application will be the final review. Failure to
provide the requested information will result in the project being returned as incomplete. The
return of a project will necessitate resubmittal of all required items, including the application fee.
8. 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:
hgps://edocs.deq.nc.gov/Forms/SW Project Submittal
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 April 20, 2019, 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 SWA000022 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: Mooresville Regional Office