SW7090811_HISTORICAL FILE_20210728

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
SW -i�1I���
v
DOC TYPE
❑ CURRENT PERMIT
❑ APPROVED PLANS
HISTORICAL FILE
❑ COMPLIANCE EVALUATION INSPECTION
DOC DATE
2(22 142 7,,qr'
YYYYMMDD

ROY COOPER
Governor
ELIZABETH S. BISER
Secretary
BRIAN WRENN
Director
NORTH CAROLINA
Envfrotunental QuaUty
July 28, 2021
East Carolina University
Attention: William E. Bagwell, Associate Vice Chancellor
1001 East 4th Street
Mail Stop 209 Facilities Services
Greenville, NC 27858
Subject: Stormwater Permit Renewal
Stormwater Management Permit SW7090811
ECU — Grounds Complex Relocation
Pitt County
Dear Mr. Bagwell:
ua po
A Division of Energy, Mineral, and Land Resources file review has determined that
Stormwater Permit SW7090811 for a stormwater treatment system consisting of a wet
detention pond serving the ECU Grounds Complex Relocation located on W. Arlington
Blvd in Greenville, NC expires on December 29, 2021. This is a reminder that permit
renewal applications are due 180 days prior to expiration. We do not have a record of
receiving a renewal application.
Please submit a completed permit renewal application along with a $505.00 fee for
permit renewal. Permit application forms for renewal can be found on our website at:
https://deq. nc.gov/about/divisions/energy-m ineral-and-land-
resources/stormwater/stormwater-program/post-construction-2. North Carolina General
Statutes and the Coastal Stormwater rules require that this property be covered under a
stormwater permit.
If you have questions, please feel free to contact me at [phone]. 1 will be glad to
discuss this by phone or meet with you. If you would like, I can e-mail you a copy of the
application forms. You can request a copy by e-mailing me at
roger.thorpe()ncdenr.gov.
Sincerely,
<L. 0v
Roger K. Thorpe
Environmental Engineer
North Carolina Department of Environmental Quality i Division of Energy, Mineral and Land Resources
Washington Regional Office 1943 Washington Square Mall I Washington, North Carolina 27889
uoam cNnuua
252.9466481

s DWQ`LJSE':ON>LY."- $'- aX:':
,Date Received Fee Paid Permit Number
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
This form may be photocopied for use as an original
1. GENERAL INFORMATION
1. Applicants name (specify the name of the corporation, individual, etc. who owns the project):
2. Print Owner/Signing Official's name and title (person legally responsible for facility and compliance):
3. Mailing Address for person listed in item 2 above:
East Carolina University, Facilities, Engineering & Architectural Services
City: 1001 East Fourth Street State: NC Zip: 27858-4043
Phone: (252 ) 328-6858 Fax: (252 ) 328-4259
Email: [e-mail]
4. Project Name (subdivision, facility, or establishment name - should be consistent with project name on plans,
specifications, letters, operation and maintenance agreements, etc.):
East Carolina University Grounds Complex Relocation
5. Location of Project (street address):
W. Arlington Boulevard
City: Greenville County: Pitt
6. Directions to project (from nearest major intersection):
Driving east on NC Highway 43, turn right on W. Arlington Boulevard. The site is located approximately
1000 LF from NC Highway 43.
7. Latitude:35° 36' 51" N Longitude:77° 24' 41" W of project
8. Contact person who can answer questions about the project:
Name: R. Todd Fisher, PE Telephone Number: (919 ) 719-1800
Email: [e-mail]
II. PERMIT INFORMATION:
1. Specify whether project is (check one):
s.
❑Renewal ❑Modification
FormSWU-101 Version09.25.08 Page I of

2.' If this application is being submitted as the result of a renewal or modification to an existing permit, list the
existing permit number N/A and its issue date (if known) N/A
3. Specify the type of project (check one):
❑Low Density ®High Density ❑Redevelop []General Permit ❑Universal SMP ❑Other
4. Additional Project Requirements (check applicable blanks; information on required state permits can be
obtained by contacting the Customer Service Center at 1-877-623-6748):
❑LAMA Major ®Sedimentation/Erosion Control ❑404/401 Permit ❑NPDES Industrial Stormwater
III. PROJECT INFORMATION
1. In the space provided below, summarize how stormwater will be treated. Also attach a detailed narrative
(one to two pages) describing stormwater management for the project.
East Carolina University is planning to build an parking and store area to relocate their grounds equipment.
The stormwater will be treated using a wet detention basin The BMP chosen because of the peak flow
attenuation and the pollutant removal. Bioretention cannot be used because of the lack of elevation change across
2. Stormwater runoff from this project drains to the Tar Pamlico River basin.
3. Total Property Area: 6.99 acres 4. Total Coastal Wetlands Area: 0.00 acres
5. Total Property Area (3) — Total Coastal Wetlands Area (4) - Total Project Area**:6.99 acres
6. (Total Impervious Area / Total Project Area) X 100 = Project Built Upon Area (BUA):55.3 %
7. How many drainage areas does the project have?4
8. Complete the following information for each drainage area. If there are more than two drainage areas in the
project, attach an additional sheet with the information for each area provided in the same format as below.
For hieh densitv oroiects, complete the table with one drainage area for each engineered stormwater device.
Basin Information
Drainage Area 1
Drainage Area 2
Receiving Stream Name
UT to Sandalhouse Branch
UT to Sandalhouse Branch
Stream Class & Index No.
Jurisdictional
Jurisdictional
Total Drainage Area (sf)
101495
96703
On -site Drainage Area (sf)
101495
96703
Off -site Drainage Area (sf)
0
0
Existing Impervious* Area (sf)
0
0
Proposed Impervious*Area (sf)
81021 ✓
77362 (future)
Impervious* Area (total)
79.8
80.0
Impervious* Surface Area
Drainage Area 1
Drainage Area 2
On -site Buildings (sf)
9714 ✓
9500
On -site Streets (sf)
0
0
On -site Parking (sf)
69012 J
67862
On -site Sidewalks (sf)
2296 ✓
0
Other on -site (sf)
0
0
Off -site (sf)
0
0
Total (sf):
81021 J
77362
Impervious area is defined as the built upon area including, but not limited to, buildings, roads, parking areas,
sidewalks, gravel areas, etc.
**Total project area shall be calculated to exclude Coastal Wetlands from use when calculating the built upon area
percentage calculation. This is the area used to calculate overall percent project built upon area (BUA).
Form SWU-101 Version 09.25.08 Page 2 of

,Basinlnformation '
D'rainageArea3 yp.:,.';
UT to Sandalhouse Branch
jDrainage:Area.4::::,'
Receiving Stream name~
UT to Sandal house Branch
Stream Class & Index No.
Jurisdictional
Jurisdictional
Total Drainage Area (sf)
18731
231,739
On -Site Drainage Area (sf)
1770
63936 Z(e3,g1
Off -site Drainage Area (sf)
16961
167803
Existing Impervious Area (sf)
0,---, ,
0
Proposed Impervious Area (sf)
r10019 Y
0
% Impervious Area (total)
�-53.5
0
�IinpervA!a0Sufface Area`"
°Drainage A[ea,3
'Drainage�Arei*' '
On -site Buildings (sf)
0
0
On -site Streets (sf)
10019
0
On -site Parking (sf)
0
0
On -site Sidewalks (sf)
0
0
Other on -site (sf)
0
0
Off -site (sf)
0
0
Total (sf)
10019 ✓
0
Propo�,e d BLfA ro oiei v5 1770 on srFc DA 7
r

9. How was the off -site impervious area listed above derived?
Projects in Union County: Contact the DWQ Central Office staff to check to see if you project is located
within a Threatened & Endangered Species watershed that may be subject to more stringent stormwater
requirements.
IV. DEED RESTRICTIONS AND PROTECTIVE COVENANTS
One of the following property restrictions and protective covenants are required to be recorded for all
subdivisions, outparcels and future development prior to the sale of any lot. If lot sizes vary significantly, a table
listing each lot number, size and the allowable built -upon area for each lot must be provided as an attachment.
Forms can be downloaded from httj2://h2o.enr.state.nc.us/sufbml2 forms.htm - deed restrictions.
Form DRPC-1
High Density Commercial Subdivisions
Form DRPC-2
High Density Developments with Outparcels
Form DRPC-3
High Density Residential Subdivisions
Form DRPC-4
Low Density Commercial Subdivisions
Form DRPC-5
Low Density Residential Subdivisions
Form DRPC-6
Low Density Residential Subdivisions with Curb Outlets
By your signature below, you certify that the recorded property restrictions and protective covenants for this
project shall include all the applicable items required in the above form, that the covenants will be binding
on all parties and persons claiming under them, that they will run with the land, that the required covenants
cannot be changed or deleted without concurrence from the NC DWQ, and that they will be recorded prior to
the sale of any lot.
V. SUPPLEMENT FORMS
The applicable state stormwater management permit supplement form(s) listed below must be submitted for each
BMP specified for this project. Contact the Stormwater Permitting Unit at [phone] for the status and
availability of these forms. Forms can be downloaded from http://h2o.enr.state.nc.us/su/bmp forms.htm.
Form SW401-Low Density
Form SW401-Curb Outlet System
Form SW401-Off-Site System
Form SW401-Wet Detention Basin
Form SW401-Infiltration Basin
Form SW401-Infiltration Trench
Form SW401-Bioretention Cell
Form SW401-Level Spreader
Form SW401-Wetland
Form SW401-Grassed Swale
Form SW401-Sand Filter
Form SW401-Permeable Pavement
Form SW401-Cistern
Low Density Supplement
Curb Outlet System Supplement
Off -Site System Supplement
Wet Detention Basin Supplement
Infiltration Basin Supplement
Underground Infiltration Trench Supplement
Bioretention Cell Supplement
Level Spreader/Filter Strip/Restored Riparian Buffer Supplement
Constructed Wetland Supplement
Grassed Swale Supplement
Sand Filter Supplement
Permeable Pavement Supplement
Cistern Supplement
Form SWU-101 Version 09.25.08 Page 3 of

VI. SUBMITTAL REQUIREMENTS
Only complete application packages will be accepted and reviewed by the Division of Water Quality (DWQ).
A complete package includes all of the items listed below. The complete application package should be
submitted to the appropriate DWQ Office. (Appropriate office may be found by locating project on the
interactive online map at httn:Hh2o.enr.state.nc.us/su/msi maos.htm)
Please indicate that you have provided the following required information by initialing in the space provided
next to each item.
In' 'als
• Original and one copy of the Stormwater Management Permit Application Form
• Original and one copy of the Deed Restrictions & Protective Covenants Form (if to.
required as per Part IV above)
• Original of the applicable Supplement Form(s) and O&M agreement(s) for each BMP WIu- fjpA;k/r AT A LA�Tpo-
• Permit application processing fee of $505 (Express: $4,000 for HD, $2,000 for LD)
payable to NCDENR
• Calculations & detailed narrative description of stormwater treatment/management
• Copy of any applicable soils report
• Two copies of plans and specifications (sealed, signed & dated), including: n/11
- Development/Project name
- Engineer and firm
-Legend
- North arrow
- Scale
- Revision number & date
- Mean high water line
- Dimensioned property/project boundary
- Location map with named streets or NCSR numbers
- Original contours, proposed contours, spot elevations, finished floor elevations
- Details of roads, drainage features, collection systems, and stormwater control measures
- Wetlands delineated, or a note on plans that none exist
- Existing drainage (including off -site), drainage easements, pipe sizes, runoff calculations
- Drainage areas delineated
- Vegetated buffers (where required)
VII. AGENT AUTHORIZATION
If you wish to designate authority to another individual or firm so that they may provide information on your
behalf (such as additional information requests), please complete this section. (ex. designing engineer or firm)
Designated agent (individual or firm): Colelenest & Stone
Mailing Address: 150 Fayetteville Street, Suite 950
City: Raleigh State: NC Zip: 27601
Phone: ( 919 1 719-1800 Fax: (_ 919 ) 719-1819
Email: +��shct•� cok�cnes�s�e•�ca�
VIII. APPLICANT'S CERTIFICATION
I, (print or type name of person listed in General Information, item 2) William E. Bagnell
certify that the information included on this permit application form is, to the best of my knowledge, correct and
that the project will be constructed in conformance with the approved plans, that the required deed restrictions
and protective covenants will be recorded, and that the proposed project complies with the requirements of 15A
NCAC 2H .1000.
Date: 5 _ I r - 07
Form SWU-101 Version 09.25.08 Page 4 of 4

Permit No.
(to be pmvrdad by DWQ)
pA
MCDENR
Project name
Contact person
Phone number
Date
Drainage area number
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
WET DETENTION BASIN SUPPLEMENT
This form must be filled out, printed and submitted.
The Required Items Checklist (Part 111) must be printed, filled out and submitted along with all of the required information.
=OF W ATegOG
T
, r
o
Drainage area
198,198 fe
Impervious area, post -development
I 158,3831 ftz
% impervious
79.91 %
Design rainfall depth
1.01 in
Storage Volume: Nan -SA Waters
Minimum volume required
12,718 @3
✓ OK
Volume provided 15,246 k3 ✓
OK, volume provided Is equal to or in excess of volume required.
Storage Volume: SA Waters
1 5' runoff volume
Pre -development 1-yr, 24-hr runoff
Post -development 1-yr, 24-hr runoff
Minimum volume required
Volume provided
Peak Flow Calculations
Is the pretpost control of the lyr 24hr storm peak flow required?
1-yr. 24-hr rainfall depth
Rational C, pre -development
Rational C, post -development
Rainfall intensity: 1-yr, 24-hr stone
Pre -development 1-yr, 24-hr peak flow
Post -development 1-yr, 24-hr peak flow
PrelPost 1-yr, 24-hr peak flow control
Elevations
Temporary pool elevation
Permanent pool elevation
SHWT elevation (approx. at the perm. pool elevation)
Top of 10f1 vegetated shelf elevation
Bottom of 10ft vegetated shelf elevation
Sediment cleanout top elevation (bottom of pond)
Sediment cleanout, bottom elevation
Sediment storage provided
Is there additional volume stored above the state -required temp. pool?
Elevation of the top of the additional volume
Y 1(Y or N)
3.11 in
0.151 limitless)
f-0.791 limitless)
1 5.281 irdhr OK
1.58 fl'lsec ✓
0.38 ft'Isec
RV = 0, cb + a. 9 i A
12v as + d• �Sv/rue,
Q✓ 3 .72
t
V - 36 3o 72) (4, SS)
//, 6qo ±
Q= ':�.d A 2 N o
-1 20 tt'Isec = Cd (trr R 2) 2q
32.001first ✓ _ ,G (3,)4 1,5)2 2�32.Zx•33�
31.00Ifmsl I Z
I 30.00-31.001 first ✓ 1
I 31.501 first ,r,)(4./V(.15W (Q •L� = 1,35
I 30.501 fmsl Data not needed for calculation option #1, but OK If provided.
I 25.001 fmsl ✓
I 24.0D firsl Data not needed for calculation option #1, but OK if provided.
100 It
Y I(Y or N)
32.0 fmsl OK
Fonn SW401-Wet Detention Basin -Rev 6-220109
9
Pans I a II Design Summary, Page 1 of 3

Permit No.
(to t>e Pmvoed by DWQ)
I14DESIGKINF,ORMATION
Surface Areas
Area, temporary pool
16,984 fe
Area REQUIRED, permanent pool
SAIDA ratio
8,919fe
r
,r �4:50 (unitless)
/
✓
sa D� ��y�
X
Area PROVIDED, permanent pool, A._,,
01 ft`
OK
700
Area, bottom of 10ft vegetated shelf, Av,_v„r'm11;355�ft'
CC _ �aQ (�'8 X
Area, sediment deanout, top elevation (bottom of pond), A,,y,
',« F 2;27,7�ft`
J
O
Volumes
Volume, temporary pool
W _ 5,246 ft'
OK
/
,S O +f Z •f
Volume, permanent pool, V. .
Volume, fombay (sum of forebays ifmore than one forabay)
',', •'^ :'8;3151 k'
T 55 / �j y / Q� % 13cA
Forabay % of permanent pool volume
20.0% %
OK
�b �,
SAIDA Table Data
Design TSS removal
✓
_ _%
Coastal SAIDA Table Used?
f ., 'N,„;' (Y or N)
MountaindPiedrrc nt SAIDA Table Used?
(Y or N)
SAIDA ratio
4.50 (unifless)
Average depth (used in SAIDA table).
Calculation option 1 used? (See Figure 10-2b)
(Y or N)
Volume, permanent pool, Vp _p, ,
--'.; $1=:� 41;556 ft
OK
Area provided, permanent PooI. A.�m2„Q4,_1.0
W
OK
Average depth calculated
I-""`3'16ft
OK
Average depth used in SAIDA, d„, (Round to nearest 0.5ft)
_,-;j "L3_0) ft
OK
Calculation option 2 used? (See Figure 10-2b)
(Y or N)
Area provided, permanent pool, A..
."_�.; — ' ft`
Area, bottom of 10ft vegetated shelf, A.,,,,,
•,�>.�%'Wfy, „k`
Area, sediment deanout, top elevation (bottom of pond), A,.a
'Depth' (distance b/w bottom of 10f shelf and top of sediment)
Average depth calculated
Average depth used in SAIDA, d„, (Round to nearest 0.5ft)
Drawdown Calculations
Drawdown through onfce?
Diameter of orifice (if circular)
Area of orifice (if -non -circular)
Coefficient of discharge (Co)
Driving head (Ha)
Drawdown through weir?
Wen type
Coefficient of discharge (C.)
Length of weir (L)
Driving head (H)
Pre -development 1-yr, 24-hr peak flow
Post -development 1-yr, 24-hr peak flow
Storage volume discharge rate (through discharge onfce or weir)
Storage volume drawdown time
Additional Information
Vegetated side slopes
Vegetated shelf slope
Vegetated shelf width
Length of flowpath to width ratio
Length to width ratio
Trash rack for overflow & odfce?
Freeboard provided
Vegetated filter provided?
Recorded drainage easement provided?
Capures all runoff at ultimate build -out?
Drain mechanism for maintenance or emergencies
OK
OK
OK, draws down in 2-5 days.
OK, dmwdown time is correct.
:1 OK ✓
1 OK ✓
ft OK ✓
:1 OK
1 OK ✓
(Y or N) OK
It OK
(Y or N) OK
(Y or N) OK
(Y or N) OK
L'.
Form SW401 Met Detention Basin -Rev S-W/20109 Parts I a H Design summary, Page 2 of 3

Permit
be provided by DWQ)
Ill. REQUIRED'ITEMS'CHECKUST
Please indicate the page or plan sheet numbers where the supporting documentation can be found. An incomplete submittal package will
result in a request for additional information. This will delay final review and approval of the project. Initial in the space provided to
indicate the following design requirements have been met. If the applicant has designated an agent, the agent may initial below. If a
requirement has not been met, attach justification.
Page/ Plan
Initials
Sheet No.
CV K, D
1 Plans (1"- 50' or larger) of the entire site showing:
- Design at ultimate build -out,
- Off -site drainage (if applicable),
- Delineated drainage basins (include Rational C coefficient per basin),
- Basin dimensions,
- Pretreatment system,
- High Flow bypass system,
- Maintenance access,
- Proposed drainage easement and public right of way (ROW),
- Overflow device, and
- Boundaries of drainage easement.
Aa
t o
2. Partial plan (1" = 30' or larger) and details for the wet detention basin showing:
GV 8.6
- Outlet structure with trash rack or similar,
CV19.
- Maintenance access,
- Permanent pool dimensions,
- Forebay and main pond with hardened emergency spillway,
- Basin cross-section,
- Vegetation specification for planting shelf, and
- Filter strip.
(�
_.bNrr
cv�s.
3. Section view of the wet detention basin (1" = 20' or larger) showing:
- Side slopes, 3:1 or lower,
- Pretreatment and treatment areas, and
- Inlet and outlet structures.
4. If the basin is used for sediment and erosion control during construction, clean out of the basin is specified
on the plans prior to use as a wet detention basin.
i�ALC. 5. A table of elevations, areas, incremental volumes & accumulated volumes for overall pond and for Forebay,
QkKilil to verify volume provided.
a 3.1 6. A construction sequence that shows how the wet detention basin will be protected from sediment until the
entire drainage area is stabilized.
[�_ 7. The supporting calculations.
WK04E
101" fiF S cNr, 8. A copy of the signed and notarized operation and maintenance (0&M) agreement.
y' ( — 9. A copy of the deed restrictions (if required).
A • r_ iA� L , 10, A soils report that is based upon an actual field investigation, soil borings, and infiltration tests. County
WKill soil maps are not an acceptable source of soils information.
Form SW401-Wet Detention Basin-Rev.6-2/20/09 Part III, Required Items Checklist, Page 3 of 3