SW8970128_HISTORICAL FILE_20090505

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
SW8
DOC TYPE
❑ CURRENT PERMIT
❑ APPROVED PLANS
HISTORICAL FILE
❑ COMPLIANCE EVALUATION INSPECTION
DOC DATE
200ci 06 0 5
YYYYMMDD
FA

North Carolina
Beverly Eaves Perdue
Governor
May 5, 2009
Mr. Charles Maimone,
UNC-Wilmington
601 College Road
NCDENR
Department of Environment and
Division of Water Quality
Coleen H. Sullins
Director
Vice Chancellor
Wilmington, NC 28403
Natural Resources
Subject: Stormwater Permit No. SW8 970128 Modification
UNC-W Honors, International, & Privatized Housing
Regional Energy Plant — Phase 2 & 3
High Density Project
New Hanover County
Dear Mr. Maimone:
Dee Freeman
Secretary
The Wilmington Regional Office received and accepted a complete modified Stormwater
Management Permit Application for UNCW Honors, International, & Privatized Housing,
Regional Energy Plant — Phase 2 & 3 on March 18, 2009. Staff review of the plans and
specifications has determined that the project, as proposed, will comply with the Stormwater
Regulations set forth in Title 15A NCAC 21-1.1000. We are forwarding Permit No. SW8 970128
MOD, dated May 5, 2009, for the construction of the subject project.
This permit supercedes all previously issued stormwater permits, and shall be effective from tt,e
date of issuance until March 7, 2015, and shall be subject to the conditions and limitations as
specified therein. Please pay special attention to the Operation and Maintenance requirement
in this permit. Failure to establish an adequate system for operation and maintenance of the
stormwater management system will result in future compliance problems.
If any parts, requirements, or limitations contained in this permit are unacceptable, you have the
right to request an adjudicatory hearing upon written request within thirty (30) days following
receipt of this permit. This request must be in the form of a written petition, conforming to
Chapter 150B of the North Carolina General Statutes, and filed with the Office of Administrative
Hearings, P.O. Drawer 27447, Raleigh, NC 27611-7447. Unless such demands are made this
permit shall be final and binding.
If you have any questions, or need additional information concerning this matter, please conta --.
Steve Pusey, or me at [phone].
Sincerely,
Veo��??S'c
rgette cott
Stormwater Supervisor
Division of Water Quality
GDS/sgp: S:\WQS\STORMWATER\PERMIT\970128mod.apr09
cc: John Tunstall, PE — Norris, Kuske, & Tunstall Consulting Engineers
Tony Roberts, New Hanover County Building Inspections
City of Wilmington Development Services
Steve Pusey
Wilmington Regional Office
Central Files
Wilmington Regional Office
127 Cardinal Onve Extension, Wilmington, North Carolina 28405 I�TOne t,
Phone [phone] FAX [phone] Customer Service 1-877-623.6748 1 � OT�th lCaroll na
w Internet navaterquality.org Nat�rrallil

State Stormwater Management Systems
Permit No. SW8 970128 Modification
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
STATE STORMWATER MANAGEMENT PERMIT
HIGH DENSITY DEVELOPMENT
In accordance with the provisions of Article 21 of Chapter 143, General Statutes of
North Carolina as amended, and other applicable Laws, Rules, and Regulations
PERMISSION IS HEREBY GRANTED TO
Charles Maimone and UNC-W
UNC-W Honors, International, & Privatized Housing - Regional Energy Plant - Ph. 2 & 3
Cahill Drive, UNCW Campus, Wilmington, New Hanover County
FOR THE
construction, operation, and maintenance of a wet detention pond in compliance with
the provisions of Session Laws 2006-246, 2008-211, and 15A NCAC 2H .1000
(hereafter referred to as the "stormwater rules') and the approved stormwater
management plans and specifications and other supporting data as attached and on file
with and approved by the Division of Water Quality and considered a part of this permit.
This permit shall be effective from the date of issuance until March 7, 2015, and shall
be subject to the following specified conditions and limitations:
I. DESIGN STANDARDS
This permit is effective only with respect to the nature and volume of stormwater
described in the application and other supporting data.
2. This stormwater system has been approved for the management of stormwater
runoff as described in Section 1.7 on page 3 of this permit. The stormwater
control has been designed to handle the runoff from 444,223 square feet of
impervious area. ,
3. The tract will be limited to the amount of built -upon area indicated on page 3 of
this permit, and per approved plans.
4. All stormwater collection and treatment systems must be located per the
approved plan.
5. The runoff from all built -upon area within the permitted drainage area of this
project must be directed into the permitted stormwater control system.
This modification adds 3,206 square feet of built -upon area to this pond by
adding a building and changing pavement and sidewalk sections as needed for
the Regional Energy Plant.
Page 2 of 7

-State Stormwater Management Systems
Permit No. SW8 970128
Modification
7. The
following design criteria have been provided in the wet detention pond and
must be maintained at design condition:
a.
Design storm, inches:
1" 1.5"
Total
b.
Drainage Area, 9cres:
28.14 2.64
30.78
Onsite, ft :
1,202,757 0
1,202,757
Offsite, ft2:
22,498 115,216
137,714
C.
Total Impervious Surface, ft2:
397,793 46,430
444,223
Onsite buildings, ft :
102,036 3,050
105,086
Onsite streets, ft2.
8,100 0
8,100
Onsite parking, ft2:
178,600 0
178,600
Onsite sidewalP, ft2:
85,953 1,170
87,123
Other onsite, ft :
606 0
606 (future)
Existing Offsite, ft2:
22,498 42,210
64,708
d.
Pond Depth, feet:
6.0
e.
TSS removal efficiency:
90%
f.
Permanent Pool Elevation, fmsl:
26.0
Permanent Pool Surface Areq, ft2:
52,127
h.
Permitted Storage Volume, ft :
79,638
i.
Temporary Storage Elevation, fmsl:
27.4
j.
Controlling Orifice:
3"Ol pipe
k.
Permitted Forebay Volume, ft3:
58,631
I.
Receiving Stream/River Basin:
Bradley Creek / Cape Fear
M.
Stream Index Number:
CPF24 18-87-24-4-(1)
n.
Classification of Water Body:
"SC HQW #"
II. SCHEDULE OF COMPLIANCE
The stormwater management system shall be constructed in its entirety,
vegetated and operational for its intended use prior to the construction of any
built -upon surface.
During construction, erosion shall be kept to a minimum and any eroded areas of
the system will be repaired immediately.
The permittee shall at all times provide the operation and maintenance
necessary to assure the permitted stormwater system functions at optimum
efficiency. The approved Operation and Maintenance Plan must be followed in
its entirety and maintenance must occur at the scheduled intervals including, but
not limited to:
a. Semiannual scheduled inspections (every 6 months).
b. Sediment removal.
C. Mowing and revegetation of slopes and the vegetated filter.
d. Immediate repair of eroded areas.
e. Maintenance of all slopes in accordance with approved plans and
specifications.
f. Debris removal and unclogging of outlet structure, orifice device, flow
spreader, catch basins and piping.
q. Access to the outlet structure must be available at all times.
4. Records of maintenance activities must be kept and made available upon
request to authorized personnel of DWQ. The records will indicate the date,
activity, name of person performing the work and what actions were taken.
The facilities shall be constructed as shown on the approved plans. This permit
shall become void unless the facilities are constructed in accordance with the
conditions of this permit, the approved plans, specifications, and other support
data.
Page 3 of 7

State Stormwater Management Systems
Permit No. SW8 970128 Modification
6. Decorative spray fountains will be allowed in the stormwater treatment system,
subject to the following criteria:
a. The fountain must draw its water from less than 2' below the permanent
pool surface.
b. Separated units, where the nozzle, pump and intake are connected by
tubing, may be used only if they draw water from the surface in the
deepest part of the pond.
c. The falling water from the fountain must be centered in the pond, away
from the shoreline.
d. The maximum horsepower for a fountain in this pond is 3/4 horsepower.
Upon completion of construction, prior to issuance of a Certificate of Occupancy,
and prior to operation of this permitted facility, a certification must be received
from an appropriate designer for the system installed certifying that the permitted
facility has been installed in accordance with this permit, the approved plans and
specifications, and other supporting documentation. Any deviations from the
approved plans and specifications must be noted on the Certification. A
modification may be required for those deviations.
8. If the stormwater system was used as an Erosion Control device, it must be
restored to design condition prior to operation as a stormwater treatment device,
and prior to occupancy of the facility.
9. Access to the stormwater facilities shall be maintained via appropriate
easements at all times.
10. The permittee shall submit to the Director and shall have received approval for
revised plans, specifications, and calculations prior to construction, for any
modification to the approved plans, including, but not limited to, those listed
below:
a. Any revision to any item shown on the approved plans, including the
stormwater management measures, built -upon area, details, etc.
b. Project name change.
C. Transfer of ownership.
d. Redesign or addition to the approved amount of built -upon area or to the
drainage area.
e. Further subdivision, acquisition, lease or sale of all or part of the project
area. The project area is defined as all property owned by the permittee,
for which Sedimentation and Erosion Control Plan approval or a CAMA
Major permit was sought.
f. Filling in, altering, or piping of any vegetative conveyance shown on the
approved plan.
11. The permittee shall submit final site layout and grading plans for any permitted
future areas shown on the approved plans, prior to construction.
12. A copy of the approved plans and specifications shall be maintained on file by
the Permittee for a minimum of ten years from the date of the completion of
construction.
13. The Director may notify the permittee when the permitted site does not meet one
or more of the minimum requirements of the permit. Within the time frame
specified in the notice, the permittee shall submit a written time schedule to the
Director for modifying the site to meet minimum requirements. The permittee
shall provide copies of revised plans and certification in writing to the Director
that the changes have been made.
Page 4 of 7

State Stormwater Management Systems - - --
Permit No. SW8 970128 Modification
III. GENERAL CONDITIONS
This permit is not transferable except after notice to and approval by the Director.
In the event of a change of ownership, or a name change, the permittee must
submit a formal permit transfer request to the Division of Water Quality,
accompanied by a completed name/ownership change form signed by both
parties, and supporting documentation as listed on page 2 of the form. The
approval of this request will be considered on its merits and may or may not be
approved. The permittee is responsible for compliance with all permit conditions
until such time as the Division approves the transfer request.
2. Failure to abide by the conditions and limitations contained in this permit may
subject the Permittee to enforcement action by the Division of Water Quality, in
accordance with North Carolina General Statute 143-215.6A to 143-215.6C.
3. The issuance of this permit does not preclude the Permittee from complying with
any and all statutes, rules, regulations, or ordinances, which may be imposed by
other government agencies (local, state, and federal) having jurisdiction.
4. In the event that the facilities fail to perform satisfactorily, including the creation
of nuisance conditions, the Permittee shall take immediate corrective action,
including those as may be required by this Division, such as the construction of
additional or replacement stormwater management systems.
5. The permittee grants DENR Staff permission to enter the property during normal
business hours for the purpose of inspecting all components of the permitted
stormwater management facility.
6. The permit may be modified, revoked and reissued or terminated for cause. The
filing of a request for a permit modification, revocation and reissuance or
termination does not stay any permit condition.
7. Unless specified elsewhere, permanent seeding requirements for the stormwater
control must follow the guidelines established in the North Carolina Erosion and
Sediment Control Planning and Design Manual.
8. Approved plans and specifications for this project are incorporated by reference
and are enforceable parts of the permit.
9. The permittee shall notify the Division in writing of any name, ownership or
mailing address changes at least 30 days prior to making such changes.
10. The permittee shall submit a renewal application and fee at least 180 days prior
to the expiration date of this permit.
Permit modified and reissued this the 5th day of May 2009.
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
Division of Water Quality
By Authority of the Environmental Management Commission
Page 5 of 7

State Stormwater Management Systems
Permit No. SW8 970128 Modification
UNC-W Honors, International, & Privatized Housing — Regional Energy Plant
Stormwater Permit No. SW8 970128 Mod.
New Hanover County
Designer's Certification
I, , as a duly registered in the
State of North Carolina, having been authorized to observe (periodically/ weekly/ full
time) the construction of the project,
(Project)
for (Project Owner) hereby state that, to the
best of my abilities, due care and diligence was used in the observation of the project
construction such that the construction was observed to be built within substantial
compliance and intent of the approved plans and specifications.
The checklist of items on page 2 of this form is included in the Certification.
Noted deviations from approved plans and specification:
Signature
Registration Number
Date
SEAL
Page 6 of 7

State Stormwater Management Systems "
--Permit No. SW8 970128-Modification- .
Certification Requirements:
.1. The drainage area to the system contains approximately the permitted
acreage.
2. The drainage area to the system contains no more than the permitted
amount of built -upon area.
3. All the built -upon area associated with the project is graded such that the
runoff drains to the system.
4. All roof drains are located such that the runoff is directed into the system
5. The outlet/bypass structure elevations are per the approved plan.
6. The outlet structure is located per the approved plans.
7. Trash rack is provided on the outlet/bypass structure.
8. All slopes are grassed with permanent vegetation.
9. Vegetated slopes are no steeper than 3:1.
.10. The inlets are located per the approved plans and do not cause short-
circuiting of the system.
11. The permitted amounts of surface area and/or volume have been
provided.
12. Required drawdown devices are correctly sized per the approved plans.
13. All required design depths are provided.
14. All required parts of the system are provided, such as a vegetated shelf,
and a forebay.
15. The required system dimensions are provided per the approved plans.
cc: NCDENR-DWQ Regional Office
Tony Roberts, New Hanover County Building Inspections
Page 7 of 7

DWQ USE ONLY
Date Received
Fee Paid
Permit Number
�3-//- O
soS. °O #27,/,
Ewa 97aiz9' moo
State of North Carolina N J # U`� N _I�q_I
Department of Environment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATI TQR X ___
This form may be photocopied for use as an original
MAR ',1 2009
I. GENERAL INFORMATION
IM
1. Applicants name (specify the name of the corporation, individual, etc. who owns the project):
UNC Wilmington
2. Print Owner/Signing Official's name and title (person legally responsible for facility and compliance):
Charles A. Maimone, Vice Chancellor Business Affairs
3. Mailing Address for person listed in item 2 above:
601 South College Road
City:Wilmington State:NC Zip:28403
Phone: (910 ) 962-3067 Fax: (910 ) 962-3550
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.):
UNCW Privatized Housing, Honors Housing and International Housing, Regional Energy Plant - Phase II &
5. Location of Project (street address):
601 South College Road
City:Wilmington County:New Hanover Zip:28403
6. Directions to project (from nearest major intersection):
From Randall Drive & College Road head eastward on Randall. Turn right onto Reynolds Drive. Tom left
onto Cahill Drive. The Energy Plant site is located at the termination of Cahill Drive behind Wagoner Drive.
7. Latitude:34° 13' 19.35" N Longitude:77° 51' 44" W of project
8. Contact person who can answer questions about the project:
Name:lohn S. Tunstall, P.E. Telephone Number: (910 ) 343-9653
Email:[e-mail]
II. PERMIT INFORMATION:
1. Specify whether project is (check one):
[]New
❑Renewal ®Modification
Form SWU-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 numberSW8 970128 Modification and its issue date (if known)December 19, 2008
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):
❑CAMA Major ®Sed imentation /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.
The proposed permit revision is a result of additional built upon area (BUA) from UNCW School of Nursing
Regional Energy Plant that naturally drains to the existing UNCW Privatized Housing, Phase I pond. The Phase
I pond has sufficient surface area and volume to treat the additional BUA & DA from the Regional Energy Plant.
2. Stormwater runoff from this project drains to the Cape Fear River basin.
3. Total Property Area: 30.78 acres 4. Total Coastal Wetlands Area: 0 acres
5. Total Property Area (3) — Total Coastal Wetlands Area (4) = Total Project Area**:30.78 acres
6. (Total Impervious Area / Total Project Area) X 100 = Project Built Upon Area (BUA):33.14
7. How many drainage areas does the project have? 1
S. 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 high density projects, 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 Bradley Creek
Stream Class & Index No.
SC; HQW
Total Drainage Area (so
1,340,472 SF
On -site Drainage Area (so
1,202,757 SF
Off -site Drainage Area (so
137,715 SF
Existing Impervious* Area (so
441,017 SF
Proposed Impervious*Area (so
3,206 SF
% Impervious* Area (total)
33.14%
Impervious* Surface Area
Drainage Area 1
Drainage Area 2
On -site Buildings (sf)
102,036 SF + 3,050 SF = 105,086 SF
On -site Streets (sf)
8,100 SF
On -site Parking (so
179,614 - 5,620 SF + 4,606 SF =
178,600 SF
On -site Sidewalks (so
85,953 SF + 1,170 SF = 87,123 SF
Other on -site (so
606 SF (Future 4/23/08 Mod.)
Off -site (so
22,498 (Existing) +42,210 (Proposed)
= 64,708 SF
Total (so:
444,223 SF
* Impervious area is defined as the built upon area including, but not limited to, buildings, roads, parking areas,
sidewalks, gravel areas, etc.
Form SWU-101 Version09.25.08 Page 2of4

'"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).
9. How was the off -site impervious area listed above derived?Existing design plans for UNCW Privatized
Housing Phases I, II and III (as measured in CAD).
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 htto://h2o.enr.state.nc.us/su/bmp 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 ham://h2o.enr.state.nc.us/su/bml2 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 4

Vk • . 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 http://h2o.enr.state.nc.us/su/msi maps.htm)
1. Please indicate that you have provided the following required information by initialing in the space provided
next to each item.
I ' 'aIs
• Original and one copy of the Stormwater Management Permit Application Form
• Original and one copy of the Deed Restrictions & Protective Covenants Form (if
required as per Part IV above)
• Original of the applicable Supplemen orm(s) and O&M agreement(s) for each BMP _
• Permit application processing fee o $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:
- 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):Iohn S. Tunstall, P.E. / Norris, Kuske & Tunstall Consulting Engineers, Inc.
Mailing Address:902 Market Street
City:Wilmington State:NC Zip:28401
Phone: (910 ) 343-9653 Fax: (910 ) 343-9604
Email:[e-mail]
VIII. APPLICANT'S CERTIFICATION
1, (print or type name of person listed in Ceneral Information, item 2) Charles A. Maimone, Vice Chancellor Business Affairs
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.
Signature:
Date:
Form SWU-101 Version 09.25.08 Page 4 of 4

•� r
NCDENR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue Coleen H. Sullins
Governor Director
May 5, 2009
Mr. Charles Maimone, Vice Chancellor
UNC-Wilmington
601 College Road
Wilmington, NC 28403
Subject: Stormwater Permit No. SW8 970128 Modification
UNC-W Honors, International, & Privatized Housing
Regional Energy Plant — Phase 2 & 3
High Density Project
New Hanover County
Dear Mr. Maimone:
Dee Freeman
Secretary
The Wilmington Regional Office received and accepted a complete modified Stormwater
Management Permit Application for UNCW Honors, International, & Privatized Housing,
Regional Energy Plant — Phase 2 & 3 on March 18, 2009. Staff review of the plans and
specifications has determined that the project, as proposed, will comply with the Stormwater
Regulations set forth in Title 15A NCAC 2H.1000. We are forwarding Permit No. SW8 970128
MOD, dated May 5, 2009, for the construction of the subject project.
This permit supercedes all previously issued stormwater permits, and shall be effective from tt'\e
date of issuance until March 7, 2015, and shall be subject to the conditions and limitations as V,
specified therein. Please pay special attention to the Operation and Maintenance requirement .'7,
in this permit. Failure to establish an adequate system for operation and maintenance of the
stormwater management system will result in future compliance problems.
If any parts, requirements, or limitations contained in this permit are unacceptable, you have the
right to request an adjudicatory hearing upon written request within thirty (30) days following
receipt of this permit. This request must be in the form of a written petition, conforming to
Chapter 150B of the North Carolina General Statutes, and filed with the Office of Administrative
Hearings, P.O. Drawer 27447, Raleigh, NC 27611-7447. Unless such demands are made this,
permit shall be final and binding.
If you have any questions, or need additional information concerning this matter, please contadt
Steve Pusey, or me at [phone].
i
Sincerely,
�
eorgette Cott
Stormwater Supervisor
Division of Water Quality
GDS/sgp: S:\WQS\STORMWATER\PERMIT\970128mod.apr09
cc: John Tunstall, PE — Norris, Kuske, & Tunstall Consulting Engineers
Tony Roberts, New Hanover County Building Inspections
City of Wilmington Development Services
Steve Pusey
Wilmington Regional Office
Central Files
Wilmington Regional Office
127 Cardinal Drive Extension, Wilmington, North Carolina 28405 I�TOne L, 1 i
Phone. [phone] \ FAX: [phone] \ Customer Service 1-877-623.6748 1 ����fffOrthCarollrtd `
Internet wwvv ncivaterquality org /` atut lly 1
An Equal Opportunity\ Affirmative Action Employer (/ YK KILL �/

Date:
Project Received Date:3/�\ /09 _ rAccepted/F3ejted, (circle one)
Pro ect Location: I'Cam \-I^, m.r rn,c� �-� o reouired (ves/6b1) Date received:
�ymji
mule(s) Subject (check all that ap): ols for completing form: '✓'= Yes/OK ' x'= No/Deficient 'n/a' or'\' or'/'
1995 Coastal (Mop O 2008 Coastal ❑ Phase II ❑ Universal
Paperwy�k: Rw\wa goo
WV
for $505 (must be no older than 6 months)
Application form with correct/original signatures (original plus 1 copy). If Corporation or LLC also:
o Print the info from the NCSOS
o Either, 1.) The applicant is listed on the NCSOS with his/her correct title or, 2.) A notarized letter of
authorization has been provided:
supplements (1 original per BMP). BMP type(s): MonsgAkoO.
5alow with correct/original signatures (1 original per BMP, exeept el spreaders/filter strips and swales)
N )R❑ Deed restrictions (if outparcel or subdividing) (original plus 1 copy)
o Deed restriction template (signed and notarized) or
o Proposed Declaration of Covenants and Restrictions (signed and notarized)
tom❑ Soils report identifying the SHWT
upporting calculations, signed & sealed (if necessary)
Receiving stream classification. SC, t{(DvJ , If SA or ORW also:
o SA: USGS topo map with the site, the receiving waters and the '% mile radius shown to scale.
o ORW: 575 It of MHWL for Area of Environmental Concern and max BUA per rule.
❑ Modifications: 1.) If built: Designer's Cert., 2.) If partially built: Partial Cert., 3.) If not built: No Cert. needed.
-Development Type (check all that apply):
❑ Residential or GK`ommercial ❑ Deed restrictions match?
❑ Subdivision or GYSingle Lot ❑ Deed restrictions match?
G✓High Density or ❑ Low Density ❑ Deed restrictions match?
❑ Offsite project ❑ Redevelopment Ur Modification ❑ Exempt
N1f� ❑ NCG02 (bulkhead) ❑ NCG03 (clear/grade) ❑ NCG04 (linear)
DIrnsity:
r�BUA calculations include common areas, clubhouse, sidewalks, etc.
FUA %: 33• IL{% , Matches high/low density requirement for rule and receiving stream class.
o obvious math errors
High Density: Design storm correct for rule and receiving stream c1ass.5up(1\ VrQ4r& 5q 5 1.0-1•s 'i A -Ave
ins, Wned and sealed (2 sets): Sure Com-S do,z
LY Two sets received a' -Layout (with proposed BUA dimensions) %m tut w) $uft
"LJ Grading moo ❑ Drainage area map (all HD systems & curb outlet swales)
G7IVicinity map 1"DO Project Boundaries MbP ❑ Legend
m'a❑ Wetlands:
o Delineated on plans o "No wetlands onsite" on plans
MOD ❑ Details:
o Roads o Cul-de-sacs o Curbing o Sidewalk
o BMPs/ Level spreaders/ Filter strips/ Curb outlet swales o Buildings (Apts or Condos)
Offsite Projects:
❑ Designer's Certification has been submitted for the Offsite BMP receiving the runoff from the project.
❑ Deed restrictions have been recorded and a copy submitted for the Offsite BMP permit.
❑ Lot size has not changed from what was approved under the Master Plan.
❑ Correct lot number is referenced on the supplement form.
❑ Offsite system is in compliance with its permit, if known.
Infiltration Projects:
❑ Soils report. SHWT, soil type, and expected infiltration rate are provided.
❑ DWQ has conducted a site visit? Date:
Wet Ponds: Permanent Pool Meets One of the Following:
❑ . is located no lower than 6" below the estimated SHWT.
❑ Incoming groundwater is quantified and evaluated, AND Storage volume verified, AND Outlet evaluated for free
drainage to the receiving waters under SHWT conditions.
Decision (check one):
❑ Complete: Return file to admin (Jo Casmer) to log in. (Stamped in received date = BIMS date)
❑ Slightly incomplete: E-mail consultant, request information to be returned within one business day (24 hours after
request. Info requests on Friday, allow a return on the following business day) If info not returned, issue an
application return letter and give everything to admin. (Add info received date = BIMS date)
❑ Substantially incomplete: Issue an application return letter and give everything to admin.

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J. Phillip Norris, P.E.
NORRIS, KUSKE &TUNSTALL John A.Kuske,111,RE.
John P.E.
CONSULTING ENGINEERS, INC. J.A.Kuske,P.E. E.of Counsel
March 11, 2009 RECD MAR j j Z009
Ms. Jo Casmer
NC DENR / Division of Water Quality
Water Quality Section
127 Cardinal Drive Extension
Wilmington, NC 28405-3845
Re: State Stormwater Permit Submittal
UNCW Privatized Housing, Honors Housing and International Housing,
Regional Energy Plant — Phase II & Phase III
Wilmington, NC
NKT Project No. 06179-1
Dear Ms. Casmer:
Enclosed are two (2) sets of plans for the subject project, two (2) drainage area plans,
one (1) set of calculations, one (1) copy of the stormwater narrative, the original
Division of Water Quality Stormwater Management Permit application, the original SW-
401 Wet Detention Basin Supplement form, the original Wet Detention Basin Operation
and Maintenance Agreement and a $505.00 check for the permit review fee.
Please review this information for approval and contact us with any questions or
comments you may have. Thank you for your assistance on this project.
Sincerely,
NORRIS, KUSKE & TUNSTALL
CONSULTING ENGINEERS, INC.
Jo S. Tunstall, P. E.
JST/asn
06179-1 03-11-09-s-sw-itr
Enclosures
902 Market Street • Wilmington, NC 28401-4733 • Phone: [phone] • Fax: [phone]

STORMWATER SYSTEM & EROSION CONTROL NARRATIVE
UNCW PRIVATIZED HOUSING, HONORS HOUSING AND
INTERNATIONAL HOUSING, REGIONAL ENERGY PLANT -
PHASE II & PHASE III
Wilmington, North Carolina
For
UNC Wilmington
601 South College Road
Wilmington, NC 28403
[phone]
,1. .... 9.. J�.
aOQ, o e A%°,
10 :eos
'I1f11113\�1
BY:
February 2009
Prepared by:
MAR 1 12009
NORRIS, KUSKE 81 TUNSTALL CONSULTING ENGINEERS, INC.
902 Market Street
Wilmington, North Carolina 28401
[phone]
[phone] (Fax)
NKT Project No. 06179-1

NARRATIVE
DESCRIPTION:
The project site is located along Cahill Drive and behind Wagoner Hall on the
campus of the University of North Carolina at Wilmington. The soils of the site consist
of silty sand and sands with grades ranging from 1% to 5%. Approximately 1.57 acres
will be graded to allow construction of a Regional Energy Plant with associated
underground piping. The runoff from the site is estimated using the rational method 10-
year design storm and rainfall data for the area. Construction is scheduled to begin as
soon as all permits and approvals are obtained.
EROSION CONTROL MEASURES:
The attached plans and specifications outline the requirements for erosion
control measures. Silt fencing will be provided where stormwater would be expected to
sheet flow from disturbed areas directly to adjacent property. Gravel check dams will
not be provided unless the Contractor has to temporarily discharge into an open ditch
instead of the proposed storm drain outfall. A gravel construction entrance will be
constructed at the Regional Energy Plant entrance and off the parking area off Cahill
Drive. Maintenance will be provided by the grading contractor and developer.
STORMWATER MANAGEMENT MEASURES:
The project site is located in New Hanover County. Land disturbing on the site
will exceed one acre, which requires the site to comply with the State Regulations. The
stormwater runoff from the development will be directed to the Privatized, Honors and
International Housing (SW8 970128 Modification) stormwater detention pond. The
stormwater detention pond was designed to accommodate this site.
CONSTRUCTION SEQUENCE:
The Contractor will install the gravel construction entrance and silt fence prior to
beginning any clearing and grading operations. Additional silt fence will be installed
when and if conditions warrant during construction. The detention pond/silt basin will
be constructed immediately after that portion of the site is cleared, and outlet structure
with protection will be installed. Disturbed areas will be landscaped or seeded upon
completion.

EROSION CONTROL NOTES AND MAINTENANCE PLAN
1. All erosion and sediment control measures will be checked for stability and
operation following every runoff -producing rainfall, but in no case, less than once
every week and within 24 hours of every half -inch rainfall.
2. All points of egress will have construction entrances that will be periodically top -
dressed with an additional 2 inches of #4 stone to maintain proper depth. They
will be maintained in a condition to prevent mud or sediment from leaving the
site. Immediately remove objectionable material spilled washed or tracked onto
the construction entrance or roadways.
3. Sediment will be removed from hardware cloth and gravel inlet protection, block
and gravel inlet protection, rock doughnut inlet protection and rock pipe inlet
protection when the designed storage capacity has been half filled with
sediment. Rock will be cleaned or replaced when the sediment pool no longer
drains as designed. Debris will be removed from the rock and hardware cloth to
allow proper drainage. Silt sacks will be emptied once a week and after every
rain event. Sediment will be removed from around beaver dams, dandy sacks
and socks once a week and after every rain event.
4. Sediment will be removed from behind the sediment fence when it becomes half
filled. The sediment fence will be repaired as necessary to maintain a barrier.
Stakes must be steel. Stake spacing will be 6 feet max. with the use of extra
strength fabric, without wire backing. Stake spacing will be 8 feet max. when
standard strength fabric and wire backing are used. If rock filters are designed at
low points in the sediment fence, the rock will be repaired or replaced if it
becomes half -full of sediment, no longer drains as designed or is damaged.
5. All seeded areas will be fertilized, reseeded as necessary and mulched
according to specifications in the vegetative plan to maintain a vigorous, dense
vegetative cover. All slopes will be stabilized within 21 calendar days. All other
areas will be stabilized within 15 working days.

SECTION 02920
SOIL EROSION AND SEDIMENTATION CONTROL
1. GENERAL
1.1 Contractor shall take every reasonable precaution throughout construction to
prevent the erosion of soil and the sedimentation of streams, lakes, reservoirs, other
water impoundments, ground surfaces, or other property as required by State and Local
regulations.
1.2 The Contractor shall install all required silt fences, and construction entrances at
the initiation of work, and have these measures reviewed and approved by the local
permit authority prior to clearing and grading operations.
1.3 The Contractor shall, within 21 days of suspension or completion of land
disturbing activities, provide permanent protective covering for disturbed areas.
Temporary and permanent erosion control measures shall be coordinated to assure
economical, effective, and continuous erosion and siltation control throughout the
construction and post -construction period. Use the specified seed for both temporary and
permanent seeding.
2. PRODUCTS
2.1 Asphalt for anchoring mulch shall be Type SS-1 Emulsion.
2.2 Fertilizer shall be 10-10-10 grade or equivalent.
2.3 Lime shall be dolomitic agricultural ground limestone containing not less than 10
percent magnesium oxide.
2.4 Mulch shall be small grain straw, hay, wood chips, asphalt emulsion, jute or other
suitable material free of undesirable weed seed.
2.5 Phosphate shall be 20 percent superphosphate or equivalent.
2.6 Seed shall be 20% carpet grass, 24% Bermuda, 20% turf Fescue, 10% Creeping
Red Fescue, and 24% Annual Rye grain. Bermuda seed shall be hulled for warm
weather planting and unhulled for cool weather planting. Purity of seed shall be a
minimum of 98 percent and germination shall be a minimum of 85 percent.
2.7 Silt fence shall consist of NCDOT Class A fabric supported by metal posts
spaced not more than 6 feet on center. The bottom of the fabric shall be buried a
minimum of 6 inches.
2.8 Gravel for check dams shall be #57 washed stone.

2.9 Aggregate for construction entrance shall be #4 washed stone.
2.10 Stone rip rap for check dams and erosion control shall be NCDOT Class A or B
as shown.
3. EXECUTION
3.1 General: Take every practicable measure during construction or suspension to
work to minimize erosion and siltation. Measures should include good construction
practices, temporary physical barriers to sediment travel, settling basins for new ditches,
and establishment of vegetative cover.
3.2 Construction Practices
3.2.1 Avoid dumping soil or sediment into any wetland or watercourse.
3.2.2 Maintain an undisturbed vegetative buffer where possible between a natural
watercourse and trenching and grading operations.
3.2.3 Avoid equipment crossings of streams, creeks, and ditches where practicable.
3.2.4 Grade all cut, fill and ditch slopes to minimum slope of 3:1, unless otherwise
shown or directed.
3.3 Temporary Physical Barriers are required where sedimentation on off site
property or excessive erosion is a problem.
3.3.1 Mulch shall be used for temporary stabilization of areas subject to excessive
erosion and for protection of seedbeds after planting where required.
1. Apply grain straw and hay at a rate of 75 to 100 pounds per 1000 square feet
and wood chips at a rate of 500 pounds per 1000 square feet. Jute and mesh
should be installed as per manufacturer's instructions.
2. Asphalt emulsion for slope stabilization should be applied at a rate of 1,000
gallons per acre. Asphalt emulsion used for anchoring straw should be
applied at a rate of 150 gallons per ton of straw.
3.3.2 Silt Fences shall be used at the base of slopes to restrict movement of sediment
from the site. Clean silt fence of accumulated sediment after each rainfall event or
when it exceeds a depth of 0.5 feet above natural grade.
3.3.3 Stone Check Dams, placed at the discharges of creeks, ditches, and swales,
shall consist of Class A or Class B erosion control stone at minimum two feet high and

three feet thick across the watercourse, with a one foot thick layer of gravel on upstream
side. Remove sediment if accumulated to a depth of 1.0 feet at upstream face.
3.4 Vegetative Cover: Establish and maintain permanent vegetative cover on all
unpaved areas disturbed by the work.
3.4.1 Preparation of Seedbed: Areas to be seeded shall be scarified to a depth of 4
inches and until a firm, well pulverized, uniform seedbed is prepared. Lime, phosphorous
and fertilizer shall be applied during the scarification process in accordance with the
following rates:
Lime: 45 pounds per 1000 square feet
Phosphorous: 20 pounds per 1000 square feet
Fertilizer: 17 pounds per 1000 square feet
3.4.2 Seeding: Disturbed areas shall be seeded with 2 to 3 pounds per 1000 square
feet of the specified seed mixture. Seed shall be worked into the bed to a depth of 1/4
inch. Regrade and seed eroded areas immediately
3.4.3 Mulch all areas immediately after seeding. Mulch shall be applied and anchored
as specified hereinbefore. Reapply as necessary to retain cover until grass is
established.
3.5 Construction Entrance: Provide an aggregate drive, 20 feet wide by 50 feet long
by 6 inches thick at each entrance to the site used by construction vehicles, until such
time as the permanent roadway is constructed. Remove soil if accumulated to a depth
greater than 0.5 inches.
3.6 Maintenance: The Owner and Contractor shall be responsible for maintaining all
temporary and permanent erosion control measures. Temporary structures shall be
maintained until such time as vegetation is firmly established in the area protected by
the structure. Permanent streambank protection and grassed areas shall be
maintained until completion of the project. Areas that fail to show a suitable stand of
grass or which are damaged by erosion shall be immediately repaired.
END OF SECTION

w
STORMWATER CALCULATIONS
UNCW PRIVATIZED HOUSING, HONORS HOUSING AND
INTERNATIONAL HOUSING, REGIONAL ENERGY PLANT —
PHASE II & PHASE III
Wilmington, North Carolina
For
UNC Wilmington
601 South College Road
Wilmington, NC 28403
[phone]
MAR 1 1 2009
BY:
February 2009
Prepared by:
NORRIS, KUSKE & TUNSTALL CONSULTING ENGINEERS, INC.
902 Market Street
Wilmington, North Carolina 28401
[phone]
[phone] (Fax)
NKT Project No. 06179-1

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