SW7100309_CURRENT PERMIT_20100324

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
SW
DOC TYPE
CURRENT PERMIT
APPROVED PLANS
❑ HISTORICAL FILE
❑ COMPLIANCE EVALUATION INSPECTION
DOC DATE
YYYYMMDD

w�
NCDENR
North Carolina Department of Environment and
Beverly Eaves Perdue
Division of Water Quality
Coleen H. Sullins
woo
Natural Resources
Dee Freeman
Governor Director Secretary
March 24. 2010
Mr. Jerry Fringeli, Assistant Refuge Manager
U.S. Fish and Wildlife Service
38 Mattamuskeet Road
Swan Quarter, NC 27885
Subject: Stormwater Permit No. SW7100309
Mattamuskeet National Wildlife Refuge Office [Visitor
Center and Out -Buildings
High Density / Redevelopment - Wet Pond Project
Hyde County
Dear Mr. Fringeli:
The Washington Regional Office received a complete Stormwater Management Permit
Application for Mattamuskeet National Wildlife Refuge / Visitor Center and Out -Buildings on
March 16, 2010. Staff review of the plans and specifications has determined that the project,
as proposed, will comply with the Stormwater Regulations set forth in Session Law 2008-211
and Title 15A NCAC 2H.1000. We are forwarding Permit No. SW7100309 dated March 24,
2010, for the construction of the subject project.
This permit shall be effective from the date of issuance until March 24, 2020, and shall be
subject to the conditions and limitations as specified therein. Please pay special attention to
the Operation and Maintenance requirements 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 150E 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
contact Samir Dumpor, or me at [phone].
kI.,
rdr
Regional Supervisor
Surface Water Protection Section
AH/ sd: K:\WQS\STORMWATER\SD\SW7100309
cc: Michael Hanson, PE, (Dewberry, 2301 Rexwoods Drive, Suite 200, Raleigh, NC
27607)
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North Carolina Division of Water Quality Internet: wuNa.ncwatcrqu_lity.org
943 Washington Square Mall Phone. [phone] One
Washington, NC 27889 PAX 252-946-9215 NorthCarOjina
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State Stormwater Management Systems
Permit No. SW7100309
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
U.S. Fish and Wildlife Service
Mattamuskeet National Wildlife Refuge Office/Visitor Center and Out -Buildings
Hyde County
FOR THE
construction, operation and maintenance of one wet detention pond in compliance with
the provisions of Session Law 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 24, 2020, and shall
be subject to the following specified conditions and limitations:
I. DESIGN STANDARDS
1. 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 of this permit. This is project is considered as
a Partial Redevelopment project. The Existing Impervious area on this site is
71,263 square feet, while the Proposed Impervious Area is 105,852 square feet,
hence the Required Impervious Area to be treated by stormwater controls is
34,589. The stormwater control has been designed to handle the runoff from
41,818 square feet of impervious area.
3. The tract will be limited to the amount of built -upon area indicated in Section I. of
this permit, and per approved plans.
4. All stormwater collection and treatment systems must be located in either
dedicated common areas or recorded easements. The final plats for the project
will be recorded showing all such required easements, in accordance with the
approved plans.
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.
6. The built -upon areas associated with this project shall be located at least 50 feet
landward of all perennial and intermittent surface waters.
Page 2 of 7

State Stormwater Management Systems
Permit No. SW7100309
7
The following design criteria have been provided in the wet detention pond and
must be maintained at design condition:
a. Drainage Area, ft2:
b. Total Impervious Surfaces, ftz:
C. Design Storm, inches:
d. Pond Depth - average, feet:
e. TSS removal efficiency:
f. Permanent Pool Elevation, FMSl :
g. Permanent Pool Surface Areq, ft
h. Permitted Storage Volume, ft :
i. Temporary Storage Elevation, FMSL:
j. Predevelopment 1 year 24 hour:
k. Post development 1 year 24 hour:
I. Controlling Orifice:
M. Permitted Forebay Volume, ft3:
n. Receiving Stream/River Basin: UT to
o. Stream Index Number:
P. Classification of Water Body:
II. SCHEDULE OF COMPLIANCE
63,169
41,818
1.5
3.0
90%
0.90
8,591
5,186 at temporary pool el
1.45
4.20 ft3/S
4.03 ft3/s
1.4" fd pipe
4,512
Outfall Canal / Tar -Pam River basin
29-57-1
"SC"
1. 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.
2. 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 time 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 re -vegetation of slopes and the vegetated filter strip.
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, level
spreader, filter strip, catch basins and piping.
g. Access to the outlet structure must be available at all times.
4. Records of maintenance activities must be kept for each permitted BMP. The
records will indicate the date, activity, name of person performing the work and
what actions were taken.
5. The permittee shall submit to the Division of Water Quality an annual summary
report of the maintenance inspection records for each BMP. The report shall
summarize the inspection dates, results of the inspections, and the maintenance
work performed at each inspection.
6. Access to the stormwater facilities shall be maintained via appropriate
easements at all times.
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 and specifications, and other
Page 3 of 7

State Stormwater Management Systems
Permit No. SW7100309
supporting data.
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.
9. 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.
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 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.
12. The permittee shall submit final site layout and grading plans for any permitted
future areas shown on the approved plans, prior to construction.
13. A copy of the approved plans and specifications shall be maintained on file by
the Permittee at all times.
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 completed Name/Ownership Change form, to the Division of Water
Quality, signed by both parties, and accompanied by supporting documentation
as listed on page 2 of the form. The project must be in good standing with the
Division. The approval of this request will be considered on its merits and may or
may not be approved.
2. The permittee is responsible for compliance with all permit conditions until such
time as the Division approves the transfer request.
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
Page 4 of 7

State Stormwater Management Systems
Permit No. SW7100309
accordance with North Carolina General Statute 143-215.6A to 143-215.6C.
4. 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.
5. 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.
6. 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.
7. The permit issued shall continue in force and effect until revoked or terminated.
The permit may be modified, revoked and reissued or terminated for cause. The
filing of a request for a permit modification, revocation and re -issuance or
termination does not stay any permit condition.
8. 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.
9. Approved plans and specifications for this project are incorporated by reference
and are enforceable parts of the permit.
10. The issuance of this permit does not prohibit the Director from reopening and,
modifying the permit, revoking and reissuing the permit, or terminating the permit
as allowed by the laws, rules and regulations contained in Session Law 2008-
211, Title 15A NCAC 21-1.1000, and NCGS 143-215.1 et.al.
11. The permittee shall notify the Division of any name, ownership or mailing
address changes at least 30 days prior to making such changes.
12. This permit shall be effective from the date of issuance until March 24, 2020.
Application for permit renewal shall be submitted 180 days prior to the expiration
date of this permit and must be accompanied by the processing fee.
Permit issued this the 24th day of March, 2010.
N RTHICAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
for
oleen H. Sullins, Director
Division of Water Quality
By Authority of the Environmental Management Commission
Stormwater Permit No. SW7100309
Page 5 of 7

5
State Stormwater Management Systems
Permit No. SW7100309
Mattamuskeet National Wildlife Refuge Office/Visitor Center and Out -Buildings
Stormwater Permit No. SW7100309
Hyde 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. SW7100309
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 Washington Regional Office
Hyde County Building Inspections
Page 7 of 7

State Stormwater Management Systems
Permit No. SW7100309
Mattamuskeet National Wildlife Refuge Office/Visitor Center and Out -Buildings
Stormwater Permit No. SW7100309
Hyde County
Designer's Certification
I, Mat+kt W & Wtst", as a duly registered .Ss:o.,ti ¢w `r%4&r in the
State of North Carolina, having been authorized to observe perio ica /4zlt
*;M) the construction of the project,
(Project)
for V.S. FiSk &44 WiIII&L SarvicQ. (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:
SEAL
Signature-UMAV— R/
Registration Number 031441 `����QSNICAR
`r0, oFESSj
Date OqI� bI
Page 6 of 7

Dare orormwarer ivwanagemenr oysrems
Permit No. SW7100309
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.
V or 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.
v/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.
yl 15. The required system dimensions are provided per the approved plans.
cc: NCDENR-DWQ Washington Regional Office
Hyde County Building Inspections
Page 7 of 7

•
DWQ USE ONLY
A
Fee Paid jf 2y
Permit Number
'Nv'sD
t� 1 333 ,3 [+*4
-i tooE'l
Applicable I
(select all thN )'
s�j astal SW —1995 ❑ Coastal SW 28 ❑ Ph II - Post Construction
l�'Non-Coastal SW- HQW/ORW Waters ❑ Universal Stormwater Management Plan
r WQ M mt Plan:
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. Project Name (subdivision, facility, or establishment name -should be consistent with project name on plans,
specifications, letters, operation and maintenance agreements, etc.):
Mattamuskeet National Wildlife Refuge Office/Visitor Center and Out -Buildings
2. Location of Project (street address):
38 Mattamuskeet Road
City:Swan Quarter County:NC Zip:27885
3. Directions to project (from nearest major intersection):
From the intersection of US 264 and NC 94 travel approximately 25 miles east on US 264. Turn left onto
Mattamuskeet Road and travel approximately 0 8 miles to the site which is on the left side of the road.
® 4. Latitude35° 27' 04" N Longitude:76° 10' 36" W of the main entrance to the project.
If. PERMIT INFORMATION:
1. a. Specify whether project is (check one): ®New ❑Modification
b.If this application is being submitted as the result of a modification to an existing permit, list the existing
permit number , its issue date (if known) and the status of
construction: ❑Not Started ❑Partially Completed* ❑ Completed* *provide a designer's certification
2. Specify the type of project (check one):
❑Low Density ®High Density ❑Drains to an Offsite Stormwater System ❑Other
3. If this application is being submitted as the result of a previously returned application or a letter from DWQ
requesting a state stormwater management permit application, list the stormwater project number, if
assigned, and the previous name of the project, if different than currently
proposed,
4. a. 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 ®Sedimentation/Erosion Control: 5 ac of Disturbed Area
❑NPDES Industrial Stormwater E404/401 Permit: Proposed Impacts 0.07 acres of wetland impacts
b.If any of these permits have already been acquired please provide the Project Name, Project/Permit Number,
issue date and the type of each permit: Included with this Express Review submittal.
404 submitted to US Arm Corps of Engineers on March 5 2010
•
Fonn SWU-101 Version 07Ju1y2009
Page I of 6

Ill. CONTACT INFORMATION
1. a. Print Applicant / Signing Official's name and title (specifically the developer, property owner, lessee,
designated government official, individual, etc. who owns the oroiect):
• Applicant/Organization:US Fish and Wildlife Service
Signing Official & Title:lerry Fringeli Assistant Refuge Manager
b.Contact information for person listed in item la above:
Street Address:38 Mattamuskeet Road
City:Swan Quarter State:NC Zip:27885
Mailing Address (if applicable):Same as above
City: State: Zip:
Phone: [phone] Fax: (252 ) 926-1743
c. Please check the appropriate box. The applicant listed above is:
® The property owner (Skip to Contact Information, item 3a)
❑ Lessee* (Attach a copy of the lease agreement and complete Contact Information, item 2a and 2b below)
❑ Purchaser* (Attach a copy of the pending sales agreement and complete Contact Information, item 2a and
2b below)
❑ Developer* (Complete Contact Information, item 2a and 2b below.)
2. a. Print Property Owner's name and title below, if you are the lessee, purchaser or developer. (This is the
person who owns the property that the project is located on):
Property Owner/1
Signing Official &
b.Contact information for person listed in item 2a above:
Street Address:
Mailing Address (if
Phone:
State:
Fax:
3. a. (Optional) Print the name and title of another contact such as the project's construction supervisor or other
person who can answer questions about the project:
Other Contact Person
Signing Official & Ti
b.Contact information for person listed in item 3a above:
Mailing Address:
City: State
Phone: ( 1 Fax:
• 4. Local jurisdiction for building permits: Hyde County NC
Point of Contact:lerry Hardison, Building Inspector Phone #: [phone]
Form SWU-101 Version 07Ju1y2009 Page 2 of 7

•
•
•
IV. PROJECT INFORMATION
1. In the space provided below, briefly summarize how the stormwater runoff will be treated.
The stormwater runoff for the project site will be treated using the Wet Detention Basin.
The control structure for the the wet detention basin is a combination of riser and barrel. The detention
storage will be recovered via an orifice in the face of the riser barrel.
The treatment volume is based on the difference between the existing and proposed impervious area volume
generated by 1.5 inches of precipitation depth
2. a. If claiming vested rights, identify the supporting documents provided and the date they were approved:
❑ Approval of a Site Specific Development Plan or PUDApproval Date:
❑ Valid Building Permit Issued Date:
❑ Other: Date:
b.Identify the regulation(s) the project has been designed in accordance with:
® Coastal SW —1995 ❑ Ph II —Post Construction
3. Stormwater runoff from this project drains to the Tar -Pamlico River basin.
4. Total Property Area: 4.77 acres
5. Total Coastal Wetlands Area: 0 acres
6. Total Surface Water Area: 0 acres
Total Property Area (4) — Total Coastal Wetlands Area (5) —Total Surface Water Area (6) = Total Project Area':
4.77 acres
Total project area shall be calculated to exclude the following: the nornml pool of impounded structures, the area
between the banks of streauns and rivers, the area below the Normal High Water (NHW) line or Mean High Water
(MHW) line, and coastal wetlands landward from the NHW (or MHW) line. The resultant project area is used to
calculate overall percent built upon area (BUA). Non -coastal wetlands landward of the NNW (or MHW) line cony be
included in the total project area.
8. Project percent of impervious area: (Total Impervious Area / Total Project Area) X 100 =
9. How many drainage areas does the project have? 4 (For high density, count 1 for each proposed engineered
stormwater BM P. For low density and other projects, use 1 for the whole property area)
10. Complete the following information for each drainage area identified in Project Information item 9. If there
are more than four drainage areas in the project, attach an additional sheet with the information for each area
provided in the same format as below.
Fonn SWU-101 Version 07.1uly2009 Page 3 of 7

•
Basin Information
Drainage Area _
Drainage Area _
Drainage Area _
Drainage Area
Receiving Stream Name
See Attached
Sheet
Stream Class *
Stream Index Number
Total Drainage Area (sf)
On -site Drainage Area (sf)
Off -site Drainage Area (so
Pro osed Impervious Area** (so
% Impervious Area** (total)
Im ervious" Surface Area
Drainage Area _
Drainage Area _
Drainage Area _
Drainage Area
On -site Buildings/Lots (sf)
On -site Streets (sl)
On -site Parking (so
On -site Sidewalks (so
Other on -site (sf)
Future (so
Off -site (so
Existing BUA*** (so
Total (sf):
Stream Class and Index Number can be determined at: http //h2o ear state.nc.uslbinis&cVorts&MortsWB.htnil
Impervious area is defined as the built upon area including, but not lintited to, buildings, roads, parking areas,
sidewalks, gravel areas, etc.
** Report only that anwunt of existing BUA that will remain after development. Do not report any existing BUA that is
to be removed and which will be replaced by new BUA.
• 11. How was the off -site impervious area listed above determined? Provide documentation. No off -site
impervious area contributes to the drainage areas listed above Off -site impervious area flows to existing
ditches/canals not impacted by this project
Projects in Union County: Contact DWQ Central Office staff to check if the project is located within a Threatened &
Endangered Species watershed that may be subject to more stringent stormwater requirements as per NCAC 02B .0600.
V. SUPPLEMENT AND O&M FORMS
The applicable state stormwater management permit supplement and operation and maintenance (O&M) forms
must be submitted for each BMP specified for this project. The latest versions of the forms can be downloaded
from htti2://h2o.enr.state.nc.us/su/bmi2 forms.htm.
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. A detailed application instruction sheet and BMP
checklists are available from htti2://h2o.ei)r.st-,ite.nc.us/su/bmp forms.htm. The complete application package
should be submitted to the appropriate DWQ Office. (The appropriate office may be found by locating project
on the interactive online map at httl2://h2o.enr.state.nc.us/su/msi maps.htm.)
Please indicate that the following required information have been provided by initialing in the space provided for
each item. All original documents MUST be signed and initialed in blue ink. Download the latest versions for
each submitted application package from http://h2o.enr.state.nc.us/su/bmi2 forms.htm.
Initials
1. Original and one copy of the Stormwater Management Permit Application Form. lick%
2. Original and one copy of the signed and notarized Deed Restrictions & Protective Covenants
Form. (if required as per Part VIl below) �II'. I
3. Original of the applicable Supplement Form(s) (scaled, signed and dated) and O&M I
agreement(s) for each BMP.
4. Permit application processing fee of $505 payable to NCDENR. (For an Express review, refer to
http•//www.envhelp.org/12ages/onestol2exi2ress.html for information on the Express program ~/
Fonn SWU-101 Version 07July2009 Page 4 of 7

r1
LJ
•
and the associated fees. Contact the appropriate regional office Express Permit Coordinator for
additional information and to schedule the required application meeting.)
5. A detailed narrative (one to two pages) describing the stormwater treatment/management for
the project. This is required in addition to the brief summary provided in the Project
Information, item 1.
6. A USCS map identifying the site location. If the receiving stream is reported as class SA or the
receiving stream drains to class SA waters within Fi mile of the site boundary, include the 1/z
mile radius on the map. ry� 7. Sealed, signed and dated calculations.
8. Two sets of plans folded to 8.5" x 14" (sealed, signed, & dated), including: AA'
a. Development/Project name.
b. Engineer and firm.
c. Location map with named streets and NCSR numbers.
d. Legend.
e. North arrow.
I. Scale.
g. Revision number and dates.
h. Identify all surface waters on the plans by delineating the normal pool elevation of
impounded structures, the banks of streams and rivers, the MHW or NHW line of tidal
waters, and any coastal wetlands landward of the MHW or NHW lines.
• Delineate the vegetated buffer landward from the normal pool elevation of impounded
structures, the banks of streams or rivers, and the MHW (or NHW) of tidal waters.
i. Dimensioned property/project boundary with bearings & distances.
j. Site Layout with all 13UA identified and dimensioned.
k. Existing contours, proposed contours, spot elevations, finished floor elevations.
1. Details of roads, drainage features, collection systems, and stormwater control measures.
m. Wetlands delineated, or a note on the plans that none exist. (Must be delineated by a
qualified person. Provide documentation of qualifications and identify the person who
made the determination on the plans.
n. Existing drainage (including off -site), drainage easements, pipe sizes, runoff calculations.
o. Drainage areas delineated (included in the main set of plans, not as a separate document).
p. Vegetated buffers (where required).
9. Copy of any applicable soils report with the associated SHWT elevations (Please identify
elevations in addition to depths) as well as a map of the boring locations with the existing
elevations and boring logs. Include an 8.5"x11" copy of the NRCS County Soils map with the
project area clearly delineated. For projects with infiltration BMPs, the report should also
include the soil type, expected infiltration rate, and the method of determining the infiltration rate.
(Infiltration Devices submitted to WiRO: Schedule a site visit for DWQ to verifi/ the SHWT prior
to submittal, [phone].)
10. A copy of the most current property deed. Deed book: Page No:
11. For corporations and limited liability corporations (LLC): Provide documentation from the NC
Secretary of State or other official documentation, which supports the titles and positions held
by the persons listed in Contact Information, item la, 2a, and/or 3a per NCAC 2H.1003(e). The
corporation or LLC must be listed as an active corporation in good standing with the NC
Secretary of State, otherwise the application will be returned.
httl2://www.secretary.state.nc.us/Corl2orations/CSearch.aspx
Form SWU-101 Version 07July2009
Page 5 of 7

VIL DEED RESTRICTIONS AND PROTECTIVE COVENANTS
For all subdivisions, outparcels, and future development, the appropriate property restrictions and protective
covenants are required to be recorded prior to the sale of any lot. If lot sizes vary significantly or the proposed
•BUA allocations vary, a table listing each lot number, lot size, and the allowable built -upon area must be provided
as an attachment to the completed and notarized deed restriction form. The appropriate deed restrictions and
protective covenants forms can be downloaded from
http://h2o.eiir.state.nc.us/su/bin12 forms.litm#deed restrictions. Download the latest versions for each submittal.
In the instances where the applicant is different than the property owner, it is the responsibility of the property
owner to sign the deed restrictions and protective covenants form while the applicant is responsible for ensuring
that the deed restrictions are recorded.
By the notarized signature(s) below, the permit holder(s) certify that the recorded property restrictions and
protective covenants for this project, if required, shall include all the items required in the permit and listed
on the forms available on the website, 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.
u
u
VIII. CONSULTANT INFORMATION AND AUTHORIZATION
Applicant: Complete this section if you wish to designate authority to another individual and/or firm (such as a
consulting engineer and/or firm) so that they may provide information on your behalf for this project (such as
addressing requests for additional information).
Consulting Engineer:Michael A Hanson. P.E.-
Consulting
Mailing Address:2301 Rexwoods Drive, Suite 200
City:Raleigh State:NC Zip:27607
Phone: (919 ) 881-9939
Email:[e-mail]
Fax: (919 ) 881-9923
IX. PROPERTY OWNER AUTHORIZATION (if Contact Information, item 2 has been filled out, complete this
section)
I, (print or type name of person listed in Contact Information, item 2a) 1 certify that I
own the property identified in this permit application, and thus give permission to (print or type name of person
listed in Contact Information, iteni in) with (print or type name of organization listed in
Contact Information, item 1b) to develop the project as currently proposed. A copy of
the lease agreement or pending property sales contract has been provided with the submittal, which indicates the
party responsible for the operation and maintenance of the stormwater system.
Form SWU-101 Version 07July2009 Page 6 of 7

As the legal property owner I acknowledge, understand, and agree by my signature below, that if my designated
agent (entity listed in Contact Information, item 1) dissolves their company and/or cancels or defaults on their
lease agreement, or pending sale, responsibility for compliance with the DWQ Stormwater permit reverts back to
me, the property owner. As the property owner, it is my responsibility to notify DWQ immediately and submit a
completed Name/Ownership Change Form within 30 days; otherwise I will be operating a stormwater treatment
facility without a valid permit. I understand that the operation of a stormwater treatment facility without a valid
permit is a violation of NC General Statue 143-215.1 and may result in appropriate enforcement action including
the assessment of civil penalties of up to $25,000 per day, pursuant to NCGS 143-215.6.
Signature: Date:
I, a Notary Public for the State of County of
do hereby certify that personally appeared
before me this _ day of . and acknowledge the due execution of the application for a
stormwater permit. Witness my hand and official seal,
SEAL
My commission
X. APPLICANT'S CERTIFICATION
® I, (print or type name of person listed in Contact Information, item 2) Ierr4 Fringeli, US Fish and Wildlife Service
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 the
applicable stormwater rules under 15A NCAC 2H .1000, SL 2006-246 (Ph. I1- Post Construction) or SL 2008-211.
Signature: Date: ! �3 O
I, Ike' O a Notary Public for the State of Acd-' Caevrloa, ounty of
4ydL do hereby certify that Se»' 9, I personally appeared
before me this d3�cay of N oV ewe 17 e r and acknowledge the due execution of the application for a
stormwater permit. Witness my hand and official seal, /-Q-Q-44A,�O-P* `P • CaA
� llY.1�. G<_
1: a
• �; _1 w� V �ii !I
•
SEAL
My commission
141 !I laoll
Form SWU-101 Version 07July2009
Page 7 of 7

Basin Information
Drainage Area A_
Drainage Area B1
Drainage Area 62
Drainage Area B3
Drainage Area B4
Receving Stream Name
Tributary to Outfall
Canal
Tributary to Outfall
Canal
Tributary to Outfall
Canal
Tributary to Outfall
Canal
Tributary to Outfall
Canal
Stream Class '
SC
Sc
SC
SC
SC
Stream Index Number
29-5 1
29-671
29-5-7--1
29-57-1
29-57-1
Total Drainage Area (so
86,005
9,698
63,169
31,573
20,505
On -site Drainage Area (so
86,005
9,698
63,169
31,573
0
Off -site Drainage Area (so
0
0
0
0
20.505
Proposed Impervious Area ** (sf)
51,532
5,412
63,169
14,033
0
Impervious Area ** (total)
60% 1
56%
100%
44%
0%
Impervious Surface Area
Drainage Area A_
Drainage Area B1
Drainage Area B2
Drainage Area B3
Drainage Area B4
On -site Buildings/Lots (sf)
605
0
12,400
0
0
On -site Streets (so
0
0
0
0
0
On -site Parkin (so
6,876
0
19,700
1,066
0
On -site Sidewalks (sf)
0
0
0
255
0
Other on -site (sf)
0
0
1 t
0
0
Future (sf)
0
0
0
0
0
Off -site (so
0
0
0
0
0
BUA *** (sf)
Existing12
44,051
5,4,446
9
12,712
0
Total (so:
1 51,532
5,412
1 —63469
14,033
0
-Ajl�xti r, Sly
Stream class and Index Number can be determined at. http://h20.enr.state.nc.us/bims/reports/reportsWEI.html
Impervious area is defined as the built upon area including, but not limited to, buildings, roads, parking areas, sidewalks,
gravel areas, etc.
Report only that amount of existing BUA that will remain after development. Do not report any existing BUA that is to be
removed and which will be replaced by new BUA.
C4.�'IiE_�

EXPRESS- Permit Number:
(to be provided by DWQ)
MAR 1.6 2010 Drainage Area Number:
• eb2gtion Basin Operation and Maintenance Agreement
•
•
I will keep a maintenance record on this BMP. This maintenance record will be kept in a
log in a known set location. Any deficient BMP elements noted in the inspection will be
corrected, repaired or replaced immediately. These deficiencies can affect the integrity
of structures, safety of the public, and the removal efficiency of the BMP.
The wet detention basin system is defined as the wet detention basin,
pretreatment including forebays and the vegetated filter if one is provided.
This system (check one):
❑ does ® does not
This system (check one):
❑ does ® does not
incorporate a vegetated filter at the outlet.
incorporate pretreatment other than a forebay.
Important maintenance procedures:
— Immediately after the wet detention basin is established, the plants on the
vegetated shelf and perimeter of the basin should be watered twice weekly if
needed, until the plants become established (commonly six weeks).
— No portion of the wet detention pond should be fertilized after the first initial
fertilization that is required to establish the plants on the vegetated shelf.
— Stable groundcover should be maintained in the drainage area to reduce the
sediment load to the wet detention basin.
— If the basin must be drained for an emergency or to perform maintenance, the
flushing of sediment through the emergency drain should be minimized to the
maximum extent practical.
— Once a year, a dam safety expert should inspect the embankment.
After the wet detention pond is established, it should be inspected once a month and
within 24 hours after every storm event greater than 1.0 inches (or 1.5 inches if in a
Coastal County). Records of operation and maintenance should be kept in a known set
location and must be available upon request.
Inspection activities shall be performed as follows. Any problems that are found shall
be repaired immediately.
BMP element:
Potentialproblem:
How I will remediate theproblem:
The entire BMP
Trash/debris is present.
Remove the trash/debris.
The perimeter of the wet
Areas of bare soil and/or
Regrade the soil if necessary to
detention basin
erosive gullies have formed.
remove the gully, and then plant a
ground cover and water until it is
established. Provide lime and a
one-time fertilizer application.
Vegetation is too short or too
Maintain vegetation at a height of
long.
approximately six inches.
Form SW401-Wet Detention Basin O&M-Rev.4
Page 1 of 4

•
•
•
Permit Number:
(to be provided by DWQ)
Drainage Area Number:
BMP element:
Potentialproblem:
How I will remediate theproblem:
The inlet device: pipe or
The pipe is clogged.
Unclog the pipe. Dispose of the
swale
sediment off -site.
The pipe is cracked or
Replace the pipe.
otherwise damaged.
Erosion is occurring in the
Regrade the swale if necessary to
swale.
smooth it over and provide erosion
control devices such as reinforced
turf matting or riprap to avoid
future problems with erosion.
The forebay
Sediment has accumulated to
Search for the source of the
a depth greater than the
sediment and remedy the problem if
original design depth for
possible. Remove the sediment and
sediment storage.
dispose of it in a location where it
will not cause impacts to streams or
the BMP.
Erosion has occurred.
Provide additional erosion
protection such as reinforced turf
matting or riprap if needed to
prevent future erosion problems.
Weeds are present.
Remove the weeds, preferably by
hand. If pesticide is used, wipe it on
the plants rather than spraying.
The vegetated shelf
Best professional practices
Prune according to best professional
show that pruning is needed
practices
to maintain optimal plant
health.
Plants are dead, diseased or
Determine the source of the
dying.
problem: soils, hydrology, disease,
etc. Remedy the problem and
replace plants. Provide a one-time
fertilizer application to establish the
ground cover if a soil test indicates
it is necessary.
Weeds are present.
Remove the weeds, preferably by
hand. If pesticide is used, wipe it on
the plants rather than spraying.
The main treatment area
Sediment has accumulated to
Search for the source of the
a depth greater than the
sediment and remedy the problem if
original design sediment
possible. Remove the sediment and
storage depth.
dispose of it in a location where it
will not cause impacts to streams or
the BMP.
Algal growth covers over
Consult a professional to remove
50% of the area.
and control the algal growth.
Cattails, phragmites or other
Remove the plants by wiping them
invasive plants cover 50% of
with pesticide (do not spray).
the basin surface.
Form SW401-Wet Detention Basin O&M-Rev.4
Page 2 of 4

•
Permit Number:
(to be provided by DWQ)
Drainage Area Number:
BMP element:
Potentialproblem:
How 1 will remediate theproblem:
The embankment
Shrubs have started to grow
Remove shrubs immediately.
on the embankment.
Evidence of muskrat or
Use traps to remove muskrats and
beaver activity is present.
consult a professional to remove
beavers.
A tree has started to grow on
Consult a dam safety specialist to
the embankment.
remove the tree.
An annual inspection by an
Make all needed repairs.
appropriate professional
shows that the embankment
needs re air. if applicable)
The outlet device
Clogging has occurred.
Clean out the outlet device. Dispose
of the sediment off -site.
The outlet device is damaged
Repair or replace the outlet device.
The receiving water
Erosion or other signs of
Contact the local NC Division of
damage have occurred at the
Water Quality Regional Office, or
outlet.
the 401 Oversight Unit at 919-733-
1786.
The measuring device used to determine the sediment elevation shall be such
• that it will give an accurate depth reading and not readily penetrate into
accumulated sediments.
C, J
When the permanent pool depth reads 40 feet in the main pond, the sediment
shall be removed.
When the permanent pool depth reads 2.5 feet in the forebay, the sediment
shall be removed.
BASIN DIAGRAM
(fill in the blanks)
Permanent Pool Elevation+0.9
Sediment Removal . -1_6 I Pe manen Pool
---- --♦--- Volume Sediment Removal I'levalion -3.1 VOlum
Bottom Elevation -2.6 T I-R Min.
----------------------------- -- -------
Sediment
Storage
FORE13AY
Bottom Elevation
MAIN POND
I-ft n.
Sediment
Storage
Form SW401-Wet Detention Basin O&M-Rev.4
Page') of 4

Permit Number:
(to be provided by DWQ)
• [.acknowledge and agree by my signature below that I am responsible for the
performance of the maintenance procedures listed above. I agree to notify DWQ of any
problems with the system or prior to any changes to the system or responsible party.
•
Project name:Mattamuskeet National Wildlife Refuge OfficeNisitor Station and Out-
BMP drainage area number:
Print
Title:Refuge Manager
Address:38 Mattamuskeet Road, Swan Quarter, NC 27885
Date: /Z-I/0�
Note: The legally responsible party should not be a homeowners association unless more than 50% of
the lots have been sold and a resident of the subdivision has been named the president.
1, Deborah P. C-Ght✓vI-. , allotary Public for the State of
Nord, Cave I i o a County of U vd -el do hereby certify that
Brute- (:reske personally appeared before me this 21Sk
day of 5eo Fewt bev , 7ooG , and acknowledge the due execution of the
forgoing wet detention basin maintenance requirements. Witness my hand and official
seal,
SEAL
• My commission expires 041 11 12011
Form SW40I-Wet Detention Basin O&M-Rev.4 Page 4 of 4

r_i_r,�,
•
•
0

Permit
EXPRESS
(to be provided by DINO)
MAR 1..6 2010
M NC DFFENR
NCDENR
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
WET DETENTION BASIN SUPPLEMENT
This ton must be filled out, printed and submitted.
The Required Items Checklist (Part IIIJ must be printed, filled out and submitted along with all of the required information.
O20p W A 7F9OG
2 T
Nil
> r
o
I. PROJECT INFORMATION -
Project name Maftamuskeet National Wildlife Refuge Office/Visitor Station and Out -Buildings
Contact person Michael A. Hanson, PE
Phone number 919-881-9939
Date 8-Feb10
Drainage area number Basin B2
111. DESIGN INFORMATION
Site Characteristics
b i 11 y9 1
/
V
Drainage area
-43,848 It,�\,1{I`\T,
Impervious area, post -development
41,818 tt3
impervious
'+e9 o 66%
—0:5in
1•5'
Design rainfall depth
Storage Volume: Non -SA Waters
Minimum volume required
tt3
Volume provided
tt3
•Storage Volume: SA Waters
1.5' runoff volume ( 4,966 tt3
Pre -development 1-yr, 24hr runoff 2,124 rya
Post -development 1-yr, 24-hr runoff 6,241 ff3
Minimum volume required 4,966 n3 ✓
Volume provided 5,186 rya
Peak Flow Calculations
Is the pre/post control of the Iyr 24hr storm peak flow required?
N (Y or N)
1-yr, 24-hr rainfall depth
0.5 in
Rational C, pre -development
0.31 (unitless)
Rational C, post -development
0.90 (unitless)
Rainfall intensity: 1-yr. 24-hr storm
5.68 in/hr OK
Pre -development 1-yr, 24-hr peak flow
4.20 ff3/sec
Post -development 1-yr, 24-hr peak flow
4.03 rya/sec
Pre/Post 1-yr, 24-hr peak flow control
-0.17 ff3/sec
Elevations
Temporary pool elevation
1.45 fmsl
Permanent pool elevation
0.90 fmsl ✓
SHWT elevation (approx. at the perm. pool elevation)
1.40 fmsl {�
Top of 1011 vegetated shelf elevation
1.40 fmsl
Bottom of 1011 vegetated shelf elevation
0.40 fmsl t/
Sediment cleanout, top elevation (bottom of pond)
-3.10 fmsl ✓
Sediment cleanout, bottom elevation
-4.10 fmsl
Sediment storage provided
1.00 It
Is there additional volume stored above the state -required temp. pool? N (Y or N)
• Elevation of the top of the additional volume fmsl
Form SW401-Wet Detention Basin-Rev.9-9117/09 Pan I. S It. Design Summary, Page 1 of 2

Permit
(to be provided by DWO)
II. DESIGN INFORMATION
Surface Areas
temporary pool
10,191 ft'
•Area,
Area REOUIRED, permanent pool
5,018 ft'
4gvo
SAIDA ratio
12.00 (unitless)
Area PROVIDED, permanent pool, A,. wy
8,591 ft' y
OK
Area, bottom of 1 Oft vegetated shelf, Aw e„r
6,922 ft'
Area, sediment cleanout, top elevation (bottom of pond), A..,
3,544 ft'
Volumes
Volume, temporary pool
5,186 ft'
OK
Volume, permanent pool, Vmm p,
20,757 ft'
Volume, forebay (sum of forebays if more than one forebay)
4,512 fts
Forebay % of permanent pool volume
21.7% %
OK
SAIDA Table Data
Design TSS removal
90 % 11/
Coastal SAIDA Table Used?
Y (Y or N)
Mountain/Piedmont SAIDA Table Used?
N (Y or N)
SAIDA ratio
12 na {unitless)
7X
Average depth (used in SA/DA table):
Calculation option 1 used? (See Figure 10.2b)
N (Y or N)
Volume, permanent pool, Va...
20,757 ft'
Area provided, permanent pool, A,._.
8,591 ft
Average depth calculated
3.00 ft
OK
Average depth used in SA/DA, dw, (Round to nearest 0.5ft)
3.0 It
OK
Calculation option 2 used? (See Figure 10-2b)
Y (Y or N)
Area provided, permanent pool, At....,
8,591 ft'
Area, bottom of 1 Oft vegetated shelf, Aw e,an
6,922 ft'
Area, sediment cleanout, top elevation (bottom of pond), A,_.
3,514 ft'
•"Depth'
(distance b/w bottom of 1Oft shelf and top of sediment)
3.50 ft
Average depth calculated
3.00 ft
OK
Average depth used in SAIDA, d,.., (Round to nearest 0.511)
3.0 ft
OK
Drawdown Calculations
Draw town through orifice?
Y . �{ or N)
Diameter of orifice (if circular)
1.40 in ✓
Area of orifice (if -non -circular)
In
Coefficient of discharge (Co)
0.60 (unitless)
Driving head (He)
0.18 ft
Drawdown through weir?
N (Y or N)
Weir type
(unitless)
Coefficient of discharge (C„.)
(unitless)
Length of weir (L)
ft
Driving head (H)
It
Pre -development 1-yr, 24-hr peak flow
4.20 fts/sec
Post -development 1-yr, 24-hr peak flow
4.03 ft'/sec
Storage volume discharge rate (through discharge orifice or weir)
4.03 fts/sec
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 & orifice?
Freeboard provided
•Vegetated filter provided?
Recorded drainage easement provided?
Capures all runoff at ultimate build -out?
Drain mechanism for maintenance or emergencies is:
Form SW401-Wet Detention Basin-Rev.8-9I17109
2.40 days
3 :1
10 :1
10.0 ft
3 :1
1.5 :1
Y
(Y or N)
1.1 ft
N
(Y or N)
Y
(Y or N)
Y
(Y or N)
OK, draws down in 2-5 days.
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
use valve
Pans I. & II. Design Summary, Page 2 of 2

• III. REQUIRED ITEMS CHECKLIST
•
•
Permit No.
(to be provided by DWO)
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.
C - 1 0 4
1. Plans (1" - 50' or larger) of the entire site showing:
Ap &4,,Uy q
Design at ultimate build -out,
Off -site drainage (if applicable),
Delineated drainage basins (include Rational C coefficient per basin),
C,-\\Y
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.
l \
2. Partial plan (1" = 30' or larger) and details for the wet detention basin showing:
- Outlet structure with trash rack or similar,
- Maintenance access,
- Permanent pool dimensions,
- Forebay and main pond with hardened emergency spillway,
- Basin cross-section,
- Vegetation specification for planting shelf, and
- Filter strip.
6-il
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.
ADS G
5. A table of elevations, areas, incremental volumes & accumulated volumes for overall pond and for forebay,
to verify volume provided.
C - t t
6. A construction sequence that shows how the wet detention basin will be protected from sediment until the
entire drainage area is stabilized.
/
*U
Afty a (,
7. The supporting calculations.
A4,/
Affto!�: X B
8. A copy of the signed and notarized operation and maintenance (0&M) agreement.
44
9. A copy of the deed restrictions (if required).
l&t L
AIPT& �
10. A soils report that is based upon an actual field investigation, soil borings, and infiltration tests. County
soil maps are not an acceptable source of soils information.
Form SW401-Wet Detention Basin-Rev.8-9/17/09
Part III. Required Items Checklist, Page 1 of 1