SW7061114_CURRENT PERMIT_20070201

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO..SW
DOC TYPE
CURRENT PERMIT
APPROVED PLANS
❑ HISTORICAL FILE
❑ . COMPLIANCE EVALUATION INSPECTION
DOC DATEjIU�D
0
YYYYMMDD

W'4 rFRQ Michael F. Easley, Governor O
�0 G William G. Ross Jr., Secretary
rNorth Carolina Department of Environment and Natural Resources
O Y Alan W. Klimek, P.E. Director
Division of Water Quality
February 1, 2007
St, John's Church of Christ
Attn.: Allen Roberson
2283 St John's Church Road
Washington, NC 27889
Subject Permit No. SW7061114
St. John's Church of Christ
High Density Stormwater Project
Beaufort County
Dear Mr. Roberson:
The Washington Regional Office received a completed Stormwater Application for the subject project on
November 15, 2006. 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.
SW7061114 dated February 1, 2007 to St. John's Church of Christ for two wet detention ponds to serve the St
John's Church of Christ located along SR 1424, St. John's Church Road in Washington, NC.
This permit shall be effective from the date of issuance until February 1, 2017 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. The issuance of this permit does not resolve any
previous violations of the stornwater rules for construction without a permit.
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 forth of a written petition, conforming to Chapter 150E of the North Carolina General Statutes,
and filed with the Office of Administrative Hearings, 6714 Mail Service Center, Raleigh, NC 27699-6714. 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
Dumper or me at [phone].
S cerely
AI edge, Regional upe isor
Surface Water Protection Section
Washington Regional Office
cc: J. Stephen Janowski, PE, Baldwin and Associates
Beaufort County Building Inspections Department
,, ashington Regional Office
Central Files
North Carolina Division of Water Quality Internet: �c�� �c.nemaier�uul iteur!citcur!c
943 Washington Square Mall Phone [phone]
Washington, NC 27889 Fax [phone]
NorthCarolina
Naturally
An Equal Opportunity/Affirmative Action Employer— 50°b Recydedll0% Post Consumer Paper

State Stormwater Management Systems
Permit No. SW7061114
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
St. John's Church of Christ
Beaufort County
FOR THE
construction, operation and maintenance of stormwater management systems in compliance with the provisions of
15A NCAC 21-1.1000 (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 for two wet detention ponds to serve the St. John's Church of Christ
located along NCSR 1424, St. John's Church Road in Washington, NC.
This permit shall be effective from the date of issuance until February 1, 2017 and shall be subject to the following
specified conditions and limitations:
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 on pages
2 and 3 of this permit, the Project Data Sheet.
3. A maximum of 115,132 square feet of built upon area is allowed on this 5.70 acre site.
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 approved plans.
5. Approved plans and specifications for this project are incorporated by reference and are enforceable parts of
the permit.

DIVISION OF WATER QUALITY
EAST POND - PROJECT DATA
Project Name:
St. John's Church of Christ
Permit Number:
SW7061114
Location:
Beaufort County
Applicant:
St. John's Church of Christ
Mailing Address:
2283 St. John's Church Road
Washington, NC 27889
Application Date:
11/15/2006
Receiving Stream:
Big Swamp
Classification of Water Body:
C; Sw, NSW
Total Site Area:
5.70 ac
Drainage area:
2.79 ac
Total Impervious allowed on site:
60,356 sf
Wet Pond Depth:
3.0 ft
Required Storage Volume:
4,651 cf
Provided Storage Volume:
4,643 cf
Required Surface Area:
4,652 sf
Provided Surface Area:
5,580 sf
Controlling Orifice:
1.0 inch @ elevation 96.50 ft

DIVISION OF WATER QUALITY
WEST POND - PROJECT DATA
Project Name:
St. John's Church of Christ
Permit Number:
SW7061114
Location:
Beaufort County
Applicant:
St. John's Church of Christ
Mailing Address:
2283 St. John's Church Road
Washington, NC 27889
Application Date:
11/15/2006
Receiving Stream:
Big Swamp
Classification of Water Body:
C; Sw, NSW
Total Site Area:
5.70 ac
Drainage area:
2.95 ac
Total Impervious allowed on site:
54,776 sf
Wet Pond Depth:
3.0 ft
Required Storage Volume:
5,033 cf
Provided Storage Volume:
5,033 cf
Required Surface Area:
5,104 sf
Provided Surface Area:
5,580 sf
Controlling Orifice:
1.0 inch @ elevation 97.00 ft

4. No homeowner/lot owner/developer shall be allowed to fill in, alter, or pipe any vegetative practices (such as
swales) shown on the approved plans as part of the stormwater management system without submitting a
revision to the permit and receiving approval from the Division.
5. The following items will require a modification to the permit:
a. Any revision to the approved plans, regardless of size
b. Project name change
C. Transfer of ownership
d. Redesign or addition to the approved amount of built -upon area
e. Further subdivision of the project area.
In addition, the Director may determine that other revisions to the project should require a modification to the
permit.
6. 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.
II. SCHEDULE OF COMPLIANCE
The permittee will comply with the following schedule for construction and maintenance of the stormwater
management system.
a. 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 surfaces except roads.
b. During construction, erosion shall be kept to a minimum and any eroded areas of the system will be
repaired immediately.
2. The facilities must be properly maintained and operated at all times. The approved Operation and
Maintenance Plan must be followed in its entirety and maintenance must occur at the scheduled intervals.
3. The permittee shall at all times provide the operation and maintenance necessary to assure the permitted
stormwater system functions at optimum efficiency including, but not limited to:
a. Semiannual scheduled inspections (every 6 months)
b. Sediment removal
C. Mowing and revegetation of side slopes
d. Immediate repair of eroded areas
e. Maintenance of side slopes in accordance with approved plans and specifications
f. Debris removal and unclogging of outlet structure, orifice device and catch basins and piping.
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.
5. This permit shall become voidable unless the facilities are constructed in accordance with the conditions of
this permit, the approved plans and specifications, and other supporting data.
6. Upon completion of construction 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. Mail the Certification to the Washington Regional Office, 943 Washington Square Mall,
Washington, North Carolina, 27889, attention Division of Water Quality.

A copy of the approved plans and specifications shall be maintained on file by the Permittee for a minimum of
five years from the date of the completion of construction.
III. GENERAL CONDITIONS
This permit is not transferable. In the event there is a desire for the facilities to change ownership, or there is
a name change of the Permittee, a formal permit request must be submitted to the Division of Water Quality
accompanied by an application fee, documentation from the parties involved, and other supporting materials
as may be appropriate. The approval of this request will be considered on its merits and may or may not be
approved.
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-
215.6(a) to 143-215.6(c).
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)
which have 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 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.
6. The Permittee, at least six (6) months prior to the expiration of this permit, shall submit in writing a request for
an extension along with appropriate application fee.
Permit issued this the first day of February, 2007.
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
for Alan W. Klimek, P.E. Director
Division of Water Quality
By Authority of the Environmental Management Commission
Permit Number SW7061114

St. John's Church of Christ
Stormwater Permit No. SW7061114
Designers Certification
I, as a duly
Registered Professional Engineer 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.
Signature
Registration Number
Date
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.

sY11 �l� �fti 189tIt�!
. orrlcl: use oNLr
Date Received Fee Paid Permit Number
IL NOV 15 2006
D VVARO State of North Carolina sY&—K hIIA-16(p
Department of Environment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
This form may he photocopied for use as an original
I. GENERAL INFORMATION
1. Applicants name (specify the name of the corporation, individual, etc. who owns the project):
St. Johns Church of Christ
2. Print Owner/Signing Official's name and title (person legally responsible for facility and compliance):
Allen Roberson, Building Committee Chairman
3. Mailing Address for person listed in item 2 above:
2283 St. Johns Church
City: Washington State: NC zip: 27889
Telephone Number: ( 252 ) 975-2321
4. Project Name (subdivision, facility, or establishment name -should be consistent with project name on plans,
specifications, letters, operation and maintenance agreements, etc.):
St. Johns Church of Christ
5. Location of Project (street address):
SR 1424 St. Johns Church Road
City: Washington County: Beaufort
6. Directions to project (from nearest major intersection):
Drive north on Hwy 17 to Hwy 171. Turn right on Hwy 171. Turn right on St.
Johns Church Road and go approximately .6 mile and project is on the left.
7. Latitude: N 3Y 39.466
W 770 0.605
8. Contact person who can answer questions about the project:
of project
Nance: J.S. Janowski Telephone Number: ( 252 ) 756-1390
II. PERMIT INFORMATION:
1. Specify whether project is (check one): _0✓ New _=_Renewal = Modification
Form SWU-101 Version 3.99 Pagel of4

7. How was the off -site impervious area listed above derived? N/A
IV. DEED RESTRICTIONS AND PROTECTIVE COVENANTS
The following italicized deed 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 dot number, size and the allowable built -upon area for each lot must be provided as an attachment.
1. The following covenants are intended to ensure ongoing compliance with state stormwater management permit number
N/A as issued by the Division of Water Quality. These covenants may not be
changed or deleted without the consent of the State.
2. No more than 115,132 square feet of any lot shall be covered by structures or impervious materials.
Impervious materials include asphalt, gravel, concrete, brick, stone, slate or similar material but do not include wood
decking or the water surface of swimming pools.
3. Swales shall not be filled in, piped, or altered except as necessary to provide driveway crossings.
4. Built -upon area in excess of the permitted amount requires a state stormwater management permit modification prior to
construction.
5. All permitted runoff from outparcels or future development shall be directed into the per stormwater control
system. These connections to the stormwater control system shall be performed in a manner that maintains the integrity
and performance of the system as permitted.
By your signature below, you certify that the recorded deed restrictions and protective covenants for this project
shall include all the applicable items required above, 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 State, and that they will be recorded prior to the sale of any lot.
V. . SUPPLEMENTFORMS
The applicable state stormwater management permit supplement fornt(s) listed below must be submitted for each
BMP specified for this project. Contact the Stormwater and General Permits Unit at [phone] for the status
and availability of these forms.
Form SWU-102
Wet Detention Basin Supplement
Form SWU-103
Infiltration Basin Supplement
Form SWU-104
Low Density Supplement.
Form SWU-105
Curb Outlet System Supplement
Form SWU-106
Off -Site System Supplement
Form SWU-107
Underground Infiltration Trench Supplement
Form SWU-108
Neuse River Basin Supplement
Form SWU-109
Innovative Best Management Practice Supplement
Form SWU-101 Version 3.99 Page 3 of

2. If this application is being submitted as the result of a renewal or modification to an existing permit, list the
existing permit number and its issue date (if known)
3. Specify the type of project (check one):
_[]_Low Density -� High Density _Q_Redevelop _®_General Permit ._F--1 Other
4. Additional Project Requirements (check applicable blanks):
CAMA Major Sedimentation/Erosion Control 404/401 Permit QNPDES Stormwater
Information on required state permits can he obtained by contacting the Customer Service Center at
1-877-623-6748.
III. PROJECT INFORMATION
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 first 1 inch of run-off from the building and parking lot will be collected in a storm drainage swale
system and discharged thru one of two wet detention basins. One on the east side and one on the west
side.
2. Stormwater runoff from this project drains to the
Tar Pamlico
River basin.
3. Total Project Area: 5.70 acres 4. Project Built Upon Area: 46.046
5. How many drainage areas does the project have? 1
6. 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.
Basin Information` ,.
Drainage Area`1 ,:'(VVeSY),
;'! ' Drainage Area 2 , (east)`
Receiving Stream Name
Biq Swamp
Big Swamp
Receiving Stream Class
C, Sw, NSW
C, Sw, NSW
Drainage Area
121,532 sf 2.79 ac
128,502 sf (2.95 ac)
Existing Impervious* Area
0 Sf
0 Sf
Proposed Impervious"Area
60,356 sf
54,776 sf
% Impervious" Area (total)
49.66%
42.63%
Impervious* Strrface Area
Drainage Area I '`
'Drainage Area 2
On -site Buildings
14,580 sf
14,580 sf
On -site Streets
0 sf
0 Sf
On -site Parking
43,346 sf
37,766 sf
On -site Sidewalks
2,430 sf
2,430 sf
Other on -site
Offsite
Total: 60,356 sf
Total: 54,776 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 Version 3.99 Page 2 of

VI. SUBMITTAL REQUIREMENTS
Only complete application packages will be accepted and reviewed by the Division of Water Quality (DWQ).
A complete package includes all of the items listed below. The complete application package should be
submitted to the appropriate DWQ Regional Office.
1. Please indicate that you have provided the following required information by initialing in the space provided
. next to each item. f,
• Original and one copy of the Stormwater Management Permit Application Form
• One copy of the applicable Supplement Form(s) for each BMP
• Permit application processing fee of $420 (payable to NCDENR)
• Detailed narrative description of stormwater treatment/management
• Two copies of plans and specifications, 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, please complete this section.
Designated agent (individual or firm): Baldwin & Associates
Mailing Address: 1015 Conference Drive
City: Greenville
Phone: ( 252 ) 756-1390
VIII. APPLICANT'S CERTIFICATION
State: NC Zip: 27858
Fax: ( 252 ) 321-1412
I, (print or type name ofperson listed in Cencral Information, item 2) Allen Roberson
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, a that the proposed project complies with the requirements of 15A
NCAC 2H .1000. /2/ff A
Date: toh21DIb
Form SWU-101 Version 3.99 Page 4 of

RECF��f�G�
Permit No.
FEB 0 1 M (to be provided by DLVQ)
State of North Carolina
Dep`h't-mght-off Environment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
WET DETENTION BASIN SUPPLEMENT
This form may be photocopied for use as an original
DWQ Stormwater Manaeenment Plan Review:
A complete stormwater management plan submittal includes an application form, a wet detention basin
supplement for each basin, design calculations, and plans and specifications showing all basin and outlet
structure details.
I. PROJECT INFORMATION (EAST BASIN)
Project Name: St. Johns Church of Christ
Contact Person: J. Stephen Janowski, PE Phone Number: (252 )756-1390
For projects with multiple basins, specify which basin this worksheet applies to:
elevations
Basin Bottom Elevation
Permanent Pool Elevation
Temporary Pool Elevation
areas
Permanent Pool Surface Area
Drainage Area
Impervious Area
volumes
Permanent Pool Volume
Temporary Pool Volume
Forebay Volume
Other parameters
SA/DAI
Diameter of Orifice
Design Rainfall
Design TSS Removal 2
FormSWU-102 Rev3.99
93.50 ft. (floor of the basin)
96.50 ft. (elevation of the orifice)
97.25 ft. (elevation of the discharge structure overflow
5580 sq. ft. (water surface area at the orifice elevation)
2•95 ac. (on -site and of -site drainage to the basin)
1.26 ac. (on -site and off -site drainage to the basin)
6073 cu. ft. (combined volume of main basin and.forebay)
4643 cu. ft. (volume detained above the permanent pool)
1360 cu. ft. (approximately 20%oftotal volume)
3.62 (surface area to drainage area ratio from DWQ table)
1 in. (2 to 5 day temporary pool draw -down required)
1 in.
85 % (mininnnn85%required)
Page I of 4

Footnotes:
When using the Division SA/DA tables, the correct SA/DA ratio for permanent pool sizing should be computed based upon the
actual impervious % and permanent pool depth. Linear interpolation should be employed to determine the correct value for non-
standard table entries.
In the 20 coastal counties, the requirement for a vegetative filter may be waived if the wet detention basin is designed to provide
90%TSS removal. The NCDENR BMP manual provides design tables for both 85% TSS removal and 90% TSS removal.
H. REQUIRED ITEMS CHECKLIST
The following checklist outlines design requirements per the Stormwater Best Management Practices Manual
(N.C. Department of Environment, Health and Natural Resources, February 1999) and Administrative Code
Section: 15 A NCAC 2H .1008.
Initial in the space provided to indicate the following design requirements have been met and supporting
documentation is attached. If the applicant has designated an agent in the Stormwater Management Permit
Application Fonn, the agent may initial below. If a requirement has not been met, attach justification.
Is
a. The permanent pool depth is between 3 and 6 feet (required minimum of 3 feet).
b. The forebay volume is approximately equal to 20% of the basin volume.
c. The temporary pool controls runoff from the design stoma event.
d. The temporary pool draws down in 2 to 5 days.
e. If required, a 30-foot vegetative filter is provided at the outlet (include non -erosive flow
calculations)
f. The basin length to width ratio is greater than 3: I.
g. The basin side slopes above the permanent pool are no steeper than 3:1.
h. A submerged and vegetated perimeter shelf with a slope of 6:1 or less (show detail).
i. Vegetative cover above the permanent pool elevation is specified.
j. A trash rack or similar device is provided for both the overflow and orifice.
k. A recorded drainage easement is provided for each basin including access to nearest right-
of-way.
I. If the basin is used for sediment and erosion control during construction, clean out of the
basin is specified prior to use as a wet detention basin.
in. A mechanism is specified which will drain the basin for maintenance or an emergency.
111. WET DETENTION BASIN OPERATION AND MAINTENANCE AGREEMENT
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) Xdoes 0 does not incorporate a vegetated filter at the outlet.
This system (check one) 0 does ))does not incorporate pretreatment other than a forebay.
Form SWU-102 Rev 3.99 Page 2 of 4

Maintenance activities shall be performed as follows:
After every significant runoff producing rainfall event and at least monthly:
a. Inspect the wet detention basin system for sediment accumulation, erosion, trash accumulation,
vegetated cover, and general condition.
b. Check and clear the orifice of any obstructions such that drawdown of the temporary pool occurs within
2 to 5 days as designed.
2. Repair eroded areas immediately, re -seed as necessary to maintain good vegetative cover, mow vegetative
cover to maintain a maximum height of six inches, and remove trash as needed.
3. Inspect and repair the collection system (i.e. catch basins, piping, swales, riprap, etc.) quarterly to maintain
proper functioning.
4. Remove accumulated sediment from the wet detention basin system semi-annually or when depth is
reduced to 75% of the original design depth (see diagram below). Removed sediment shall be disposed of
in an appropriate manner and shall be handled in a manner that will not adversely impact water quality (i.e.
stockpiling near a wet detention basin or stream, etc.).
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.
When the permanent pool depth reads 2.25 feet in the main pond, the sediment shall be removed.
When the permanent pool depth reads 2.25 feet in the forebay, the sediment shall be removed.
BASIN DIAGRAM
(Jill in the blanks)
0 Permanent Pool Elevation 96.50
Sediment Re oval El. 2594.25 75' "
-------------- -- Sediment Removal Elevation 94.75"/0
Bottom Etc ation 93.50 %-----------------------------------------125%
-------
Bottom Elevation 93.50
FOREBAY
MAIN POND
5. Remove cattails and other indigenous wetland plants when they cover 50% of the basin surface. These
plants shall be encouraged to grow along the vegetated shelf and forebay berm.
6. If the basin must be drained for an emergency or to perform maintenance, the flushing of sediment through
the emergency drain shall be minimized to the maximum extent practical.
Form SWU-102 Rev 3.99 Page 3 of

7. All components of the wet detention basin system shall be maintained in good working order.
I acknowledge and agree by my signature below that 1 am responsible for the performance of the seven
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.
Print name: St. Johns Church of Christ - Allen Roberson
Building Committee Chairman
Address: 2283 St. Johns Church Road, Washington, NC 27889
Date: I UI I X I GA
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.
a Notary Public for the State of
County of $e4u turf do hereby certify that Allen Roberson
A
personally appeared before me this A day of October , 2006 , and acknowledge the due
execution of the forgoing wet detention basin maintenance requirements. Witness my hand and official seal,
SEAL
My commission expiresbI
North Carolina
�. 'OFFICIAL SEAL
x Notary Public, North Carolina
',' County of Beaufort
+; Terris R. Thigpen
ion Expires 9/1212010
Form SWU-102 Rev 3.99 Page 4 of

'FY_.
�� �f
� �.

r,0.
FEB 01 601
Permit No
aA (to he provided by DWQ)
���'�State o£North Carolina
Department of Environment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
WET DETENTION BASIN SUPPLEMENT
This form may be photocopied for use as an original
DWQ Stormwater Management Plan Review:
A complete stonnwater management plan submittal includes an application form, a wet detention basin
supplement for each basin, design calculations, and plans and specifications showing all basin and outlet
structure details.
1. PROJECT INFORMATION (WEST BASIN)
Project Name: St. Johns Church of Christ
Contact Person: J. Stephen Janowski, PE Phone Number: f 252 756-1390
For projects with multiple basins, specify which basin this worksheet applies to:
elevations
Basin Bottom Elevation
94.00
ft.
(floor of the basin)
Permanent Pool Elevation
97.00
ft.
(elevation of the orifice)
Temporary Pool Elevation
97.81
ft.
(elevation of the discharge struchrre overflow)
areas
Permanent Pool Surface Area
5580
sq.
ft.
(water surface area at the orifice elevation)
Drainage Area
2.79
ac.
(on -site and ofj-site drainage to the basin)
Impervious Area
1.39
ac.
(on -site and off site drainage to the basin)
volumes
Pernanent Pool Volume
6073
cu.
ft.
(combined volume of main basin and forebav)
Temporary Pool Volume
5033
cu.
ft.
(volume detained above the permanent pool)
Forebay Volume
1360
cu.
ft.
(approximately 20Yo of total volume)
Other parameters
SA/DA I
4.20
(surface area to drainage area ratio from DWQ table)
Diameter of Orifice
1
in.
(2 to 5 day temporary pool draw -down required)
Design Rainfall
1
in.
Design TSS Removal 2
85
%
(mininmmn 85% required)
Form SWU-102 Rev 3.99 Page I of 4

Footnotes:
When using the Division SAIDA tables, the correct SAIDA ratio for permanent pool sizing should be computed based upon the
actual impervious % and permanent pool depth. Linear interpolation should be employed to determine the correct value for non-
standard table entries.
In the 20 coastal counties, the requirement for a vegetative filter may be waived if the wet detention basin is designed to provide
90% TSS removal. The NCDENR BNIP manual provides design tables for both 85% TSS removal and 90% TSS removal.
11. REQUIRED ITEMS CHECKLIST
The following checklist outlines design requirements per the Stormwater Best Management Practices Manual
(N.C. Department of Environment, Health and Natural Resources, February 1999) and Administrative Code
Section: 15 A NCAC 21-1 .1009.
Initial in the space provided to indicate the following design requirements have been met and supporting
documentation is attached. If the applicant has designated an agent in the Stormwater Management Permit
Application Form, the agent may initial below. If a requirement has not been met, attach justification.
E
a. The permanent pool depth is between 3 and 6 feet (required minimum of 3 feet).
b. The forebay volume is approximately equal to 20% of the basin volume.
c. The temporary pool controls runoff from the design storm event.
d. The temporary pool draws down in 2 to 5 days.
e. If required, a 30-foot vegetative filter is provided at the outlet (include non -erosive flow
calculations)
f. The basin length to width ratio is greater than 3:1.
g. The basin side slopes above the permanent pool are no steeper than 3:1.
h. A submerged and vegetated perimeter shelf with a slope of 6:1 or less (show detail).
i. Vegetative cover above the permanent pool elevation is specified.
j. A trash rack or similar device is provided for both the overflow and orifice.
k. A recorded drainage easement is provided for each basin including access to nearest right-
of-way.
I. If the basin is used for sediment and erosion control during construction, clean out of the
basin is specified prior to use as a wet detention basin.
in. A mechanism is specified which will drain the basin for maintenance or an emergency.
Ill. WET DETENTION BASIN OPERATION AND MAINTENANCE AGREEMENT
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) Xcloes 0 does not incorporate a vegetated filter at the outlet.
This system (check one) 0 does Poes not incorporate pretreatment other than a forebay.
Form SWU-102 Rev 3.99 Page 2 of

Maintenance activities shall be performed as follows:
After every significant runoff producing rainfall event and at least monthly:
a. Inspect the wet detention basin system for sediment accumulation, erosion, trash accumulation,
vegetated cover, and general condition.
b. Check and clear the orifice of any obstructions such that drawdown of the temporary pool occurs within
2 to 5 days as designed.
2. Repair eroded areas immediately, re -seed as necessary to maintain good vegetative cover, mow vegetative
cover to maintain a maximum height of six inches, and remove trash as needed.
3. Inspect and repair the collection system (i.e. catch basins, piping, swales, riprap, etc.) quarterly to maintain
proper functioning.
4. Remove accumulated sediment from the wet detention basin system semi-annually or when depth is
reduced to 75% of the original design depth (see diagram below). Removed sediment shall be disposed of
in an appropriate manner and shall be handled in a manner that will not adversely impact water quality (i.e.
stockpiling near a wet detention basin or stream, etc.).
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.
When the permanent pool depth reads 2_25
When the permanent pool depth reads 2.25
feet in the main pond, the sediment shall be removed.
feet in the forebay, the sediment shall be removed.
BASIN DIAGRAM
(Jill in the hlanks)
0 Permanent Pool Elevation 97.00
Sediment Ren oval El. 94.75 75 °
94.75
---------- ---- -- Sediment Removal Elevation 75%
Bottom Ele ation 94.00 %------------------------------- ---------- ----
Bottom Elevation 94.00 25%
FOREBAV MAIN POND
5. Remove cattails and other indigenous wetland plants when they cover 50% of the basin surface. These
plants shall be encouraged to grow along the vegetated shelf and forebay berni.
6. If the basin must be drained for an emergency or to perform maintenance, the flushing of sediment through
the emergency drain shall be minimized to the maximum extent practical.
Form SWU-102 Rev 3.99 Page 3 of

7. All components of the wet detention basin system shall be maintained in good working order.
I acknowledge and agree by my signature below that I am responsible for the performance of the seven
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.
Print name: St. Johns Church of Christ - Allen Roberson
Title: Building Committee Chairman
Address: 2283 St. Johns Church Road, Washington, NC 27889
252-975-2321
Date: IO/IR/D(o v
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, ' . a4— , a Notary Public for the State of North Carolina
County of P do he eby certify that Allen Roberson
personally appeared before me this le �L day of October 2006 , and acknowledge the due
execution of the forgoing wet detention basin maintenance requirements. Witness my hand and official seal,
IAL SEAL'am
bllc, NoRh Carolln0ty o1 Beaufort R. ThipponebnEt Ire It2 01
SEAL
My commission expires
Form SWU-102 Rev 3.99 Page 4 of