SW8911001_Current Permit_20120629

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NCDETIR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue Charles Wakild, P. E. Dee Freeman
Governor Director Secretary
June 29, 2012
Jim Crews, Elder— Property Committee Chair
Calabash Presbyterian Church
8820 Old Georgetown Road SW
Sunset Beach, NC 28468
Subject: Approved Plan Revision
Calabash Presbyterian Church
Stormwater Project No. SW8 911001
Brunswick County
Dear Mr. Crews:
On June 4, 2012, the Wilmington Regional Office received a plan revision for
Stormwater Management Permit Number SW8 911001. The revisions include an
addition to the church building, additional sidewalk, and an asphalt drive. The permit is
approved for 141,570 square feet of impervious surface. The current additions along the
original impervious surfaces total 85,385 square feet of impervious surface leaving a
56,185 square feet remaining for future use. It has been determined that a formal
permit modification is not required for the proposed changes. We are forwarding you an
approved copy of the revised plans for your files. Please replace the old approved plan
sheet with the new one.
Please be aware that all terms and conditions of the permit issued on September 28,
2012, remain in full force and effect. Please also understand that the approval of this
revision to the approved plans for the subject State Stormwater Permit is done on a
case-by-case basis. Any other changes to this project must be submitted to and
approved through the Division of Water Quality prior to construction. The issuance of
this plan revision does not preclude the permittee from complying with all other
applicable statutes, rules, regulations or ordinances which may have jurisdiction over
the proposed activity, and obtaining a permit or approval prior to construction.
If you have any questions concerning this matter, please do not hesitate to call me at'
[phone].
Sincerely,
Chris Baker
Environmental Engineer II
GDS/csb: SAWQSIStormwateAPermits&Projects120121911 OO1 HD12O12 06 permit 911001
cc: Phil Norris, P.. E., Norris and Tunstall Consulting Engineers, P. C.
Brunswick County Building Inspections
Wilmington Regional Office
Wilmington Regional Office
127 Cardinal Drive Extension,Wilmington,North Carolina 28405 One
Phone:[phone] FAX:[phone] Customer Service:1-877-623-6748 No Carolina
Internet:l4ww.ncwaterraualityr.org �+ ���N����
An Equal Opportunity 1 Affirmative Action Employer

DWQ USE ONLY
r� Date Received Fee Paid(express only) Permit Number
State of North Carolina Alr /zo q3
Department of Environment and Natural Resources
Division of Water Quality
STOR]MWATER MANAGEMENT PERMIT PLAN REVISION APPLICATION FORM
This form may be photocopied for use as an original
I. GENERAL INFORMATION
1. Stormwater Management Permit Number: SW8 911001 IE C E I V E-
2. Project Name:Calabash Presbyterian Church
3. Permit Holder's name(specify the name of the corporation,individual,etc.): BY;
Calabash Presbyterian Church
4. Print Owner/Signing Official's name and title(person legally responsible for permit):
Jim Crews,Elder-Property Committee Chair
5. Mailing Address for person listed in item 2 above:
8820 Old Georgetown Road SW
City:Sunset Beach State:NC Zip:28468
Phone: (910 ) 579-7356 Fax: (910 ) 579-9886
Email:[e-mail]
II. PLAN REVISION INFORMATION
1. Summarize the plan revision proposed(attach additional pages if needed):
The plan reflects as-built conditions as of May,2012,including the new sanctuary,perking,and miscellaneous
impervious surface
III. 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 DWQ Office that issued the permit.
1. Please indicate that you have provided the following required information by initialing in the space provided
next to each item.
• Original&1 copy of the Plan Revision Application Form
• Two(2)copies of revised plans(must be revisions of original approved plan sheet(s))
If applying for Express review(only available in 20 coastal counties):
• Application fee of$500.00(made payable to NCDENR)
VI. APPLICANT'S CERTIFICATION
I,(print or type name of person listed in General Information,item 3)Jim Crews, Elder
certify that I have authorized these pl isions and that the information included on this plan revision
application is est of my le e,correct and complete.
p
Signature Date: '®` !Z
Plan-Revision Form Rev DJuly2010 Page I of 1

Permit No. �
(to be provided by DWQ)
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPI,ICATIOldT FORM
WET DETENTION BASIN SUPPLEMENT
This form may be photocopied for use as an original
DWO Stormwater Management Plan Review:
A complete stormwater management plan submittal includes a wet detention basin supplement for each basin,
design calculations, plans and specifications showing all basin and outlet structure details, and a signed and
notarized operation and maintenance agreement.
I. PROJECT INFORMATION (please complete the following information):
Project Name: Calabash Presbyterian Church
Contact Person: Bob Correll Phone Number: (910) 579-9820
For projects with multiple basins, specify which basin this worksheet applies N/A
to:
Basin Bottom Elevation 41.0 ft. (average elevation of the floor of the basin)
Permanent Pool Elevation 47.0 ft. (elevation of the orifice)
Temporary Pool Elevation 48.5 ft. (Elevation of the discharge structure overflow)
Permanent Pool Surface Area 8,035 sq. ft. (water surface area at the orifice elevation)
Drainage Area 5.0 ac. (on-site and off-site drainage to the basin)
Impervious Area 3.25 ac. (on-site and off-site drainage to the basin)
Permanent Pool Volume 20,737 cu. ft. (combined volume of main basin and forebay)
Temporary Pool Volume 15,110 cu. ft. (volume detained above the permanent pool)
Forebay Volume 7,215 cu. ft.
SA/DA1 used 0.0365 (surface area to drainage area ratio)
Diameter of Orifice 1.5 in.
Design TSS Removal 90 % (85% TSS removal required, see item k below)
II. REQUIRED ITEMS CBECKLIST
The following checklist outlines design requirements per the Stormwater Best Management Practices manual
(N.C. Department of Environment, I:ealth and Natural Resources, November 1995) 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 Form, the agent may initial below. If a requirement has not been met, attach justification.
Form SWU-102 Rev 1/August 1998 Pagel of 3

Applicants nitials
a. The temporary pool controls runoff from the 1 inch storm event.
b. The basin length to width ratio is greater than 3:1.
c. The basin side slopes above the permanent pool are no steeper than 3:1.
d. A submerged and vegetated perimeter shelf at less than 6:1 is provided (show detail).
e. Vegetation above the permanent pool elevation is specified.
f. An emergency drain is provided to empty the basin.
g. The permanent pool depth is between 3 and 6 feet (required minimum of 3 feet).
h. The temporary pool draws down in 2 to 5 days.
i. A trash rack is provided for both the overflow and orifice.
j. The forebay volume is approximately equal to 20% of the total basin volume.
k. Sediment storage is provided in the permanent pool.
N/A 1. A 30-foot vegetative filter is provided at the outlet2 (include erosive flow calculations).
m. Recorded drainage easement for each basin including access to nearest right-of-way.
n. A site specific operation and maintenance (O&M) plan is provided.
o. A vegetation management/mowing schedule is provided in the O&M plan.
p. Semi-annual inspections are specified in the O&M plan.
q. A debris check to be performed after every storm event is specified in the O&M plan.
r. Specific clean-out benchmarks are specified in the O&M plan (elevation or depth).
s. A legally responsible party is designated in the O&M plan3 (include name and title).
NIA t. If the basin is used for sediment and erosion control during construction, clean out of the.
basin is specified to be performed prior to use as a wet detention basin.
Footnotes:
lWhen using the Division SA/DA table, 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.
2The requirement for a vegetative filter may be waived if the wet detention basin is designed to meet 90% TSS removal.
3The 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.
III. WET DETENTION BASIN OPERATION AND MAINTENANCE AGREEMENT
The wet detention basin system is defined as the wet detention basin, forebay, non-integrated pretreatment
systems (pretreatment other than forebays), and the vegetated filter if one is provided.
This system (check one) ❑ does ® does not incorporate a vegetated filter.
This system (check one) ❑ does ® does not incorporate non-integrated pretreatment.
Maintenance activities shall be performed as follows:
1. After every significant runoff producing rainfall event and at least monthly:
Form SWU-102 Rev 1/August 1998 Page 2 of 3

Y
M ` r
a. Inspect the wet detention basin system for sediment accumulation, erosion, trash accumulation, grass
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.
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. Removed sediment shall be disposed of in an appropriate
manner and shall not be handled in a manner that will adversely impact water quality (i.e. stockpiling
near a wet detention basin or stream, etc.).
The original design depth is: 6.0 ft
The sediment removal benchmark depth is: 4.5 ft
5. Remove cattails and other indigenous wetland plants when they cover 75% of the basin surface. These
plants shall be encouraged to grow along the basin perimeter.
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.
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 above
maintenance procedures. I agree to notify DWQ of any problems with the system or changes in the name of
the project, responsible party, or address.
Print name: Bob Correll c/o Calabash Presbyterian Church
Address: 8820 Old Georgetown Road, Sunset Beach, NC 28468
Phone: [phone]
Title: Chairman, CLU5AQKJffaY, Committee
Signature:
Date:
I, J e r i a M. Coleman , a Notary Public for the State of North Carolina
County of New Hanover , do hereby certify that B o b C o r r e l l
personally appeared before me this 2 8 t h day of September , 1998 , and acknowledge the
due execution of the forgoing infiltration system maintenance requirem 141INSS my hand and official
seal, f�r
,01A RY.
fit SEAL
My comngssion expires 7 ��80 a, $� �tl6 Li C a�
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Form SWU-102 Rev 1/August 1998 Page 3 of 3

State Stormwater Management Systems
Permit No SW8
TO: NC DENR/Division of Environmental Management :
Water Quality Section
127 Cardinal Drive Extension. DEC 0 6 1999
Wilmington,NC 28405-3845
RE: Calabash Presbyterian Church
Permit No. SW8 911001
Dated: February 24, 1999
Brunswick County
A&K Project No. 98077
Engineer's Certification
I, J. Phillip Norris, P. E. , as a duly registered Professional Engineer in the State of
North Carolina, having been authorized to observe(periodically,weep tim)the construction of the project,
Calabash Presbyterian Church (Project)
for Calabash Presbyterian Church (Project Owner) hereby state that, to the best of my abilities, due
care and diligence were 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.
Required Items to be checked for this certification to be considered complete are on page 2 of this form.
Noted deviations from approved plans and specifications:
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Signature ,� � CAWj, %,
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Registrati No. 11966 = S E q L
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11966 s
Date December 3, 1999 %+"o
cc: Mr. Miller/Calabash P� terian Church
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Brunswick County Building Inspector
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CONSULTING ENGINEERS, INC.
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PE Certification Requirements:
The drainage area to the system contains approximately the permitted acreage.
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.
The outlet/bypass structure elevations are per the approved plan.
i3'� The outlet structure is located per the approved plans.
Ta! Trash rack is provided on the outlet/bypass structure.
/1 All slopes are grassed with permanent vegetation.
�8. Vegetated slopes are no steeper than 3:1.
The inlets are located per the approved plans and do not cause short-circuiting of the
system.
10. The permitted amounts of surface area and/or volume have been provided.
�11_ Required drawdown devices are correctly sized per the approved plans.
12. All required design depths are provided.
r All required parts of the system are provided, such as vegetated shelf, and a
forebay.
14. The overall dimensions of the system, as shown on the approved plans, are provided.
S:\WQS\STORMWAT\FORMS\PECERT.FOR
cc: Building Inspector
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