HomeMy WebLinkAboutSW8020906_HISTORICAL FILE_20110824STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
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COMPLIANCE EVALUATION INSPECTION
DOC DATE
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A
NICDENIR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue Coieen H. Sullins
Governor Director
August 24, 2011
Chairman, Board of Trustees
First Baptist Church of Shallotte
4486 Main Street
Shallotte, NC 28470
Subject: PERMIT RENEWAL REQUEST
Stormwater Permit No. SW8 020906
First Baptist Church of Shallotte
Brunswick County
Dear Board of Trustees:
Dee Freeman
Secretary
The Division of Water Quality issued a Coastal Stormwater Management Permit, Number SW8 020906 to First Baptist Church
of Shallotte for a High Density project on November 26, 2002. This permit expires on November 26, 2012. Per 15A NCAC
2H.1003(h) (the stormwater rules), applications for permit renewals shall be submitted 180 days prior to the expiration of a
permit and must be accompanied by a processing fee, which is currently set at $505.00. If this is still an active project please
complete and submit the enclosed renewal application prior to May 26, 2012, if this project has not been constructed and a
permit is no longer needed, please submit a request to have the permit rescinded. if you have sold the project please provide
the name, mailing address and phone number of the person or entity that is now responsible for this permit. Enclosed is a form
for change of ownership, which should be completed and submitted if the property has changed hands.
Your permit requires that upon completion of construction and prior to operation of the permitted stormwater treatment system,
a certification of completion be submitted to the Division from an appropriate designer for the type of system installed. This is to
certify that the permitted facility has been installed in accordance with the permit, the approved plans, specifications and
supporting documentation. If you have not already provided a Designer's Certification to our office, please include a copy with
your permit renewal request and processing fee. A copy of the certification form is enclosed for your convenience.
You should be aware that failure to provide the Designer's Certification and the operation of a stormwater treatment facility
without a valid permit, are violations of NC General Statute 143-215.1 and may result in appropriate enforcement action
including the assessment of civil penalties of up to $10,000 per day.
If you have any questions, please feel free to contact David Cox at (910) 796-7318.
Sincerely,
r
Georgette Scott
Stormwater Supervisor
GDSldwc S VVQSIStormwater\Perm its & Projects12002 \020906 HD12011 08 req_ren 020906
cc: Wilmington Regional Office File
encl.
Wilmington Regional Office
127 Cardinal Drive Extension, Wilmington, North Carolina 28405
Phone: 910-796-72151 FAX: 910-350-20041 Customer Service: 1.877-623.6748 One
Internet: www.ncwaterquailty.org
NorthC:u-olina
Amirallff
An Equal Opportunity 1 Affirmative Action Employer
State Stormwater Management Systems
Permit No. SW8 020906
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
First Baptist Church of Shallotte
First Baptist Church of Shallotte
Brunswick County
FOR THE
construction, operation and maintenance of a wet detention pond in compliance with the
provisions of 1 SA NCAC 2H .1000 (hereafter referred to as the "sto"nwater 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 November 26, 2012, 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 on page 3 of this permit, the Project Data Shect. The stormwater control has
been designed to handle the runoff from 158,039 square feet of impervious area.
The tract will be limited to the amount of built -upon area indicated on page 3 of this
permit, and per approved plans.
4. All stormwater collection and treatment systems must be located 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.
The ninoff from all built -upon area within the permitted drainage area of this project must
be directed into the permitted stormwater control system. A permit modification must be
submitted and approved prior to the construction of additional built -upon area from
outside of the approved drainage area.
2
State Stormwater Management Systems
Permit No. SW8 020906
DIVISION OF WATER QUALITY
PROJECT DESIGN DATA SHEET
Project Name. First Baptist Church of Shallotte
Permit Number: SW8 020906
Location: Brunswick County
Applicant: Mr. Fred Hester, Trustee
Mailing Address: First Baptist Church of Shallotte
4510 Main Street
Shallotte, NC 28470
Application Date: September 5, 2002
Receiving Stream/River Basin/index #: Lumber / UT Sharron Creek 1 15-25-2-9-(2)
Classification of Water Body: "SC HQW"
Pond Depth, feet: 5.5
Drainage Area, acres: 10.25
Offsite Area entering Pond, ft2:
Total Impervious Surfaces, ft2:
Permanent Pool Elevation, FMSL:
Pennitted Surface Area, ft2:
Permitted Storage Volume, ft3:
Temporary Storage Elevation, FMSL:
Controlling Orifice:
none accounted for, per engineer
158,039
27.5
21,444 @Permanent Pool
35,623
29.0
1.75"cp pipe
3
State Stormwater Management Systems
Permit No. SW8 020906
II. SCHEDULE OF COMPLIANCE
The stormwater management system shall be constructed in it's 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.
3. The pennittee shall at ail times provide the operation and maintenance necessary to assure
the permitted stormwater system functions at optimum efficiency. The approved
Operation and Maintenance Plan must be followed in its entirety and maintenance must
occur at the scheduled intervals including, but not limited to:
a. Semiannual scheduled inspections (every 6 months).
b. Sediment removal.
C. Mowing and revegetation of slopes and the vegetated filter.
d. Immediate repair of eroded areas.
e. Maintenance of all slopes in accordance with approved plans and specifications.
f. Debris removal and unclogging of outlet structure, orifice device, flow spreader,
catch basins and piping.
g. Access to the outlet structure must be available at all times.
4. Records of maintenance activities must be kept and made available upon request to
authorized personnel of DWQ. The records will indicate the date, activity, name of
person performing the work and what actions were taken.
Decorative spray fountains will not be allowed in the stormwater treatment system.
6. The facilities shall be constructed as shown on the approved plans. 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.
7. Upon completion of construction, prior to issuance of a Certificate of Occupancy, and
prior to operation of this permitted facility, a certification must be received from an
appropriate designer for the system installed certifying that the permitted facility has been
installed in accordance with this permit, the approved plans and specifications, and other
supporting documentation. Any deviations from the approved plans and specifications
must be noted on the Certification. A modification may be required for those deviations.
8. If the stormwater system was used as an Erosion Control device, it must be restored to
design condition prior to operation as a stormwater treatment device, and prior to
occupancy of the facility.
9. 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, or sale 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.
4
State Stormwater Management Systems
Permit No. SW8 020906
10. The permittec shall submit final site layout and grading plans for any permitted future
areas shown on the approved plans, prior to construction. If the proposed BUA exceeds
the amount permitted under this permit, a modification to the permit must be submitted
and approved prior to construction.
] 1. A copy of the approved plans and specifications shall be maintained on file by the
Permittee for a minimum of ten years from the date of the completion of construction.
12. Prior to the sale or lease of any portion of the property, the permittee shall notify DWQ
and provide the name, mailing address and phone number of the purchaser or leasee. An
access/maintenance casement to the stormwater facilities shall be granted in favor of the
penmittee if access to the stormwater facilities will be restricted by the sale or lease of any
portion of the property.
13. The permittee must maintain compliance with the proposed built -upon area and ensure
that the runoff from all the built -upon is directed into the permitted system.
14. 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 permitter 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.
15. The permittee must maintain the current permitted drainage area. No additional runoff
from outside of the permitted drainage area of 10.25 acres may enter the permitted
stormwater facilities without first applying for and receiving a permit modification.
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 transfer 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. The permittee is responsible for compliance with all permit conditions
until such time as the Division approves the transfer request.
2. Failure to abide by the conditions and limitations contained in this permit may subject the
Permittee to enforcement action by the Division of Water Quality, in accordance with
North Carolina General Statute 143-215.6A to 143-215.6C.
3. The issuance of this permit does not preclude the Permittee from complying with any and
all statutes, rules, regulations, or ordinances which may be imposed by other government
agencies (local, state, and federal) 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 permittee grants DENR Staff permission to enter the property during normal business
hours for the purpose of inspecting all components of the permitted stormwater
management facility.
6. The permit may be modified, revoked and reissued or terminated for cause. The filing of
a request for a permit modification, revocation and reissuance or termination does not
stay any permit condition.
State Stormwater Management Systems
Permit No. SW8 020906
7. Unless specified elsewhere, permanent seeding requirements for the stormwater control
must follow the guidelines established in the North Carolina Erosion and Sediment
Control Planning and Design Manual.
8. Approved plans and specifications for this project are incorporated by reference and are
enforceable parts of the permit.
9. The permittee shall notify the Division any name, ownership or mailing address changes
within 30 days.
Permit issued this the 26th day of November, 2002.
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
�v Alan W.- Klimek, P.E., Director
Division of Water Quality
By Authority of the Environmental Management Commission
M
TRIPP ENGINEERING, P.C.
419 Chestnut Street
Wilmington, North Carolina 28401
Phone: (910) 763-5100 • FAX: (910) 763-5631
September 5, 2002
NCDENR
Division water Quality
127 Cardinal Drive
Wilmington, NC 28405-3845
Attn: Ms. Linda Lewis
Re: First Baptist Church of Shallotte
Brunswick County, NC
TE 00042
Dear Linda:
SEP Zao2
Enclosed please find two (2) sets of plans, one (1) signed original and one (1)
copy of the application form with narrative, one (1) wet detention basin supplement, two
(2) sets of calculations and one check for the application fee.
Please review for approval and contact us with any questions or comments.
Thank you.
Sincerely,
Tripp Engineering, P.C.
Jenny Alexander
JEAAcb
Enc.
September 5, 2002
Stormwater Narrative
First Baptist Church of Shallotte
Shallotte, NC
TE 00042
The First Baptist Church of Shallotte is a vacant 10.25 acre tract. A church facility with
32,600 sf of building, 124,359 sf of parking and 1,080 sf of concrete sidewalks is
proposed. The total site impervious is 35.41 %.
Stormwater will be treated by wet detention. The pond is designed to exceed the State's
1" requirement. Outflow will be routed to an unknown tributary of Sharon Creek,
classification SC-HQW.
8/28/2002
CDC
First Baptist Church of Shallotte
Stormwater Calculations
00042
Total Drainage Area
sq. ft,
acres
446,490
10.25
Impervious Area
Land Use
sq. ft.
acres
buildings
32,600
0.75
arkin las halt
124,359
2.85
sidewalks
1.080
0.02
Total
158,039
3.63
Stormwater Calculations:
Time of Concentration:
Hydraulic Length (L) = 2.100 ft.
change in Height (H) = 5 ft.
Tc = (L' IH)J" 1 128
28.90 min.
Flow for 2 year, 6 hour Storm (Qz):
QPRe = (CPRE) x (110) x (Area)
12.97 cfs
QPosT = (CposT) x (I10) x (Area)
25,93 cfs
Soil Storage Capacity for 2 year Storm:
CN = (98)(% imp.) + (60)(1-% imp.)
= 74
P = 3.30 in. for2yr, 6 hr storm
S = 10001CN - 10
= 3.51
Depth (D)= (P-(0.2)(S)f 1 (P+(0.8)(S)]
1.10 in.
Time to Peak Flow:
TP = [(43,5) (D) (Area)) I Q2,Pcs-r
18.98 min,
Detention Pond Design:
Pond Size:
Elevation
ft,
Surface Area
s , ft.
Normal Pool
27.50
21,444
Flood Pool
29.00
26,053
Top of Bank
31.00
32,791
Bottom of Pool
22.00
3,836
Provided Storage Volume:
Vol. _ [(Normal pool SA + Flood Pool SA) 121
x (F.P. elev. - N.P. elev.)
35,623 cu.ft.
Yt]E�EIVEY3
SEP 0 5 2002
PROD # �,v8 Z o1OGa
% impervious = 0.354
= 35.4%
say 36.0%
CPRE = 0.25
C+PosT= (% imp.)(.95)+(1-% imp.)(.25)
0.50
12 = 5.06 inlhr
110 = 6.30 inlhr
Flow for 10 year, 6 hour Storm (0i0):
()PRE _ (CPRE) X (125) x (Area)
= 16.14 cfs
QPosT = (CPosT) x (125) x (Area)
= 32.29 cfs
aou arara e Lapacity ror I u year jrorm:
CN = (98)(% imp.) + (60)(1-% imp.)
74
P = 4.82 in. for 10 yr, 6 hr storm
S = 10001CN - 10
3,51
Depth (D)= [P-(0.2)(S)j21 [P+(0.8)(S)]
2.22 in.
Time to Peak Flow:
TP = [(43.5) (D) (Area)] ! 010,P05T
30.68 min.
5•S
State Surface Area Requirement at normalpool:
Pond side slopes = :1
Depth below N.P. = 6.5 ft.
SAIDA m 0.
(Chart for 90% TSS Removal for Wet Detention
Pond without Ve etative Filter
Required SA = (SAIDA) x (Total Drainage Area)
= 10,091 s . ft.
State Volume Required for Storage of first 1" of runoff:
Rv = .05+ .009(% imp)
0.368563
V= (design rainfall)(Rv)(Drainage Area)
13,713 cu. ft.
SEAL
17374
1AD
'% � •'�'�G1NE�Q�Q .
00042pondN 1 of 3 `�i - -5 - 0z'
8/28/2002
CDC
First Baptist Church of Shallotte
Stormwater Calculations
00042
Pond Volume:
Bottom SA = 3,836 sq. ft.
Normal Pool SA = 21,444 sq. ft.
Vol. _ [(N.P. SA+ Bottom SA)! 2] x (N.P, el. - Bottom el.)
= 69,520 cu. ft.
Forebav;
Required Volume
Vol. = 20% of storage volume
= 13,904 cu. ft.
Outlet Structure Design:
Flow for 2-day drawdown:
for 1st 1" of stormwater,
Q = Required Vol. / 172,800 sec. (2-days)
0.079 cfs
Required Area of Pipe for 2-day drawdown:
A= Q! [Cd x SQRT(2 x g x h)]
Cd = 0.6
9 = 32.2 ft.ls2
In = (F,P. elev.- N.P, elev.) 12
= 0.75 ft.
A = 0.01911 sq. ft.
Diameter of Pipe for 2-dav drawdown;
DIA. = SQRT[(A x 4) / pi]
0.1557 ft.
1.87 in.
'Use: 1.75 in diameter pipe
Outlet Structure Check:
Using a 4' x 4' Basin,
Perimeter L = 16 ft.
Q = CIA
C = (°r6 imp.)(.95) + (1-% imp)(25)
0,50
1 = 6.30 in. for a 25 yr. Storm
A = 10.25 Acres
= 32.29 cfs
Q= CwxLxH"S
H = [Q 1 (Cw x L)]2m
Cw = 3
0.77 ft,
Peak elevation = flood pool elevation + H
29.77 ft.
Provided Volume
Bottom SA = 2,512 sq, ft,
Normal Pool SA = 6,720 sq. ft.
Vol. _ [(N.P. SA+ Bottom SA) 121 x (N,P. el. - Bottc
13,848 cu. ft.
Flow for 5-day drawdown:
for 1st 1" of stormwater,
Q = Required Vol./ 432,000 sec. (5-days)
— 0.032 cfs
Required Area of Pipe for 5-day drawdown:
A= Q! [Cd x SQRT(2 x g x h)]
Cd = 0.6
9 = 32.2 ft.ls2
h = (F.P. elev. - N.P. elev.) 1 2
0.75 ft.
A = 0,0076 sq. ft.
Diameter of Pipe for 5-day drawdown:
DIA. = SQRT[(A x 4) 1 pi]
= 0.0985 ft.
1.18 in.
00042pondN
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