SW8050518_Historical File_20090820

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NCCOEM
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue Coleen H. Sullins
Governor Director
August 20, 2009
Mr. J. Michael Moore, Town Manager
Town of Surf City
214 N. New River Drive
Surf City, NC 28445
Subject: Stormwater Permit No. SW8 050518 Modification
Surf City Community Park and Recreation Center
High Density Project
Pender County
Dear Mr. Moore:
Dee Freeman
Secretary
The Wilmington Regional Office received a complete Stormwater Management Permit
Application for Surf City Community Park and Recreation Center on August 13, 2009.
Staff review of the plans and specifications has determined that the project, as
proposed, will comply with the Stormwater Regulations set forth in SL2008-211 and
Title 15A NCAC 2H.1000, effective September 1, 1995. We are forwarding Permit No.
SW8 050518 dated August 20, 2009, for the construction of the subject project.
This permit shall be effective from the date of issuance until September 13, 2015, 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 150B of the North Carolina General Statutes, and filed
with the Office of Administrative Hearings, P.O. Drawer 27447, Raleigh, NC 27611-
7447. Unless such demands are made this permit shall be final and binding.
If you have any questions, or need additional information concerning this matter, please
contact Kelly Johnson, or me at [phone].
Sincerely,
Georgett� Scott
Stormwater Supervisor
Division of Water Quality
GDS!kpj: S:M/QSISTORMWATER,PERMIT;050518MOD.aug0u9
cc: Ted Burke, PE, Cavenaugh and Associates
Pender County Planning Department
Wilmington Regional Office Stormwater File
Central Files
Wilmington Regional Office
127 Cardinal Drive Extension, Wilmington, North Carolina 28405
Phone: [phone] FAX: [phone] Customer Service:1.877-623-6748 NonrthCarolina
Internet: >:vww.ncwaterquality.org �!�ltllt'R'�t�J
An Equal Opportunity 1 Affirmative Action Employer

State Stormwater Management Systems
Permit No. SW8 050518
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
J. Michael Moore and the Town of Sun` City
Surf City Community Park and Recreation Center
201 Community Center Drive, Surf City, Pender County
FOR THE
construction, operation and maintenance of a wet detention pond in compliance with
the provisions of SL2008-211 and 15A NCAC 2H .1000, effective September 1, 1995
(hereafter collectively and separately 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 September 13, 2015, 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 1.6 on page 3 of this permit. The stormwater
control has been designed to handle the runoff from 135,163 square feet of
impervious area in a drainage area of 486,266 square feet (the "High Density
Tract"). The remaining project area of 477,468 square feet (the "Low Density
Tract"1 must be maintained at 12% built -upon area or less, as required by
Section .1005 of the stormwater rules. The overall built -upon area for both tracts
combined must be maintained at 25% or less.
3. The High Density Tract will be limited t^ the amount of built -upon area indicated
on page 3 of this permit, and per approved plans. There is no allotment for future
built -upon area.
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.
Page 2 of 8

State Stormwater Management Systems
Permit No. SW8 050518
5. The
runoff from all built -upon area within the permitted
High Density Tract of this
project must be directed into the permitted stormwater control system.
6. The following design criteria have been provided in the wet detention pond and
must be maintained at design conditions:
a.
Drainage Area, acres:
11.16
Onsite, ft2:
486,266
Offsite, ft2:
0
b.
Total Impervious Surfaces, ft2:
135,163
Onsite, ft2:
135,163
Subject to the 1995 Rule (ft2)* 94,090
Subject to the 2008 Rule (ft2)** 41,073
Offsite, ft2:
0
C.
Design Storm, inches:
Impervious subject to the 1995 Rule (in)*
1.5
Impervious subject to the 2008 Rule (in)**
3.75
d.
Average Pond Design Depth, feet:
3.0
e.
TSS removal efficiency:
90%
f.
Permanent Pool Elevation, FMSL:
26.00
g.
Permanent Pool Surface Area, ft2:
120,629
h.
Permitted Storage Volume, ft':
45,613
i.
Temporary Storage Elevation, FMSL:
26.37
j.
Pre-dev. 1 yr-24 hr. discharge rate, cfs:
0.85
k.
Weir Length (ft):
0.35
I.
Weir Driving Head, Max/Average (ft):
0.37/0.25
M.
Weir flowrate, cfs:
0.24
n.
Permitted Forebay Volume, ft3:
N/A
o.
Fountain Horsepower:
1
P.
Receiving Stream/River Basin:
Intracoastal Waterway / Cape Fear
q.
Stream Index Number:
18-87-(5.5)
r.
Classification of Water Body:
"SA; HQW"
* 15A NCAC 2H .1000, effective September 1, 1995, design storm 1.5"
** Additional built upon area added by this modification is subject to SL2008-21 1, effective October 1,
2008, design storm is pre -post difference for the 1 year 24 hour storm.
7. Approved plans and specifications for projects covered by this permit are
incorporated by reference and are enforceable parts of the permit.
8. The only runoff conveyance systems allowed within the Low Density Tract will be
vegetated conveyances such as swales with minimum side slopes of 3:1 (H:V)
as defined in the stormwater rules and approved by the Division.
9. No piping is allowed in the Low Density Tract except that minimum amount
necessary to direct runoff beneath an impervious surface such as a road or to
provide access.
10. Unless specified elsewhere, permanent seeding requirements for the swales
must follow the guidelines established in the North Carolina Erosion and
Sediment Control Planning and Design Manual.
11. Within the Low Density Tract, a 50' buffer shall be provided adjacent all
impounded structures, rivers, streams and tidal waters. The buffer is not required
within the High Density Tract.
12. Roof drains in the Low Density Tract must terminate at least 50' from the Mean
High Water line. Roof drains in the High Density Tract must be directed or
connected to the stormwater management system.
Page 3 of 8

State Stormwater Management Systems
Permit No. SW8 050518
II. SCHEDULE OF COMPLIANCE
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.
3. The permittee shall at all times provide the operation and maintenance
necessary to assure the permitted stormwater system functions at optimum
efficiency. The approved Operation and Maintenance Plan must be followed in
its entirety and maintenance must occur at the scheduled intervals including, but
not limited to:
a. Semiannual scheduled inspections (every 6 months).
b. Sediment removal.
C. Mowing and revegetation of slopes and the vegetated filter.
d. Immediate repair of eroded areas.
e. Maintenance of all slopes in accordance with approved plans and
specifications.
f. Debris removal and unclogging of outlet structure, orifice device, flow
spreader, catch basins and piping.
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.
5. Decorative spray fountains will be allowed in the stormwater treatment system,
subject to the following criteria:
a. The fountain must draw its water from less than 2' below the permanent
pool surface.
a. Separated units, where the nozzle, pump and intake are connected by
tubing, may be used only if they draw water from the surface in the
deepest part of the pond.
b. The falling water from the fountain must be centered in the pond, away
from the shoreline.
C. The maximum horsepower for a fountain in this pond is 3/4 horsepower.
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.
Page 4 of 8

State Stormwater Management Systems
Permit No. SW8 050518
9. Access to the stormwater facilities shall be maintained via appropriate
easements at all times.
10. The permittee shall submit to the Director and shall have received approval for
revised plans, specifications, and calculations prior to construction, for any
modification to the approved plans, including, but not limited to, those listed
below:
a. Any revision to any item shown on the approved plans, including the
stormwater management measures, built -upon area, details, etc.
b. Project name change.
C. Transfer of ownersFiip.
d. Redesign or addition to the approved amount of built -upon area or to the
drainage area.
e. Further subdivision, acquisition, lease or sale of all or part of the project
area. The project area is defined as all property owned by the permittee,
for which Sedimentation and Erosion Control Plan approval or a CAMA
Major permit was sought.
f. Filling in, altering, or piping of any vegetative conveyance shown on the
approved plan.
11. The permittee shall submit final site layout and grading plans for any permitted
future areas shown on the approved plans, prior to construction.
12. A copy of the approved plans and specifications shall be maintained on file by
the Permittee for a minimum of ten years from the date of the completion of
construction.
13. The Director may notify the permittee when the permitted site does not meet one
or more of the minimum requirements of the permit. Within the time frame
specified in the notice, the permittee shall submit a written time schedule to the
Director for modifying the site to meet minimum requirements. The permittee
shall provide copies of revised plans and certification in writing to the Director
that the changes have been made.
14. Swales and other vegetated conveyances shall be constructed in their entirety,
vegetated, and be operational for their intended use prior to the construction of
any built -upon surface.
15. The permittee shall at all times provide the operation and maintenance
necessary in the Low Density Tract to operate the permitted stormwater
management systems at optimum efficiency to include:
a. Inspections
b Sediment removal.
C. Mowing, and revegetating of the side slopes.
d. Immediate repair of eroded areas.
e. Maintenance of side slopes in accordance with approved plans and
specifications.
16. The permittee shall submit all information requested by the Director or his
representative within the time frame specified in the written information request.
Page 5 of 8

State Stormwater Management Systems
Permit No. SW8 050518
III. GENERAL CONDITIONS
1. This permit is not transferable except after notice to and approval by the Director.
In the event of a change of ownership, or a mailing address change, or a name
change of the permittee or project, the permittee must submit a completed and
signed name/ownership change form to the Division of Water Quali,
accompanied by the required documentation as listed on the form. he approval
of this request will be considered on its merits and may or may not be approved.
The permittee is responsible for compliance with all permit conditions until such
time as the Division approves the transfer request.
2. Failure to abide by the conditions and limitations contained in this permit may
subject the Permittee to enforcement action by the Division of Water Quality, in
accordance with North Carolina General Statute 143-215.6A to 143-215.6C.
3. The issuance of this permit does not preclude the Permittee from complying with
any and all statutes, rules, regulations, or ordinances, which may be imposed by
other government agencies (local, state, and federal) having jurisdiction.
4. In the event that the facilities fail to perform satisfactorily, including the creation
of nuisance conditions, the Permittee shall take immediate corrective action,
including those as may be required by this Division, such as the construction of
additional or replacement stormwater management systems.
5. The permittee grants DENR Staff permission to enter the property during normal
business hours for the purpose of inspecting all components of the permitted
stormwater management facility.
6. The permit may be modified, revoked and reissued or terminated for cause. The
filing of a request for a permit modification, revocation and reissuance or
termination does not stay any permit condition.
7. Unless specified elsewhere, permanent seeding requirements for the stormwater
control must follow the guidelines established in the North Carolina Erosion and
Sediment Control Planning and Design Manual.
8. Approved plans and specifications for this project are incorporated by reference
and are enforceable parts of the permit.
9. The permittee shall notify the Division in writing of any name, ownership or
mailing address changes at least 30 days prior to making such changes.
10. The permittee shall submit a permit renewal application at least 180 days prior to
the expiration date of this permit. The renewal request must include the
appropriate documentation and the processing fee.
Permit issued this the 20th day of August 2009.
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
Division of Water Qualityv
By Authority of the Environmental Management Commission
Page 6 of 8

State Stormwater Management Systems
Permit No. SW8 050518
Surf City Community Park and Recreation Center
Stormwater Permit No. SW8 050518
Pender Countv
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 7of8

DWQ USE ONLY
Date Received
Fee Paid
Permit Number
7 i
1s0 S- °0 --Ay-3r /
.S Gv80SOS/ e ov 'a
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION F&JW
This form may be photocopied for use as an original
I. GENERAL INFORMATION 8 . JUN 1 2009
1. Applicants name (specify the name of the corporation, individual, etc. who owns the project):
Town of Surf City
2. Print Owner/Signing Official's name and title (person legally responsible for facility and compliance):
T. Michael Moore, Town Manager
3. Mailing Address for person listed in item 2 above:
P.O. Box 2475
City:Surf City State:NC Zip:28445
Phone: (910 ) 328-4131 Fax: [phone]
Email:[e-mail]
4. Project Name (subdivision, facility, or establishment name - should be consistent with project name on plans,
specifications, letters, operation and maintenance agreements, etc.):
Surf City Community Park
5. Location of Project (street address):
Surf City Community Center, 201 Community Center Drive
City:Surf City County:Pender Zip:28445
6. Directions to project (from nearest major intersection):
From intersection of Hwvs 50 and 210, head towards the beach, turn right onto T.H. Batts Road Take another
right onto Community Center Drive
7. Latitude:34° 26' 26" N Longitude:77° 33' 55" W of project
8. Contact person who can answer questions about the project:
Name:Ted Burke Telephone Number: (910 1 392-4462
Email:tburke®cavanaughsolutions.com
II. PERMIT INFORMATION:
1. Specify whether project is (check one): ❑New ❑Renewal ❑Modification
Form SWU-101 Version 09.25.08 Page 1 of 4

2. If this application is being submitted as the result of a renewal or modification to an existing permit, list the
existing permit numberSW8 050518 and its issue date (if known)September 13, 2005
3. Specify the type of project (check one):
❑Low Density ❑High Density ®Redevelop ❑General Permit ❑Universal SMP ❑Other
4. Additional Project Requirements (check applicable blanks; information on required state permits can be
obtained by contacting the Customer Service Center at 1-877-623-6748):
❑CAMA Major ®Sedimentation/Erosion Control ❑404/401 Permit ❑NPDES Industrial
Stormwater
III. PROJECT INFORMATION
1. In the space provided below, summarize how stormwater will be treated. Also attach a detailed narrative
(one to two pages) describing stormwater management for the project.
There is a high density and low density area of the project. Stormwater in the high density portion will travel
by way of overland flow to the existing stormwater pond on the site. Stormwater in the low density portion of
the site will sheeflow to a level spreader with a vegetated filter strip prior to discharge.
2. Stormwater runoff from this project drains to the Cape Fear River basin.
3. Total Property Area: 22.12 acres 4. Total Coastal Wetlands Area: 0 acres
5. Total Property Area (3) - Total Coastal Wetlands Area (4) = Total Project Area**:22.12 acres
6. (Total Impervious Area / Total Project Area) X 100 = Project Built Upon Area (BUA):17.05 %
7. How many drainage areas does the project have72
8. Complete the following information for each drainage area. If there are more than two drainage areas in the
project, attach an additional sheet with the information for each area provided in the same format as below.
For high density projects, co m lete the table with one drainage area for each engineered stormwater device.
Basin Information
Drainage Area 1 -, .
Drainage Area 2
Receiving Stream Name
Intracoastal Waterway
Intracoastal Waterway
Stream Class & Index No.
SA;HQW & 18-87-(5.5)
SA;HQW & 18-87-(5.5)
Total Drainage Area (sf)
486,266
477,468
On -site Drainage Area (sf)
486,266
477,468
Off -site Drainage Area (sf)
0
0
Existing Impervious* Areas
95,929
0
Proposed Im ervious*Areas
39,234
29,143
% Impervious* Area total
27.8%
6.1%
Impervious* Surface Area
Drainage Area 1
Drainage Area 2
On -site Buildings (sf)
19,128
0
On -site Streets (sf)
35,620
0
On -site Parking (sf)
56,744
17,811
On -site Sidewalks (sf)
9,529
11,332
Other on -site (sf)
14,142
0
Off -site (sf)
0
0
Total (sf):
135,163
29,143
* Impervious area is defined as the built upon area including, but not limited to, buildings, roads, parking areas,
sidewalks, gravel areas, etc.
Form SW-101 Version 09.25.08 Page 2 of 4
rotal Pro!.
Same
Same
963,734
963,734
0
95,929
68,377
17.05%
Total Pro!.
19,128
35,620
74,555
20,861
14,142
0
164,306

"Total project area shall be calculated to exclude Coastal Wetlands from use when calculating the built upon area
percentage calculation. This is the area used to calculate overall percent project built upon area (BUA).
9. How was the off -site impervious area listed above derived?CAD generated, Excel tabulated
°rojects in Union County: Contact the DP✓Qi Central Office staff to check to see ifyou project is located
within a Threatened & Endangered Species watershed that may be subject to more stringent stormwater
requirements.
IV. DEED RESTRICTIONS AND PROTECTIVE COVENANTS
One of the following property restrictions and protective covenants are required to be recorded for all
subdivisions, outparcels and future development prior to the sale of any lot. If lot sizes vary significantly, a table
listing each lot number, size and the allowable built -upon area for each lot must be provided as an attachment.
Forms can be downloaded from http://h2o.enr.state.nc.us/su/bmp forms.htm - deed restrictions.
Form DRPC-1
High Density Commercial Subdivisions
Form DRPC-2
High Density Developments with Outparcels
Form DRPC-3
High Density Residential Subdivisions
Form DRPC-4
Low Density Commercial Subdivisions
Form DRPC-5
Low Density Residential Subdivisions
Form DRPC-6
Low Density Residential Subdivisions with Curb Outlets
By your signature below, you certify that the recorded property restrictions and protective covenants for this
project shall include all the applicable items required in the above form, that the covenants will be binding
on all parties and persons claiming under them, that they will run with the land, that the required covenants
cannot be changed or deleted without concurrence from the NC DWQ and that they will be recorded prior to
the sale of any lot.
V. SUPPLEMENT FORMS
The applicable state stormwater management permit supplement form(s) listed below must he submitted for
each BN1P specified for this project. Contact the Stormwater Permitting Unit at [phone] for the status and
availability of these forms. Forms can be downloaded from htW://h2o.enr.state.nc.us/su/bmp forms.htm.
Form SW401-Low Density
Form SW401-Curb Outlet System
Form SW401-Off-Site System
Form SW401-Wet Detention Basin
Form SW401-Infiltration Basin
Form SW401-Infiltration Trench
Form SW401-Bioretention Cell
Form SW401-Level Spreader
Form SW401-Wetland
Form SW401-Grassed Swale
Form SW401-Sand Filter
Form SW401-Permeable Pavement
Form SW401-Cistern
Low Density Supplement
Curb Outlet System Supplement
Off -Site System Supplement
Wet Detention Basin Supplement
Infiltration Basin Supplement
Underground Infiltration Trench Supplement
Bioretention Cell Supplement
Level Spreader/Filter Strip/Restored Riparian Buffer Supplement
Constructed Wetland Supplement
Grassed Swale Supplement
Sand Filter Supplement
Permeable Pavement Supplement
Cistern Supplement
Form SWU-101 Version 09.25.08 Page 3 of 4

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 Office. (Appropriate office may be found by locating project on the
interactive online map at http://h2o.enr.state.nc.us/su/msi maps.htm)
1. Please indicate that you have provided the following required information by initialing in the space provided
next to each item.
InjA�pls
• Original and one copy of the Stormwater Management Permit Application Form
• Original and one copy of the Deed Restrictions & Protective Covenants Form (if
required as per Part IV above)
• Original of the applicable Supplement Form(s) and O&M agreement(s) for each BMP
• Permit application processing fee of $505 (Express: $4,000 for HD, $2,000 for LD)
payable to NCDENR 156
• Calculations & detailed narrative description of stormwater treatment/management
• Copy of any applicable soils report
• Two copies of plans and specifications (sealed, signed & dated), including:
- Development/Project name
- Engineer and firm
-Legend
North arrow
- Scale
- Revision number & date
- Mean high water line
- Dimensioned property/project boundary
- Location map with named streets or NCSR numbers
- Original contours, proposed contours, spot elevations, finished floor elevations
- Details of roads, drainage features, collection systems, and stormwater control measures
- Wetlands delineated, or a note on plans that none exist
- Existing drainage (including off -site), drainage easements, pipe sizes, runoff calculations
- Drainage areas delineated
- Vegetated buffers (where required)
VII. AGENT AUTHORIZATION
If you wish to designate authority to another individual or firm so that they may provide information on your
behalf (such as additional information requests), please complete this section. (ex. designing engineer or firm)
Designated agent (individual or firm):Cavanaugh & Associates. P.A.
Mailing Address:130 North Front Street, Suite 202
City:Wilmington State:NC Zip:28401
Phone: (910 ) 392-4462 Fax: (910 ) 392-4612
Email:[e-mail]
VIII. APPLICANT'S CERTIFICATION
I, (print or type name of person listed in General Information, item 2) i. Michael Moore
certify that the information included on this permit application form is, to the best of my knowledge, correct and
that the project will be constructed in conformance with the approved plans, that the required deed restrictions -
and protective covenants will be recorded, and that the proposed project complies with the requirements of 15A
NCAC 2H .1000.
Date: G — l 7 — © l
Form SWU-T01 Version 09.25.08 Page 4 of 4

REC'D A U G 13 2009
August 18, 2009
CAVANAU G H
Solutions through integrity and partnership
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Attn: Ms. Kelly Johnson
127 Cardinal Drive Extension
Wilmington, North Carolina 28405
Re: DENR - DWQ Stormwater Management Permit Modification - #SW8 050518
Surf City Community Park
Surf City, Pender County, North Carolina
Dear Ms. Johnson:
In response to your email dated August 11, 2009,Cavanaugh & Associates, P.A., on behalf of
the Town of Surf City, hereby submits the following information to NCDENR - Division of Water
Quality for review of the Stormwater Management Permit Application for the above mentioned
project.
To facilitate your review of the enclosed documentation, the following is a list of the requested
items constituting this submittal:
Item
No.
Description
Original
Copies
1
Watershed Classification Package
1
2
Surf City Community Park Stormwater Management Plan Set
2
Please do not hesitate to contact our office should you have any questions, comments, or
require any additional information.
Regards,
CAVANAUGH & ASSOCIATES, P.A.
Edward "Ted" R. Burke, PE
Attachments
cc: Michael Moore, Town of Surf City 1�`;! '.

�h)Gk i&(� §Y sbl4t-)- Calk 5
Surf City Community Park and Recreation Center
�JO
(-
SW8 050518
Modification
August 2009
DA1: Increasing total area to pond, adding some BUA
DWQ
Proposed
Proposed
Permitted
Proposed
DA2: Increasing total area not to pond, adding some BUA
August
2009
2009
2005
Excess
1 1,2009
(2008&1995
(2008&1995
(1995 Rule)
(2008 Rule)
Review Calcs
Rules) m
Rules)
(data pero;
(data per plan)
Total Site 13A1 + D
Drainage area, total
963,734
963,7 44
283,140
680,594
ft2
Impervious area, total
164,306
164,306
94,090
70,216
fe
%Impervious (Overall proposed for whole
17.05%
17.05%
33.23%
10.32%
site: 25% max, 1995,SA
Lour Deal Portion not to Pond D,A
Drainage area, not to pond
477,468
477,46€i
141,570
335,898
ft2
Impervious area, not to pond
29,143
29,143
0
29.143
ft2
%Im ervious area, not to and
6.10%
6.10%
Densityfth Portion to Ponds DAi
Drainage area, to and
486,266
486,266
141,570
344,696
If?
Drainage area. to d
11.16
3.25
acres
Impervious area, to and
135,163
135,163
94,090
41,073
ft2
on -site buildings
19,128
19,128
16,988
2,140
it'
on -site streets
35,620
35,620
32,670
2,950
fe
on -site parking
56,744
56,744
23,958
32,786
ft2
on -site sidewalks
9,529
9,529
6,098
3,431
ft2
other on -site
14,142
14,142
14,375
-233
ft2
offsite
01
0
0
0
fe
%Impervious area, to pond (Proposed
27.80%
27.80%
66.46%
11.92%
Excess: 12% max. 2008.SA)
"Post -day
1.5" Storm:
Depth, 1.5"
0.300
1-5!45,612
0.300
1.5
0.648
1.5
anch
Volume, 1.5"
1yr24hr Storm:
Depth, 1 r24hr
18,245245
3.75.75
7,5980
45,613612
38,015
45,613612
11,470
11,470
359.704
-;ft3
inch
rf
if
34,1431if
if
Volume, 1 r24hr, re
Volume, 1 r24hr, post
Volume, 1 r24hr, re/ ost
Volume to Control:
Volume to Control (permitted, 2005):
)nd_DesW Parameters.
TSS %
90%
90%
85%
Average Depth, calculated
2.64
2.64
it
Average Depth, used for SA/DA
3.00
3.00
3.00
UPermftolProvided
318,205
318,205
45,613
236,733
.359,704
fe
113
uTem P.IProvided
44,8421
uTem PoolRe uired
SAProvided PermPool
45,6131
120,6291
45,612
120,629
112,322
ft3
ft2
SARe uired PermPool
15,8431
15,840
ft2
SAProvided Tom Pool
121,762
121,762
26.001
26,001 25.00
ft2
ElevPermP°°l
26.00
EIeVTem Pool
26.37
26.37
26-371 28.00
ft
SA/DA Ratio (used to get SARe uired)
3.26
N/A
3.26
N/A NIA
ift3
Forebay volume
N/A
Ind Divttarge
VTem PoolProvided
44,842
45,613
It3
Length, Weir
0.35
0.35
0.35
it
Cw
Headm,,r (Ho)
Avg Driving Head H'
3.0
0.37
0.2467
3.0
0.37
0.2467
ft
it
Time to drawdown
Time to drawdown
348,6051
4.0351
354,59Ei
4.104
sec
day

Surf City Community Park and Recreation Center
SW8 050518 Modification
August 2009
Rough Estimate Per FnainPPr
Elevation
(ft)
Area
(ft2)
Volume
(ft3)
Volume
(ft3)
Volume, Cumulative
(ft3)
28.00
128,173
fl440,339
27.00
123,627
125,900
125,900
566,233
26.50
122,128
61,439
61,439
440,333
26.37
121,762
15,85314,877
378,894
26.00
120,629
4 842
45,812
364,017
25.00
117,805
119,217'
318,205
24.00
103,202
110,5041
14 ,988
110,504
198,988
23.00
73,767M
88,485
/ 88,485 §
88,485
88,485
From AutoCad
2.16% Difference in volume

SURF CITY
COMMUNITY PARK
PENDER COUNTY
NORTH CAROLINA
APPROX. PROJECT INC HIGHWAYS, �10/50
LOCATION.
lip -
_I F' .
T-t' ` J. H. BATTS ROAD
.�F'• S.R.1612 40,
11<J �,FJ'ti r•. � �• _ .' 1,1 - .Trr. Ft r.': �" �• f °�Y.;,.✓ ,:6 Sr� r �gr�• -
SEA
wr_• � f„�y� � ,i` °�� �'. �_ �' � �r, -:Y. .raj- ' _ !� •'- : •'4 ��y 1 +"p�J�� _
IL•; "
EDENS
LANDING
1.
PROJECT INFORMATION
SURF CITY COMMUNITY PARK
LATITUDE: 340 26 23.35"N
LONGITUDE: 7r 33' 52.63" W
QUAD: HOLLY RIDGE
RECEIVING
STREAM
BASIN
STREAM
STREAM
CLASS
INDEX
1
INTRACOASTAL
WATERWAY
SA; HQW
CAPE FEAR
18-87-(54)
SITE PREVIOUSLY PF_RMITTED UNDER PERMIT # SW8050518
CAVANAU G H
Solutions through lntegrity and partnership
cwdv-wh6NemJ .PA IJOIVdY1N sftl. 2ax■W wn;wA810f BfUm- B]N98Y vMYw. vamw YduEb"A
LOCATION
NOT TO SCALE

Permit No.
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
WATER QUALITY CLASSIFICATION REQUEST FORM
This i`oan may be phdocopleri for use as an original.
I. PROJECT INFORMATION
In order to determine the receiving stream for a project in a coastal county or whether a State
Stormwater Management Permit will be required for a project in a non -coastal county, the
classification of the closest downslope surface waters (the surface waters that any sheet flow or
overflow from the project would flow toward) must be determined. Please complete Sections I and II
below. DQW Staff will determine the receiving stream classification, complete Section III, and return
the completed form to you.
1. Project Name: Surf City Community Park County: Pander
2., Contact Person: Everett Gunton
3. Mailing Address: 130 North Front Street, Suite 202
4. City VUilmin_gton State NC Zip 28401 Phone No. 910-392-4462
5. Name of closest downslope surface waters: Intracoastal Waterway
6. Signature of contact person: C_-- ,�n( T Date: d
7. Is a Sedimentation Erosion Control Plan or a CAMA Major Permit required? ®YES ❑NO
H. REQUIRED ITEMS
An 8.5" x 11" copy of the appropriate portion of a USGS quad sheet showing the projects
property boundaries, receiving stream, major roads nearest
town or city must be attached.
III. CLASSIFICATION REQUE om lgted by Regional Office personnel)
1. Name of surface waterh�rz,cacrs!?�o� ,eravcF
2. River Basin: 6!a0e Fear- Index No. S-. 19147
- '
3. Classification (as established by the EMC): .5_A ; H QVJ
4. Proposed Classification, if applicable:
5. State Stormwater Management Permit required? [AYES ❑NO
6. Signature of Regional Office personnel: Date -/t•
cc: UPW - Regional Office
Consultant
Building Inspector
Central Files
Form SWU-111 Version 10.99
�)ITUSC `ice SI ip WITH
'% W tt, �E 1?tsr T"'U
mew k'No Wcx;eoC-, V- —A&0M Pis /oq

Johnson, Kelly
From: Ted Burke[[e-mail]]
Sent: Wednesday, August 12, 2009 3:36 PM
To: Johnson, Kelly
Subject: RE: Surf City Park, SW8 050518
Attachments: SC Park Watershed Classification - BIMS. pdf, 2a - Appendix B - DWQ Watershed
Classification Approval.PDF
Kelly,
Thanks for the prelim review and reply. Please see responses:
1. Receiving Stream: We had submitted a watershed classification request to DWQ and received a response
(please see attached) stating that the property drained to both the ICWW and Becky's Creek (based upon
USGS topo). We believe, based upon reviewing a site topo survey that the majority of the project (and the
stormwater BMPs) drains to the ICWW. Also, please note that the ICWW at this location and Becky's
Creek all have the same watershed classification as well as proximity to our site.
2. Level Spreader: I have changed the detail so that it does not read "wood". We will install a composite (not wood)
material. The length of the LS is listed on Sheet CA. 1, but will be added to the detail as well.
3. 1 will have two (2) copies of the revised (8/12/09), complete, set of plans dropped off to your office first thing
Thursday morning.
I'll give you a call shortly to follow up and make sure we've got everything squared away. I appreciate your time and
attention to this project, Kelly.
Regards,
Ted
Edward "Ted" R. Burke, P.E.
Cavanaugh & Associates, P.A.
From: Johnson. Keliv rmailto:kellv.p.iohnson(Mncdenr.onv]
Sent: Tuesday, August 11, 2009 3:32 PM
To: Ted Burke
Subject: Surf City Park, SW8 050518
Ted,
I got your voicemail & left you a response on your voicemail regarding the status of the project. Since i have a horrible
case of laryngitis, I thought I would summarize that here:
1.) Receiving stream: The original permit says that the stream is Becky's Creek, and this application says the
Intracoastal Waterway. Was the original stream incorrect?
2.) Level spreader: Sheet C.7.10 stamped received on 7/24/09 show the level spreader detail. In one place it says
"wood" in another place it says "composite". I also don't see the length on the detail.
3.) Plans: I received one sheet each of C.7.10 and C.2.1 on 7/24/09. We will need two sets of plans; one to keep for
our files and one to stamp approved for the applicant.
I wasn't going to do a formal add info since this is pretty minor, but if you can get me that information I will draft up the
permit, send it to Linda for peer review and then hopefully it won't be long after that.
Thanks,
Kelly

*** My email has changed to [e-mail]
K.eLL,. _JohwSow
Kelly Johnson
Environmental Engineer
Division of Water Quality
127 Cardinal Drive Extension
Wilmington, NC 28405-3845
Office: 910.796.7345
Fax: [phone]
E-mail correspondence to and from this address may be subject to the North Carolina Public Records Law and may be
disclosed to third parties.

Name of Stream Description
Cuff. Class Date Prop. Class Basin Stream Index #
Morgans Creek
From source to Long
C;Sw
Creek
Cowpen Branch
From source to
C;Sw
Northeast Cape Fear
River
Tonys Creek
From source to
C;Sw
Northeast Cape Fear
River
Lagoon Creek
From source to
C;Sw
Northeast Cape Fear
River
Intracoastal
From Morris Landing to
SA;HQW
Waterway
the eastern mouth of
Old Topsail Creek
Batts Mill Creek
From source to
SA;HQW
(Barlow Creek)
Intracoastal Waterway
County Line Branch
From source to Batts
SA;HQW
Mill Creek
Old Mill Creek
From source to
SA;HQW
Intracoastal Waterway
Becky& Creek
From source to
SA;HQW
(Bishops Creek)
Intracoastal Waterway
Virginia Creek
From source to
SA;HQW
Intracoastal Waterway
Mullet Run
From source to Virginia
SA;HQW
Creek
Topsail Sound
Entire Sound
SA;HQW
Bdnks Channel
From New Topsail Inlet
SA;HQW
to Topsail Sound
Nixons Creek
From source to
SA;HQW
Intracoastal Waterway
Intracoastal
From the eastern mouth
SA;ORW
Waterway
of Old Topsail Creek to
the western mouth of
Howe Creek
Topsail Sound and
All waters between the
SA;ORW
Middle Sound ORW
Barrier Islands and the
Area
mainland located
between a line running
from the western most
shore of Mason Inlet to
the southwestern shore
of Howe Creek and a
line running from the
western shore of New
Topsail Inlet to the
eastern mouth of Old
Topsail Creek
Old Topsail Creek From source to SA;HQW
Intracoastal Waterway
09/01/74
Cape
Fear
18-74-55-12
04/01/59
Cape
Fear
18-74-56
04/01/59
Cape
Fear
18-74-57
04/01/59
Cape
Fear
18-74-58
08/09/81
Cape
Fear
18-87-(5.5)
08/09/81
Cape
Fear
18-87-6
08/09/81
Cape
Fear
18-87-6-1
08/09/81
Cape
Fear
18-87-7
08/09/81
Cape
Fear
18-87-8
08/09/81
Cape
Fear
18-87-9
08/09/81
Cape
Fear
18-87-9-1
08/09/81
Cape
Fear
18-87-10
08/09/81
Cape
Fear
18-87-10-1
08/09/81
Cape
Fear
18-87-11
01/01/90
Cape
Fear
18-87-(11.5)
01/01/90 Cape Fear 18-87-11.7
08/09/81 Cape Fear 18-87-12
Page 7 of 8

.Johnson, Kelly
From: Ted Burke[[e-mail]]
Sent: Wednesday, August 12, 2009 3:36 PM
To: Johnson, Kelly
Subject: RE: Surf City Park, SW8 050518
Attachments: SC Park Watershed Classification - BIMS.pdf, 2a - Appendix B - DWQ Watershed
Classification Approval. PDF
Kelly,
Thanks for the prelim review and reply. Please see responses:
1. Receiving Stream: We had submitted a watershed classification request to DWQ and received a response
(please see attached) stating that the property drained to both the ICWW and Becky's Creek (based upon
USGS topo). We believe, based upon reviewing a site topo survey that the majority of the project (and the
stormwater BMPs) drains to the ICWW. Also, please note that the ICWW at this location and Becky's
Creek all have the same watershed classification as well as proximity to our site.
2. Level Spreader: I have changed the detail so that it does not read "wood". We will install a composite (not wood)
material. The length of the LS is listed on Sheet CA. 1, but will be added to the detail as well.
3. 1 will have two (2) copies of the revised (8/12/09), complete, set of plans dropped off to your office first thing
Thursday morning.
I'll give you a call shortly to. follow up and make sure we've got everything squared away. I appreciate your time and
attention to this project, Kelly.
Regards,
Ted
Edward'Ted" R. Burke, P.E.
Cavanaugh & Associates, P.A.
From: Johnson, Kelly [mailto:[e-mail]]
Sent: Tuesday, August 11, 2009 3:32 PM
To: Ted Burke
Subject: Surf City Park, SW8 050518
Ted,
I got your voicemail & left you a response on your voicemail regarding the status of the project. Since I have a horrible
case of laryngitis, I thought I would summarize that here:
1.) Receiving stream: The original permit says that the stream is Becky's Creek, and this application says the
Intracoastal Waterway. Was the original stream incorrect?
2.) Level spreader: Sheet C.7.10 stamped received on 7/24/09 Show the level spreader detail. In one place it says
"wood" in another place It says "composite". 1 also don't see the length on the detail.
3.) Plans: I received one sheet each of C.7.10 and C.2.1 on 7/24/09. We will need two sets of plans; one to keep for
our files and one to stamp approved for the applicant.
wasn't going to do a formal add info since this is pretty minor, but if you can get me that information I will draft up the
permit, send it to Linda for peer review and then hopefully it won't be long after that.
Thanks,
Kelly

*** My email has changed to [e-mail]
1'e.eI.I.WA106SOY6
Kelly Johnson
Environmental Engineer
Division of Water Quality
127 Cardinal Drive Extension
Wilmington, NC 28405-3845
Office: 910.796.7345
Fax: [phone]
E-mail correspondence to and from this address may be subject to the North Carolina Public Records Law and may be
disclosed to third parties.

RECD J U L 242009 C AVA N A U G H
Solutions through integrity and partnership
July 23, 2009
Ms. Kelly Johnson
Environmental Engineer
NC DENR — Division of Water Quality
127 Cardinal Drive Extension
Wilmington, NC 28405
Re: Request for Additional Information
Stormwater Project No. SW8 050518
Surf City Community Park and Recreation Center
Pender County
Dear Ms. Johnson,
Cavanaugh & Associates, P.A. received your letter dated July 16, 2009. On behalf of
the Applicant, Town of Surf City, Cavanaugh & Associates, P.A. has reviewed your letter
and we are addressing each item below. WQ's comments are repeated in bold, and the
responses and corrections are italized.
1. Volume/area/depth summary: Please provide a table summarizing the
elevations, surface area, incremental volume, and accumulated volume for
the sediment storage elevation, the "bottom" sediment clean out elevation,
the permanent pool, and the temporary pool. If the data is available in
AutoCAD, please also provido this data for the elevation corresponding to
the bottom of the shelf, and the top of the shelf, in order to establish a
summary of volume contained at each elevation of the pond.
We have accumulated this information into a design summary table for Your
ease of review. Please see the Wet Detention Pond Design Sheet.
2. Calculations and number agreement: Please revise some of the
calculations in the package. I will email your engineer a list of items that
either need to revised or clarified. A summary is provided below:
a. Pond elevations: The 2006 permit had a permanent pool elevation of
26fmsl and a temporary pool of 28fmsl. This proposal has a permanent
pool of 26.00 fmsl and a temporary pool of 26.15fmsl. Has the
permanent pool been raised in order to address hydrological realities
onsite? Or, has it been intentionally elevated as a result of having to
regrade the pond to accommodate more volume? Existing ponds can
be used to accommodate more volume by raising the temporary pool
and corresponding discharge weir (or orifice) if 1.) The SA/DA
requirement is met when considering the resultant new percent
imperviousness in its determination, and 2.) The pond does not have to
be regraded to accommodate more volume. If this pond has to be
regraded to accommodate this volume, it will have to meet the most
recent wet pond design requirements. Also, please recheck your SA/DA
determination and note a small typo on the temporary pool elevation on
the outlet structure detail.

Ms. Kelly Johnson
Surf City Community Park
SW 0505 18 Mod.
Pender County
Page 2 of 5
The permanent pool elevation has been raised from 25.Ofmsl to 26.Ofmsl to
accommodate the 1.0-ft sediment storage requirement, per our previous
submittal. The existing bottom of the pond is 22.Ofmsl. The effective
bottom of pond is therefore 23.Ofmsl which allows for a permanent pool
depth of 3.0-ft.
As we are utilizing and existing pond that was constructed significantly
larger than is need for stormwater management and is significantly larger
than is need for this revised design, please note that this pond has more
than sufficient capacity to manage the stonnwater runoff. The original
permit stated that the temporary pool elevation is 28fmsl when in fact, that
is the maximum pool elevation possible. The design volume of the original
permit is stated to be 59, 000 gal, or 7, 887ft3.
The new SAIDA ration is more than adequate as is demonstrated on the
Wet Detention Pond Design Sheet (120, 629ft2 provided, 15,8402
required). The SAIDA value has been updated.
b. 1yr24hr pre -development volume: Please clarify how 34,678 ft'was
determined for the pre development 1yr24hr storm volume. Because the
design storm is the greater of either the difference in the pre and post
1yr24hr storm or the volume of the 1.5" storm, the treatment volume
hinges on this calculation.
The 1 yr24hr pre -development volume has been changed to 13, 831 ft3.
Please refer to the enclosed revised Drainage Area Design Sheet, pg 2 of
5, for the calculation. Please note that the 13, 831 fPis greater than the
7,598 f13 listed in the comparison spreadsheet provided by DWQ. This is a
function of the difference in the Rv value used. Regardless of which pre -
development volume is used (13,83Wor 7, 598ft3), the 1yr24hr post value
of 45, 612ft3 is the restricting volume.
The 60,689 f13 provided between the elevations of 26.00 and 26.50 (max
primary spillway elevation) more than adequately address this discrepancy.
c. Temporary volume provided: Please clarify how 60,689 ft3 was
determined, or show this value in the volumelarea/depth summary.
369,704 Wwas permitted in 2006.This value appeared as the temporary
pond volume on the 2006 supplement, and was carried over into the
permit. Perhaps that value was recorded in error since it is so much
larger than the one you have reported, but please address this
discrepancy.
1 agree that perhaps, when the permit was originally written, the 359, 704ft3
was likely recorded erroneously as the temporary pool volume rather than
the total pond capacity above the permanent pool. In fact, if you add the
volumes from the Wet Detention Pond Desian Sheet from elevation
25.0fmsl to 28fmsl it equals -367, 245ft3.
The volume of 60,689 fi3was determined by interpolating the volumes of the
pond between the contour elevations of 26 and 27fms1. The interpolation

Ms. Kelly Johnson
Surf City Community Park
SW 0505 18 Mod.
Pender County
Page 3 of 5
was targeted to return the surface area of the pond at the primary spillway
elevation (rim of riser) which is 26.50.
The surface area at 26.50 was interpolated to be 12Z 128 ft2. This value
was used to calculate the volume between elevations 26.00 and 26.50 with
the average end method.
For the purpose of this permit modification, the term "temporary pool
elevation" is equal to the elevation of the design storm rise. Therefore, the
1 yr24hr design volume of 45, 613ft results in a rise to the elevation
26.37fmsl. The same interpolation method was used to calculate the
surface area, and thus volumes at this elevation.
d. Permanent pool surface area: 112,322 ft2was permitted in 2005. This
pond is reported to have 120,629 fe, which is larger than the original.
This is likely the result of the change in elevation of the permanent pool.
However, if this pond has to be regraded to accommodate this volume,
please see 2(a) above.
The surface area of 120,629 tt2is the surface area of the existing pond at
the elevation of the proposed permanent pool (26.00ft MSQ. No regrading
will be necessary to accommodate this volume.
e. Weir discharge/drawdown time: Your cover letter references a
"Drawdown Calculations" summary. Please direct me to those
calculations in your package. I will forward your engineer some detailed
questions (which may already be addressed in the drawdown
calculations summary.)
The drawdown calculations are included in this package and are titled
"Drawdown Design Sheet':
f. Supplements/forms: If any numbers need to be revised in the
calculations, please also update the associated supplements and
forms.
The Wet Detention Pond Supplement has been revised and is included in
this submittal.
3. Drainage easements: Please provide the widths and swale inverts of the
drainage easements.
This project will be wholly owned and operated by the Town of Surf City
(Owner) and as such does not require any easements.
4. Impervious area:
a. Dimensions: Please provide the dimensions for all buildings and other
impervious area.
The existing Community Center Building, parking lot, and tennis courts
have been 'dimensioned'. The proposed impervious surfaces have existing
dimensions or calls, which adequately describe their proportions.

Ms. Kelly Johnson
Surf City Community Park
SW 0505 18 Mod.
Pender County
Page 4 of 5
b. GeoWeb: Please clarify that the GeoWeb was accounted for as pervious
surface. If it was not, please show its dimensions on the plans and
provide a permeable pavement supplementl0&M agreement.
As explained in our previous response letter, dated June 16, 2009, the
GeoWeb will not function as an impervious surface. The GeoWeb is to be
installed as a permanent erosion control device. The GeoWeb will not be
installed with a gravel base nor will the base be compacted beyond what is
typical for a till slope to maintain its shape and structural integrity and
therefore does not contribute to stormwater runoff any more so than the
adjacent slopes (without GeoWeb).
5. Level spreader: Please note that wooden level spreaders are not allowed.
Please provide an alternate, durable material and also show its length on the
plans.
We are in full agreement with DWQ that wooden level spreaders should not be
allowed. Because of this, as was originally submitted, we have called on our
plans (Detail 1 C.7.10) for the level spreader to be constructed of composite
material. Also, as shown on sheet C.4.1, the length of the level spreader is
called out to be 92 LF.
6. Updating calculations: Please note that a revision to one number may have a
domino effect on other numbers, which may require revision of the
applications, calculations, supplements, plans, details, and associated
documentation. Please verify all numbers are correct to ensure consistency in
the application documents. I have made considerable effort to identify areas of
concern, however, because substantial changes are warranted please carefully
review your resubmittal in order to ensure that all of the required items are
submitted and correct. Please also note that any calculations in your re -
submittal must be stamped.
Noted. Please note that we have made considerable effort to be thorough,
detailed, and clear in our submittal package for your review. The changes and
clarifications included herein have been reviewed and sealed by a North
Carolina licensed professional engineer.

Ms. Kelly Johnson
Surf City Community Park
SW 0505 18 Mod.
Pender County
Page 5 of 5
Please do not hesitate to contact our office should you have any questions, comments,
or require additional information.
Thank you.
Regards,
CAVANAUGH & ASSOCIATES, P.A.
Edward "Ted" R. Burke, P.E.
910-619-1256
910-392-4612 (fax)
cc: J. Michael Moore, Town Manager
Town of Sur, City

Sint By: LAND MANAGEMENT;
910 452 0060 ; Jul-31-02 8:38AM; page 212
ad 592
904A&Wlm, JiriA bra MV'q
sum-ooei
2 .,fly!
Z .,y S:.9ilalrG ,
-4" July 31, 2002
Margaret Gray
W.K. Dickson
909 Market Street
Wilmington, NC 28401
.PW& "¢
ytT.A
ssad 9l ,awlGo ,r�,.,.
ft-a-j,6n, -4V .germ
Reference: Proposed 23 acrc Surf City Community Frick on J.H.Batts Road in Surf City, NC.
Dear Ms. Gray:
1 have recently had t6- plmsuro to cvaluate the above referenced tract. The site was
evaluated using the 1987 US Army Corps ofLngincors Wetland Manual and Soil 'Taxonomy
(USDA, 1975) as a guide. The site is characterized as excessively well drained to somewhat
poorly drained soils on uplands. Three major soil series were identified; Albin, Onslow, and
Mandarin. The Alpin soil series (Thermic, coated Typie Quartzipsamments) is an excessively
well drained soil on uplands. The Onslow soil series (Find -loamy, siliceous, thermic Spodic
Palrudults) is a moderately well drained soil on uplands. A few localized depressions contained
Mandarin soils. The Mandarin soil series (Sandy, siliceous, thermic Typic Haplohurnods) Is a
somewhat poorly drained upland soil, No wetlands were identited on this tract, Examination of
aerial photography and ground truthing both confirm that this site is entirely upland. There are 2
areas where additional input from tite US Army Corps of Engineers is warranted. The existing
sand pit has revegetated in localized areas with hydrophytic vcgotatlon and the northeastern
property line is a 6 to 8 foot deep ditch dug In uplands. Our offiic:e has remutly rwelved
inconsistent advice on whether ditches cut in uplands are to be considered jurisdictional wetlands.
I have contacted Lillette. Moore (USACE, Wilmington, Regulatory Branch) and she has agreed to
visit the site on August 14, 2002 to look at the 2 problem areas. As you know, no filling or
excavating can occur in 404 Wetlands without proper permits from appropriate State and Federal
Agencies.
Please do not hesitate to contact ine if I can be of any more assistance in this project. I
will provide you with an additional project update after Ms. Moore's site visit in August. I may
be reached at 910-452-0001, 910-471-0777, or at iwillia=@hghggmup,net .
Sincerely,
John n Williams
NC Licensed Soil Scientist, 41 t 'l3
SC Professional Soil Classifier, #58
A
rn
0
0
cy
.e5
.--I

SURF CITY COMMUNITY PARK
TOWN OF SURF CITY,
FENDER CCUNW,
NORTH CAROLINA,
REVISED ST° RIU WATER MANAGEMENT
HIGH DENSITY PERMIT APPLICATION
SUPPLEMENTAL CALCULATIONS
SEAL..-f
July 23, 2009
40 • <
Al:"A N as U rz 1�i
puru IF
We provide superior client service and environmentally sound
designs through integrity, communicetion, and partnership.
+COnsutting Engineers Land Surveyors
< o mentsi ► r fe s onais
. ..., ..eo f , .,,s - o as
Design Professi
130 K ROM Street, Suit® 202, VV%Ww-tin, WOM Cwokr9& 2840t . Fhone 91W22•4, Fax BI OIL + 612

DRAINAGE AREA DESIGN SHEET
Existina Site Totals
C
A
A ac
1
Buildings
0.95
17.025
0.39
2
Street
0.95
35,620
082
3
ParkIng
0.95
25 74S
059
4
Sidewalk
0.95
3,407
0.08
5
Other Tennis Courts
0.95
14,142
0.32
6
Wooded, sparse ground liter
036
867 806
19.92
7
Weighted
C
0.41
Total
Area
903,7341
22.12
Im ervious Area
95,929
2.20
Percent Im ervious 9.95%
Post -Development Site Totals
C
A (
A ac
--L
Buildings
0.95
19,128
0.44
2
Street
0.95
36,620
0.82
4
Parking
Sidewalk
0.98
74,655
1.71
0.95
20,061
0.48
5
Other Tennis Courts
0.95
14,142
0.32
6
Wooded, sparse ground Iltter
0 35
799,426
18.36
7
Wel
hied C
0.45
Total
Area
983,734
22.12
Impervious Area
164,3061
3.77
Percent Im ervlous 17.05%

DRAINAGE AREA DESIGN SHEET
uN i e: 212brMus SHEET 2 OF 5
PROJECT: Surf City Community Park DESIGN BY: LAM
PROJECT NO.: 041.08.015 CHECKED BY: ERB
DESCRIPTION: Drainage Area Design Sheets
DRAINAGE AREA 1- Existing
C
A (itz)
A ac
1
Buildings
0.95
17.025
0.39
2
Street
0.95
35.620
0.82
3
Parking
0.95
25,735
0.69
4
Sidewalk
0.96
3.407
0.08
5
Other ennisCourts
0.96
14,142
0.32
6
Wooded, sparse ground litter
0.36
390.337
9.96
7
Weighted
C
0.47
Total
Area
_ 486.2661 11.16
Impervious Area
95,929 2.20
Percent Impervious 19.7%
Volume Runoff to be Controlled From 1.5" Storm
Rv-0.06+0.009(I) (Simple Method, Scheuler)
1= 19.7 Percent Impervious
Rv= 0.23 Runoff Coefficient
V=P*RV*Ad
P= 1.6 in Design Rainfall
V= 0.318 ac-ft Volume To Be Treated
V= 13,831 fe Volume To Be Treated

DRAINAGE AREA DESIGN SHEET
DATE: 2/28/2009 SHEET 3 OF 5
PROJECT: Surf City Community Park DESIGN BY: LAM
PROJECT NO,: 041.0a.015 CHECKED BY: ERB
DESCRIPTION: Drainage Area Design Sheets
DRAINAGE AREA 2- Existing
C
A
A ac
1
Buildings
0.95
-
0.00
2
Street
0.95
IF_ -
0.00
3
4
Parking
Sidewalk
Coss
0.95
0.00
0.00
5
Other Crennis Courts
0.96
!i
0.00
6
Wooded, sparse ground litter
M35
477.468
10.96
7
Weighted
C
0.35
Total
Area
477,488 10.96
Impervious Area
0.00
Percent Impervious 0.0%
Volume Runoff to be Controlled From 1.5" Storm
Rv=0.05+0.009(I) (Simple Method, Scheuler)
1= 0.0 Percent Impervious
Rv= 0.05 Runoff Coefficient
V=P"Rv'Ad
P= 1.5 In Design Rainfall
V= 0.069 ac-ft Volume To Be Treated
_
V= 2,964 ft3 Volume To Be Treated

DRAINAGE AREA DESIGN SHEET
DATE: 2/25/2009 SHEET 4 OF 5
PROJECT: Surf _City Community Park DESIGN BY: LAM
PROJECT NO.: 041.08.015 CHECKED BY: ERB
DESCRIPTION: Drainage Area Design Sheets
QoAx9
DRAINAGE AREA 1- Post -Development
C
; A (tt2)_
A ae
1
Buildings
0.85
19,128
0.44
2
Street
0,96
35,620
0.82
3
Parkina
0.95
755 "
1.30
4
Sidewalk
0,96
9.529
0.22
5
Other(Tennis Courts
095
I 14.142
0.32
6
Wooded, sparse ground litter
096
351,103
8.06
7
Weighted
C
0.52
Total
Area
486,28E
11.16
Impervious Area
135,163
3.10
Percent Impervious 27.8%
Volume Runoff to be Controlled From 1.5" Storm
Rv■0.05+0.009(I) (Simple Method, Scheuler)
1= 27.8 Percent Impervious
Rv= 0.30 Runoff Coefficient Q�1
P= 3.8 in Design Rainfall
V= 1.047 ao-tt Volume To Be Treated
V= 45,612 fe Volume To Be Treated _qb
V=P"RWAd
P= 1.5 in Design Rainfall
V- 0.419 ao-ft Volume To Be Treated
V= 18,245 it' Volume To Be Treated

DRAINAGE AREA DESIGN SHEET
DATE: 2/25/2009 SHEET 5 OF 5
PROJECT: Surf City Community Park DESIGN BY: LAM
PROJECT NO.: 041.08.015 CHECKED BY: ERB
DESCRIPTION: Drainage Area Design Sheets
DRAINAGE AREA 2- Post-Develooment
C
A f!x
A (ae
1
Buildings
0.95
0.00
2
Sheet
011d1
0.
3
Parkin
0.95
17,811
0.4141
4
S'dewalk
0.95
1t,33Z
0.26
5
Other(Tennis Courts
0.95
1
0.00
6
Wooded, sparse ground litter
035
446 =
10.29
7
Weighted
C
0.39
Total
Area
477,488
10.96
Impervious Area
29,143
0.67
Percent Impervious 6.1 %
Volume Runoff to be Controlled From 1.5" Storm
Rv=0.05+0.009(1)
(Simple Method, Scheuler)
1= 6.1 Percent Impervious
Rv= 0.10 Runoff Coefficient
V=P"RvAd
P= 1.5 in Design Rainfall
V= 0.144 ac-ft Volume To Be Treated
V= 6,263 ft3 Volume To Be Treated
A= 0 ftZ Area of Treatment Device
D= 0,00 ft Pool Depth
V=r,_ Level Spreader ft3
Volume of Treatment

WET DETENTION POND DESIGN SHEET
DATE: July 23, 2009 SHEET 1 OF 1
PROJECT: Surf City Community Park
PROJECT NO.:4.03.038
DESCRIPTION: Wet Detention Pond Design
DESIGN BY: ERB
CHECKED BY: WGS
Determination of Pond Geometry
Perm. Pool Depth= 3.5
ft.
DA 486,266
1e Drainage Area
SAIDAI„v= 3 26%
Ratio for Permanent Pool Sizing
SA,.q.= 15,840
Volume Runoff to be Controlled From 1" Storm
Rv=0.08+0.009(I) (Simple Method, Scheuler)
1= 28% Percent Impervious
Rv= 0.30 Runoff Coefficient
V=P'RWAd
P= 3.75 in
Design Rainfall
V= 1.047 ac-ft
V= 46,612 ft'
Volume to Detain in Temporary Pond
FLOOD POOL
Elevation
Area Storage
Storage Depth
ft.
. ft. cu.R
ao-
28.00
128.173
0.00 0.00
27.00
123127 125,900 -'
2.89 1.00
26.50
12,4:128 81,439✓
1.41 1.50
Depth 1.50
Available Storage =
4.30 ac4t
TOTAL STORAGE
TEMPORARY POOL
Elevation,
Area
Storage
Storage Depth
.2.
ou.ft.)
(ao-ft
26.50
IML125
a� 28.37
121,782
14.677
0.34 0.00
.--• 26.00
120,829
48:81$
1.06 0.38
De h
0.38
Available Storage -
1.39 ac t
VO.nd)
Vow
$O,BS9 W
60 669
1
45 612 OK
Actual Temp Pod El:
33.90
TOTAL STORAGE
PERMANENTPOOL
Elevation
Area
Storage
Storage
Depth
(Sq. ft.
ou.ft.
ao-
28.00
120,629
0.00
25.00
117.805
119,217 -
2.74
1.00
24.00
103,202
110,504-
2.54
2.00
23.00
73,787
86,485 v
2.03
3.00
Depth
3.00
Available Storage -
7.30 as-ft
S pontl)
SN.q)
318,203 it3
120,829
>
15.00
OK
TOTALSTORAGE
Sediment Storage provided from Elevation 22.0 to 23.0 ft.

DRAWDOWN
DESIGN SHEET
DATE:
July23, 2009
05:18 PM
SHEET 1 OF 1
PROJECT:
Surf Clty Irks
I.D. NO.:
DESIGN BY: ERB
PROJECT NO.:
WIN
LOCATION:
Surf City, Pander County, North Carolina CHECKED BY: ERB
DESCRIPTION:
Wet Detention Pond Drawdown Calculation
FILE
Static
Bleeddown Rectangular Weir:
S of Weirs 1 Zone: Zone 3
Starepe Volume• 45,M2 ft3 Oprovlded - Cw• L • . 1 S
Required Drawdown 2-6 Days Select a :1 0 ft Weh Len Elev : 290 It
Q2: 02640 ofs C,.r: 30
06: 0.10W rds Ho: 0 37 ft - Maximum Rise
• 1.5-in Runoff Volume h : 0.37 it - Average Driving Head"
•• Ho, Maximum Rise determined from a static stage -storage calculation of tha 3.754n Storm Runoff Volume. Plans see Wet Detention Pond Design Sheet
"• Driving Heed, h, Maximum Rise Elevation
Qprovided: 0.24 cfe Q21Op10
Drawdown Time: 53.6 hre
2.234 days_ OK
Dynamic
Bleeddown Rectangular Weir:
•of-- t Zone: Zone
Starepe Volume• 45.St2 ft3 Oprovided - Cw • L • 1 b
Required Drawdown 2-5 Days Select a : 0 35 ft Wair Len Elev : 29. ft
Q2: 0.2640 cfe Cv: 30
05: 0.1056 de Ho: 037 ft- Maximum Rise
• 1.5-In Runoff Volume h : 0.2466667 it - Average Driving Head"
Ho, Maximum Mae determined from a static elage-storage calculation ofthe 3.75-6r Storm RunoflVolume. Please see Wet Detention Pond Design Sheet
••• Driving Head, h, estimated per NCDENR Stornwater BMP Manuel, sections 3.5.1 & 3.5.2 where h - H'03)
Qprovided: 0.13 cle Q21Qp1Q
Drewdown Time: 98.5 hre
4.104 d _ OK

Project: Surf City Community Park
Project Number: 041.08.015
Date: 2/26/2009 CAVAN AU G H
Designed By: JDL
Design Calculations Design Criteria
Drainage Area:
48,598 sq.ft.
1.12 ac
5-acre Maximum
Impervious Area:
17,811 sq.ft.
Impervious Percent:
36.65%
Rational Coeffient, C:
0 47
Time of Concentration, Tc:
10, 0
5 minute Minimum
Rainfall Intensity, I:
in/hr
Q(10-yr):
3.57 cfs
Cannot exceed 10 cfs
Q (Peak 1 in/hr Storm):
0.52 cfs
Upstream Inv.:
20.60 ft.
Bottom of Channel Inv.:
19.60 ft.
Top of Berm Elev.:
21.10 ft.
Level Spreader Flew
21.00 ft.
Bottom of Filter Strip Elew
19.38 ft.
Length of Filter Strip
50.00 ft.
50' Minimum Length
Width of Filter Strip Required:
112 ft.
100' per 1-ac of Drainage Area
Width of Filter Strip Provided:
150 ft.
Slope of Filter Strip:
3.22%
15% Maximum Slope
Length Required:
46 ft.
13' Minimum/130' Maximum
Length Provided:
50 ft.
Weir Coeffient, Cw:
3.30
Entrance Head, H:
0.10 ft.
Driving Head, Hd:
0.07 ft.
Cross -Sectional Area of Flow, A:
3.36 sq.ft.
Velocity, V:
1.57 ft/sec.
2 ft/sec Maximum
L\rel 59,O«de r
Ga I C5

DA1: Increasing total area to pond, adding some BUA
DA2: Increasing total area not to pond, adding some BUA
Lirainage area, total
Impervious area, total
%Impervious (Overall proposed For whole
25% max. 1995.SA)
to
3. to
other on -site
offsite
%Impervious area, to
Excess: 12% max. 2(
1.5" Storm:
Depth, 1.5"
Volume, 1.5"
1yr24hr Storm:
Depth, 1 yr24hr
Volume, 1yr24hr, pre
Volume, 1yr24hr, post
Volume, 1yr24hr, pre/pol
Volume to Control:
Volume to Control (permitt
and Design Para,-netcrs
TSS %
Average Depth, calculated
M
Ratio (used to
y volume
charge
v. lvr24hrNM
c
1yr24hr flow
at peak
ad (not at pe
ischarge (Cd
calculated at
Surf City Community Park and Recreation Center T-I i
SW8050518Modification RECEIV'I" :_. `
July 16, 2009 Permit Review
DWQ Proposed Proposed Permitt PIaN{ ,6& 4 2009 ,� g
July 16,2009 2009 2009 2005 Excess
Review Calcs (2008&1995 (2008&1995 (1995 Ru p _. (2008 Rule) o
Rules) Rules) V Id
963,7341 963,734 283,140 680,594 ft2
164,3061 164,306 94,090 70,216ft2
lite. 17.05%1 17.05% 33.23% 10.32% T,
been
477,468
477,468
141,570
335198•. changed
29,143
29,143
0
143if
to 13,831.
s.1o°i°
s.1o°�
See D.A.
486,266
486,266
141,570
344,69 fe Design
135,163
135,163
94,09 '
41,073 fe Sheet
19,128
19,128
16, VA
2,140 fe
pg2o5
35,620
35,620
3 d70
2,950 a
56,744
56,744
4,958
32,786 ftz
9,529
9,529
6,096
3,431 ftz Changed✓
14,142
14 142
14,375
to 45,613
0
0
0
0 ftz
27.80%
27.80%
66.46%
---�-
Chang!edeto
Vjim-dw 1
0.0501
0.000
00
45613, per
v °st.d�
0.300
0.300
.648
Vol @ elev
mm�
1.5
1.5
1.6
1.5
irr 26.37.
1.5
18,245
18,246
11,470
n 60689=vol
at primary
Ivr24hr
3.75
3.
I spillway.
lyr24hr, pre
7,598
34, 8
. See Wet
1w24hr, post
45,6131
45,6 2
lyrMr, ore/cost.
38,015
11'1
Det. Pond
TernI
45.613
18;245
11
34,143 Design
7a4
Sheet
90%
90%
85%
(45325
2.64
2.64
+15364)
3.00
3.00
3.00
318,205
318,205
238,733
ft
18,1281,
60;689
359,704
3
f=15,840
45,613
18,245
120,629
120,629
22
1'r
15,843
13,518
fe
121,762,
121,082
121,082
fe
26.001
26.001
N28.
it per temp
26.15
26.15
26.11 28.00
p001
N/A
3 2t3
2.78
3 elev=26.3 ,
N/A
�EIA
N!A ft
0.16
0.16
in/h Holdover
0.47
0.47
_
0.52
0.52
from orig.
0.85
15.72
ft3/s submittal.
0.246
0.230
ft3/s Pond
0.048 not reported
225
2.25
2.25
t depth
0.110
i changed
0.037
0.037
3.0
Please see
per sed.
2.14
0.92
Revised Calcs
[Jay. Vol.
10.99 noire orted
IS now
2.14
4.46
da
3.26 `�

��
NCDENR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue Coleen H. Sullins
Governor Director
July 16, 2009
Mr. Michael Moore, Town Manager
Town of Surf City
PO Box 2475
Surf City, NC 28445
Subject: Request for Additional Information
Stormwater Project No. SW8 050518
Surf City Community Park and Recreation Center
Pender County
Dear Mr. Moore:
Dee Freeman
Secretary
The Wilmington Regional Office received a State Stormwater Management Permit Application for the
project located at 201 Community Center Drive on June 19, 2009. The Division of Water Quality has
conducted a preliminary review of that information and determined that the application is not complete.
The following information is needed to continue the stormwater review:
Volume/area/depth summary: Please provide a table summarizing the elevations, surface
area, incremental volume, and accumulated volume for the sediment storage elevation, the
"bottom" sediment clean out elevation, the permanent pool, and the temporary pool. If the
data is available in AutoCAD, please also provide this data for the elevation corresponding to
the bottom of the shelf, and the top of the shelf, in order to establish a summary of volume
contained at each elevation of the pond.
2. Calculations and number agreement: Please revise some of the calculations in the package. I
will email your engineer a list of items that either need to revised or clarified. A summary is
nrovided below:
a. Pond elevations: The 2005 permit had a permanent pool elevation of 25finsl and a
temporary pool of 28finsl. This proposal has a permanent pool of 26.00 fmsl and a
temporary pool of 26.15fmsl. Has the permanent pool been raised in order to address
hydrological realities onsite? Or, has it been intentionally elevated as a result of
having to regrade the pond to accommodate more volume? Existing ponds can be
used to accommodate more volume by raising the temporary pool and corresponding
discharge weir (or orifice) if 1.) The SA/DA requirement is met when considering the
resultant new percent imperviousness in its determination, and 2.) The pond does not
have to be regraded to accommodate more volume. If this pond has to be regraded to
accommodate this volume, it will have to meet the most recent wet pond design
requirements. Also, please recheck your SA/DA determination, and note a small
typo on the temporary pool elevation on the outlet structure detail.
b. 1yr24hr pre -development volume: Please clarify iiow 34,578 ftI was determined for
the pre development lyr24hr storm volume. Because the design storm is the greater
of either the difference in the pre and post lyr24hr storm or the volume of the 1.5"
storm, the treatment volume hinges on this calculation.
Wilmington Regional Office
127 Cardinal Drive Extension, Wilmington, North Carolina 28405 One
Phone: [phone] FAX: 910a0-20041 Customer Service:1-877-623-6748 NofthCarohna
Internet www.nawaterquality.org Va&ralli_
An Equal Opportunity 1 Affirmative Action Employer

SW8 050518
July 16, 2009
c. Temporary volume provided: Please clarify how 60,689 ft3 was determined, or show
this value in the volume/area/depth summary. 359,704 fe was permitted in 2005.
This value appeared as the temporary pond volume on the 2005 supplement, and was
carried over into the permit. Perhaps that value was recorded in error since it is so
much larger than the one you have reported, but please address this discrepancy.
d. Permanent pool surface area: 112,322 fe was permitted in 2005. This pond is
reported to have 120,629 fe, which is larger than the original. This is likely the result
of the change in elevation of the permanent pool. However, if this pond has to be
regraded to accommodate this volume, please see 2(a) above.
e. Weir discharge/drawdown time: Your cover letter references a "Drawdown
Calculations" summary. Please direct me to those calculations in your package. I
will forward your engineer some detailed questions (which may already be addressed
n the drawdown calculations summary.)
f. Supplements/forms: If any numbers need to be revised in the calculations, please
also update the associated supplements and forms.
3. Drainage easements: Please provide the widths and swale inverts of the drainage easements.
4. Impervious area:
a. Dimensions: Please provide the dimensions for all buildings and other impervious
area.
b. GeoWeb: Please clarify that the GeoWeb was accounted for as pervious surface. If
it was not, please show its dimensions on the plans and provide a permeable
pavement supplement/O&M agreement.
5. Level spreader: Please note that wooden level spreaders are not allowed. Please provide an
alternate, durable material and also show its length on the plans.
Updating calculations: Please note that a revision to one number may have a domino effect
on other numbers, which may require revision of the applications, calculations, supplements,
plans, details, and associated documentation. Please verify all numbers are correct to ensure
consistency in the application documents. I have made considerable effort to identify areas of
concern, however, because substantial changes are warranted please carefully review your re -
submittal in order to ensure that all of the required items are submitted and correct. Please
also note that any calculations in your re -submittal must be stamped.
Please note that this request for additional information is in response to a preliminary review. The
requested information should be received in this Office prior to August 17, 2009, or the application will
be returned as incomplete. The return of a project will necessitate resubmittal of all required items,
including the application fee.
If you need additional time to submit the information, please mail, email or fax your request for a time
extension to the Division at the address and fax number at the bottom of this letter. The request must
indicate the date by which you expect to submit the required information. The Division is allowed 90 days
from the receipt of a completed application to issue the permit.
The construction of any impervious surfaces, other than a construction entrance under an approved
Sedimentation Erosion Control Plan, is a violation of NCGS 143-215.1 and is subject to enforcement
action pursuant to NCGS 143-215.6A.
Page 2 of 3

SW8 050518
July 16, 2009
Please reference the State assigned project number on all correspondence. Any original documents that
need to be revised have been sent to the engineer or agent. All original documents must be returned or
new originals must be provided. Copies are not acceptable.
If you have any questions concerning this matter please feel free to call me at [phone] or email me
at [e-mail].
Y
nson
Environmental Engineer
GS/KJ: S:\WQS\STORMWATER\ADDINFO\2009\050518MODjuIO9
CC: Ted Burke, PE, Cavanaugh & Associates, P.A.
Stormwater Permitting, WiRO files
Page 3 of 3

Johnson, Kelly
From: Johnson, Kelly
Sent: Thursday, July 16, 2009 3:57 PM
To: '[e-mail]'
Subject: SW8 050518, Surf City Park
Attachments: 050518.jui09.xis; 050518.jul09.pdf
Ted,
I went through this package today. It is a tricky one because it is adding BUA to an existing pond for which we have
limited data on file (because it is mostly in acres rather than square feet). I spent considerable time going through the
file for the old pond, your submittal, and also recreating your calculations. (Although we do not have AutoCAD so this
isn't always a perfect method of figuring things out because data is sometimes hard to pull from AutoCAD printouts. I
summarized what I came up with in the attached Excel file. I inserted notes in cells where I had questions, and color -
coded discrepancies between data sets. I tried to make it easy to follow (and note that I have all of the acre data from
the previous permit still in the spreadsheet, but in hidden rows because it is messy.) The attached letter will be mailed
today. Please call with questions.
Kelly
*** My email has changed to kellv.g.iohnsonConcdennaov
K.ei LgJDhw50w
Kelly Johnson
Environmental Engineer
127 Cardinal Drive Extension
Wilmington, NC 28405-3845
Office: 910.796.7345
Fax: [phone]
E-mail correspondence to and from this address may be subject to the North Carolina Public Records Law and may be
disclosed to third parties.

Surf City Community Park and Recreation Center
SW8 050518 Modification
July 16, 2009 Permit Review
DA1: Increasing total area to pond, adding some BUA DWQ Proposed Proposed Permitted Proposed
DA2: Increasing total area not to pond, adding some BUA July 16,2009 2009 2009 2005 Excess
Review Calcs (2008&1995 (2008&1995 (1995 Rule) (2008 Rule)
Rules) Rules)

CDJUNII &I
June 18, 2009
Ms. Linda Lewis
Environmental Engineer III
NCDENR
Division of Water Quality
127 Cardinal Drive Extension
Wilmington, NC 28405
Re: Application Return
S -its 6e .munity Park
W8 05 55 18 Mod.
Dear Ms. Lewis,
CAVANAU G H
Solutions through integrity and partnership
JUN 1 S 2009
Cavanaugh & Associates, P.A. is in receipt of your letter dated June3, 2009 for the
subject project. On behalf of the Town of Surf City, we appreciate the time you and
your staff invested in reviewing these permitting documents. Please find our
responses to these comments below. For ease of reference, we have included the
comments received in bold, followed by our responses in italics:
1. The existing previously permitted pond parameters are changing
therefore please provide a new signed O&M document. The old
one will no longer apply.
A new O&M document is enclosed.
2. Please provide sealed design calculations for the pond, demonstrating
that the permitted pond can provide the new minimum surface area and
storage volume due to the increased drainage area and built -upon area
without modification, or how the pond is being modified to provide the
new minimums.
Please see enclosed wet detention pond calculations. The calculations
show the SA and Volume requirements for the final built -upon surfaces
(existing and proposed). The only physical modification to the pond will be
updating the outlet structure. The elevations of the permanent and
temporary pools will be modified (to provide at least aft of depth in the
permanent pool plus 1 ff for sediment storage (see comment 6, below for
further information).

Ms. Linda Lewis
Surf City Community Park
SW8 0505 18 Mod.
Pender County
Page 2 of 4
3. The calculations should show all your work, assumptions, equations
used, etc., and must include calculations for the sizing of the new 4"
drawdown orifice and drawdown time. Please note that for wet
detention ponds with % mile of and draining to SA waters, the orifice
must also restrict the outflow rate to no more than the pre -development
flow rate for the 1 year 24 hour storm. Simply listing the results and
providing the Hydraflow printouts is not sufficient. See Chapter 2 of the
BMP Manual.
The drawdown orifice was re -engineered as a rectangular weir notched into
the square concrete riser. The weir length will be 2.25 ft which will result in
a drawdown time for the 1.5-in storm of 2.8 days. Calculations showing the
drawdown times for the new weir are shown on page 1 of the "Drawdown
Design Sheet" 2) u*\A� `S 4AFC61
Depending on interpretation of `predevelopment, the predevelopment flow
rate is either.
15.72 cfs (Q=C*/*A prior to the BMP); or
0.30 cfs (Q=C*/*A when routed through BMP)
Regardless of interpretation, the proposed outlet structure provides a
further reduction of the outflow rate. As the pond is so large, the entire
design storm (in fact, the 100-yr storm) is contained by pond without the
primary outlet (rirn of the riser) contributing outflow. Please reference 1-yr
storm results for Hydrographs, 1, 3, and 7. The peak discharge through the
proposed bleed down weir is 0.23 cfs (when rise = 0.11 ft). The average
discharge (as used to calculate drawdown) is 0.075 cfs. Please see
aforementioned drawdown calculations.
Please note the difference in rise elevations are due to the 0.15 ft
calculation being derived strictly from a static pond volume, and the 0.11ft
calculation being determined by a dynamic routing evaluation.
4. Page 2 of the application form should have a completed column
demonstrating overall low density of less than 25j% for the entire
project, as discussed at the meeting with Kelly.
Page 2 of the application has been updated to show the overall low density
for the total project.

Ms. Linda Lewis
Surf City Community Park
SW8 0505 18 Mod.
Pender County
Page 3 of 4
5. The 1 year 24 hour precipitation depth in the Surf City area is going to
be about 3.7-3.8 inches, per the NOAA website. Please recalculate the
pre/post development runoff volumes using this number or provide
current documentation supporting the use of 3.2 inches.
The precipitation depth was changed to 3. 7543.8 inches, per the NOAA
data. Please see the attached NOAA tables for reference.
6. For a 3 foot deep pond, no sediment accumulation is allowed. The new
signed O&M for the wet pond will need to reflect this. The rules do not
allow the pond depth to be less than 3 feet at any time. To create a
sediment accumulation area, the pond will need to be excavated another
foot, or the permanent pool elevation raised by one foot.
The permanent pool elevation was raised by one foot to provide one foot of
sediment storage. A new O&M has been signed and is enclosed.
7. FYI — The proposed GeoWeb system cannot be credited as partially
impervious unless you provide a completed Permeable Pavement
supplement form and signed O&M. I could not tell from any of the
calculations if a BUA credit was being claimed or not.
The GeoWeb is not counted as pervious pavement and thus is not factored
into the BUA calculations. The GeoWeb is not intended to be a driving
surface. Proposed grading of the embankment does not provide for
compaction to the same standards as a roadbed. Rather, compaction will
only be provided to the extent required for slope stability. The Geoweb is a
perranent erosion control measure designed to prevent lawn mowers from
creating rutting along the slope embankment.
8. Please provide new layout and grading plans for the Community Center
Building parking lot and tennis courts since they do not appear to have
been constructed per the 2005 approved plans and no plan revisions
were approved after the original permit was issued. I also noticed that
the amount of existing BUA claimed on the application is 1,839 square
feet more than what was approved.
Neither Owner nor Engineer are able to locate any as -built drawings of the
2005 approved plans the Community Center Building and parking lot.
However the existing conditions shown in this submittal reflect as -built
conditions.
Although we are unable to determine what constitutes a change from the
2005 submittal, the purpose of the stormwater management system
contained within this application provides for the treatment and
management of all runoff from existing and proposed runoff.

Ms. Linda Lewis
Surf City Community Park
SW8 0505 18 Mod.
Pender County
Page 4 of 4
9. All modifications to previously permitted projects require that a partial
Designer's Certification be submitted, indicating that the 13MP itself has
been constructed per the previous permit. Upon the completion of
construction for the new project, a full Certification is required which
will include the l9UA, and drainage area. Since the existing community
building, parking lot and tennis court were not built per the permit, you
will not be able to certify them along with the pond until after this
modification is constructed.
Per our conversation, I have prepared a partial certification for the
previously permitted project. As l was not present during construction, 1
am limiting my partial certification, per our conversation on June 8, 2009, to
the surface area of the pond and the elevations of the outlet structures
based upon surveys provided by David Alley, PLS and Charles Riggs PLS.
Upon completion of the project, a full certification will be issued for this
project.
Please do not hesitate to contact our office should you have any questions,
comments, or require additional information.
Thank you.
CAVANAUGH & ASSOCIATES, P.A.
Edw rd 'Ted' R. Burke, P.E.
910-619-1256
910-392-4612 (fax)
cc: J. Michael Moore, Town Manager
Town of Surf City

SURF CITY COMM UNm ' PARK
'OWN OF SURF Clip,
PENDER COUNTY,
NORTH CAROLINA
REVISED STORMWATER MANAGEMENT
HIGH DENSITY PERMIT APPLICATION
SUPPLEMENTAL REPORT
June 18, 2009
�4
Sduwas through integrity and partnership
i
4j
.IUN 1 19
We provide superior client service and environmentally sound
designs through integrity, communication, and partnership.
Consulting Engineers
Environmental Professionals
Land Surveyors
Design Professionals
W. N. Frorit 6*06% i"suite 2W, WIrningion,'Nodh Q uohna 294014 Pharta 81,Q09 -44M Fox 9101392 9612

TABLE OF CONTENTS
I. SITE DESCRIPTION
II. PROJECT DESCRIPTION
III. STORMWATER MANAGEMENT PLAN
IV. EROSION AND SEDIMENTATION
CONTROL (ESC) STRATEGY
V. CONSTRUCTION SCHEDULE
VI. VEGETATION PLAN
APPENDIX
P; Site Location, Map
PAGE
2
2
3
5
7
8
B- Watershed Classification
C- Existing Stormwater Management Permit
D- Summary of Permit Modification Meeting
E- Stormwater Permit Criteria Compliance Evaluation
F- Drainage Area Delineation Maps
i G- Drainage Area Design Sheets
i H- Pre & Post Development Conditions Hydrographs and
Summaries
I- NOAA Rainfall Data
Surf City Community Park 1 of 8
Stormwater Management High Density Permit Application

Surf City Community Park
Narrative for Stormwater Permit
Site Description
The subject project, formally identified as the Surf City Community Park, is
located in the Town of Surf City, Pender County, North Carolina. The
approximately 23 acre property has frontage along J.H. Batts Road and
Community Center Drive. Please reference the attached site location map
located in Appendix A of this report.
The property is currently used as the Surf City Community Center. There are no
404 jurisdictional wetlands located on the property as confirmed by an
environmental consultant and verified by the United States Army Corps of
Engineers (USACE) on November 11, 2004.
Stormwater from impervious areas on the site is currently treated with an existing
wet detention basin. The wet detention basin has an approximate surface area
of 2 acres. A forebay is used to pre -treat runoff entering the basin. The basin
has a 3-ft permanent pool and discharges the storm event into an existing
drainage ditch along the western boundary of the property. This drainage ditch
ultimately discharges to Becky's Creek and Topsail Sound. The maximum pool
level of the pond is approximately six (6) feet and is capable of detaining
approximately 359,704 cubic feet of stormwater runoff. Becky's Creek and
Topsail Sound have a watershed classification of SA:HQW. Please see the
watershed classification for the site in Appendix B of this report.
The property can be described as mildly sloping, with an average slope of
approximately 2.0-5.0%. The capped solid waste dump is approximately 6.5
acres and is located in the center of the property. The capped dump is an
elevated area on the property that simulates a plateau. The dump has side
slopes approaching 3:1. The top of the landfill is relatively flat and is
approximately 12 to 15-ft higher than the surrounding property. The elevations
throughout the property range from 19 ft mean sea level (MSL) near the frontage
of the property on Community Center Drive to 42 ft MSL at the top of the capped
landfill.
Project Description
The purpose of the proposed land disturbing activity is to convert the open area
of the capped landfill into a recreation park with ball fields and a sidewalk, to
construct a parking lot and a concession stand/bathroom building to the north of
Surf City Community Park 2 of 8
Stormwater Management High Density Permit Application

L
the landfill, and to construct a parking lot to the south of the landfill area. This
redevelopment will add approximately 68,000 ft2 of impervious surface to the
site. The site is divided into two primary drainage areas.
Stormwater Manaaement Plan
At a meeting between Cavanaugh & Associates and Kelly Johnson of North
Carolina Department of Environment and Natural Resources (NCDENR) on
December 15, 2008, it was determined that this project will be modification of the
existing stormwater management permit (# SW8 050518). The existing
stormwater management permit is attached as Appendix C.
Per the referenced meeting, it was established that the modification of the
existing permit must meet the following criteria:
L Whole project: Must be <25% (pre-2008 Coastal Rules, SA water)
ii. New area of project: Must be <12% BUA (2008 Coastal Rules,
SA water). (Note: Area previously counted as draining to the pond
will be excluded.)
iii. Pond: All area that will go to the pond in the new proposal,
including the proposed parking lot nearest the pond. (This is the
larger lot.)
iv. Non -Pond: All "new" area that is counted in the proposal towards
the <12% BUA. (Note: The green area in the previously -
permitted section will not be counted towards the 12% because it is
already counted as draining to the pond).
Please see Appendix D for Ms. Johnson's summary of meeting and permit
modification conditions.
Appendix E demonstrates this project's compliance with the above criteria.
This project is comprised of Drainage Area 1 (DA 1) and Drainage Area 2 (DA 2).
Please see Appendix F for the Drainage Area Delineation Maps. DA 1 contains
all of the existing impervious area and wholly contains the previously permitted
areas. DA 1 utilizes a wet detention basin, per the original permit, to manage the
runoff. Drainage Area 2 is currently undeveloped. The two drainage areas are
divided by a general crown in the capped landfill.
Per the referenced permit modification meeting, it was agreed that the runoff
from DA 1 would continue to be managed by the existing wet detention pond.
The existing pond is significantly oversized and thus easily manages the
additional runoff from this project. It should be noted that the existing outlet
structure is currently in a state of failure and thus will be replaced as part of this
project. The existing structure is comprised of three culverts. The proposed
structure will be a riser barrel structure. The bleed down weir in the proposed
Surf City Community Park 3 of 8
Stormwater Management High Density Permit Application

!i
L
structure will be set at 26.0 MSL in order to provide sediment storage and
maintain a minimum 3.0-ft depth of the permanent pool. The proposed primary
outlet (riser grate elevation) will be set to 26.5 MSL. At this elevation, the pond is
sufficiently large that the 100-yr storm only accounts for a 0.11-ft rise and does
not result in discharge from the primary outlet.
The stormwater runoff from DA 2 will be treated by natural vegetated filters,
sheet flow, and vegetated conveyances. Runoff from the proposed parking lot in
the area will be collected in a swale and directed to a level spreader that will
discharge to a constructed vegetated conveyance system.
Stormwater from the tributary drainage areas, as identified in the submission
documents, will travel by sheet and shallow concentrated flow to a series of
vegetated swales and/or vegetated filter strips for eventual discharge to one (1)
existing stormwater pond (high density Drainage area 1) or off -site (low density
Drainage area 2).
Post -Redevelopment Totals:
Drainage Area DA Size
Impervious
% Impervious
High or Low
Surface Area
Density
1 486,266 ft2
135,163 ft2
27.8 %
High
2 477,468 ft2
29.143 ft2
6.1 %
Low
Totals 963,734 ft2
164,306 ft2
17.05 %
High
Collection and Conveyance
DA 1 - The drainage area and associated roads will be graded in a manner that
runoff enters the stormwater management system by way of sheet flow over the
grassed areas and shallow concentrated flow within vegetated swales. Runoff
generated on the elevated capped landfill will be delivered to the vegetated
swales via slope drains and a wide swale with heavy, permanent reinforced
matting.
DA 2 — The conveyance of runoff from this drainage area will, for the most part,
continue to follow existing drainage patterns. The runoff generated from the
proposed parking lot will be collected in a swale and delivered to a level
spreader which will discharge to a constructed vegetated filter strip.
Treatment
The project site is located in a coastal county and is within '/2 mile of SA waters.
Therefore, engineered stormwater management controls will be utilized for the
high density portion of the site. Specifically, one (1) existing stormwater wet
pond will be utilized to handle all of the stormwater runoff from the high density
Surf City Community Park 4 of 8
Stormwater Management High Density Permit Application
L

redevelopment area. The stormwater runoff coming from the low density area
will be treated by a level spreader and a vegetated filter strip. Please see
Appendix G for the Drainage Area Design Sheets.
Using the computer program Hydraflow, the runoff potentially generated for the
site in its existing state (pre -development) during a 10-year storm was modeled
and equals approximately 12.83 ft3ls. The runoff generated in the post -
redevelopment scenario for the site was also modeled for a 10-year storm and
eq-uals approximately 17.27 W/s. !Vote that the post -redevelopment runoff rate
for the high density DA 1 is less than the pre -development runoff rate for DA 1.
The modeling results are shown in Appendix H.
The proposed stormwater management system has been designed in
accordance with NCDENR requirements and should not adversely affect any
downstream drainage patterns.
Erosion and Sedimentation Control (ESCI Stratew
An ESC permit was recently submitted to the Land Quality Section for this
project
In order to prevent erosion on the project site and sediment transport from the
project site, several measures will be used to ensure soil stability and
containment. First, the site will employ a construction entrance ensuring that
any large construction equipment leaving the project site will be appropriately
cleaned of sediment and excess soil before leaving the site. In addition, the site
will employ sediment fencing to ensure that if any erosion shall occur on the
fringes of the site boundary, no sediment transport away from the site will occur.
Controlled sediment outlets will be added at natural points of low elevation along
the sediment fencing to ensure that runoff that leaves the site will do so in a
properly controlled manner.
The project will use a temporary vegetative cover and matting where necessary
to prevent erosion from any slopes on the project site during land disturbing
activities. All seeded areas will be fertilized, reseeded as necessary, and
mulched according to specifications in the vegetative plan to maintain a
vigorous, dense vegetative cover. Excelsior matting and seeding will be used
on slopes steeper than 2:1.
Planned Erosion and Sedimentation Control Practices
1. Construction Sequence — Practice 6.01
The construction sequence for this project is particularly crucial to
mitigating off -site transfer of sediment. The project, as described, will
Surf City Community Park $ of 8
Stormwater Management High Density Permit Application

utilize temporary diversions and sediment fence to mitigate the
disturbance of land from an erosion control standpoint.
2. Land Grading - Practice 6.02
Approximately 4.5 acres of grading will be required for the excavation of
the pond and soil stockpiles. All fill and cut slopes will be a maximum of
3:1.
3. Temporary Gravel Construction Entrance/Exit - Practice 6.06
Two (2) graveled areas will be put down to provide a buffer area where
vehicles can drop their mud and sediment to avoid transporting it onto
pubic roads, to control erosion from surface runoff, and to help control
dust.
4. Temporary & Permanent Seeding Schedule -Practice 6.10 & 6.11
Temporary vegetative cover will be implemented through seeding after
every land disturbing activity is completed. Vegetative cover must be
established within 15 days of land disturbing activity. Permanent cover
must be established prior to completion of the project.
5. Slope Drains - Practice 6.32
Nine (9) - 18-inch slope drains will be installed at strategic intervals along
the capped landfill side slopes to protect against scouring flows and
sediment transport.
6. Sediment Fencing - Practice 6.62
Sediment fencing will be constructed around the periphery of the spoil
sites, and at various critical locations around the project area to prevent
untreated runoff from exiting the site or entering the existing ditches.
Please refer to plan set.
7. Controlled Sediment Fence Outlet
Controlled sediment fence outlets are going to be used in this project to
further treat runoff before it exits project areas that are managed by
sediment fence. Outlets will be spaced at a maximum of 200 foot
intervals and at strategic low points. Please reference detail on attached
plan set. Please refer to plan set.
' 8. Soil Stockpile Area
L A soil stockpile area will be utilized to allow excavated soil to dry before
transport. The soil stockpile will be surrounded with sediment fence and
will maintain slopes as shown in detail on the attached Dian set.
Surf City Community Park 6 of 8
Stormwater Management High Density Permit Application

Maintenance Plan
1. All erosion and sediment control practices will be checked for integrity
following every runoff producing rainfall event, or at a minimum, once a
week. Any repairs will be made immediately to maintain the function of
the design measures.
2. Sediment will be removed from the sediment fence when it becomes
about a half of a foot deep at the fence base. The sediment fence will be
repaired as necessary to maintain function as a barrier.
3. The sediment fencing area and collected sediments will be removed
and brought to grade after the contributing area has been properly
stabilized.
4. All seeded areas will be fertilized, reseeded as necessary, and mulched
according to specifications in the vegetative plan to maintain a vigorous,
dense vegetative cover.
5. Contractor to sweep the roadway adjacent to the project site and keep it
clean from sediment as necessary.
Construction Schedule
1. Perform construction stake -out.
2. Install temporary gravel construction entrance.
3. Clear site, but do not grub.
4. Install all erosion and sediment control measures.
5. Grub site.
6. Install pump station.
7. Install utilities.
8. Perform site grading.
9. Install stormwater devices.
10. Construct concession building.
11. Install hardened surfaces.
12. Scarify, seed, fertilize, mat, and mulch all disturbed areas.
13. Install athletic equipment.
14. After disturbed areas are stabilized with vegetation, the contractor
shall return to the site and remove all temporary erosion control
measures.
Surf City Community Park 7 of 8
Stormwater Management High Density Permit Application
L

Venetation Plan
1. The contractor shall provide seeding and mulching on all disturbed
areas within 15 working days following the compietion of any phase of
grading.
2. Seeding requirements shall include soil preparation, seed mixtures, and
mulching.
Surf City Community Park 8 of 8
Stormwater Management High Density Permit Application

APPENDIX
A- Site Location Map
B- Watershed Classification
C- Existing Stormwater Management Permit
D- Summary of Permit Modification Meeting
E- Stormwater Permit Criteria Compliance Evaluation
F- Drainage Area Delineation Maps
G- Drainage Area Design Sheets
H- Pre & Post Development Conditions Hydrographs and
Summaries
Surf City Community Park
Stormwater Management High Density Permit Application

Appendix A
Site Location Map
Surf City Community Park
Stormwater Management High Density Permit Application

VICINITY MAPS
NOT TO SCALE

Appendix B
Watershed Classification
LSurf City Community Park
Stormwater Management High Density Permit Application

SURF CITY
COMMUNITY PARK
PENDER COUNTY
NORTH CAROLINA
. •S1F� �itiu7` C.
A v"�.2�s 1`
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APPROX. PROJECT
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PROJECT INFORMATION
SURF CITY COMMUNITY PARK
LATITUDE: 340 26' 23.35"N
LONGITUDE: 770 33' 52.63" W
QUAD: HOLLY RIDGE
RECEIVING
STREAM
STREAM
STREAM
CLASS
BASIN
INDEX
1
INTRACOASTAL
WATERWAY
SA; HQW
CAPE FEAR
18-87-(5.5)
SITE PREVIOUSLY PERMITTED UNDER PERMIT# SW8050518
CAVANAU G H
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LOCATION
NOT TO SCALE

Permit No.
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quallty
WATER QUALITY CLASSIFICATION? Alay hied REQuse as an UEST FORM
This
1, PROJECT INFORMATION
In order to determine the receiving stream for a project inc a aanon coal county stal county, or whether the ate
a
Stormwater Management Permit will be required for project sheet
classification of the closest downslope surface must
besditetermined. Please complee surface waters that te Sections lI and 11
overflow from the project would flow toward) must b
below. DQW Staff will determine the receiving stream classification, complete Section III, and return
the completed form to you.
1. project Name: SurF City Corr2munity Park County: Pender
2.. Contact Person: Everett Gupton
3. Mailing Address: 130 North Front Street Suite 202
4. City Wilmington State NC Zip 28401 Phone No. 810-392-4462
5. Name of closest downslope surface waters: Intracoastal Waterway O
Date:
Signature of contact person: ItU
6. g
7.
Is a Sedimentation Erosion Control Plan or a CAMA Major Permit required? ®YES ONO
II. REQUIRED ITEMS
of the a ro riate portion of a USGS quad sheet showing the projects
An 8.b`' x 1 `i" copy pp p
or roads or State Roads numbers, and nearest
properly boundaries, receiving stream, maj
town or city must be attached.
III, CLASSIFICATION REQUEST (To be completed by Regional Office personnel)
1. gee I C
Name of surface waters:.
N► /rrevers e/ �!izi rcvci�� � IC
2. River Basin: ��ar —
Index No.
3. Classification (as established by the EMC): A
4. Proposed Classification, if applicable:
6, State Stormwater Management Permit required? YES [1N0
Date ` -f
6. Signature of Regional office personnel:
cc: DWQ -Regional Office
I Consultant
Building Inspector
Central Files
Form SWU-111 'Version 10.99

Class
Description Class Date
SA;ORW 01/01/90 18-87-0.5
SA;ORW O1/01/90 18-87-1
Waterway
SA;ORW O1/01/90 18-87-2
SA;ORW O1/01/90 18-87-3
SC; Sw,HQW 08/01/90 18-87-4
SA;HQW
08/09/81
18-87-5
Waterway
~ Intracoastal Waterway
From Morris Landing to the
SA;HQW
08/09/81
18-87-(5.5) ■
~
eastern mouth of Old
■
■
Topsail Creek
■
■ ■ ! ! # # ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■
■ ■ # ! ! ! ! # ! ■ ■ ■ ■ ■ ■ ■ ■ ■
■ ■ ! # ! ■
! ! ■ ■ ■ ■ ■ 0 ■ # ■ ■
■ ■'i# # ■ ■ # ■ ■ 7
SA;HQW
08/09/81
18-87-6
Creek)
Waterway
SA;HQW
08/09/81
18-87-6-1
I
Creek
SA;HQW
08/09/81
18-87-6-2
Creek
ISA;HQW
08/09/81
18-87-7
f
Waterway
SA;HQW
08/09/81
18-87-8
Waterway
61

Appendix C
Existing Stormwater
Management Permit
Sure` City Community Park
Stormwater Management High Density Permit Application

OF W�AT! �Q Michael F. Easley, Governor
�O G William G. Ross, Jr., Secretary
—co r North Carolina Department of Environment and Natural Resources
3 y
p �rw•�rir Alan W. Klimek, P.E. Director
Division of Water Quality
Septer n ber 13, 2005
Mr. J. Michael Moore, Town Manager
Town of Surf City
214 N. New River Drive
Surf City, NC 28445
Subject: Stormwater Permit No. SW8 050518
Surf City Community Park and Recreation Center
High Density Project
Pender County
Dear Mr. Moore:
The Wilmington Regional Office received a complete Stormwater Management Permit
Application for Surf City Community Park and Recreation Center on September 9, 2005. Staff
review of the plans and specifications has determined that the project, as proposed, will
comply with the Stormwater Regulations set forth in Title 15A NCAC 2H.1000. We are
forwarding Permit No. SW8.050518 dated September 13, 2005, for the construction of the
subject project:
This permit shall be effective from the date of issuance until September 13, 2015,-arid 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,
co�iforming 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
contagt Paul Bartlett, or me at [phone].
Sincerely,
Edward Beck
Regional Supervisor
Surface Water Protection Section
ENB/ptb: S:IWQSISTORMWATERIPERMiT1050518.sept05
cc: Susan Haber Sayger, P.E., EDA, P.A.
Ren Holt, Pender Co- lnty Building Inspections
Paul T. Bartlett, P.E.
Wilmington Regional Office
Central Files
North Carolina Division of Water Quality 127 Cardinal Drive Extension Phone [phone] Customer Service1-877-623-6748 one
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Stake Stormwater Management Systems
Permit No. SW8 050518
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
J. Michael Moore and the Town of Surf City
Surf City Community Park and Recreation Center
Pender County
FOR THE
construction, operation and maintenance of a wet detention pond in compliance with
the provisions of 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 September 13, 2015, 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 1.6 on page 3 of this permit. The stormwater
control has been designed to handle the runoff from 94,090 square feet of
impervious area in a drainage area of 3.25 acres (the "High Density Tract"). The
remaining project area of 19.75 acres (the "Low Density Tract") must be
maintained at 25% built -upon area, as required by Section .1005 of the
stormwater rules.
3. The High Density Tract will be limited to the amount of built -upon area indicated
on page 3 of this permit, and per approved plans. There is no allotment for future
built -upon area.
4. All stormwater collection and treatment systems must be located in either
j 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.
L 5. The runoff from all built -upon area within the permitted High Density Tract of this
project must be directed into the permitted stormwater control system.
Page 2 of 8
I_

State Stormwater Management Systems
Permit No. SW8 050518
6. The following design criteria have been provided in the wet detention pond and
must be maintained at design conditions:
a.
Drainage Area, acres:
3.25
Onsite, ft :
141,570
Offsite, e:
None
b.
Total Impervious Surfaces, ft2:
94,090
C.
Design Stonm, inches:
1,5
d.
Pond Depth, feet:
3
e.
TSS removal efficiency:
85%
f.
Permanent Pool Elevation, FMSL:
25
g.
Permanent Pool Surface Area, ft2:
112,322
h.
Permitted Storage Volume, ft3:
359,704
1.
Temporary Storage Elevation, FMSL:
28
j.
Controlling Orifice:
(2) 24 and (1) 36" 0 pipe
k. Permitted Forebay Volume, ft3: NIA
1. Receiving Stream/River Basin: Becky's Creek / Cape Fear
M. Stream Index Number: 18-87-8
n. Classification of Water Body: "SA:;HQW"
7. Approved plans and specifications for projects covered by this permit are
incorporated by reference and are enforceable parts of the permit.
8. The only runoff conveyance systems allowed within the Low Density Tract will be
vegetated conveyances such as swales with minimum side slopes -of 3:1 (H:V)
as defined In the stormwater rules and approved by the Division.
9. No piping is allowed in the Low Derisity'Vact except that minimum amount
necessary to direct runoff beneath an impervious surface such as a road or to
provide access.
10. Unless specified elsewhere, permanent seeding requirements for the swales
must follow the guidelines established in the North Carolina Erosion and
Sediment Control Planning and Design Manual.
11. Roof drains in the Low Density Tract must terminate at least 30' from the Mean
High Water line. Roof drains in the High Density Tract must be directed or
connected to the stormwater management system.
11. SCHEDULE OF COMPLIANCE
The stormwater management system shall be constructed in its entirety,
vegetated and operational for its intended use prior to the construction of any
built -upon surface. Projects in the Low Density Tract covered by this permit will
maintain a minimum 30 foot wide vegetative buffer between all impervious areas
and surface waters.
Page 3 of 8

State Stormwater Management Systems
Permit No. SW8 050518
2. During construction, erosion shall be kept to a minimum and any eroded areas of
the system will be repaired immediately.
3. The permittee shall at all times provide the operation and maintenance
necessary to assure the permitted stormwater system functions at optimum
efficiency. The approved Operation and Maintenance Plan must be followed in
its entirety and maintenance must occur at the scheduled intervals including, but
not limited to:
a. Semiannual scheduled inspections (every 6 months).
b. Sediment removal.
C. Mowing and revegetation of slopes and the vegetated filter.
d. Immediate repair of eroded areas.
e. Maintenance of all slopes in accordance with approved plans and
specifications.
f. Debris removal and unclogging of outlet structure, orifice device, flow
spreader, catch basins and piping.
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.
5. Decorative spray fountains will be allowed in the stormwater treatment system,
subject to the following criteria:
a. The fountain must draw its water from less than 2' below the permanent
pool surface.
a. Separated units, where the nozzle, pump and intake are connected by
..tubing, may be used only if they draw water from the surface in the
deepest part of the pond.
b. The falling water from the fountain must be centered in the pond, away
from the shoreline.
C. .The maximum horsepower for a fountain in this pond is 314 horsepower.
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, priar,to isfiiance"of a Certificate of Occupancy,
and prior to operation of this permitted facility, a certification must be received
from an appropriate designer for the system installed certifying that the permitted
facility has been installed In accordance with this permit, the approved plans and
specifications, and other supporting documentation. Any deviations from the
approved plans and specifications must be noted on the Certification. A
modification may be required for those deviations.
8. If the stormwater system was used as an Erosion Control device, it must be
restored to design condition prior to operation as a stormwater treatment device,
and prior to occupancy of the facility.
9. Access to the stormwater facilities shall be maintained via appropriate
easements at all times.
Page 4 of 8

State Stormwater Management Systems
Permit No. SW8 050518
10. The permittee shall submit to the Director and shall have received approval for
revised plans, specifications, and calculations prior to construction, for any
modification to the approved plans, including, but not limited to, those listed
below:
a. Any revision to any item shown on the approved plans, including the
stormwater management measures, built -upon area, details, etc.
b. Project name change.
C. Transfer of ownership.
d. Redesign or addition to the approved amount of built -upon area or to the
drainage area.
e, Further subdivision, acquisition, lease or sale of all or part of the project
area. The project area is defined as all property owned by the permittee,
for which Sedimentation and Erosion Control Plan approval or a CAMA
Major permit was sought.
f. Filling in, altering, or piping of any vegetative conveyance shown on the
approved plan.
11. The permittee shall submit final site layout and grading plans for any permitted
future areas shown on the approved plans, prior to construction.
12. A copy of the approved plans and specifications shall be maintained on file by
the Permittee for a minimum of ten years from the date of the completion of
construction.
13. The Director may notify the permittee when the permitted site does not meet one
or more of the minimum requirements of the permit. Within the time frame
specified in the notice, the permittee shall submit a written time schedule to the
Director for modifying the site to meet minimum requirements. The permittee
shall provide copies of revised plans and certification in writing to the -Director
that the changes have been made.
14. Swales and other vegetated conveyances shall be constructed in their entirety,
vegetated, and be operational for their intended use prior to the construction of
any built -upon surface.
15. The permittee shall at all times provide the operation and maintenance
necessary in the Low Density Tract to operate the permitted stormwater
management systems at optimum efficiency to include:
a% Inspections `•� t;;..��
b Sediment removal.
G. Mowing, and revegetating of the side slopes.
d. Immediate repair of eroded areas.
e. Maintenance of side slopes in accordance with approved plans and
specifications.
16. The permittee shall submit all information requested by the Director or his
representative within the time frame specified in the written information request.
Page 5 of 8

State Stormwater Management Systems
Permit No. SW8 050518
111, GEINERAL CONDITIONS
1. This permit is not transferable except after notice to and approval by the Director.
In the event of a change of ownership, or a name change, the permittee must
submit a formal permit transfer request to the Division of Water Quality,
accompanied by a completed narnelownership change form, 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 ur?til such time as the Division approves the transfer request.
2. Failure to abide by the conditions and limitations contained in this permit may
subject the Permittee to enforcement action by the Division of Water Quality, in
accordance with North Carolina General Statute 143-215.6A to 143-215.6C.
3. The issuance of this permit does not preclude the Permittee from complying with
any and all statutes, rules, regulations, or ordinances, which may be imposed by
other government agencies (local, state, and federal) having jurisdiction.
4. In the event that the facilities fail to perform satisfactorily, including the creation
of nuisance conditions, the Permittee shall take immediate corrective action,
including those as may be required by this Division, such as the construction of
additional or replacement stormwater management systems.
5. The permittee grants DENR Staff permission to enter the property during normal
business hours for the purpose of inspecting all components of the permitted
stormwater management facility.
6. The permit may -be modified, revoked and reissued or terminated for cause. The
filing. -of a request for a permit modification, revocation and reissuance or
termination does not stay any permit condition.
7. Unless specified elsewhere, permanent seeding requirements for the stormwater
control must follow the guidelines established in the North Carolina Erosion and
Sediment Control Planning and Design Manual.
8. Approved plans and specifications for this project are incorporated by reference
and are enforceable parts of the permit.
9. The permittee shall notify the Division any name, ownership or mailing address
changes within 30 days.
Permit issued this the 13 day of September 2005.
NORTI AROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
for A an lime , P.E., Director
Division of Water Quality
By Authority of the Environmental Management Commission
i
Page 6 of 8
L:

State Stormwater Management Systems
Permit No. SW8 050518
Surf C ity Community Park and Recreation Center
Stormwater Permit No. SW8 050518
Pender 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 7 of 8

State Stormwater Management Systems
Permit No. SW8 050518
a
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.
6. 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'RegionalOffice
Ren Holt, Pender County Building Inspections
Page 8 of 8

... �.�,..:�...r 'hay .:.............
77
Date Received
Pee Paid
Permit plumber
c-hhrl) State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
STL ORMWAT ER MANAGEMENT PERMIT APPLICATION FORM
This form may be photocopied for use as an original
I. GENERAL INFORMATION
1. Applicants name (specify the name of the corporation, individual, etc. who owns the project):
Town of Surf City, Town Manager: Mr. J. Michael Moore,
2. Print Owner/Signing Official's name and title (person legally responsible for facility and compliance):
1.4r.. J_.Michael Moore, Town Manager, Town of Surf City
3. Mailing Address for person listed in Item 2 above:
214 N. New River Drive
City: Surf City state: NC Zip: 28445
Telephone Number: 1 _910 ) 328-4131
4. Project Name (subdivision, facility, or establishment name - should be consistent with project name on plans,
specifications, letters, operation and maintenance agreements, etc.):
Surf City Community -Park and Recreation Center
5. Location of Project (street address):
City: Surf City County: Pender
6. Directions to project (from nearest major intersection):
From rornPr of NCSR 1nl8n,aonrnx. 34 deg 26 min 33 4pr. N: 77 deg 33 Min'32 sec.
Proceed in a southwesterly direction on JH Batts Road approx. 0.35 miles to said ..
property locate -tote Nort of Al Batts oa
7. Latitude: 34 deg. 26 ruin. 19 ;_Longitude:-77 deg. 33 min. 53 sec: of project
sec. N of project . W of project
8. Contact person who can answer questions about the project:
Name: Sue Sayger - EDApa Telephone Number: ( 252 ) 247-2127
II. PERMIT INFORMATION:
i. Specify whether protect is (check one): X X_New Renewal Modification
Lorna SWU-101 Version 3.99 Paget of4

2. If this application is being submitted as the result of a renewal or modification to an existing permit, list the
existing permit number Nnt App_1j.Cab]e and its issue date (if known)
3. Specify the type of project (check one):
.------_Low Density ._ XX-..-High Density Redevelop --General Permit Other
4. Additional Project Requirements (check applicable blanks):
CAMA Major _aS6di'mentation/Erosion Control 404/401 Permit NPDES Stormwater
Information on required state permits. can be obtained by contacting the Customer Service Center at
1-877-623-6748.
Ill, PROJECT INFORMATION
1. - In the space, provided below, summarize how stormwater will be treated. Also attach a detailed narrative
.(grke! xQ -two pages) describing stormwater management for the project.
This p_roiect consists of a slab on grade metal bui Lchng to be used for recreational purposes forthe Town —of — Surf —City.
Pendgr_QQu=, A Natural System Report was perLormedbLEcoScienqe in September 2004. Per _the _r_W_0rtthe
pro Y, the Wil atm-DiLIT-int,
ject includes no greanareaghes to the Class SA of To Sound. Additionally.
USACE has determined there are no iurisdictional wetlands on the
(continued on back
2. ­9(66iiwaier runoff
1,6i6 this project drains_- to the It Y_ac-ea-sj —Wa-t"wu River basin.
3. Total Project Area: 23 acres —acres 4. Project Built Upon Area: 9A % 96
5. How many draffiage area's does the project have? I
6. Complete the follbW!ng 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 beld . w.
t
p
V
Receiving Stream Name
On -site Pand
Overland flow and Becky's
Receiving Stream Class
N/A
N/8 and SA
Drainage Area
IZ5' acres
& -Zt; Lt c e-
Existing Impervious* Area
,p,r9p.Qspd Impervious*Area
--21.6.a
res
NO
% Impervious* Area (total)
g-L &6
n
�gr r
On -site Buildings
.39 acres
On -site Streets
-.2-L-acr-es
On -site Parking
.55 acres
On -site Sidewalks
.14 acres
Other on -site
.33 acres
Off -site
0
Total:
Total:
NIA
lmjpervious area is defined as the built upon area Including, but not 11mited to, buildings, roads, parking areas,
sidewalks, gravel areas, etc.
Form SVVU-101 Version 3.99
Page 2 of 4
Creek

(continued)
Rr-op-erly, Action ID 200500145. A section of the site where no develo meat is proposed) is closed and
caned, solid waste ermit Number 7101 landfill The erosion and sediment control plan submitted to
DNER under separate cover is ex licit in detail to flag and honor disturbance limits regarding the landfill.
Gurrentl the 23-acre site is heavily wo ded and includes a gknd. @Mroxipately 250 feet by 450 feet Of
the 23 acres, the proposed prof ect includes 6.9 acres of disturbed area and 2-1 6 ac of built upon and there
are NO I3 C TE stormwater collection s sigma we will treat the stormwater with th 6 OpMens
option, The desio hono s the r inal drainage divides and stormwater, which will be treated with
vegetated conveyance, includin overland existing channels and two large 100 and 200 vegetated
buffers,Qed wlf
Q 6 � r

7. How was the off -site impervious area listed above derived? From Electronic draWi ng file (AutoCAD )
IV. DEED RESTRICTIONS AND PROTECTIVE COVENANx'S
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 lot number, size and the allowable built-upnn 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
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 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 permitted 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. SUPIPLEMENT FORMS
The applicable state stormwater management permit supplement forms) listed below must be submitted for each
BMP specified for this project. Contact the Stor•mwater and General Permits Unit at [phone] for the status
and availability of these forms.
Form SWU-102 Wet Detention Basin Supplement V/
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

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.
Please indicate that you have provided the following required information by initialing in the space provided
next to each item.
Initials
• Original and one copy of the Stormwater Management Permit Application Form
• One copy of the applicable Supplement Form(s) for each BMP 5 "2
• Permit application processing fee of $420 (payable to NCDENR) '3 -5 43go
• Detailed narrative description of stormwater treatment/management 5 S
• Two copies of plans and specifications, including: tJ_
- Development/Project name
- Engineer and firm
- Legend '
- North arrow
- Scale
- Revision number & date i
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 flvs section.
Designated agent (individual or firm):
Mailing Address:
City: State: Zip:
Phone: ()Fax: ( )
VIII. APPLICANT'S CERTIFICATION
T. AKtrARQL, &K,aou
I, (print or hjpe name of person listed in General Information, itern 2), 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 inn conformance with the approved plans, that the required deed
restrictions and protective covenants will be recorded, and that the proposed project complies
with the requirements of 15A NCAC 2H .1000.
Signature_ Date:
i7 X
Zl, q 0--r 4
Form SWVersion 3.99

-COY
L
❑,- Dimensioned property/project boundary
❑.- Location map with mined 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 itndividual or firth so that they may provide
information on your behalf, please complete this section.
Designated agent (individual or firm): epA PA ) 5 u a`'"' `>„I G `,-)Z-
Mailhig Address: 3 a 1 C o f-I 1.4 c-a c c a vcI 5 v t r F l L
4 atuo.4ttaton - 11-1
City: State: to. a Zip: Z0,5 S 7
Phone: () Fax: 2' -2 1/4 -7- 2 14-7 i-Y ; 2-5 2 •- 247- 6(a74
VIII. APPLICANT'S CERTIFICATION
.j.MttN4r-� +LKudTttE
I, (print or type name of person listed in General Inforn•Fation, itetrt 2), certify that the isniornnation
huluded on this pernnit application fornn is, to the best of uiy knowledge, correct and that the
project will be constructed in conformance with the approved plans, that the required deed
restrictions and protective covenants will be recorded, and that the proposed project complies
with the requirements of 15A NCAC 2H .1000,
Signattu �_ Date: S = 4--®5—
Forth SWU-I01 Version 3.99
Arr �b .r 4

Permit No. SSW � D 605I R
{to be provided by DWQ)
State of 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 plmtocopied for use as an original
DM Stormwater Management 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.
1. PROJECT INFORMATION
Project Name: _Surf City Cormxnunity Parks & Recreation Center
Contact Person: Sue Sayger, , PE Phone Number: (5 ) 47- _ 1 _7
For projects with multiple basins, specify which basin this worksh.eet applies to:
elevations
Basin Bottom Elevation 22 ft.. (floor of ahe basin)
Permanent Pool Elevation 25 ft. (elevation of the orifice)
Temporary Pool Elevation 28 ft. (elevation of the discharge structure overflow)
areas
Permanent Pool Surface Area
112,322
sq. #
(water surface area at the orifice elevation)
Drainage Area
acx InYj
(o -site and off -site drainage to the basin)
Impervious Area
2.16
ac.
(on -site and off -site drainage to the basin)
volumes
...
Permanent Pool Volume
236,733
cu. fL
(combined volume of main basin and forebay)
Temporary. Pool Volume
359,704
cu. ft.
(volume detained above the permanent pool)
Forebay Volume
0
cu. ft.
(approximately 20% of'total volume)
Other parameters
SAIDAI _ .59 (surface area to drainage area ratio f•om DWQ table)
Diameter of Orifice 2-2e'+ 1-3611in. (2 to 5 day temporary pool draw -down required)
Design Rainfall 4 in.
Design TSS Removal 2 85 % (minimum 85% required)
Fonn SWU-IO2 Rev 3.99 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
900A TSS removal. The NCDENR BMP manual provides design tables for both 85% TSS removal and 90% TSS removal.
II. 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 Form, the agent may initial below. If a requirement has not been met, attach justification.
Applicants Initials
a. The permanent pool depth is between 3 and 6 feet (required minimum of 3 feet).
See Just if! catbi oThe forebay volume is approximately equal to 20% of the basin volume.
�J c. The temporary pool controls runoff from the design storm event.
:I d. The temporary pool draws down in 2 to 5 days.
N/A 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.
T g. The basin side slopes above the permanent pool are no steeper than 3:1.
-P 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.
3. A trash rack or similar device is provided for bo'ih the overflow and orifice.
N/A k. A recorded drainage easement is provided for each basin including access to nearest right-
of-way.
NIA _ L 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.
7� in. A mechanism is specified which will drain the basin for maintenance or an emergency.
III. 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) 6 does 0 does not incorporate a vegetated filter at the outlet.
This system (check one) 0 does i 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:
1. 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 22.5 feet in the main pond, the sediment shall be removed.
When the permanent poddepth reads N/A. feet in the forebay, the sediment shall be removed.
BASIN DIAGRAM
UIl in the blanks)
Pennanent Pool Elevation
Sediment Ren oval El. N/A 75 0
---- -- Sediment Removal Elevation 22.5. 75%
Bottom Ele ation j %------------------------------ ?,------------ -------
Bottom Elevation 25%
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 file vegetated shelf and forebay berm.
6. ?A *dxe'^K-s; -ust 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.
` Dorm SWU-102 Rev 3.99 Page 3 of 4
L

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: J. Mi rhael Moore
Title: Town Manager
Address:_214 N. New River Drive. Surf ri ty, Nr 28445
0-328-4131
Date: ( / b — `t' — O S'
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 12o,-Hj Ca
County of do t o--1 , do hereby certify that e I M a v r
personally appeared before me this day of Ma 2-ooS , and acknowledge the due
execution of the forgoing wet detention basin maintenance requirements. Witness my hand and official seal,
SEAL
My commission expires
Form SWU-102 Rev 3,99 Page of

L
noral Carolina
Architects ❑ 1.jigincers ❑ Planners
ONE ,STOP EXPRESS PERMITTING NARRATIVE
Surf City Community Park and Recreation Center
The proposed project, the Surf City Community Park and Recreation Center, is located on J.H.
Batts Road approximately 1,700 feet to the west of NC 210, in Surf City, Pender County,
North Carolina (see vicinity map, Sheet CS). The proposed project is to be designed,
permitted, and constructed with grant funding for the Town of Surf City. The grant funding is
extremely time sensitive. Specifically, a significant portion of the grant funding must be
expended by October, 2005 or the funding will be forfeited. Due to the project's grant funding
tight time line requirements, we are requesting this project to be reviewed under the NCDENR
Express Permit Review process.
As seen on the attached site site plan, Sheet C-1, this project is located on a 23-acre parcel, in a
remote area of the Town. The project consists of a slab -on grade metal building to be used for
'recreational purposes by the Town of Surf City. In addition, the project includes parking, a
20-foot access road, and utilities -- water, sewer and electric.
Earlier in the planning stages of the project (September 2004), a Natural System Report was
performed by EcoScience. In addition, a planning meeting was held on site. In attendance
were Lillette Granade (USACE), James Gregson (NCDCM), John Crowder (NCDWM), and
Cheryl Marks (NCDWM).
Regarding receiving waters and wetlands, per the report, the project includes no stream
reaches to the Class SA HQW of Topsail Sound. Additionally, the Wilmington Distridt,
USAGE- has determined there are no jurisdictional wetlands on the property, Action ID
200500145(Attached).
Currently, the majority of the site is undeveloped. The remaining portion of the site, where no
development is proposed, is a closed and capped, solid waste landfill, permit Number 7101.
Regarding stormwater, 23-acre site is heavily wooded and includes a pond, approximately 250
feet by 450 feet. Of the 23 acres, the proposed project includes 6.9 acres of disturbed area and
2.16 ac of built -upon area. As 9.4% of the total 23 acres of the site will be built -upon and
there are NO DISCRETE stormwater collection systems, we will treat the stormwater with the
low -density option. The design honors the original drainage divides and stormwater, which
will be treated with, vegetated conveyance, including overland flow, existing channels, and
two laige 100 and 200 vegetated buffers
Regarding the erosion and sediment, an Erosion and Sedimentation control plan will be
submitted. The proposed plan is explicit in detail. All erasion and se-4iment controls are
identified, a sequence of events has been established and limits of disturbance are identified to
be flagged and honored during construction.
RED
UGOSTATIONIICAQM0,1e25 SURF C muc cRATgRlrngtxeerhtglrnrrespuudescel wmltlexpra 4mrWtotvenver.doc LY5_
! l -

' J� `•,a�
pa
rx north Carolina
Architects ❑ Engineers Q Planners
Customer Servicc Center — W;RO
North Carolina Department of Environment and Natural Resources
127 Cardinal Drive Extension
Wilmington, NC 28405
Attn: Cameron Weaver
One Stop Express Permitting Coordinator
RE: Surf City Community Park and Recreation Center
EDA Project # 2004425
Dear Mr. Weaver,
Thank you for your guidance with the North Carolina .Department of Environment and Natural
Resources request for Express Permit Review process. As detailed in the attached narrative, we are
submitting the proposed Surf City Community Park and Recreation Center project for Stolmwater,
Erosion and Sedimentation Control, and Non jurisdictional Wetland (401) express permitting.
The site is fairly straightforward; however, there is a•certain urgency associated with the project. If
you have questions or need any additional information, please feel free to call at the numbers below.
Sinc
1,1'Iaber S a)g er, PE
>;aleigh
tree: uda
Jacksoudla
4140 Parl:lalx Avenue
201 West Find Street
901 Hargett Street
Suite 300
Suite 202
Suite D
Raleigh, NC 27612
Greenville, NC 27858
khoonville, NC 28540
Ph: 919.781.1083
PIS: 252.768.3138
P)z: 910.455.1620
Fax: [phone]
Pax: 262.768.0653
Fax: [phone]
Email: e:lar0 D-&A.cont
Email: eta ((+ ") t,g.com
Email: eclajCQ1I DAPa.agm
momha,d City
301 Commerce Avenue
Suite 102
MorcheaJ City, NC 28557
Ply: 252.247.2127
Fax: [phone]
Email: adarnCeDEDA a1
HCADS1'A770NACADL31004425 SURF CIT I' REC CENTERIrttglneerJnglwrm+pauMtrcelpenxfrlflr�rerrp�n0owmvarsloe

EcoScience Corporation
1101 Haynes Street, Suite 101 cou"
`® Raleigh, North Carolina, 27604 -45
EcoScience 919-928-3433 919-828-5518 (Fax) _ ;;:P.
DATE: October 14, 2004
SUBJECT: Meeting Minutes for the Town of Surf City Proposed Recreational Park Agency Meeting;
PREPARED BY: Corri Faquin
PARTICIPANTS:
Lillette Granade USACE 910-251-4634
James Gregson NCDCM 910-395-3900 jim.gregson®ncmail.net
John Crowder NCDWM 910-395-3900 john.crowdercancmail.net
Cheryl Marks NCDWM 919-733-2801 W.283 [e-mail] -Pke-z4-LIAOf`r'('��
Jerry McCrain EcoScience 919-828-3433 [e-mail]
Corri Faquin EcoScience 919-828-3433 faquin@ecosciencenc,com
An agency meeting was conducted on October 13, 2004 to discuss jurisdictional area issues at the
proposed Town of Surf City recreational area, as well as additional agency considerations. The meeting
provided a forum for input by the various interested parties and entities, The Town of Surf City property
is a former county landfill site, which is currently under consideration as a recreational area for the town.
Major topics of discussion during the meeting are summarized below.
Jurisdictional Area issues
Lillette Granade (USACE) reviewed the jurisdictional area delineation. Lillette removed depressional
wet areas on top of the landfill cap due to the landfill elevation being approximately 12 to 15 feet above
the original ground elevation. These areas formed as the result of poor grading leaving small depressions
which trap/pond water. In addition, the on -site pond and ditches exiting the pond (parallel to the eastern
property boundary) were removed since these were originally dug within upland areas. The two
remaining wetland areas are considered isolated by Lillette since they are not connected to jurisdictional
surfabawaters; Therefore, there are no areas on -site which are under jurisdiction- of .the .U.S.. Army Corps
of Engineers (see attached, updated Figure 3).
CAMA Issues
James Gregson (NCDCM) reviewed the proposed recreational site location and indicated that the site will
not be under jurisdiction of the N.C. Division of Coastal Management due to its distance from tidal
waters. However, Coastal Area Management Act consistency issues may apply.
Waste Management Issues
John Crowder (NCDWM) and Cheryl Marks (NCDWM) reviewed the old landfill site and indicated that
Vhe site is not technically a brownfield site; howcvcr, it will be handled as if it is. The site previously
served as a landfill for Pender County and was permitted as such under permit number 7101 or 7102
(John and Cheryl were unsure which number). The site was recently sold to the Town of Surf City, John

and Cheryl stated that prior to converting the old landfill to a recreational area certain issues must be
investigated further to make certain that the site is safe for reuse. The two main issues are methane and
groundwater; generally methane travels with the groundwater. A site assessment plan must be submitted
to and reviewed by the N.C. Division of Waste Management prior to proceeding with alternative 12sos of
the property. Cheryl Marks will be the contact person for further coordination. Cheryl indicated that
these issues generally do not stop site development.
Isolated Wetland Issues
Consultation with the N.C. Division of Water Quality wiII be necessmy prior to any impacts to isolated
wetlands.
If any meeting participants find this memorandum to be in error, please contact Corri Faquin.

SURF CITY STORMWATER RETENTION POND
CALCULATIONS
EDA PROJECT NUMBER 2004425
EDA PROJECT NUMBER 2004425, is the Surf City Community Park and Recreation
Center located in the Town of Surf City, North Carolina. The 23-acre site is heavily
wooded and includes a large, existing wet pond, with a permanent pool surface area of
over 2.6 acres, three feet of permanent pool depth, a length -to -width ratio to 2.5:1 and a
10-foot vegetated perimeter shelf. In keeping with the NCDENR Stormwater
regulations, we are using the large pond to treat the storm run-off from the project. These
calculations include a full routing of the existing pond, accounting for the new
imperviousness surfaces. Per the routing, due to the large amount of volume in the
existing pond, additional runoff from the new imperviousness has little effect on existing
conditions. The 25 year event is completely contained within the existing pond.
EDA PA NORTH CAROLINA
301 Commerce Ave., Suite 102
Morehead City, NC 28557
252-247-2127
?J CFUV1r_,D
S E P, 0 9 z005
1
E
`
L

SMADA 6.0 for Windows
Watershed Information
Watershed Total Area (acres) :3.26
CmperviouS Area (acres) :2.16
rime of Concentration (min) :10.0
f Impervious Directly Connected :50.00
Additional Abstraction
river Pervious Area (inches) :1.00
)ver Impervious Area (inches) :0.00
infiltration Characteristics:
4ax Infiltration Capacity (in) :252.00
3CS Curve Number for Pervious :50
initial Abstraction Factor :0.20
6 /�

tage Storage Weir 1 Q Weir 2 Q Discharge
,ft) (ac-ft) (CEO) (cfs) (CEO)
------------------------------------------------------------
25-00 1.14 0.00 0.00 0.00
i 26.00 2.58 5.00 0.00 5.00
28.00 2.85 21.42 0.00 21.42
30.00 3.24 30.29 0.00 30.29
Weir Numberl
Type circular orifice
Equation Q = C*R*2g^.5*H^n
Weir invert (ft) 25.00
c: 0.60 n: 0.50
orifice Diameter (ft) 2.00
� 2/s

- -- Rain Cumulative
(in) (in)
' Time
Time
(hr)
HHMM
.--------------
.500
00030
i .000
00100
L.500
00130
!.000
00200
500
00230
.000
00300
.500
00330
1.000
00400
1.500
00430
f .000
00500
I.500
00530
000
00600
5.500
00630
7.000
00700
.500
00730
.000
00800
-500
00830
).000
00900
1.500
00930
0.00
01000
0.50
01030
1.1.00
01200
L1.50
01130
12.00
01200
2.50
01230
3.00
01300
13.50
01330
L4.00
01400
'4.50
01430
5.00
01500
i 5.50
01530
L6.00
01600
16.50
01630
.7.00
01700
7.50
01730
.8.00
01600
18.50
01830
L9.00
01900
.9.50
01930
:0.00
02000
'0.50
02030
21.00
02100
21.50
02130
:2.00
02200
.2.50
02230
t3.00
02300
23.50
02330
14.00
00000
•------------------------
0.041
0.041
0.049
0.090
0.049
0.139
0.049
0.188
0.049
0.237
0.049
0.286
0.049
0.335
0.057
0.392
0.065
0.457
0.065
0.522
0.065
0.588
0.065
0.653
0.082
0.735
0.082
0.816
0.082
0.898
0.082
0.980
0.106
1.086
0.114
1.200
0.131
1.331
0.147
1.478
0.180
1.657
0.269
1.927
0.384
2.310
3.102
5.413
0.588
6.001
0.335
6.335
0.229
6.564
0.171
6.735
0.139
6.874
0.114
6.988
0.106
7.095
0.098
7.192
0.098
7.290
0.082
7.372
0.082
7.454
0.073
7.527
0.065
7.593
0.065
7.658
0.065
7.723
0.057
7.780
0.049
7.829
0.049
7.876
0.049
7.927
0.049
7.976
0.049
8.025
0.049
8.074
0.049
8.123
0.041
8.164
8.16
3���

33ydrograph Type :SCS 256 Rydrograph
.lime
Time
Rain
C Rain
Infiltration Excess
Excess
Outflow
'hr)
SHMM
(in)
(in)
(in)
(in)
(cfs)
(cfs)
-
500
00030
0.041
0.041
0.000
0.014
0.089
0.071
-.000
00100
0.049
0.090
0.000
0.016
0.107
0.103
-.500
00130
0,049
0.139
0.000
0.016
0.107
0.107
1.000
00200
0.049
0.188
0.000
0.016
0.107
0.101
.500
00230
0.049
0.237
0.000
0.016
0.107
0.107
,000
00300
0.049
0.286
0.000
01016
0.107
0.107
s.500
00330
0.049
0.335
0.000
0.016
0.101
0.107
1.000
00400
0.057
0.392
0.000
0.019
0.124
0.221
'.500
00430
0.065
0.457
0.000
0.022
0.142
0.139
.000
00500
0.065
0.522
0.012
0.022
0.142
0.142
.500
00530
D.065
0.588
0.044
0.022
0.142
0.142
5.000
00600
D.065
0.653
0.044
0.022
0.142
0.142
5.500
00630
0.082
0.735
0.05.5
0.027
0.1.78
0.17D
".000
00700
0.082
0.816
0.055
0.027
0.178
0.178
.500
00730
0.082
0.898
0.055
0.027
0.178
0.178
.000
00800
0.082
0.980
0.055
0.027
0.178
0.178
3.500
00830
0.106
1.086
0.071
0.035
0.231
0.220
).000
00900
0.114
1.200
0.076
0.038
0.249
0.245
.500
00930
0.131
1.331
0.087
0.043
0,284
0.277
0.00
01000
0.147
1.478
0.09E
0.049
0.320
0.313
_0.50
01030
0.180
1.657
0.117
0.062
0.409
0.391
L1.00
01100
0.269
1.927
0.162
0.108
0.707
0.646
LI.50
01130
0.384
2.310
0.205
0.179
1.176
1.080
2.00
01200
3.102
5.413
1.009
2.093
13.746
11.168
2.50
01230
0.588
6.001
0.117
0.471
3.091
5.276
,3.00
01300
0.335
6.335
0.060
0,274
1.801
2.065
13.50
01330
0.229
6.564
0.039
0.190
1.245
1.359
4.00
01400
0.171
6.735
0.028
0.143
0.941
1.004
4.50
01430
0.139
6.874
0,022
0.117
0.766
0.802
5.00
01500
0.114
6.988
0.018
0.097
0.634
0.661
L5.50
01530
0.106
7.095
0.016
0.090
0.591
0.600
L6.00
01600
0.090
7.192
0.015
0.083
0.547
0.556
16.50
01630
0.098
7.290
0.014
0.084
0.549
0.549
7.00
01700
0.082
7.372
0.012
0.070
0.459
0.477
7.50
01730
0.062
1.454
0.012
0.070
0.460
0.460
L8.00
01800
0,073
7.527
0.010
0.063
0.415
0.424.
L8.50
01830
0.065
7.593
0.009
0.056
0.370
0.379.
9.00
01900
0.065
7.658
0.009
0.056
0.370
0.370
.9.50
01930
0.065
7.723
0.009
0.057
0.371
0,371
:0.00
02000
0.057
7.780
0.008
0.050
0.325
0.335
20.50
02030
0,049
7.829
0.006
0.043
0.279
0.289
21.00
02100
0.049
7.678
0.006
0.043
0.279
0.279
.1.50
02130
0.049
7.927
0.006
0.043
0.280
0.280
:2.00
02200
0.049
7.576
0.006
0.043
0.280
0.280
:2.50
02230
0.049
8.025
0.006
0.043
0.281
0,280
23.00
02300
0.049
8.674
0.006
0.043
0.281
0.281
23.50
02330
0.049
8.123
0.006
0.043
0.281
0.281
A .00
00000
0.041
8.164
0.005
0.036
0.235
0.244
:4.50
00030
0.000
8.164
0.000
0.000
0.000
0.048
-------------------------------------------------------------------
8.164
2.590
5.235
5.235
Totals
for Watershed
in
inches over
3.26 acres
.ational Coefficient
= 0.683
Peak Flow
(cfs) = 11.17
Af `7

Time Inflow
outflow
Stage
Storage
I (hr)
(cfs)
(cfs)
(ft)
- - -----
(ac-ft)
-
---------••---------------------
0.50
0.07
0.01
25.00
1.15
1.00
0.10
0.02
25.00
1.15
1.50
0.11
0.03
25.01
1.15
2.00
0.11
0.04
25.01
1.16
2.50
0.11
0.05
25.01
1.16
3.00
0.11
0.06
25.01
1.16
3.50
0.11
0.07
25.01
1.16
4.00
0.12
0.07
25.01
1.17
4.50
0.14
0.08
25.02
1.17
5.00
0.14
0.09
25.02
1.17
5.50
0.14
0.10
25.02
1.17
6.00
0.14
0.10
25.02
1.17
6.50
0.17
0.11
25.02
1.18
1.00
0.18
0.12
25.02
1.18
7.50
0.18
0.13
25.03
1.18
8.00
0.18
0.13
25.03
1.18
8.50
0.22
0.15
25.03
1.19
9.00
0.25
0.16
25.03
1.L9
9.50
0.28
0.17
25.03
1.20
10.00
0.31
0.19
25.04
1.20
10.50
0.39
0.22
25.04
1.21
11.00
0.65
0.27
25.05
1.22
11.50
1.08
0.38
25.08
1,25
1.2.00
11.17
1.71
25.34
1.63
12.50
5.28
2.26
25.45
1.79
2.07
2.28
25.46
1.80
I13.00
13.50
1.36
2.16
25.43
1.77
14.00
1.00
2.01
25.40
1.72
14.50
0.80
1.85
25.37
1.68
15.00
0.66
2.69
25.34
1.63
15.50
0.60
1.54
25.31
1.59
16.00
0.56
1.41
25.28
1.55
16.50
0.55
2.29
25.26
1.52
17.00
0.48
1.19
25.24
1.49
17,50
0.46
1.09
25.22
1.46
18.00
0.42
1.00
25.20
1.43
18.50
0.38
0.92
25.18
1.41
19.00
0.37
0.64
25.17
1.39
19.50
0.37
0.78
25,1G
1.37
20,00
0,13
0,72
25,14
1,35
20.50
0.29
0.66
25.13
1.33
21.00
0.28
0.61
25.12
1.32
21.50
0.28
0.57
25.11
1.31
22.00
0.28
0.53
25.11
1.30
22.50
0.28
0.49
25.10
1.29
23.00
0.28
0.46
25.09
1.28
23.50
0.28
0.44
25.09
1,27
24.00
0.24
0.41
25.08
1:26
24.50
0.05
0.37
25.07
1.25
( 25.00
0.00
0.32
25.06
1.24
1 25.50
0.00
0.28
25.06
1.22
26.00
0.00
0.24
25.05
1.21
26.50
0.00
0.21
25.04
1.20
27.00
0.00
0.18
25.04
1.20
27.50
0.00
0.15
25.03
1.19
28.00
0.00
0.13
25.03
1.18
28.50
0.00
0.12
25.02
1.18
29.00
0.00
0.10
25.02
1.17
29.50
0.00
0.09
25.02
1.17
30.00
0.00
0.07
25.01
1.17
30.50
0.00
0.06
25.01
1.16
31.00
0.00
0.06
25.01
1.16
31.50
0.00
0.05
25.01
1.16
32,00
0,00
0.04
25,01
1,16
32.50
0.00
0.04
25.01
1.16
33.00
0.00
0.03
25.02
1.15
33.50
0.00
0.03
25.01
1.15
34.00
0.00
0.02
25.00
1.15
34.50
0.00
0.02
25.00 --------1_15------
Max: ------
--------------------------------------------------------------
11.17_-----2.28--------
25.46
1.80
` nitiai Pond Volume
O01.147 as-ft
_otal Inflow Volume
001.421 ac-ft
Yotal outflow Volume
001.416 ac-ft
� otal Percolation
Volume
000.000 ac-ft
!
°final Pond
Volume
(stage):
001.151 ac-ft
Final Pond
Volume
(calc) :
001.153 ac-ft
1 lifference-(error)
-
-000.002 ac-ft

I' rJIJ: /r
Pd
nordi caroling
ArLhitects ❑ Engineers ❑ Planners
DESIGN CRITERIA
The proposed project includes 6.9 acres of disturbed area and 2.16 ac of impervious area.
According to the DWQ Table 1.1 of the NC DENR Best Management Practices, the pond will
provide removal of over 85% total dissolved solids, with an actual SA/DA ratio of 0.79,
greater than the required 0.59.
The design criteria for runoff control volume is the first 1" of run-off volume. Utilizing
rational method, an impervious area of 2.16 acres, the. design rainfall volume is 59,000 gal.
With inlet control, the pond controls the design rainfall volume at elevation 25.4. The
permanent pool/wet storage provided is 236,733 cu ft and temporary pool volume of 359,704.
cu ft. The provided storage far exceeds the requirements. The draw down of the temporary
pool of the design run-off is two days.
Regarding the required items in the checklist, there is NO discrete stormwater collection
system in the proposed project and all run-off enters the pond via overland relief, along the
entire perimeter of the pond. Under these conditions, a forebay would not provide the benefits
normally provided by a forebay. All sediment will be deposited in a uniform manner along the
entire perimeter and will have to be removed accordingly, when the ponds volume is reduced
25%.
The ponds outlet includes two 24-inch and one 36-inch corrugated metal pipes, with trash rack
and a mechanism to drain the pond for maintenance.
The pond has three feet of permanent pool depth, a length -to -width ratio to 2.5:1 and a 10-foot
vegetated perimeter shelf,
The entire perimeter of the pond above the permanent pool has established vegetated cover.
The pond is not within an easement, as the owner is the Town of Surf City and there are no
access issues.
Erosion and Sedimentation control plan is provided for reference and has been submitted
under separate cover. Per the plan, the basin will not serve as a sediment basin during
construction. All erosion and sediment controls, including sediment traps at the site entrance
have been identified. A sequence of events has been established and limits -of disturbance are
identified to be flagged and honored during construction.
1FCadsradonI fead12M425 SURF C77Y R6C C"_;VTFRInrglnvaiinglramrya�dvneeQx rdNASTORAdI vAT£Rexynayrern�lfoxrava;dor

:-r/.•..:., i
)a
nordi carohna
krcltiteag ❑ Engineers 0 Plannors
WET DETENTION BASIN NARRATIVE
Surf City Community Park and Recreation Center
Surf City, Pender County, North Carolina
INTRODUCTION
The proposed project, the Surf City Community Park and Recreation Center, is located on J.H.
Batts Road approximately 1,700 feet to the west of NC 210, in Surf City, Pender County,
North Carolina (see vicinity map, Sheet CS). The proposed project is to be designed,
permitted, and constructed with grant funding for the Town of Surf City. The grant funding is
extremely time sensitive. Specifically, a significant portion of the grant funding must be
expe,nded •by October, 2005 or the funding will be forfeited. Due to the. project's grant funding
tight time line requirements, we are requesting this project to -be reviewed under the NC
DENR Express Permit Review process.
As seen on the attached site site plan, Sheet C-1, this project is located on a 23-acre parcel, in a
remote area of the Town. The project consists of a slab -on grade metal building to be used for
recreational purposes by the Town. of Surf City. In addition, the project includes parking, a
20-foot access road, and utilities -- water, sewer and electric. Currently, the majority of the site
is undeveloped. However, a portion of the site, where no development is proposed, is a closed
and capped, solid waste landfill, permit Number 7101.
DESIGN INTENT
The 23-acre site is heavily wooded and includes a large existing wet pond, with a permanent
pool surface area of over 2.6 acres. The existing pond has a three-foot permanent pool depth, a
length -to -width ration to 2.5:1 and a 10-foot vegetated perimeter shelf. There are no existing
or proposed discrete stormwater collection stnictures. The existing pond will be used to
provide stormwater management and will contain the entire first 1" of rainfall.
As detailed in the attached Wet Detention Basin Supplement,
1. Runoff from the unimproved areas of the project will be allowed to drain through
vegetated areas into the existing surface drainage channels.
2. New areas of impervious areas will drain via overland relief through heavily vegetated
areas to the pond.
3. The pond will contain the first 1" of run-off.
4. The pond allows the first 1" event to pass through the three corrugated metal pipes,
with an emergency spillway to pass the 100 year event.
5. The downstream receiving channel is very large. Cts banks are also heavily vegetated.
The outfall structure contains 4'x3' Cl A riprap.
liCadslaliaal earAM4425SURFCITYRRC(7iMCRkengineeringknnrapontleneci/x�'nt[fls]�R.N1N.fiERvrprcssprrn��mxraverdoc

DETENTION POND ANALYSIS
PROJECT M SW8 050518
FILE NAME: G:IDATAIWPDATAIWQSIPOND1050518.WK1
REVIEWER: P.Bartlett
PROJECT NAME: Surf City Comm -Park & Recr.Ctr.
DATE:
Receiving Stream; Beckys Creek Class:
Drainage Basin: Cape Fear Index No.
Site Area
Drainage Area
IMPERVIOUS AREAS
OS Bldgs
OS Streets
OS Prkg
OS Sidewalks
OS Other
TOTAL
.UV acres
:square feet
SURFACE AREA CALCULATION
% IMPERVIOUS 18.62%
Des. Depth 3
TSS: 85
1 v-Aug-05
SA; HQW
18-87-8
Area = 11.60 acres 1 . [C _
Rational C
16988.00
square feet
0.95
Clc 11 /-" —
32670.00
square feet
0.95
23958.00 -.-square
feet
0.95
f;,�r �'
6098.00
square feet
0.95
.
14375.00
square feet
0.90
iQ?
square feet
square feet
Rational.Cc--- ' ' 0.34
SA1DA Ratio 1.59%
Req. SA 8032 sf
Prov. SA 1€; sf
VOLUME CALCULATION * place a "1" in the box if Rational is used
Rational ?*
1
Des. Storm
Q inches
Rv=
0.22
Bottom
22 msl
Perm. Pool'
msl
Design Pool
28 msl
Design SA
126000 sf
Req. Volume
1€;?i cf
Prov. Volume
Acf
ORIFICE CALCULATION
FOREBAY
Perm. Pool Volume=
236733
Req. Forebay Volume=
47346.6
Provided Volume=
0.00
Percent=
SA @ _
Elevation=
Avg. Head = 1.00 ft Q2 Area = 3.70 sq. in.
Flow Q2, cfs 0.124 cfs Q5 Area = 1.48 sq. in.
Flow Q5, cfs 0.049 cfs Orifice Area 904.78 sq. in.
No. of Orifices € Q= 30.253 cfs
Diameter, inches
i€����� � :weir .i H x W
in -
x
in
Drawdown -{'f days
COMMENTS
Surface Area, Volume and Orifice are within Design GuidelineE

° . Z
north Carolina
Architects ❑ Engineers ❑Planners A-'Z CEI V s ,_.D
-Mr. Paul Bartlett �E p A p o m.
Customer Service Center -- WiRO sty [ S '✓ 1e
North Carolina Department of Environment and Natural Resources
127 Cardinal Drive Extension
Wilmington, NC 28405
RE: Surf City Community Park and Recreation Center Stornlwater Permit
EDA Project # 2004425
Paul,
Attached is the remaining item required for the Surf City Comm m"Unity Park and Recreation Center
stormwater review permit application. The 23-acre site is heavily wooded and includes an existing
wet pond, with a permanent pool surface area of over 2.6 acres, three feet of permanent pool depth,
a length -to -width ration to 2.5:1 and a 10-foot vegetated perimeter shelf. Attached are the
calculations for the existing pond, signed and sealed. These calculations include a full routing of
the existing pond, accounting for the new imperviousness surfaces. As you can see in the routing,
due to the large amount of volume in the existing pond, additional runoff from the new
imperviousness has little effect on existing conditions. The 25-year event is completely contained
within the existing pond. All other issues from your review have been addressed.
Thank you for your guidance with the North Carolina Department of Environment and Natural
Resources request for stormwater permit. if you have questions or need any additional information,
please feel free to call at the numbers below.
Sincer .
Y�
W] 441
an Ha r Sa ger, PE
vil En eer
DA pa
Raidgh
Greent'do
Jacisonarlb
4140 Pa'666 Avaaue
201 West first Strect
901 Hargett Street
Suite 300
Raleigh, NC 27612
Ph: 90.78mom
Suite 202
Croenvilla, NC 27868
Suite D
iJtonville, NC 28540
P6: 2,62.758.3138
Ph: 910.456.1620
F6: 919.787.9678
Fax: 252.758,0553
Fax: 910.456,1619
6rnad: adar0J:DAPasx=
Email: adag(-Fly &=,I
Email: =61& M- Apas;um
IICarLNmlorellcalrlQW,11S SURFCITYR(iC CIIM'ER�xxgMeuing4cnrre�vondeneeyrermflrsrornr penrrflobnrllaLrfrc
Morehead City
301 Commerao Avenue
Suits 102
Morehead City, NC 2,8557
Plu 252.247.2127
1'ax: 252.247.0674
E-mail; adafnQYEDApa.aorre
11

Appendix D
Summary of Permit Modification Meeting
Surf City Community Park
Stormwater Management High Density Permit Application

SW8 050518 Modification
Surf City Community Park & Recreation Center
15 December 2008
Meeting with DENR (K. Johnson)/Cavanaugh Engineering
1. Adding ball fields, two parking lots, sidewalks, and small buildings
(concession/restrooms) to an existing recreation center.
2. Two parking lots
a. One will drain to the existing pond.
b. One will not. But, it will sheet flow at least 30 ft to the ditch (2008
Coastal rule, 30ft buffer to waters of state, redevelopment) No wetlands
onsite.
3. Application:
a. Four drainage areas:
i. Whole project: Must be <25% (pre-2008 Coastal Rules, SA water)
I New area of project: Must be <12% BUA (2008 Coastal Rules,
SA water). (Note: Area previously counted as draining to the pond
will be excluded.)
iii. Pond: All area that will go to the pond in the new proposal,
including the proposed parking lot nearest the pond. (This is the
larger lot.)
iv. Non -Pond: All "new" area that is counted in the proposal towards
the <12% BUA. (Note: The green area in the previously -
permitted section will not be counted towards the 12% because it is
already counted as draining to the pond).
b. Calculations/supplement sheets
i. Wet pond: Will show that the pond can hold the additional water
from the proposed parking lot and still be designed according to
DENR requirements.
ii. Any other BUT data that will be used such as level spreader
calculations.

Appendix E
Stormwater Permit Criteria
Compliance Evaluation
Surf City Community Park
Stormwater Management High Density Permit Application

DRAINAGE AREA DESIGN SHEET
DATE: 5121=09 SHEET 1 OF 1
PROJECT:
PROJECT NO.:
DESCRIPTION:
041.08.016
Stormwater Permit Criteria Compliance Evaluation
L Whole project Must be Q5% (pre-2008 Coastal Rules, SA water)
Existina SRe Totals
C
Aft Aac
1
Buildings
0.96
11.00030
2
Street
095
35,820
0.82
3
Parking
0.98
X735
919
4
Sidewalk
0.95
9447
O.QO
6
Other(Tennis Courts
0195
14,142
032
7
Wooded sparse around litter
020
Wps
1902
8
We!
hied C
0.27
Total
Area
903.734 1 22.12
Ira ervious
Area
95,9291 2.20
Percent Impervious 9.95%
Post -Development Site Totals
C
A
Aac
1
Buildings
014
1912e
."
2
Street
096
36620
0.62
3
Parking
0.95
74,565
171
4
Sidewalk
095
20801
0.48
6
Other(Tennis Courts)
096
141
0-32
7
Wooded sparse ground litter
020
7W.428
1836
8
Wei
Mad C
0.33
Total
Area
90.7341
22.12
Ira ervious Area
1 164,3081
3.77
f arcenit Impervious 17.05%
DESIGN BY: ERB
CHECKED BY: ERB
H. New area of prgject Must be <l2%BUA (2008 Coastal Rules, SA water). (Note: Area previously counted as draining to the pond will be excluded.)
C
ARs
Asa
1
Buildin s
098
2.102
006
2
Street
0.95
000
3
Parkina
098
48 820
112
4
Sidewalk
095
17484
0+60
6
Other Crennis Courts
095
000
7
Wooded sparse ground litter
0.20
T 787
17.30
Previously Permitted
Impervious Area
0.95
(96,M
,2.20
8
Previously Permitted Open
Area
0.21)
(45.641)
-1.05
W
hted C
0.28
Totel
Area
Area
1e3
18.87
Impervious
68 376
1.57
Percent Impervious 8.32%
1aer am
iii. Pond: All area that will go to the pond in the new proposal, including the proposed parking lot nearest the pond. (This is the larger lot)
See DA 1 Post Development Calculations
iv. Non -Pond: All "new" area that is counted in the proposal towards the <12%BUA
(Note: The green area In the previously-pennttted section will not be counted towards the 12% because It Is already
counted as draining to the pond).
See DA 2 Post Development Calculations

Appendix F
Drainage Area Delineation Maps
Surf Ciiy Community Park
Stormwater Management High Density Permit Application

PROPOSED
CONCRETE WALKWAY
1 I t IVFOOT BRIDGE
PROPOSED
SLATTED WOOD
x
1 a
APPROXIMATE LOCATION OF
LEVEL SPREADER AND
VEGETATED FILTER
PROPOSED DRAINAGE AREA 2
DA SIZE = 477,468 SF / 10.96 AC
IMPERVIOUS SA = 29,143 SF / 0.67 AC
% IMPERVIOUS = 6.1%
CONCRETE WALKWAY
CONCRETE WALKWAY
WHOLE SITE POST —REDEVELOPMENT
SIZE = 963,734 SF / 22.12 AC
IMPERVIOUS SA = 164,306 SF / 3.77 AC
% IMPERVIOUS = 17.05%
SCALE
60, 0 60'
SCALE OF MAP MAY VARY
DUE TO METHODS OF REPRODUCTION.
PROPOSED DRAINAGE AREA 1
DA SIZE = 486,266 SF / 11.16 AC
IMPERVIOUS SA = 135,163 SF / 3.10 AC
% IMPERVIOUS = 27.8%
PROPOSEDPROPOSED
894—FT'
CONCRETE WALKWAY
PROPOSEDPROPOSED
2,103—FT'
CONCESSION BUILDING
k SIDEWALK
CONTRIBUTING AREA TO
EDPROPOSED
LEVEL SPREADER AND
1,086—LT'
VEGETATED FILTER
ASPHALT
ASPHALT
(49,108—FT')
WALKWAY
PROPOSED
31,009—FT' ASPHALT
/
PARKING
PROPOSED
ASPHALT
PARKING
(17,811rFT')
...
NNIS
TENNIS
I
1
COURTS
1
........................................................�:::::::::.�:::..:..
....EXISTING COMMUNITY CENTER DRI::.:::::.:::::::::::•::::•::::.:::.:::::::::::::::::::::::�iii:•:::::::::::::::::::::::::::::::::::::::::::::::::::.::�:....:::....:.......
VE.............................................................................................................................................
�:.
EXISTING COMMUNITY CENTER DRIVE..
EXISTING SI
PROPOSEDPROPOSED
4,142—FT'
ASPHALT
WALKWAY
EXISTING GRAVEL DRIVE
EDEXISTING IMPERVIOUS AREA
® PRCP0SEO PARKING IMPERVIOUS AREA
PROPOSED SIDEWALK IMPERVIOUS AREA
PARKING
Q
Z e
Y
LLI
C cLx,'t
Z U In
O Oj
W 0
3
a � g
cl
0
0
LL
SHEET NUMBER
C.1.2
00
ti
i I
�EIIII

Appendix G
Drainage Area Design Sheets
.N*-f. 16%5G9 �5%r OOXS
Surf City Community Park
Stormwater Management High Density Permit Application
7N1°y ILk
�rq*olq 0/,, !a',

PROJECT: Surf City Community Park
PROJECT NO.: 041.08.015
DESCRIPTION: Drainage Area Design Sheets
DRAINAGE AREA DESIGN SHEET
Exist[no Site Totals
C
A ( )
A ac
1
Bulidin s
096
17.025
0.39
2
Street
0.95
35 620
0.02
3
Park ng
096
25735
0.59
4
Sidewalk
0.95
3.407
0.08
5
Other ennis Courts
0.95
14,1421
0.32
6
Wooded, sparse ground litter
D35
W7.8ffi
1 19.92
7
Weighted
C
0.41
Total
Area
983 734
1 22.12
Im ervlous Area
95,929
2.20
Percent Im ervlous 9.95%
Post-DeveloomeM Site Totals
C
A fts
A ac
1
Buildings
0.95
19,1
0.44
2
Street
0.95
35 820
0.82
3
Parkin
4
Sidewalk
0.96
20,881
0.48
5
Other(Tennis Courts
0.95
14142
0.32
6
Wooded sparse ground litter
0.35
799.426
18.35
7
Weighted
C
0.45
Total
Area
1;83734
22.12
Impervious Area
164,306
3.77
Percent Impervious 17.05%
1 OF 5
DESIGN BY: LAM
CHECKED BY: ERB

DRAINAGE AREA DESIGN SHEET
DATE: 2/25/2009 SHEET 2 OF 5
PROJECT: Surf City Community Park DESIGN BY: LAM
PROJECT NO.: 041.08.015 CHECKED BY: ERB
DESCRIPTION: Drainage Area Design Sheets
DRAINAGE AREA 1- Exlstlno
C
A (fe)
A ae
1
Buildings
0.95
1 17,025
1 0.39
2
Street
0.96
35.620
0.32
3
Parldng
0.95
25.735
0.59
4
Sidewalk
085
3,407
0.08
5
Other ennis Courts
0.95
14,142
0.32
6
Wooded, sparse ground litter
0.36
390,337
7
1
�,
Weighted
C
0.47
Total
Area
486.266 1 11.16
Impervious Area
J95,929 2.20
Percent Impervious 19.7%
Volume Runoff to be Controlled From 1.5" Storm
Rv■0.05+0.009(I)
(Simple Method, Scheuler)
1=
19.7 Percent Impervious
Rv=
0.23 Runoff Coefficient
V=P*RV*Ad
P.
1.5 In Design Rainfall
V=
0.316 ac-ft Volume To Be Treated
V= 13,631 fe Volume To Be Treated
A=
o if Area of Treatment Device
D=
0 00 ft Pool Depth
V=�ft3 Volume of Treatment

DRAINAGE AREA DESIGN SHEET
DATE: 2125/2009 SHEET 3 OF
PROJECT: Surf City Community Park DESIGN BY:
PROJECT NO.: 041.08.015 CHECKED BY:
DESCRIPTION: Drainage Area Design Sheets
DRAINAGE AREA 2- Exlstina
C
_ A (R� A ac
1
Buildings
0.96
_
i 0.00
2
Street
0.95
1 0.00
3
Parking
0.95
I 0.00
4
5
Sidewalk
Other ennls Courts
0.96
W96-1
0.00
1 0.00
6
Wooded, sparse ground litter
0.35
477,468 10.E
7
Weighted
C
0.35
Total
Area
_
_ ;77, 1C3
10.96
Impervious Area
0.00
Percent Impervious 0.0%
Volume Runoff to be Controlled From 1.5" Storm
Rv=0.05+0.009(1) (Simple Method, Scheuler)
1= 0.0 Percent Impervious
Rv= 0.05 Runoff Coefficient
V=P•RvAd
P= 1.5 in Design Rainfall
V= 0.069 ac-ft Volume To Be Treated
V= 2,984 ft3 Volume To Be Treated

DRAINAGE AREA DESIGN
PROJECT: Surf City Community Park DESIGN BY: LAM
PROJECT NO.: 041.08.015 CHECKED BY: ERB
DESCRIPTION: Drainage Area Design Sheets
DRAINAGE AREA 1- Post-Develooment
1
Buildings
095
i_1 r0.128 f 0.44
2
Street
0.98
I 35,$20I 0.82
3
Parking
ova
56.7441 1.30
4
Sidewalk
0.95
9,529 1 0.22
5
Other enn!s Courts
0.08
14.142? 0.32
8
Wooded, sparse ground litter
0.35
3l9151 W7 8 00
7
Weighted
C
0.52
Total
Area
11.16
Im ervious Area
135,183
3.10
Percent Impervious 27.8%
Volume Runoff to be Controlled From 1.5" Storm
Rv=0.05+0.009(1) (Simple Method, Scheuler)
1= 27.8 Percent Impervious
Rv= 0.30 Runoff Coefficient
V=P•Rv"Ad
P= 3.8 in Design Rainfall
V= 1.047 ac-ft Volume To Be Treated
V= _ 45,812 ft3 Volume To Be Treated
A= o ftZ Area of Treatment Device
D= 3.00 ft Pool Depth
V=F 7 1 _,?45 ' Volume of Treatment

AREA DESIGN SHEET
PROJECT: Surf City Community Park DESIGN BY: LAM
PROJECT NO.: 041.08.015 CHECKED BY: ERB
DESCRIPTION: Drainage Area Design Sheets
DRAINAGE AREA 2- Post-Develooment
C
_A1te1
A ac
1
Buildings
0.95
0.00
2
Street
096
1-
0.00
3
Parkin
0 96
I 17.811
, 0.41
4
Sidewalk
0.96
11.3321
0.26
5
Other(Tennis Courts
0.98
0.00
B
Wooded, sparse round Inter
0.36
�4C8 25
10.29
7
Weighted
C
0.39
Total
Area
477 4
10.96
Impervious Area
29,143
0.67
Percent Impervious 6.1%
Volume Runoff to be Controlled From 1.5" Storm
Rv=0.05+0.009(I) (Simple Method, Scheuler)
I= 8.1 Percent Impervious
Rv= 0.10 Runoff Coefficient
V=P'Rv'Ad
P= 1.5 In Design Rainfall
V= 0.144 ac-ft Volume To Be Treated
V= 6,263 ft? Volume To Be Treated
A= 0 f? Area of Treatment Device
D= 0.00 ft Pool Depth
V= Level Spreader ft3 Volume of Treatment

Permit No.
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
WATER QUALITY CLASSIFICATION REQUEST FORM
This form may be photocopied for use as an original. y
I. PROJECT INFORMATION
In order to determine the receiving stream for a project in a coastal county or whether a State
Stormwater Management Permit will be required for a project in a non -coastal county, the
classification of the closest downslope surface waters (the surface waters that any sheet flow or
overflow from the project would flow toward) must be determined. Please complete Sections I and II
below. DQW Staff will determine the receiving stream classification, complete Section III, and return
the completed form to you.
Project Name: Surf City Community Park County: Pender
2.. Contact Person: Everett Gupton
3. Mailing Address: 130 North Front Street, Suite 202
4. City Wilmington State NC Zip 28401 Phone No. 910-392-4462
5. Name of closest downslope surface waters:
Intracoastal Waterway
6. Signature of contact person: Date: 9 49
7. Is a Sedimentation Erosion Control Plan or a CAMA Major Permit required? ®YES ❑NO
II. REQUIRED ITEMS
An 8.5" x 11" copy of the appropriate portion of a USES quad sheet showing the projects
property boundaries, receiving stream, major roads or State Roads numbers, and nearest
town or city must be attached.
III. CLASSIFICATION REQUEST (To be completed by Regional Office personnel)
1. Name of surface waters: W44en wi., f r �s'eekt s
2. River Basin: 6ilpe Fear Index No.
3. Classification (as established .by the EMC): 5A t H Q jAJ
4. Proposed Classification, if applicable: a-
5. State Stormwater Management Permit required? u ES []NO
6. Signature of Regional Office personnel: Date -11.G,
cc: DWQ -Regional Office
Consultant
Building Inspector
Central Files
Form SWU-111 Version 10.99

CAVANAU G H
Solutions through integrity and partnership
July 8, 2008
Water Quality Supervisor
NC DENR - Wilmington Regional Office
127 Cardinal Drive Extension
Wilmington, NC 28405-3845
Re: Watershed Classification for Surf City Community Park
Dear Sir or Madam:
This correspondence serves as a cover letter for the request of a Watershed
Classification for a site in Pender County, North Carolina, as identified on the enclosed
Watershed Classification Attachment and accompanying USGS Map. Please see the
attachments for more information.
Please return the classification to the undersigned and do not hesitate to contact our
office should you have questions or require any additional information.
Regards,
CAVANAUGH & ASSOCIATES, P.A.
GOA ,
Everett C. Gupton, E.I.
Enclosures
cc: Michael Moore, Town Manager

92C ENR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue Coleen H. Sullins
Governor
Jure 3, 2009
Michael Moore, Town Manager
Town of Surf City
PO Box 2475
Surf City, NC 28445
Director
Subject: APPLICATION RETURN
Project Name: Surf City Community Park
Project Number: SW8 050518 Mod.
Location/County: Pender. County
Dear Mr. Moore:
Dee Freeman
Secretary
The Division received an incomplete modified stormwater application for the project
listed above on May 28, 2009. The application and check number 038411, are being
returned because the package lacked the necessary elements to accept it for review.
The following information is needed to accept the application for review:
The existing previously permitted pond parameters are changing therefore
please provide a new signed O&M document. The old one will no longer apply.
® Please provide sealed design calculations for the pond, demonstrating that the
permitted pond can provide the new minimum surface area and storage volume
due to the increased drainage area and built -upon area without modification, or
how the pond is being modified to provide the new minimums.
® The calculations should show all your work, assumptions, equations used, etc.,
and must include calculations for the sizing of the new 4" drawdown orifice and
drawdown time. Please note that for wet detention ponds within % mile of and
draining to SA waters, the orifice must also restrict the outflow rate to no more
than the pre -development flow rate for the 1 year 24 hour storm. Simply listing
the results and providing the Hydraflow printouts.is not sufficient. See Chapter 2
of the BMP Manual.
® Page 2 of the application form should have a completed column demonstrating
overall low density at less than 25% for the entire project, as discussed at the
meeting with Kelly.
® The 1 year 24 hour precipitation depth in the Surf City area is going to be about
3.7-3.8 inches, per the NOAA website. Please recalculate the pre/post
development runoff volumes using this number or provide current documentation
supporting the use of 3.2 inches.
For a 3 foot deep pond, no sediment accumulation is allowed. The new signed
O&M for the wet pond will need to reflect this. The rules do not allow the pond
depth to be less than 3 feet at any time. To create a sediment accumulation area,
the pond will need to be excavated another foot, or the permanent pool elevation
raised by one foot.
Wilmington Regional Office
127 Cardinal Drive Extension, Wilmington, North Carolina 28405 One
Phone: [phone] FAX: [phone] Customer Service:1-877-623-6748 OfC,af+1'�f�`/lO%lllcl
Internet www.ncwaterquelily.org
An Equal Opportunity 1 Affirmative Action Employer G' rK'�K` ff

Mr. Moore
June 3, 2009
Page 2 of 2
® FYI - The proposed GeoWeb system cannot be credited as partially
impervious unless you provide a completed Permeable Pavement
supplement form and signed O&M. I could not tell from any of the
calculations if a BUA credit was being claimed or not.
® Please provide new layout and grading plans for the Community Center
Building, parking lot and tennis courts since they do not appear to have
been constructed per the 2005 approved plans and no plan revisions were
approved after the original permit was issued. I also noticed that the
amount of existing BUA claimed on the application is 1,839 square feet
more than what was approved.
® All modifications to previously permitted projects require that a partial
Designer's Certification be submitted, indicating that the BMP itself has
been constructed per the previous permit. Upon the completion of
construction for the new project, a full Certification is required which will
include the BUA and drainage area. Since the existing community
building, parking lot and tennis court were not built per the permit, you will
not be able to certify them along with the pond until after this modification
is constructed.
Please visit DWQ's website at http://h2o.enr.state.nc.us/su/bmg forms.htm to
download the latest available forms. Please provide the requested information
and return the package to the address below. If you have any questions, please
do not hesitate to call me at [phone] or email me at
linda.lewis(aD-ncdenr.gov.
Sincerely,
Linda Lewis
Environmental Engineer III
GDS/arl: S:IWQSISTORMWATERIRETURN1050518mod.jun09
cc: Ted Cavanaugh, P.E., Cavanaugh & Associates
Wilmington Regional Office File

'01 O SURF IVY 4ENORA.k_ FUND P.0. a 2475 SURF CITY, NC 28445 'a O 'I
5/21/09 5/22/09 90-448-630-573200 Stormwater Permit - 9A8. Al
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5/21/09 02414 NCDENR STORMWATER
PROVISION FOR PAYMENT OF MONIES TO FALL
DUE UNDER THIS AGREEMENT (WITHIN THE
CURRENT FISCAL YEAR) HAS BEEN MADE
BY APPROPRIATION DULY AU HORIZED AS
REQUIRED BY THE LOCAL GOV. BUDGET
AND FISCAL CONTROL A
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Bank of America, N.A.
Hotly Ridge, NC
66-19
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STORMWATER PERMIT
RALEIGH, NC 27602=a000. -
1180 384 L &II 1:0 5 3000 19'61: 010060 7000 L L L
TS BUSINE:aS PRODUCS. [; C. (910) 343-11 3 I-S(H1488-3(174
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Sent By: LAND MANAGEMENT;
910 452 0080 ; Ju1-31-02 9;36AM; Page 2/2
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July 31, 2002 �, ,, IM . 40.1
Margaret Gray
W.K. Dickson
909 Market Street
Wilmington, NC 28401
Reference: Proposed 23 acre Surf City Commtlnity Park on J.H.Batts Road In
Dear Ms. Gray:
l have recently had the picasuro to evaluate the above referenced tract. The site was
evaluated using the 1987 US Army Corps of Engineers Wetland. Manual and Soil 'ra,xonomy
(USDA, 1975) as a guide. The site is characterized as excessively well drained to somewhat
Poorly drained soils on uplands. Three major soil series were identified; Alpin, Onslow, and
Mandarin. The Alpin soil series (Thermic, coated Typie Quartzipsarnments) is an excessively
well drained soil on uplands. The Onslow soil series (Fine? -loamy, siliceous, thermic Spodic
Pak-udults) is a moderately well drained soil on uplands. A few localized depressions contained
Mandarin soils. The Mandarin soil series (Sandy, siliceous, thermic Typic Haplohumods) is a
sontowhat poorly drained upland soil, No wetlands were identified on this tract. Examination of
aerial photography and ground truthing both confront that this site is entirely upland. There are 2
areas where additional input from the US Army Corps of Engineers is warranted. The existing
sand pit has revegelated in localized areas with hydrophy tic vegetation and the northeastern
property line is a 6 to 8 foot deep ditch dug In uplands. Our office .has recently received
inconsistent advice on whether ditches cut in uplands are to be considered jurisdictional wetlands.
I have contacted Lillette Moore (USAGE, Wilmington Regulatory Branch) and she has agreed to
visit the site on Augu.9t 14, 2002 to kook at the 2 problem areas. As you know, no filling or
excavating can occur in 404 Wetlands without proper permits from appropriate State and Federal
Agencies.
Please do not hesitate to contact me if i can be of any more assistance in this project. I
will provide you with an additional project update after Ms. Moore's site visit in August. I may
be reached at 910-452-0001, 910-471-0777, or at 'willisms t et .
Sincerely,
John P Williams
NC. Licensed Soil Scientist, #1113
SC FrQfessional Soil Classifier, #58

(continued)
property, Action ID 200500145. A section of the site (where no development is proposed) is closed and,
capped, solid waste (permit Number 71011 landfill The erosion and sediment control plan submitted to
DNER under se arate cover is explicit hi detail to flalz and honor disturbance limits regarding the landfill.
Currently, the 23-acre site is heavily wooded and includes a pond anuroximately 250 feet by 450 feet. Of
ve erarea cone ance includinLy overland flow, existing channels and two la r a 100 and 200 vegetated
buf%rs,4nd wli' dafenf,■npona(,
06 * 4

11 Date Received I Fee Paid I Permit Number
State of North Carolina
Department of Environment and Natural Resources 1
Division of Water Quality,,
STORMWATER MANAGEMENT PERMIT APPLICATION OR' .
This form may be photocopied for use as an original IN, 0,9
I. GENERAL INFORMATION
1. Applicants name (specify the name of the corporation, individual, etc. who owns the project):
Town of Surf City
2. Print Owner/Signing Official's name and title (person legally responsible for facility and compliance):
T. Michael Moore, Town Manager
3. Mailing Address for person listed in item 2 above:
P.O. Box 2475
City:Surf City State:NC Zip:28445
Phone: (910 ) 328-4131 Fax: (910 ) 328-4132
Email:michael.moore®townofsurfcity.com
4. Project Name (subdivision, facility, or establishment name - should be consistent with project name on plans,
specifications, letters, operation and maintenance agreements, etc.):
Surf City Community Park
5. Location of Project (street address):
Surf City Community Center, 201 Community Center Drive
City:Surf City County:Pender Zip:28445
6. Directions to project (from nearest major intersection):
From intersection of Hwvs 50 and 210 head towards the beach turn right onto T H Batts Road Take another
right onto Community Center Drive
7. Latitude:34° 26' 26" N Longitude:77° 33' 55" W of project
8. Contact person who can answer questions about the project:
Name:Ted Burke Telephone Number: (910 ) 392-4462
Email:tburke®cavanaughsolutions.com
II. PERMIT INFORMATION:
1. Specify whether project is (check one): ❑New ❑Renewal ®Modification
Form SWU-101 Version 09.25.08 Page 1 of 4

2. If this application is being submitted as the result of a renewal or modification to an existing permit, list the
existing permit numberSW8 050518 and its issue date (if known)September 13, 2005
3. Specify the type of project (check one):
❑Low Density ❑High Density ®Redevelop ❑General Permit ❑Universal SMP ❑Other
4. Additional Project Requirements (check applicable blanks; information on required state permits can be
obtained by contacting the Customer Service Center at 1-877-623-6748):
❑CAMA Major ®Sedimentation/Erosion Control ❑404/401 Permit ❑NPDES Industrial Stormwater
III. PROJECT INFORMATION
1. In the space provided below, summarize how stormwater will be treated. Also attach a detailed narrative
(one to two pages) describing stormwater management for the project.
There is a high density and low density area of the project Stormwater in the high density portion will travel
by way of overland flow to the existing stormwater pond on the site. Stormwater in the low density portion of
the site will sheeflow to a level spreader with a vegetated filter strip prior to discharge.
2. Stormwater runoff from this project drains to the Cape Fear River basin.
3. Total Property Area: 22.12 acres 4. Total Coastal Wetlands Area: 0 acres
5. Total Property Area (3) - Total Coastal Wetlands Area (4) = Total Project Area**:22.12 acres
6. (Total Impervious Area / Total Project Area) X 100 = Project Built Upon Area (BUA):17.05 %
7. How many drainage areas does the project have?2
8. 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.
Fnr hioh density nroiects. complete the table with one drainage area for each engineered stormwater device.
Basin Information
Drainage Area 1
Drainage Area 2
Receiving Stream Name
Intracoastal Waterway
Intracoastal Waterway
Stream Class & Index No.
SA;HQW & 18-87-(5.5)
SA;HQW & 18-87-(5.5)
Total Drainage Area (sf)
486,266
477,468
On -site Drainage Area (sf)
486,266
477,468
Off -site Drainage Area (sf)
0
0
Existing Impervious* Area (sf)
95,929
0
Proposed Impervious*Area (sf)
39,234
29,143
% Impervious* Area (total)
27.8%
6.1%
Impervious* Surface Area
Drainage Area 1
Drainage Area 2
On -site Buildings (sf)
19,128
0
On -site Streets (sf)
35,620
0
On -site Parking (sf)
56,744
17,811
On -site Sidewalks (sf)
9,529
11,332
Other on -site (sf)
14,142
0
Off -site (sf)
0
0
r . Total (sf):
135,163
29,143
* Impervious area is defined as the built upon area including, but not limited to, buildings, roads, parking areas,
sidewalks, gravel areas, etc.
**Total project area shall be calculated to exclude Coastal Wetlands from use when calculating the built upon area
percentage calculation. This is the area used to calculate overall percent project built upon area (BLIA).
Form SWU-101 Version 09.25.08 Page 2 of 4

9. How was the off -site impervious area listed above derived?CAD generated, Excel tabulated
Projects in Union County: Contact the DWQ Central Office staff to check to see if you project is located
within a Threatened & Endangered Species watershed that may he subject to more stringent stormwater
requirements.
TV. DEED RESTRICTIONS AND PROTECTIVE COVENANTS
One of the following property restrictions and protective covenants are required to be recorded for all
subdivisions, outparcels and future development prior to the sale of any lot. If lot sizes vary significantly, a table
listing each lot number, size and the allowable built -upon area for each lot must be provided as an attachment.
Forms can be downloaded from hft://h2o.enr.state.nc.us/su/bml2 forms htm - deed restrictions.
Form DRPC-1
High Density Commercial Subdivisions
Form DRPC-2
High Density Developments with Outparcels
Form DRPC-3
High Density Residential Subdivisions
Form DRPC-4
Low Density Commercial Subdivisions
Form DRPC-5
Low Density Residential Subdivisions
Form DRPC-6
Low Density Residential Subdivisions with Curb Outlets
By your signature below, you certify that the recorded property restrictions and protective covenants for this
project shall include all the applicable items required in the above form, that the covenants will be binding
on all parties and persons claiming under them, that they will run with the land, that the required covenants
cannot be changed or deleted without concurrence from the NC DWQ and that they will be recorded prior to
the sale of any lot.
V. SUPPLEMENT FORMS
The applicable state stormwater management permit supplement form(s) listed below must be submitted for each
BMP specified for this project. Contact the Stormwater Permitting Unit at [phone] for the status and
availability of these forms. Forms can be downloaded from hU://h2o.enr.state.nc.us/su/bml2 forms htm.
Form SW401-Low Density
Form SW401-Curb Outlet System
Form SW401-Off-Site System
Form SW401-Wet Detention Basin
Form SW401-Infiltration Basin
Form SW401-Infiltration Trench
Form SW401-Bioretention Cell
Form SW401-Level Spreader
Form SW401-Wetland
Form SW401-Grassed Swale
Form SW401-Sand Filter
Form SW401-Permeable Pavement
Form SW401-Cistern
Low Density Supplement
Curb Outlet System Supplement
Off -Site System Supplement
Wet Detention Basin Supplement
Infiltration Basin Supplement
Underground Infiltration Trench Supplement
Bioretention Cell Supplement
Level Spreader/Filter Strip/Restored Riparian
Constructed Wetland Supplement
Grassed Swale Supplement
Sand Filter Supplement
Permeable Pavement Supplement
Cistern Supplement
Buffer Supplement
Form SWU-101 Version 09.25.08 Page 3 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 Office. (Appropriate office may be found by locating project on the
interactive online map at ho://h2o.enr.state.nc.us/su/msi maps.htm)
1. Please indicate that you have provided the following required information by initialing in the space provided
next to each item.
Initials
• Original and one copy of the Stormwater Management Permit Application Form
• Original and one copy of the Deed Restrictions & Protective Covenants Form (if
required as per Part IV above)
• Original of the applicable Supplement Form(s) and O&M agreement(s) for each BMP
• Permit application processing fee of $505 (Express: $4,000 for HD, $2,000 for LD)
payable to NCDENR
Calculations & detailed narrative description of stormwater treatment/management
o Copy of any applicable soils report
■ Two copies of plans and specifications (sealed, signed & dated), including:
- Development/ Project name
- Engineer and firm
-Legend
- North arrow
- Scale
- Revision number & date
- Mean high water line
- Dimensioned property/project boundary
- Location map with named streets or NCSR numbers
- Original contours, proposed contours, spot elevations, finished floor elevations
- Details of roads, drainage features, collection systems, and stormwater control measures
- Wetlands delineated, or a note on plans that none exist
- Existing drainage (including off -site), drainage easements, pipe sizes, runoff calculations
- Drainage areas delineated
- Vegetated buffers (where required)
VII. AGENT AUTHORIZATION
If you wish to designate authority to another individual or firm so that they may provide information on your
behalf (such as additional information requests), please complete this section. (ex. designing engineer or firm)
Designated agent (individual or firm):Cavanaugh & Associates P.A.
Mailing Address:130 North Front Street Suite 202
City•Wilmington State:NC Zip:28401
Phone: (910 ) 392-4462 Fax: [phone]
Email:[e-mail]
VIII. APPLICANT'S CERTIFICATION
I, (print or type name of person listed in General Information, item 2) T. Michael Moore
certify that the information included on this permit application form is, to the best of my knowledge, correct and
that the project will be constructed in conformance with the approved plans, that the required deed restrictions
and protective covenants will be recorded, and that the proposed project complies with the requirements of 15A
NCAC 21-1.1000.
Signature:
Date: S
Form SWU-101 Version 09.25.08 Page 4 of 4

Permit No.
(to be provided by DWQ)
of vvAr,!9
HWENR ,...,
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
WET DETENTION BASIN SUPPLEMENT
This form must be filled out printed and submitted.
The Required Items Check& (Part /l/) must bephnted, filled outand submitted along with all of the requiredinformation.
L PRGIECT hWOAii4N
Project name Surf City Community Park
Contact person Ted Burke
Phone number 910-3924462
Date 1-May-09
Drainage area number 1
1F, MIGN INFORIll 4
Site Characteristics .
Drainage area 486,266 ff
Impervious area, post -development P P P 135,163 ftz
% impervious 27.80 %}
Design rainfall depth 1.5 in -,00,9
Storage Volume: Non -SA Waters a�
Minimum volume required
Volume provided ft3
Storage Volume: SA Waters
1.5" runoff volume 18,245 ft3
Pre -development 1-yr, 24-hr runoff 13,999 ft3 #REF!
Post -development 1-yr, 24-hr runoff 8,152 ft3 #REFI
Minimum volume required 18,245 ft3
Volume provided 18,245 ft3
Peak Flow Calculations
Is the pre/post control of the lyr 24hr storm peak flow required?
1-yr, 24-hr rainfall depth
Rational C, pre -development
Rational C, post -development
Rainfall intensity: 1-yr, 24-hrstorm
Pre -development 1-yr, 24-hr peak flow
Post -development 1-yr, 24-hr peak flow
Pre/Post 1-yr, 24-hr peak flow control
Elevations
Temporary pool elevation
Permanent pool elevation
SHWT elevation (approx. at the perm. pool elevation)
Top of 1 Oft vegetated shelf elevation
Bottom of 1 Oft vegetated shelf elevation
Sediment cleanout, top elevation (bottom of pond)
Sediment cleanout, bottom elevation
Sediment storage provided
Is there additional volume stored above the state -required temp. pool?
Elevation of the top of the additional volume
Y (Y or N)
3.2 in
0.35 (unitless)
0.41 (unitless)
0.15 in/hr OK
15.55 ft3/sec
0.01 ft3/sec
-15.54 ft3/sec
25.10 fmsl
25.00 fmsl
WA fmsl
Ex fmsl
Ex imsl Data not needed for calculation option #1, but OK if provided.
23.00 fmsl
22.00 fmsl Data not needed for calculation option #1, but OK If provided.
1.00 ft
N (Y or N)
fmsl
Form SW401-Wet Detention Basin-Rev.6-2/20/09 Parts I. & II. Design Summary, Page 1 of 2

Permit No.
(to be provided by DWQ)
11, DIESM 1N1:0WAVOAE
Surface Areas
Area, temporary pool 115,000 ft,
Area REQUIRED, permanent pool 11,379 If
SAIDA ratio 2 34 (unitless)
Area PROVIDED, permanent pool, ApIyod
112,322 ft' OK
Area, bottom of 10ft vegetated shelf, AhoL,hjr
Existing ft,
Area, sediment cleanout, top elevation (bottom of pond), Abot u d
73,767 ft'
Volumes
Volume, temporary pool
18,245 ft3 OK
Volume, permanent pool, Vp ,,,_xo j
259,152 ft3
Volume, forebay (sum of forebays if more than one forebay)
0 ft3
Forebay % of permanent pool volume
%
SAIDA Table Data
Design TSS removal
85 %
Coastal SAIDA Table Used?
Y (Y or N)
Mountain/Piedmont SAIDA Table Used?
N (Y or N)
SAIDA ratio
2.34 (unitless)
Average depth (used in SAIDA table):
Calculation option 1 used? (See Figure 10-2b)
Y (Y or N)
Volume, permanent pool, V,,,,,-p.i
259,152 fe
Area provided, permanent pool, Apr -pool
112,322 ft
Average depth calculated
3.00 ft
Average depth used in SAIDA, d. (Round to nearest 0.5ft)
3.0 It
Calculation option 2 used? (See Figure 10-2b)
(Y or N)
Area provided, permanent pool, Are -pod
ftz
Area, bottom of 1 Oft vegetated shelf, Ahot AM
ftz
Area, sediment cleanout, top elevation (bottom of pond), Ab"Lpom
ft,
"Depth" (distance b/w bottom of 1 Oft shelf and top of sediment)
ft
Average depth calculated
It
Average depth used in SAIDA, d. (Round to nearest 0.5ft)
ft
Drawdown Calculations
Drawdown through orifice?
Diameter of orifice (if circular)
Area of orifice (R-non-circular)
Coefficient of discharge (Cn)
Driving head (Ho)
Drawdown through weir?
Weir type
Coefficient of discharge (Cj
Length of weir (L)
Driving head (H)
Pre -development 1-yr, 24-hr peak flow
Post -development 1-yr, 24-hr peak flow
Storage volume discharge rate (through discharge orifice or weir)
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
Form SW401-Wet Detention Basin-Rev.6-2120109
OK
OK
Check calculation.
Insufficient. Check calculation.
Y (Y or N)
4.00 in
in'
0.60 (unitless)
0.10 ft
(Y or N)
(unitless)
(unitless)
It
It
15.55 ft3/sec OK
0.01 ft3/sec OK
0.01 ft3/sec
2.00 days OK, draws down in 2-5 days.
OK, drawdown time is correct,
Existing :1
OK
Existing :1
OK
Existing ft
OK
Existing :1
OK
Existing :1
OK
Y (Y or N)
OK
2.5 ft
OK
Existing (Y or N)
OK
Existing (Y or N)
OK
Y (Y or N)
OK
Portable Submersible pump.
Parts I. & II. Design Summary, Page 2 of 2

k7!f'fi� 1AAr�4f
1
Av
A.
WDENR
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
LEVEL SPREADER, FILTER STRIP AND RESTORED RIPARIAN BUFFER SUPPLEMENT
This form must be completelyhlled out, printed and submitted.
DO NOT FORGET TO ATTACH THE REQUIRED ITEMS CHECKLIST AND ALL REQUIRED ITEMS (NEXT WORKSHEET)I
�PROACT INFOI i[QN
Project name Surf City Community Park
Contact name Ted Burke
Phone number 910-392.4462
Date May 1, 2009
Drainage area number 2-Parking Lot Sub -Drainage Area
1; iN Slt3f INFORMAWN
For Level Spreaders Receiving Flow From a BMP
Type of BMP NA
Drawdown flow from the BMP cfs
For Level Spreaders Receiving Flow from the Drainage Area
Drainage area
Impervious surface area
Percent impervious
Rational C coefficient
Peak flow from the 1 in/hr storm
Time of concentration
Rainfall intensity, 1 0-yr storm
Peak flow from the 10-yr storm
Where Does the Level Spreader Discharge?
To a grassed bioretention cell?
To a mulched bioretention cell?
To a wetland?
To a filter strip or riparian buffer?
Other (specify)
Filter Strip or Riparian Buffer Characterization (if applicable)
Width of grass
Width of dense ground cover
Width of wooded vegetation
Total width
Elevation at downslope base of level lip
Elevation at top of bank of the receiving water
Slope (from level lip to to top of bank)
Are any draws present?
Level Spreader Design
Forebay surface area
Feet of level lip needed per cfs
Answer "Y" to one of the following:
Length based on the 1 in/hr storm?
Length based on the 10-yr storm?
Length based on the BMP discharge rate?
Design flow
Is a bypass device provided?
48,598.05 ft2 . "
17,811.00 ft2 f- r�
36.65 % ".,,+AI �
0.47
0.52 cfs'
10.00 min
6.80 inthr
3.57 cis
N (Y or N)
N (Y or N)
N (Y or N)
Y (Y or N) Please complete filter strip characterization below.
See Below
50.00 ft
0.00
ft
0.00
It
50.00
It
21.00
fmsl
19.38 fmsl
3.25 % OK
N (Y or N) OK
97.20. sq ft OK
13 ft/cfs
Y
(Y or N)
Y
(Y or N)
N
(Y or N)
3.57
cfs
N
(Y or N) A bypass device Is not needed.
Form SW401-Level Spreader, Finer Strip, Restored Riparian Buffer-Rev.5 Parts I. and II. Design Summary, page 1 of 2

Length of the level lip
50.00 ft
Level spreader length OK.
Are level spreaders in series?
N (Y or N)
Bypass Channel Design (if applicable)
Does the bypass discharge through a wetland?
(Y or N)
Do not complete this section of the worksheet.
Does the channel enter the stream at an angle?
(Y or N)
Do not complete this section of the worksheet.
Dimensions of the channel (see diagram below):
Do not complete this section of the worksheet.
M
ft
Do not complete this section of the worksheet.
B
ft
Do not complete this section of the worksheet.
W
ft
Do not complete this section of the worksheet.
y
ft
Do not complete this section of the worksheet.
Peak velocity in the channel during the 10-yr storm
cis
Do not complete this section of the worksheet.
Channel lining material
Do not complete this section of the worksheet.
1 +
y
- 1
M
M
Form SW401-Level Spreader, Fitter Strip, Restored Riparian Buffer-Rev.5 Parts I, and II. Design Summary, page 2 of 2

Permit Number:
(to be provided by DWQ)
Drainage Area Number:
Filter Strip, Restored Riparian Buffer and Level Spreader
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.
Important maintenance procedures:
- Immediately after the filter strip is established, any newly planted vegetation
will be watered twice weekly if needed until the plants become established
(commonly six weeks).
- Once a year, the filter strip will be reseeded to maintain a dense growth of
vegetation
- Stable groundcover will be maintained in the drainage area to reduce the
sediment load to the vegetation.
- Two to three times a year, grass filter strips will be mowed and the clippings
harvested to promote the growth of thick vegetation with optimum pollutant
removal efficiency. Turf grass should not be cut shorter than 3 to 5 inches and
may be allowed to grow as tall as 12 inches depending on aesthetic requirements
(NIPC,1993). Forested filter strips do not require this type of maintenance.
- Once a year, the soil will be aerated if necessary.
- Once a year, soil pH will be tested and lime will be added if necessary.
After the filter strip is established, it will be inspected quarterly and within 24 hours
after every storm event greater than 1.0 inch (or 1.5 inches if in a Coastal County).
Records of operation and maintenance will be kept in a known set location and will 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 filter strip
Trash/debris is present.
Remove the trash/debris.
system
The flow. splitter device
(if applicable) .
The flow sputter device is
clogged.
Unclog the conveyance and dispose
of an . sediment off -site.
The flow sputter device is
Make any necessary repairs or
damaged.
replace if damage is too large for
repair.
MAY ' 8 2009
Form SWU401-Level Spreader, Filter Strip, Restored Riparian Buffer O&M-Rev.3 Page 1 of 3

BMW element:
Potentialproblem:
How I will remediate the problem
The Swale and the level
The swale is clogged with
Remove the sediment and dispose
lip
sediment.
of it off -site.
The level lip is cracked,
Repair or replace lip.
settled, undercut, eroded or
otherwise damaged.
There is erosion around the
Regrade the soil to create a berm
end of the level spreader that
that is higher than the level lip, and
shows stormwater has
then plant a ground cover and
bypassed it
water until it is established. Provide
lime and a one-time fertilizer
application.
Trees or shrubs have begun
Remove them.
to grow on the swale or just
downslope of the level lip.
The bypass channel
Areas of bare soil and/or
erosive gullies have formed.
Regrade the soil if necessary to
remove the gully, and then
reestablish proper erosion control.
Turf reinforcement is
Study the site to see if a larger
damaged or ripap is rolling
downhill,
bypass channel is needed (enlarge if
necessary). After this, reestablish
the erosion control material.
The filter strip
Grass is too short or too long
if applicable).
Maintain grass at a height of
approxima three to six inches.
Areas of bare soil and/or
Regrade the soil if necessary to
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.
Sediment is building up on
Remove the sediment and
the filter strip.
restabilize the soil with vegetation if
necessary. Provide lime and a one-
time fertilizer application.
Plants are desiccated.
Provide additional irrigation and
fertilizer as needed.
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.
Nuisance vegetation is
Remove vegetation by hand if
choking out desirable species.
possible. If pesticide is used, do not
allow it to get into the receiving
water.
The receiving water
Erosion or other signs of
Contact the NC Division of Water
damage have occurred at the
Quality local Regional Office, or the
outlet
401 Oversight Unit at 919-733-1786.
T.nrm CUUTTdf11 T cvPl CrwrPaA" T:iltar Qtrir% Roctmwrl R;"Qr:sm TlnfF6r fIRI lA-Rav Z ID.. I of I

Permit Number:
(to be provided by DWQ)
I 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: Surf City Community Park
BMP drainage area number:2 - Sub -Drainage Area
Print name:J. Michael Moore
Title:Town Manager
Address:P.O. Box 2475
Phone:[phone]
Signature:-''(.-o-t-C
Date:y 5 /� 910 9
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.
G , r,ee' , a Notary Public for the State of
/1/rr"'� nrdl-We , County of f�s� , do hereby certify that
T. (A r t /77ai I-c— personally appeared before me this 1�
day of Md2Z Zoo , and acknowledge the due execution of the
forgoing filter strip, riparian buffer, and/or level spreader maintenance requirements.
Witness my hand and official seal,
�i
i
NOTARY =
.� PUBLIC
'ZIR1II111
My commission expires ly l g- ( /5V j
Form SWU401-Level Spreader, Filter Strip, Restored Riparian Buffer O&M-Rev.3 Page 3 of 3

Project Name: .�G/ �[ Reviewer: < Date:
Project Received Date: J ' • " to Rejected circle one
Project Location: I Add info r uire (yes/no), Date received:
Symbols for completing form: '✓'= Yes/OK• 'x'= No/Deficient• 'n/a' m'1' c
Rules ubject (check all that apply)-
1995 Coastal -f�Y V� 9 2008 Coastal ❑ Phase II ❑ UniveAA:�
l
Paperwork: l; Q
C�Check for $505 (must be no older than 6months) �� �� `SU%6�'
®'`Application form with correct/original signatures (original plus 1 copy). If Corporation or LLC also:
o Print the info from the NCSOS
o Either, 1.) The applicant is listed on the NCSOS with his/her correct title or, 2.) A notarized letter of
authorization has been provided:
Supplements (1 original per BMP). BMP type(s):
�j O&M with correct/original signatures (1 original per BMP, except level spreaders/filter strips and swales)
Deed restrictions (if outparcel or subdividing) (original plus 1 copy)
o Deed restriction template (signed and notarized) or
o Proposed Declaration of Covenan#s and Restrictions (signed and notarized)
Soils report identifying the SHWT K(36 °
Supporting calculations, signed & sealed (if necessary)
Receiving stream classification: 54 , If SA or ORW also:
SA: USGS topo map with the site, the receiving waters and the'/2 mile radius shown to scale.
,o' ORW: 575 ft of MHWL for Area of Environmental Co max BUA per rule.
Modifications: 1.) If built: Designer's Cert., 2 If partially built: Partial Cert. 3.) If not built: No Cert. needed.
Development Type (check all that apply):
❑ Residential or !'Commercial ❑ Deed restrictions match?
❑ Subdivision or Q Single Lot ❑ Deed restrictions match?
Uo"High Density or 0,fow Density ❑ Deed restrictions match?
❑ Offsite project ❑ Redevelopment ❑ (Modification ® Exempt
® NCG02 (bulkhead) El NCG03 (clear/grade) L1 NCG04 (linear)
Density:
13`7�"BUA calculations include common areas, clubhouse, sidewalks, etc.
8-'*'BUA %: , Matches high/low density requirement for rule and receiving stream class.
X No obvious math errors —h av6 c sjc S
fly If High Density: Design storm correct for rule and receiving stream class. — 1 ter Z+4- p'Ql ip0� vSgd � Z
Plans, signed and sealed (2 sets): 1vi54e-.Al o-� 3 3.
51,"fwo sets received eLayout (with proposed BUA dimensions)
Grading ® Drainage area map (all HD systems & curb outlet swales)
Vicinity map ❑ Project Boundaries 03 Legend
❑ Wetlands:
o Delineated on plans o "No wetlands onsite" on plans
Details:
o Roads o Cul-de-sacs o Curbing o Sidewalk
�'° BMPs/ Level spreaders/ Filter strips/ Curb outlet swales o Buildings (Apts or Condos)
Offsite Projects:
❑ Designer's Certification has been submitted for the Offsite BMP receiving the runoff from the project.
❑ Deed restrictions have been recorded and a copy submitted for the Offsite BMP permit.
❑ Lot size has not changed from what was approved under the Master Plan.
❑ Correct lot number is referenced on the supplement form.
❑ Offsite system is in compliance with its permit, if known.
Infiltration Projects:
❑ Soils report: SHWT, soil type, and expected infiltration rate are provided.
❑ DWQ has conducted a site visit? Date:
Wet Ponds: Permanent Pool Meets One of the Following:
❑ Is located no lower than 6" below the estimated SHWT.
❑ Incoming groundwater is, quantified and evaluated, AND Storage volume verified, AND Outlet evaluated for free
drainage to the receiving waters under SHWT conditions.
Decision (check one):
❑ Complete: Return file to admin (Jo Casmer) to log in. (Stamped in received date = BIMS date)
❑ Slightly incomplete: E-mail consultant, request information to be returned within one business day (24 hours after.
request. Info requests on Friday, allow a return on the following business day). If info not returned, issue an
application return letter and give everything to admin. (Add info received date = BIMS date)
Substantially incomplete: Issue an application return letter and give everything to admin.

CAVANAUGH
Solutions through integrity and partnership
May 27, 2009
North Carolina Department of Environment and Natural Resources
Division of Water Quality MAY 2 8 2009
Attn: Ms. Kelly Johnson
127 Cardinal Drive Extension
Wilmington, North Carolina 28405
Re: DENR - DWQ Stormwater Management Permit Modification - #SW8 050518
Surf City Community Park
Surf City, Pender County, North Carolina
Dear Ms. Johnson:
Cavanaugh & Associates, P.A., on behalf of the Town of Surf City, hereby submits the following
application to NCDENR - Division of Water Quality for review of the Stormwater Management
Permit Application for the above mentioned project. This project is a high -density
redevelopment which includes one (1) wet pond as shown within accompanying
documentation.
To facilitate your review of the enclosed documentation, the following is a list of the items
constituting the application:
Item
No.
Description
Original
Copies
1
Stormwater Application Fee Check in the amount of $505.00
1
2
Stormwater Management Permit Application Form
1
1
3
Wet Detention Basin Supplement
T 1
4
Level Spreader, Filter Strip, and Restored Riparian Buffer
Supplement
1
5
Applicable plan sheets for the 'Town of Surf City Park' project
2
6
Stormwater Management High Density Permit Application
Supplemental Report
1
1
7
Soils Report
1
Please note that the sealed specifications for this project are 250 pages. For environmental
reasons we have omitted this document from our submittal. At your specific request, we would
be happy to provide either a digital or hard copy document for your review.

Town of Surf City Community Park
041.08.015
05/27/09
Page 2of2
Please do not hesitate to contact our office should you have any questions, comments, or
require any additional information.
Regards,
CAVANAUGH & ASSOCIATES, P.A.
Edward "Ted" R. Burke, PE
Attachments
cc: Michael Moore, Town of Surf City

SW8050518, Surf City Rec Center
Subject: SW8050518, Surf City Rec Center
From: Kelly Johnson <kelly.p [e-mail]>
Date: Mon, 15 Dec 2008 16:02:25 -0500
To: [e-mail]
Lisa,
Here is a copy of my notes from today's meeting. You may already know that the application and
BMP supplement sheets are available at,http://h2o.enr.state.nc.us/su/bmp forms.htm
Kelly
Kelly Johnson
Environmental Engineer
NC Department of Environment and Natural Resources
Surface Water Protection Section
Wilmington Regional Office
127 Cardinal Drive Ext.
Wilmington, NC 28405
Office: 910.796.7345
Fax: [phone]
SW8050518—Surf City Rec Center Pre App Meeting 200812
Content -Type: application/msword
Content -Encoding: base64
lofl
12/15/2008 4:02 PM

SW8 050518 Modification
Surf City Community Park & Recreation Center
15 December 2008
Meeting with DENR (K. Johnson)/Cavanaugh Engineering
1. Adding ball fields, two parking lots, sidewalks, and small buildings
(concession/restrooms) to an existing recreation center.
2. Two parking lots
a. One will drain to the existing pond.
b. One will not. But, it will sheet flow at least 30 ft to the ditch (2008
Coastal rule, 30ft buffer to waters of state, redevelopment) No wetlands
onsite.
3. Application:
a. Four drainage areas:
i.
Whole project: Must be <25% (pre-2008 Coastal Rules, SA water)
ii.
New area of project: Must be <12% BUA (2008 Coastal Rules,
SA water). (Note: Area previously counted as draining to the pond
will be excluded.)
iii.
Pond: All area that will go to the pond in the new proposal,
including the proposed parking lot nearest the pond. (This is the
larger lot.)
iv.
Non -Pond: All "new" area that is counted in the proposal towards
the <12% BUA. (Note: The green area in the previously -
permitted section will not be counted towards the 12% because it is
already counted as draining to the pond).
b. Calculations/supplement sheets
i.
Wet pond: Will show that the pond can hold the additional water
from the proposed parking lot and still be designed according to
DENR requirements.
ii.
Any other BMP data that will be used such as level spreader
calculations.