SW8011005_Historical File_20020319

11; 1Tsrq
Michael F. Easley, Governor
William G. Ross, Jr., Secretary
02 North Carolina Department of Environment and Natural Resources
Gregory J. Thorpe, Ph.D.,Acting Director
Division of Water Quality
!V �l Wilmington Regional Office
it
March 19,2002
Mr.Allen ' Teal, County Manager J
New Hanopver County 4, II ?
414 Chc�sstnut Street v�, �
Wilmington,NC 28401
Subject: Permit No. SW8 011005
Federal Point Fire Station
High Density Stormwater Project
New Hanover County
Dear Mr. O'Neal:
The Wilmington Regional Office received a complete Stormwater Management Permit Application for Federal
Point Fire Station on March 8,2002. 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 011005 dated March 19, 2002,for the construction of Federal Point Fire Station.
This permit shall be effective from the date of issuance until March 19,2012,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 ofthis 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 276 1 1-7447. 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 Linda Lewis, or
me at(910) 395-3900.
Sincerely,
—A c(L.
Rick Shiver
Water Quality Regional Supervisor
RSS/arl: S:1WQSISTORMWATIPERMIT1011005.MAR
cc: Mark Hargrove,P.E.
Tony Roberts,New Hanover County Inspections
Beth E. Wetherill,New Hanover County Engineering
Greg Thompson,P.E., Chief Project Engineer
Linda Lewis
Wilmington Regional Office
Central Files
Ire T'.
N.C.Division of Water Quality 127 Cardinal Drive Extension Wilmington,N.C.28405 [phone] Fax[phone] Customer Service
800-623-7748

State Stormwater Management Systems
Permit No. SW8 011005
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 ofNorth Carolina as amended,and
other applicable Laws, Rules, and Regulations
PERMISSION IS HEREBY GRANTED TO
New Hanover County
Federal Point Fire Station
New Hanover 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 March 19,2012,and shall be subject to the following
specified conditions and limitations:
I.DESIGN STANDARDS
1. This permit is effective only with respect to the nature and volume of stormwater described in the
application and other supporting data.
2. This stormwater system has been approved for the management of stormwater runoff as described on page
3 of this permit,the Project Data Sheet.The stormwater control has been designed to handle the runoff from
38,061 square feet of impervious area. This pond must be operated with a vegetated filter.
3. Approved plans and specifications for this project are incorporated by reference and are enforceable parts
of the permit.
4. The tract will be limited to the amount of built-upon area indicated on page 3 of this permit, and per
approved plans. The built-upon area for the fixture development is limited to None.
5. All stormwater collection and treatment systems must be located within the property boundaries,on property
owned by the permittee.
6. The runoff from all built-upon area within the permitted drainage area of this project must be directed into
the permitted stormwater control system. A permit modification must be submitted and approved prior to
the construction of additional built-upon area from outside of the approved drainage area.
2

State Stormwater Management Systems
Permit No. SW8 011005
DIVISION OF WATER QUALITY
PROJECT DESIGN DATA SHEET
Project Name: Federal Point Fire Station
Permit Number: SW8 011005
Location: New Hanover County
Applicant: Mr. Allen O'Neal, County Manager
Mailing Address: New Hanover County
414 Chestnut Street
Wilmington,NC 28401
Application Date: March 8,2002
Name of Receiving Stream/Index#: Cape Fear/Telfairs Creek/ 18-87-31.5-1
Classification of Water Body: "SC Sw"
Pond Depth,feet: 4
Permanent Pool Elevation,FMSL: 17
Drainage Area, acres: 1.82
Total Impervious Surfaces,ft2: 38,061
Offsite Area entering Pond, fie: None,per engineer
Required Surface Area,ft2: 3,282
Provided Surface Area, ft2: 3,571
Required Storage Volume, ft3: 3,184
Provided Storage Volume, ft3: 4,001
Temporary Storage Elevation, FMSL: 18
Controlling Orifice: 1"cp pipe
3

State Stormwater Management Systems
Permit No. SW8 011005
II. SCHEDULE OF COMPLIANCE
1. The stormwater management system shall be constructed in it's entirety, vegetated and operational for its
intended use prior to the construction of any built-upon surface.
2. During construction,erosion shall be kept to a minimum and any eroded areas of the system will be repaired
immediately.
3. The 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 side slopes and vegetated filter.
d. Immediate repair of eroded areas.
e. Maintenance of side slopes in accordance with approved plans and specifications.
f. Debris removal and unclogging of outlet structure,orifice device,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 not be allowed in the stormwater treatment system.
6. The facilities shall be constructed as shown on the approved plans.This permit shall become voidable unless
the facilities are constructed in accordance with the conditions of this permit, the approved plans and
specifications, and other supporting data.
7. Upon completion of construction,prior to issuance of a Certificate of Occupancy,and prior to operation of
this permitted facility,a certification must be received from an appropriate designer for the system installed
certifying that the permitted facility has been installed in accordance with this permit,the approved plans
and specifications, and other supporting documentation. Any deviations from the approved plans and
specifications must be noted on the Certification. A modification may be required for those deviations.
8. The stormwater system must be restored to design condition upon a transfer of ownership;occupancy of the
facility; or operation as a stormwater treatment device, if it is used as an Erosion Control device.
9. The permittee shall submit to the Director and shall have received approval for revised plans,specifications,
and calculations prior to construction,for any modification to the approved plans,including,but not limited
to,those listed below:
a. Any revision to any item shown on the approved plans, including the stormwater management
measures,built-upon area, details, etc.
b. Project name change.
c. Transfer of ownership.
d. Redesign or addition to the approved amount of built-upon area or to the drainage area.
e. Further subdivision,acquisition,or sale ofthe project area.The project area is defined as all property
owned by the permittee,for which Sedimentation and Erosion Control Plan approval was sought.
f. Filling in,altering, or piping of any vegetative conveyance shown on the approved plan.
10. The permittee shall submit final site layout and grading plans for any permitted future areas shown on the
approved plans,prior to construction.If the proposed BUA exceeds the amount permitted under this permit,
a modification to the permit must be submitted and approved prior to construction.
4

State Stormwater Management Systems
Permit No. SW8 011005
11. A copy of the approved plans and specifications shall be maintained on file by the Permittee for a minimum
of ten years from the date of the completion of construction.
12. The permittee shall notify the Division of any name,ownership or mailing address changes within 30 days.
13. Prior to the sale or lease of any portion of the property, the permittee shall notify DWQ and provide the
name,mailing address and phone number of the purchaser or leasee. An access/maintenance easement to
the stormwater facilities shall be granted in favor of the permittee if access to the stormwater facilities will
be restricted by the sale or lease of any portion of the property.
14. The permittee is responsible for verifying that the proposed built-upon area does not exceed the allowable
built-upon area.
15. 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.
III. GENERAL CONDITIONS
1. This permit is not transferable. In the event there is a desire for the facilities to change ownership,or there
is a name change of the Permittee, a formal permit request must be submitted to the Division of Water
Quality accompanied by an application fee,documentation from the parties involved,and other supporting
materials as may be appropriate. The approval of this request will be considered on its merits and may or
may not be approved.Responsibility for compliance with all permit conditions remains with the Permittee
until such time as the Division approves the formal permit request.
2. Failure to abide by the conditions and limitations contained in this permit may subject the Permittee to
enforcement action by the Division of Water Quality, in accordance with North Carolina General Statute
143-215.6A to 143-215.6C.
3. The issuance of this permit does not preclude the Permittee from complying with any and all statutes,rules,
regulations,or ordinances which may be imposed by other government agencies(local, state, and federal)
which have jurisdiction.
4. In the event that the facilities fail to perform satisfactorily, including the creation of nuisance conditions,
the Permittee shall take immediate corrective action,including those as may be required by this Division,
such as the construction of additional or replacement stormwater management systems.
5. The permittee grants DENR Staff permission to enter the property during normal business hours for the
purpose of inspecting all components of the permitted stormwater management facility.
6. The permit may be modified, revoked and reissued or terminated for cause. The filing of a request for a
permit modification,revocation and reissuance or termination does not stay any permit condition.
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.
Permit issued this the 19th day of March,2002.
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
Gregory J. Thorpe, Ph.D.,Acting Director
Division of Water Quality
By Authority of the Environmental Management Commission
5

State Stormwater Management Systems
Permit No. SW8 011005
Federal Point Fire Station
Stormwater Permit No. SW8 011005
New Hanover 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:
' SEAL
Signature
Registration Number
Date
6

State Stormwater Management Systems
Permit No. SW8 011005
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. The outlet/bypass structure elevations are per the approved plan.
5. The outlet structure is located per the approved plans.
6. • Trash rack is provided on the outlet/bypass structure.
7. All slopes are grassed with permanent vegetation.
8. Vegetated slopes are no steeper than 3:1.
9. The inlets are located per the approved plans and do not cause short-circuiting of the system.
10. The permitted amounts of surface area and/or volume have been provided.
11. Required drawdown devices are correctly sized per the approved plans.
12. All required design depths are provided.
13. All required parts of the system are provided, such as a vegetated shelf, and a forebay.
14. The overall dimensions of the system, as shown on the approved plans, are provided.
cc: NCDENR-DWQ Regional Office
Tony Roberts,New Hanover County Building Inspections
7

OFFICE USE ONLY
Date Received Fee Paid Permit Number
/o-2-oj Hod. /-Z3-oZ 420'/ SS!74: 51,0i3 of 1005
State of North Carolina
Department of Environmental and Natural Resources
Division of Water Quality
STORMWATER 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):
New Hanover County Fire Services
2. Print Owner/Signing Official's name and title(person legally responsible for facility and compliance):
Greg Thompson,Chief Project Engineer
3. Mailing Address for person listed in Item 2 above:
414 Chestnut Street .
City: Wilmington State: NC Zip: 28401
Telephone Number: [phone]
4. Project Name(subdivision, facility, or establishment name—should be consistent with project name on plans,
specifications,letters,operation and maintenance agreements, etc.):
Federal Point Fire Station
5. Location of Project(street address):
9815 River Road
City: Wilmington County New Hanover
6. Directions to project(from nearest major intersection):
0.75 miles south"The Cape Boulevard"along Carolina Beach Road,right on River Road(S),
approximately 1/2 mile on left
7. Latitude: . 34° 03 " 30"N Longitude: 77° 54" 00" W of project.
8. Contact person who can answer questions about the project::
Name: Mark Hargrove,PE Telephone Number: [phone]
II. PERMIT INFORMATION:
1. Specify whether project is(check one): X New Renewal Modification
Form SWU-101 Version 3.99 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 number N/A and its issue date(if known) . N/A
3. Specify the type of project(check one):
Low Density X High Density Redevelop General Permit Other
4. Additional Project Requirements(check applicable blanks):
CAMA Major X Sedimentation/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
M. 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.
First 1"runoff collected and routed to pond with orifice draw-down of 2.2 days 90%TSS with 4' depth
Provided. Pre-development discharge maintained.
2. Stormwater runoff from this project drains to the Cape Fear River Basin.
3. Total Project Area: 1.82 acres.
4. Project Built Upon Area: 48.1 %.
5. How many drainage areas does the project have? 1
6. Complete the following information for each drainage area. If there are more than two drainage areas in the
project,attach and additional sheet with the information for each area provided in the same format as below.
Basin Information Drainage Area 1 Drainage Area 2
Receiving Stream Name Cape Fear River
Receiving Stream Class CSW
Drainage Area 79,150 SF— 1.82 AC
Existing Impervious*Area 1,657 SF—0.04 AC
Proposed Impervious*Area 38,061 SF
%Impervious* Area(Total) 48.1 %
Impervious* Surface Area Drainage Area 1 Drainage Area 2
On-Site Buildings 11,602 SF
On-Site Streets N/A
On-Site Parking 24,901 SF
On-Site Sidewalks 1,558 SF
Other On-Site N/A
Off-Site N/A
Total: 38,061 SF—0.87 AC Total:
*Impervious area is defined as the built upon area including, but not limited to, buildings, roads,parking areas,
sidewalks,gravel areas, etc.
Form SWU-101 Version 3.99 Page 2 of 4

7. How was the off-site impervious area listed above derived? N/A
IV. DEED RESTRICTIONS AND PROTECTIVE COVENANTS
The following italicized deed restrictions and protective covenants are required to be recorded for all
subdivisions, out parcels, 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.
1. The following covenants are intended to ensure ongoing compliance with state stormwater management
permit number N/A as issued by the Division of Water Quality. These covenants may not
be changed or deleted without the consent of the State.
2. No more than 38,061 square feet of lot shall be covered by structures or impervious materials.
Impervious materials include asphalt, gravel, concrete, brick, stone, slate or similar material but 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.
S. All permitted runoff from the 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. 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 and General Permits Unit at(919) 7336083 for
the status and availability of these forms.
Form SWU-102 Wet Detention Basin Supplement
Form SWU-103 Infiltration Basin Supplement
Form SWU-104 Low Density Supplement
Form SWU-105 Curb Outlet System Supplement
Form SWU-106 Off-Site System Supplement
Form SWU-107 Underground Infiltration Trench Supplement
Form SWU-108 Neuse River Basin Supplement
Form SWU-109 Innovative Best Management Practice Supplement
Form SWU-101 Version 3.99 Page 3 of 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 Regional Office.
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 4'M211-
• One copy of the applicable Supplement Form(s)for each BMP /Ih0#1-
• Permit application processing fee of$420(payable to NCDENR) / na
• Detailed narrative description of stormwater treatment/management Mp
• Two copies of plans and specifications,including: /a��-
-Development/Project name
- Engineer and firm
- Legend
-North arrow
- Scale
-Revision number&date
-Mean high water line
-Dimensioned property/project boundary
-Location map with named streets or NCSR numbers
-Original contours,proposed contours, spot elevations, finished floor elevations
-Details of roads,drainage features,collection systems,and stormwater control measures
-Wetlands delineated,or a note on plans that none exist
- Existing drainage(including off-site), drainage easements,pipe sizes,runoff calculations
- Drainage areas delineated
- Vegetated buffers(where required)
VII. AGENT AUTHORIZATION
If you wish to designate authority to another individual or firm so that they may provide information on your
behalf,please complete this section.
Designated agent(individual or firm): W.K.Dickson&Co.,Inc.,%Mark Hargrove
Mailing Address: 909 Market Street
City Wilmington State: NC Zip: 28401
Phone: [phone] Fax: [phone]
VIII. APPLICANT'S CERTIFICATION
I, (print or type name of person listed in General Information, Item 2) Gregory ThomPson
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.
6;
Signature: ( Date: 510 h /3, ®2 Q v J
Form SWU-101 Version 3.99 Page 4 of 4

Ph4 W K ;CE!VED
r DICKSON LETTER OF TRANSMITTAL
MAR O 8 2002
909 Market Street
Wilmington, NC 28401 BY: 4:40A
910.762.4200 • FAX:[phone]
DATE: 03/08/02 JOB NO.: 10120.00(H)
TO: NCDENR
Division of Water Quality RE: Federal Point Fire Station
State Stormwater Permit SW8 011005
(e-mail response)
ATTENTION: Linda Lewis
We are sending via:
nOvernight Regular Mail Pick-up x Hand Delivered
The following items:
Correspondence x Plans Specifications Other as listed below:
COPIES DATE NO. DESCRIPTION
2 3/7/02 2.30 Grading, Drainage$ Erosion Control Plan
2 sets 3/7/02 Pond Calculations
2 1/4 Wet Detention Basin Supplement
THESE ARE TRANSMITTED as checked below:
x For Approval x As requested Approved as submitted Returned for corrections
For your use For review and comment Approved as noted Forward to subcontractor
REMARKS:
Linda in response to your e-mail on March 6 we are providing the above information. Also we discovered
an error on the supplement form sheet 1 of 4 and have corrected that as well. Appreciate your timely review efforts.
COPY TO: file SIGNED:
Marga/let Gray

r,
WK DICKSON
Engineering 909 Market Street
Land Planning Wilmington,NC 28401
Surveying [phone]
RECEIVED
FEDERAL POINT FIRE STATION •
MAR 0 8 2002
TOTAL AREA DRAINING TO POND =79,150 SF= 1.82 AC DWQ
PROD# SGu7O//o05 _
TOTAL PROPOSED IMPERVIOUS SURFACE AREA DRAINING TO POND:
PAVED AREAS = 24,901 SF ossify +,
SIDEWALK = 1,558 SF .Alk kC R0 BUILDING = 11,602 SF a 4 0+�SSIp'°�.�'
= 38,061 SF t
PERCENT IMPERVIOUS DRAINAGE AREA FOR POND: It p 1974 z
•
=38,061 SF/79,150 SF 141,*h tZ µPw.
=48.1 %
REQUIRED STORAGE FOR 1-INCH OF RUNOFF FOR POND: (use Schueler Method)
=0.05 +0.009 (I)
=0.05 +0.009(48.1)=0.483
=(1")(0.483)(1/12)(1.83)(43,560)
=3,209 CF(4,001 CF PROVIDED)
POND DEPTH SA/DA % POND SURFACE AREA(MIN.)
(FT) (SF)
4.0 4.14 3,285
IF POND DEPTH=4.0 FT, MINIMUM SURFACE AREA=3,285 SF
USED 90% TSS CHART TO SIZE POND
AREA @ ELEVATION 17.00=3,571 SF > 3,285 SF
REQUIRED STORAGE FOR FOREBAY: 20% OF TOTAL PERMANENT POOL VOLUME
=(0.2)(4,593)
=919 CF (851 CF PROVIDED)
Revised 3/07/02
PROJECT: FEDERAL POINT FIRE STATION SUBJECT: POND CALCULATI NS JOB NO.: 10120.00.WL
PREPARED BY: Pfl 3 NH-- DATE: 10'7 .CHECKED BY: mi* DATE:3!f Z PAGE NOJ OF 3

WK DICKSON
Engineering 909 Market Street
Land Planning Wilmington,NC 28401
Surveying
[phone]
STAGE -AREA-STORAGE FOR 1-INCH RUNOFF
ELEV. AREA STORAGE TOT.STORAGE
(FT) (SF) (CF) (CF)
NORMAL 17.00 3,571 -
POOL 731
17.20 3,740 731
765
17.40 3,911 1,496
800
17.60 4,086 2,296
835
17.80 4,262 3,131
870
1"RUNOFF 18.00 4,440 4,001
STAGE-AREA-STORAGE FOR FOREBAY
ELEV. AREA STORAGE TOT.STORAGE
(FT) (SFJ (CF) (CF)
FOREBAY INV 15.00 211 -
312
16.00 412 312
540
BERM ELEV 18.00 667 851
Revised 3/07/02
PROJECT: FEDERAL POINT FIRE TATION ,SUBJECT: POND CALCULAT O S JOB NO.: 10120.00.WL
PREPARED BY: APO DATE: 3/j`st CHECKED BY: M NI�- DATE: /D PAGE NO OF 3

WK DICKSON
Engineering 909 Market Street
Land Planning Wilmington,NC 28401
Surveying [phone]
POND RELEASE TIME FOR CONTROL PIPE: POND
ELEV. EFF. STORAGE VOL. RELEASED OUTFLOW RATE RELEASE TIME
(FT) (co (co (CFS) (HOURS)
17.82 3209
78 0.024 0.9
17.8 3131
835 0.023 9.9
17.6 2296
800 0.020 10.9
17.4 1496
765 0.017 12.8
17.2 731
731 0.012 17.3
17 0
TOTAL HOURS 51.8
DAYS 2.2
CONTROL PIPE : 1 INCH ORIFICE HOLES
USED ORIFICE EQUATION TO DETERMINE OUTFLOW RATE
Q =Cd*A*(2gh)^1/2
PERMANENT POOL VOLUME
ELEV. AREA STORAGE TOT. STORAGE
(FT) (SF) (CF) (CF)
13.00 274 -
466
14.00 658 466
606
15.00 1,098 1,072
1,346
16.00 1,594 2,418
2,175
17.00 2,756 4,593
Revised 3/07/02
PROJECT: FEDERAL POINT FIRE STATION SUBJECT: POND CALCULATIONS JOB NO.: 10120.00.WL
PREPARED BY:777is1I/ DATE: 3//LCHECKED BY: //7 in 1h— DATE: 7 Z PAGE NO_ OF 3

RE:Federal Point Fire Station
Subject: RE: Federal Point Fire Station
Date: Thu, 7 Mar 2002 08:28:02 -0500
From: "Mark Hargrove" <[e-mail]>
To: "Linda Lewis" <[e-mail]>
I will try to get you something by tomorrow.
Thanks
Mark
Original Message
From: Linda Lewis [mailto:[e-mail]]
Sent: Thursday, March 07, 2002 8:18 AM
To: Mark Hargrove
Subject: Federal Point Fire Station
Dear Mark:
Can you please provide me with a table of surface areas and volumes
�j� ✓below the permanent pool so I can check how you arrived at the permanent
pool volume of 3,521 cf?
V Please add the radii and the width of the forebay (since it is not as
wide as the pond) to the permanent pool dimensions.
t/ As previously requested, please label the outlet/weir structure on sheet
2.30. It's not labeled on any of the plans.
Upon receipt of these correct and complete items, I am prepared to issue
the permit.
Linda
1 of 1 3/7/2002 4:37 PM

�► WK
rV
DICKSONDICKSD RECEIVED LETTER OF TRANSMITTAL
909 Market Street JAN 2 3 LUUZ
Wilmington, NC 28401
910.762.4200 • FAX: [phone] BY: i,
DATE: 01/24/02 JOB NO.: 10120.00(H)
TO: NCDENR
Division of Water Quality RE: Federal Point Fire Station
State Stormwater Permit SW8 011005
(concurrent review response/modification submittal)
ATTENTION: Linda Lewis
- U 005
We are sending via:
n Overnight n Regular Mail n Pick-up n Hand Delivered
The following items:
Correspondence n Plans n Specifications Other as listed below:
COPIES DATE NO. DESCRIPTION
2 sets Stormwater Permit Application &Wet Detention Supplement
1 12/12/01 Letter of Authorization for applicant signature
1 1/22/02 Stormwater Calculations for DWQ
2 sets 2.10,2.20 rev 1/22/02,2.30 rev 1/22/02,2.61, 2.62
THESE ARE TRANSMITTED as checked below:
HFor Approval As requested Approved as submitted Returned for corrections
For your use For review and comment Approved as noted Forward to subcontractor
REMARKS:
Linda this submittal is dual-purpose. One was to respond to your review comments dated 12/7/01 and the
other was to respond to client approved revisions on 1/3/02. The client revision pertained to straightening out the
entrance drive. Thanks for allowing us the time to respond to the client in-lieu of return of an incomplete package. I hope
you find that everything is in order. Please let Mark Hargrove or myself know if you need anything else.
COPY TO: SIGNED:
Margari t Gray

��,j ¢1` �� TT r , ALLEN O'NEAL
`r OG County Manager
4, y� OFFICE OF THE COUNTY MANAGER
2r ANDREW J.ATKINSON
`' ¢"" * 320 CHESTNUT STREET, ROOM 502 Deputy County Manager
r1Q
WILMINGTON,NORTH CAROLINA 28401-4045
"'OpO1f Qom' PATRICIA A.MELVIN
pF GpQ TELEPHONE[phone] Assistant County Manager
N�RTN FAX[phone]
DAVID F.WEAVER
Assistant County Manager
414 Chestnut Street,Room 101
Telephone[phone]
December 12, 2001 Fax[phone]
TO WHOM IT MAY CONCERN:
By resolution dated November 13,2001,The New Hanover County Board of Commissioners
approved authorization for the Chief Project Engineer to sign permit applications on behalf
of New Hanover County. Therefore, Mr. Greg Thompson, New Hanover County Chief
Project Engineer, is duly authorized to sign on behalf of New Hanover County.
If you have questions,please feel free to call me.
ly,
Aiarje
en O'Neal RECEIVED
County Manager
JAN 2 3 2002
DWQ
PROD# 5(,0$01 (005

Federal Point Fire Station-SW8 011005
Subject: Federal Point Fire Statio - SW8 011005
Date: Tue, 8 Jan 2002 08:10:21 -i
From: "Mark Hargrove" <[e-mail]>
To: "Linda Lewis (E-mail)" <[e-mail]>
CC: "Margaret Gray" <[e-mail]>
Linda,
We are waiting on the County to make some decisions in regard to the
site before we can resubmit the changes you requested. Your letter
dated December 7, 2001 stated that you wanted revisions by January 7,
2002.
This email is to inform you that we are in the process of making changes
and will have them in hopefully this month.
If this is a problem, please let us know.
Thanks
Mark N. Hargrove, PE
Project Manager
WK Dickson & Co. , Inc.
(910)-762-4200
Fax (910) -762-4201
1 of 1 1/8/2002 9:02 AM

�OF W ATERp Michael F. Easley, Governor
O G William G. Ross, Jr., Secretary
Uj y North Carolina Department of Environment and Natural Resources
>' r
4 Gregory J. Thorpe, Ph.D., Acting Director
Division of Water Quality
Wilmington Regional Office
December 7,2001
Mr. Gregory Thompson, Project Engineer
New Hanover County
414 Chestnut Street
Wilmington,NC 28401
Subject: REQUEST FOR ADDITIONAL INFORMATION
Stormwater Project No. SW8 011005
Federal Point Fire Station
New Hanover County
Dear Mr. Thompson:
The Wilmington Regional Office received a Stormwater Management Permit Application for Federal
Point Fire Station on October 2, 2001. A preliminary review of that information has determined that the
application is not complete. The following information is needed to continue the stormwater review:
1. Please have the County Manager sign the application,or provide a letter of authorization from
the County Manager allowing you to sign the application on the County's behalf.
2. Please type or print the applicant's name in the blank provided in Section VIII of the
application.
QQ
r¢ 3. The engineer has used 20%of the 1" volume to size the forebay,even though the calculations
�,o indicate that the permanent pool volume was used.Please calculate the required forebay volume
using 20%of the pond volume from the bottom to the permanent pool elevation.
/ 4. Please provide a 3:1 L:W ratio in the pond.The width is 56',therefore,the pond should be about
171'long.
5. Please provide dimensions for the building and the permanent pool pond contour. �
6. Please specify the wetland species to be planted on the vegetated shelf.
Please label the weir/outlet structure location on sheet 2.30. Please either re-label the "Weir
Structure" detail as the outlet structure,or label the outlet structure as the "Weir Structure".
8. Please label the diameter of the orifice on the outlet structure detail.
9. The orifice is supposed to be sized based on the required 1" volume,not the volume actually
stored in the pond between the permanent and temporary pool elevations.Luckily,the provided
volume is not that much greater than the required volume, so the 1" orifice will be OK. For
future projects,please be sure to use the 1" volume to calculate the orifice size.
i X.
N.C.Division of Water Quality 127 Cardinal Drive Extension Wilmington,N.C.28405 [phone] Fax[phone] Customer Service
800-623-7748

Mr. Thompson
December 7, 2001
Stormwater Project No. SW8 011005
Please note that this request for additional information is in response to a preliminary review. The
requested information should be received by this Office prior to January 7, 2002, 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 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.
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(910) 395-3900.
Sincerely,
4;')Gla
Linda Lewis
Environmental Engineer
RSS/arl: S:1WQSISTORMWATIADDINFO1011005.DEC
cc: Linda Lewis
Mark Hargrove,P.E.
N.C.Division of Water Quality 127 Cardinal Drive Extension Wilmington,N.C.28405 [phone] Fax[phone] Customer Service
800-623-7748

WK
dr DICKSON LETTER OF TRANSMITTAL
909 Market Street
Wilmington, NC 28401
910.762.4200• FAX:[phone] �(1
DATE: 10/02/01 JOB NO.: 10120.00(H)
TO: NCDENR
Division of Water Quality RE: Federal Point Fire Station
State Stormwater Permit
ATTENTION: Linda Lewis
We are sending via:
OAT ( 2001
BY: :.6i4I
Overnight III Regular Mail n P• ick-up n H• and Delivered
The following items:
nCorrespondence x Plans n S• pecifications n O• ther as listed below:
COPIES DATE NO. DESCRIPTION
2 sets 9/13/01 Stormwater Permit Application &Wet Detention Supplement
1 9/17/01 Application Fee$420.00 (check 551943)
1 9/10/01 Stormwater Calculations for DWQ
2 sets 9/25/01 2.10, 2.20, 2.30, 2.61, 2.62
THESE ARE TRANSMITTED as checked below:
x For Approval As requested Approved as submitted Returned for corrections
For your use For review and comment Approved as noted Forward to subcontractor
REMARKS:
Linda please feel free to contact me or Mark Hargrove with any questions. Thanks!
COPY TO: Max Maxwell w-out plans/NHC, Ken SIGNED:
:5):1-
Newell w-out plans/SCN,file Margaret C
9 ray