SW8991210_HISTORICAL FILE_20000202

STORMWATER DIVISION CODING SHEET
POST-CONSTRUCTION PERMITS
PERMIT NO. SW8 qKI�L�
DOC TYPE ❑ CURRENT PERMIT
❑ APPROVED PLANS
21HISTORICAL FILE
❑ COMPLIANCE EVALUATION INSPECTION
DOC DATE 0 0 3 ( D
YYYYMMDD

r
State of North Carolina AE
�
Department of Environment r/
and Natural Resources �,A
Wilmington Regional Office NCDENR
James B. Hunt, Jr., Governor NORTH CA OLINA DEPARTMENT OF
ENVIRONMENT AND NATURAL RESOURCES
Bill Holman, Secretary
Division of Water Quality
March 10, 2000
Mr. William Bolton, III, Manager/Member
Windlass II, LLC
PO Box 10186
Raleigh,NC 27605
Subject: Permit No. SW8 991210
4206 Bridges Street Ext.
High Density Stormwater Project
Dear Mr. Bolton: Carteret County
The Wilmington Regional Office received a complete Stormwater Management Permit Application for 4206
Bridges Street Ext.on February 2,2000. 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 214.1000. We are
forwarding Permit No. SW8 991210 dated March 10, 2000, for the construction of 4206 Bridges Street Ext..
This permit shall be effective from the date of issuance until March 10,2010, 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 Scott Vinson, or
meat [phone].
Sincerely,
Rick Shiver
Water Quality Regional Supervisor
RSS/sav: S:\WQS\STORMWAT\PERMIT\991210.MAR
cc: Tim Reid, P.E.
Katrina Marshall, Carteret County Inspections
Scott Vinson
Wilmington Regional-Office
Central Files
127 Cardinal Dr.Ext.,Wilmington,North Carolina 28405 Telephone [phone] FAX [phone]
An Equal Opportunity Affirmative Action Employer 50% recycled/10% post-consumer paper

State Stormwater Management Systems '
Permit No. SW8.991210 '
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
Windlass II, LLC
4206 Bridges Street Ext.
Carteret 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 10, 2010 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
106,722 square feet of impervious area.
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.
2

State Stormwater Management Systems
Permit No. SW8 991210
DIVISION OF WATER QUALITY
PROJECT DESIGN DATA SHEET
Project Name: 4206 Bridges Street Ext.
Permit Number: SW8 991210
Location: Carteret County
Applicant: Mr. William Bolton, III, Manager/Member
Mailing Address: Windlass II, LLC
PO Box 10186
Raleigh, NC 27605
Application Date: February 2, 2000
Name of Receiving Stream/Index#: Peletier Creek/WOKO 20-36-11
Classification of Water Body: "SB"
If Class SA, chloride sampling results: n/a
Pond Depth, feet: 4.50
Permanent Pool Elevation, FMSL: 7.50
Total Impervious Surfaces, ftz: 106,722
Buildings, 15,246
Parking/Sidewalk/Streets, 49,223
Future Building, 10,019
Future Parking, 32,234
Offsite Area entering Pond, 112: none,per Engineer
Required Surface Area, ft2: 8,445
Provided Surface Area, ft2: 9,700
Required Storage Volume, W: 8,810
Provided Storage Volume, W: 13,453
Temporary Storage Elevation, FMSL: 8.75
Controlling Orifice: 2 - 1.00")pipe
r<_c it-
3

State Stormwater Management Systems
Permit No. SW8 991210''
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 except roads.
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.
d. Immediate repair of eroded areas.
e. Maintenance of side slopes in accordance with approved plans and specifications.
f. Debris removal and unclogging of outlet structure, orifice device and catch basins and piping.
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.
8. If the stormwater system was used as an Erosion Control device,it must be restored to design condition prior
to operation as a stormwater treatment device, and prior to occupancy of the facility.
9. The following items will require a modification to the permit:
a. Any revision to the approved plans, regardless of size.
b. Project name change.
C. Transfer of ownership.
d. Redesign or addition to the approved amount of built-upon area.
e. Further subdivision of the project area.
f. Filling in, altering, or piping of any vegetative conveyance shown on the approved plan.
10. The Director may determine that other revisions to the project should require a modification to the permit.
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.
4

State Stormwater Management Systems
Permit No. SW8 991210
•12. Prior to the sale of any portion of the property,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
of any portion of the property.
13. The permittee is responsible for verifying that the proposed built-upon area does not exceed the allowable
built-upon area.
14. The runoff from all built-upon area on the project must be directed into the permitted stormwater control
system.
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.
I11. 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.
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 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.
Permit issued this the 10th day of March, 2000.
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
Kerr. T. Stevens, Director
_+(L_`l Division of Water Quality
By Authority of the Environmental Management Commission
Permit Number SW8 991210
5

State Stormwater Management Systems
Permit No. SW8 991210"
4206 Bridges Street Ext.
Stormwater Permit No. SW8 991210
Carteret 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 991210
-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 outletfbypass 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
Katrina Marshall, Carteret County Building Inspector
7

.. . �. �,; `OFFICE USE ONLY :" _ '
Date Received Fee Paid Permit Number
State of North Carolina
Department of Envirorunent and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
This form may be photocopied for use as an original 'L� V D
I. GENERAL fNFORMATION DEC 0 8
1999
1. Applicants name(specify the name of the corporation,individual,etc.who owns the :
WINDLASS II, LLC t
2. Print Owner/Signing Official's name and title(person legally responsible for facility and compliance):
William Bolton III Member Manager
3. Mailing Address for person listed in item 2 above:
P.O. Box 10186
City: Raleigh State: NC zip: 27605
Telephone Number: ( 919 ) 828-90zI
4. Project Name(subdivision,facility,or establishment name-should be consistent with project name on
plans,specifications,letters,operation and maintenance agreements,etc.):
4206 Bridges Street Ext.
5. Location of Project(street address):
4206 Bridges Street Ext.
City: Morehead City County: Carteret
6. Directions to project(from nearest major intersection):
Highway 70 East to NC 24/Bridges St. Ext. Intersection, Left on Bridges St. Ext. ,
Cross Bridge, Project on Left Between Bridge and Friendly Road
7. Latitude: Longitude: of project
8. Contact person who can answer questions about the project:
Name: Mike Turnage Telephone Number: ( 252 ) 247-3908
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 and its issue date(if known)
3. Specify the type of project(check one):
_Low Density X Hrgh 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.
III. PROJECTYNFORMATION
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.
All runoff from impervious areas on the site will be directed through a
wet detention basin.
2. Stormwater runoff from this project drains to the Boque Sou nd H"Mat
3. Total Project Area: 4.44 acres 4. Project Built Upon Area: 55
5. How many drainage areas does the project have? 1
6. Complete the following information for each drainage area. If there are more than two drainage areas in the
project,attach an additional sheet with the information for each area provided in the same format as below.
Basm Irifoimatron ., " i ' D ainage Aiea 1Draina e'Aiea 2
g„<
Receiving Stream Name p 1 eti er Creek
Receiving Stream Class SB
Drainage Area 4.44 i
Existina Impervious*Area 0.30
Pro osedlm ervious`Area 2.45 Inc. uture
%Im ervious Area(total) 55 `
A Ysv ->: * D>;:
Im ervious Surface;Area ` ` Draainage Area 1 Kr ? ;,Drainage Area 2;�, sj>
On-site Buildings 0.58 "
On-site Streets Incl . in Parking
On-site Parking 1.87 ( Intl . Future)
On-site Sidewalks Incl . in Parkin
Other on-site
Off-site
Total: 2.45 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 Pave 2 of 4

7. How was the off-site impervious area listed above derived? -
IV. DEED RESTRICTIONS AND PROTECTIVE COVENANTS
The following italicized deed restrictions and protective covenants are required to be recorded for all
subdivisions,outparcels and future development prior to the sale of any lot.'If lot sizes vary significantly,a
table listing'each 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 as issued by the Division of Water Quality. These covenants may
not be clanged or deleted without the consent of the State.
2. No more than square feet of any lot shall be cowered by stnnctures 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 stornwater control
system.. These connectives 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 c&enants 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 Storrnwater and General Permits Unit at(919)733-5083 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(Dll'Q);
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 TR
• One copy of the applicable Supplement Form(s) for each BMP TR
• Permit application processing fee of$420(payable to NCDENR)
• Detailed narrative description of stormwater treatment/management
• Two copies of plans and specifications,including:
-Development/Project name
-Engineer and firm
-Legend
-North arrow
-Scale
-Revision number&date
-Mean high water line
-Dimensioned property/project boundary
- Location map with named streets or NCSR numbers
-Original contours,proposed contours,spot elevations,finished floor elevations
-Details of roads,drainage features,collection systems,and stormwater control measures
-Wetlands delineated,or a note on plans that none exist
-Existing drainage(including off-site),drainage easements,pipe sizes,runoff calculations
-Drainage areas delineated
-Vegetated buffers(where required)
VII. AGENT AUTHORIZATION
If you wish to designate authority to another individual or firm so that they may provide information on you:
behalf,please complete this section.
Designated agent(individual orfirm):_ Tim Reid - Moffatt & Nichol En ineers
Mailing Address: 2209 Century Drive, Suite 500,
City: Raleigh State: NC Zip: 27605
Phone: ( 919 ) 781-4626 Fax: ( 919 ) 781-4869
VIII. APPLICANT'S CERTIFICATION
1,(print or type name of person fisted in General Information, item 2) William E. Bolton, III
certify that the information included on this pemut 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 I A
NCAC 2H.1000. Ole
Signature: Date: A?
Form SWU-101 Version 3.99 Page 4 of 4

- MAR --13-00 15=43 FROM: MOFFATT + NICHOL (R) IOC 9197614863 PAGE 2
3
STORMWATER PERMIT PACKAGE
FOR
4206 Bridges Street
Morehead City; Carteret County
��uhny
GAR
SEAt �
16669 f
l NEB.
3- r3- cc
Prepared by:
MOFFATT &NICHOL ENGINEERS
2209 Century Drive, Suite 500
Raleigh,North Carolina 27612

3720 24372 7.59 0.016 0.000 0.016 3720 7.59
3760 24334 7.59 0.015 0.000 0.015 3760 7.59
3800 24297 7.58 0.015 0.000 0.015 3800 7.58
3840 24262 7.58 0.015 0.000 0.015 3840 7.58
3880 24227 7.57 0.014 0.000 0.014 3880 7.57
3920 24193 7.57 0.014 0.000 0.014 3920 7.57
3960 24160 7.56 0.013 0.000 0.013 3960 7.56
4000 24128 7.56 0.013 0.000 0.013 4000 7.56
4040 24097 7.56 0.012 0.000 0.012 4040 7.56
4080 24067 7.55 0.012 0.000 0.012 4080 7.55
4120 24038 7.55 0.012 0.000 0.012 4120 7.55
4160 24010 7.55 0.011 0.000 0.011 4160 7.55
4200 23983 7.54 0.011 0.000 0.011 4200 7.54
4240 23957 7.54 0.010 0.000 0.010 4240 7.54
4280 23932 7.54 0.010 0.000 0.010 4280 7.54
4320 23908 7.53 0.010 0.000 0.010 4320 7.53
4360 23885 7.53 0.009 0.000 0.009 4360 7.53
4400 23863 7.53 0.009 0.000 0.009 4400 7.53
4440 23841 7.53 0.008 0.000 0.008 4440 7.53
4480 23821 7.52 0.008 0.000 0.008 4480 7.52
4520 23802 7.52 0.008 0.000 0.008 4520 7.52
4560 23784 7.52 0.007 0.000 0.007 4560 7.52
4600 23767 7.52 0.007 0.000 0.007 4600 7.52
4640 23751 7.51 0.006 0.000 0.006 4640 7.51
4680 23736 7.51 0.006 0.000 0.006 4680 7.51
4720 23721 7.51 0.005 0.000 0.005 4720 7.51
4760 23708 7.51 0.005 0.000 0.005 4760 7.51
4800 23696 7.51 0.005 0.000 0.005 4800 7.51
4840 23685 7.51 0.004 0.000 0.004 4840 7.51
4880 23675 7.51 0.004 0.000 0.004 4880 7.51
4920 23666 7.50 0.003 0.000 0.003 4920 7.50
4960 23658 7.50 0.003 0.000 0.003 4960 7.50
5000 23651 7.50 0.002 0.000 0.002 5000 7.50
5040 23645 7.50 0.002 0.000 0.002 5040 7.50
5080 23640 7.50 0.002 0.000 0.002 5080 7.50
5120 23636 7.50 0.001 0.000 0.001 5120 7.50
5160 23633 7.50 0.001 0.000 0.001 5160 7.50
5200 23632 7.50 #N/A 0.000 #N/A 5200 7.50
5240 #N/A #N/A #N/A #N/A #N/A 5240 #N/A
5280 #N/A #N/A #N/A #N/A #N/A 5280 #N/A
5320 #N/A #N/A #N/A #N/A #N/A 5320 #N/A
5360 #N/A #N/A #N/A #N/A #N/A 5360 #N/A
5400 MA #N!A . #N/A W/A #N/A 5400 #N/A
5440 #N/A #N/A #N/A #N/A #N/A 5440 #N!A
5480 #N/A #N/A #N/A #N/A #N/A 5480 #N/A
5520 #N/A #N/A #N/A #N/A #N/A 5320 #N/A
5560 MA #N/A #N/A #N/A #N/A 5560 #N/A
5600 #N/A #N/A #N/A #N/A #N/A 5600 #N/A
5640 #N/A #N/A #N/A #N/A #N/A 5640 #N/A
5680 #N/A #N/A #N/A #N/A #N/A 5680 #N/A
5720 #N/A #N/A #N/A #N/A #N/A 5720 #N/A
5760 MA #N/A #N/A #N/A #N/A 5760 #N/A
5800 MA #N/A #N/A #N/A #N/A 5800 #N/A
5840 #N/A #N/A #N/A #N/A #N/A 5840 #N/A

6 Check 10-vr Flood To Size Outlet and Check Behavior
SINGLE RESERVOIR ROUTING RISER-BARREL WATERSHED ISTORM
N= I e= 6
H1'DROGRAPH WEIRlength 12.56 ft It= 34
Qp= 18.1 il
Co.= 3_g3 P%nthr= 5.1 illm
Tp= 39.3 min Zcr= 9.75 ft Arca= 434' acres
ddI'= 3.9 min Db= 18 in height= 6 ft
C'd= n.59 t:�gth= - ft
STAGE-STORAGE %t= 4 11 C I 9
Ks= 2262 CN= 8-
b= 1.56 CULVERT
%o= 3 R
N=
p= 7 in
INITIAL RATER LEVEL C'd= 0.6 "f.;_ , k= :Ain
%i= 7.5 R Im cn E.= 0 ft
DR\A\'DO\VN IIOLES REIR 1-E>IGCY SPILL
No.holes= 2 C%, 3 t1 tfc
Die(in.)= 1000 in I.= 20 It l-p= nv.
Cl.FLEV.= 7.5 ti Zcr= 9.5 li
\VEIR 2-TOP
No.holes= O C%v= .3
Dia(in.)= U.000 in I.= 120 Ii
Cl.ELEV.= 8.8 ft %cr= I000 li
STOR\IWATER SEDIMENT SETTLING
DRISCOLL'S SETTLING VELOCITIES FROM EPA REPORT 440/5-87-001
N= 2
FROM TO USE Vo Vo OVERALL B.4S/.N'SETTLL%'G
(FT/tl R) (FT/SEC) EFF1G FOR EACH CLASS
0 20 10 0.03 0.000009 8.1
20 40 30 0.30 0.000083 '2
40 60 50 1.50 0.000417 50.9
60 80 70 7.00 0,001944 81.2
80 100 90 65.00 0.018056 98.6 ^
COMPUTED RESULTS
Noon Surf Area=
0.19 acres OVERALL SETTLLN'G EFF1ClE.\'C3'= 53_
Max Surf Area= 0.23 acres 1f/A7.1jU,sf A/Q R I T10 =
Peak Stage= 9.31 j1 (\VA\T A,Q>458 FOR 5 VIE1;T)
Peak OuU low= 18.16 e(s
Peak Storage= 40018 ft-3
Max Flo Dpth-Wr 1 = 0•0 p
Max Flo Dpth-Wr 2= 1).0 jt

STAGE-STORAGE FUNCTION
COMPUTATION OF STAGE-STORAGE FUNCTION
S Z X 1'
INCR ACCUM
CONTOUR AREA VOL VOL STAGE LN Z LN S Zest 1 Zest 2 Zest 3 Zest 4 Zest 5
(FT^2) (FM) (FT^3) (FT) (FD (FT) (F F) (FT) (FT)
248n 0 0 0
3.5 2838 1342 1342 0.5 -0.693 7202. _ 0.55 0.62 0.72 0.80 0.90
4 3464 1588 2930 1 0.000 7.953 0.97 1.06 1.18 1.29 1.40
5 4658 4061 6991 2 0.693 8.852 1.84 1.93 2.06 2.17 2.29
6 5909 5284 12275 3 1.099 9.419 2.78 2.85 2.95 3.05 3.15
7 7216 6563 18837 4 1.386 9.844 3.80 3.83 3.88 3.95 4.02
7.5 8380 3949 22786 4.5 L504 10.034 4.37 4.36 4.39 443 4.48
8 10001 4645 27431 5 L609 10.219 5.00 4.96 4.94 4.95 JIM
9 11479 10740 38171 6 1.792 IM50 6.37 6.23 6.11 6.04 6.01
9 11478 0 38171 6 1.792 10.550 6.37 6.23 6.11 6.04 6.01
9 11478 0 38171 6 1.792 10.550 6.37 6.23 6.11 6.01 6.01
Y-int= 8.022 Fs= 3048.13
ALL POINTS Slope= 1.365 b= 1.36
R^2- 0.99436
Y-int= 7.899 Is= 269526
ALL POINTS BUT 1 Slope= 1.449 b= 1.45
R^2= 0.99513
Y-int= 7.724 )s= 226231
ALL POINTS BUT 1 &2 Slope= 1.562 b= L. 6
R^2= 0.99663
Y-int= 7.565 )s= 192&60
ALL POINTS BUT 1 &2&3 Slope= 1.659 b= 1.65
R^2= 0,99769
Y-int= 7.397 }s= 1630.42
ALL POINTS BUT I &2&3&4 Slope= 1.759 b= 1.7c
R^2= 0.99955
ABSOLUTE ABSOLUTE ABSOLUTE ABSOLUTE ABSOLUFE
DIFF DIFF DIFF DIFF DIFF
Zest I Zest 2 Zest 3 Zest 4 Zest 5
(FT) (FT) (FT) (Fib (FT)
0.16277 0.06936 0.05939 0.17293 028824
0.22478 0.15272 0.04696 0.05047 0.15144
0.20165 0.17340 0.11519 0.05124 0.02047
0.13321 0.13622 0.11171 0,07135 0 D2001
0.00272 0.01005 0.05816 0.04745 0.02155
AVERAGE= 0.14503 0.11435 0.07829 0.07869 0.10034
SUM= 0.72513 0.57176 0.39142 0.39345 0.50172
Page 1

VET DETENTION BASIN DESIGN
Based on Guidelines Set Forth in NCDEHNR Regulations:
15A NCAC 2H .1000- "Stormwater Management" (12/95)&
"Stormwater Best Management Practices" (11/95)
PROJECT NAME : Bolton Site on Bridges Street
1. Calculate the%Impervious Cover of the Drainage Area
Runoff C CN
Arearwfindned= 0.83 acre 36200 W12 1.00 98
Areamr,nm= 0.00 acre 0 ft^2 0.90 9,1
Areapawmeni= 1.62 acre 70567.24 ft^2 0.92 `."8
Area_em mini= 0.00 acre 0 ft^2 0.85 92
Areareaidmdal= 0.00 acre 0 ft^2 0.52 '
AreaPia)gastc p-m%m-dcm.wikUnirnpr-l.mcd.=a, 0.00 acre 0 f A2 0.35 9
Areapadsemmery= 0.00 acre 0 ft^2 0.25
Areaasg-Iaan-dense-wB= 0.00 acre O ft^2 0.22
Areae'ooded-:parse-crier= 0.00 acre 0 ft^2 0.20 +"
Areanm-bon-demewu= 0.00 acre (1 ft^2 0.17 :?
Areaa+g-imsn-sandy-:na= 1.99 acre 86727 ft^2 0.15 a-
Areanm-t.nm- Qy-wikwwded-deep-finer= 0.00 acre O ftA2 0.10 '15
Areatmm= 4.44 acre
Areapcniow= 1.99 acre
Areaiwmio-= 2.45 acre
%IMPER17OUS=
Composite Rational Runoff Coeff. = 0.59
Composite SCS Cure Number= 87
**Runoff Coefficients and SCS Curve Numbers taken from Malcolm Handouts& "Elements
of Urban Stormwater Design" (Malcolm)

2 Pick Trial Depth and Using Appropriate Table Determine Required Surface Area
Choose Correct Table(Coastal or Not Coastal-With or Without 30'Vegetated Filter)
Trial Depth= 4.5 It %Impervious= 55%
SSREMpVAL:-'NOVEGETATIVE ILTERRE UIRED GOA5TALCOUNTIES
%IMP DEPTH
3 35 '4 4.5 5 5.5 6 6.5 ..7 7.5.
10% 1.3 1 0.8 0.7 0.6
20% 2.4 2 1.8 1.7 1
30% 3.5 3 2.7 2.5
40% 4.5 4
500 5.6 5 4.3 3.9 3.5 3.1 2.7 2.3 1.9 to
60% 7 6 5.3 4.8 4.3 3.9 3.4 2.9 2.4 1.9
70°/u 8.1 7 6 5.5 5 -4.5 3.9 3.4 2.9 2.3
80% 9.4 8 7 6.4 5.7 3.2 4.6 4 3.4 2.8
90% 10.7 9 7.9 7.2 6.5 5.9 5.2 4.6 39 3.3
100% 12 10 8.8 8.1 7.3 6.6 5.8 5.1 4.3 3.6
Required Surface Area to Drainage Area Ratio= 4.3.5
Required Surface Area= 0.19 acre
Required Surface Area = 8117 ft-2
3 Find Volume to be Controlled From th6 I"1Design Storm
Runoff Coefficient(R v) = A5J5 inln R,=0.05+0.009*(1)
Volume= 8788 ft-3
This volume must be draNvn down over a period of 2 to 5 days.
4. Set Crest of Permanent Pool. Bottom of Pond. and Crest of Riser
a.Pick Trial Permanent Pool Elevation and Check Surface Area Against Requirement
Permanent Pool Elev. _ '.
Surface Area(From A UTOCAD) = 9,,700ft-2 OK
Bottom of Pond Elev. = 3
b.Pick Trial Crest of Riser Elevation and Check Volume Against 1"Requirement
CrestRiserEl
Volume Benveen Perm Pool& Crest
of Riser(From Stage-Storage Sheet) = 921/ ftA3 OK

5 Size Drawdown Holes in Riser To Meet Drawdown Time Requirement(Between 2 - 5 days)
CALCULATION OF TIME REQUIRED FOR THE DRAWDOWN HOLES TO DRAIN
I"STORM VOLUME DOWN TO NORMAL POOL
TIME SI Ell= 40 MIN
INITIAL VOLIAIF= 32002 FT,-, (EQUALS NORMAL POOL VOL+ V STORM VOLUME)
DRAWDOWN PIPE
No.holes= '_ No.holes= 0
Di:l(in.)= " I in . Dia(in.)= 0 in
Cl.ELEV.= 5 11 Cl.ELEV.= 8.8 (i
TIME REQUIRED FOR DRAWDOWN= 5160 AfIN 3.58 DA I'S OK
TIME VOL STAGE QROWI QROW2 QTOTAL TIME STAGE
(MIN) (FTA3) (FT) (CFS) (CFS) (CFS) (MIN) (FT)
0 32002 8.47 0.052 0.000 0.052 0 8.47
40 31878 8.45 0.051 0.000 0.051 40 8.45
80 31755 8.44 0.051 0.000 0.051 80 8.44
120 31633 8.42 0.051 0.000 0.051 120 8.42
160 31512 8.41 0.050 0.000 0.050 160 8.41
200 31391 8.40 0.050 0.000 0.050 200 8.40
240 31272 8.39 0.049 0.000 0.049 240 8.39
280 31153 8.37 0.049 0.000 0.049 280 8.37
320 31036 8.36 0.049 0.000 0.049 320 8.36
360 30919 8.35 0.048 0.000 0.048 360 8.35
400 30803 8.33 0.048 0.000 0.048 400 8.33
440 30688 8.32 0.048 0.000 0.048 440 8.32
480 30574 8.31 0.047 0.000 0.047 480 8.31
520 30460 8.30 0.047 0.000 0.047 520 8.30
560 30348 8.28 0.046 0.000 0.046 560 8.28
600 30236 8.27 0.046 0.000 0.046 600 8.27
640 30126 8.26 0.046 0.000 0.046 640 8.26
680 30016 8.25 0.045 0.000 0.045 680 8.25
720 29907 8.23 0.045 0.000 0.045 720 8.23 -
760 29799 8.22 0.045 0.000 0.045 760 8.22
800 29692 8.21 0.044 0.000 0.044 800 8.21
840 29586 8.20 0.044 0.000 0.044 840 8.20
880 29481 8.19 0.043 0.000 0.043 880 8.19
920 29377 8.17 0.043 0.000 0.043 920 8.17
960 29273 8.16 0.043 0.000 0.043 960 8.16
1000 29171 8.15 0.042 0.000 0.042 1000 8.15
1040 29069 8.14 0.042 0.000 0.042 1040 8.14
1080 28968 8.13 0.042 0.000 0.042 1080 8.13
1120 28868 8.12 0.041 0.000 0.041 1120 8.12
1160 28769 8.10 0.041 0.000 0.041 1160 8.10
1200 28671 8.09 0.040 0.000 0.040 1200 8.09
1240 28574 8.08 0.040 0.000 0.040 1240 8.08
1280 28478 8.07 0.040 0.000 0.040 1280 8.07
1320 28383 8.06 0.039 0.000 0.039 1320 8.06
1360 28288 8.05 0.039 0.000 0.039 1360 8.05
1400 28195 8.04 0.039 0.000 0.039 1400 8.04
1440 28102 8.03 0.038 0.000 0.038 1440 8.03

1480 28011 8.02 0.038 0.000 0.038 1480 8.02
1520 27920 8.01 0.037 0.000 0.037 1520 8.01
1560 27830 8.00 0.037 0.000 0.037 1560 8.00
1600 27741 7.99 0.037 0.000 0.037 1600 7.99
1640 27653 7.98 0.036 0.000 0.036 1640 7.98
1680 27566 7.97 0.036 0.000 0.036 1680 7.97
1720 27480 7.96 0.036 0.000 0.036 1720 7.96
1760 27395 7.95 0.035 0.000 0.035 1760 7.95
1800 27311 7.94 0.035 0.000 0.035 1800 7.94
1840 27227 7.93 0.034 0.000 0.034 1840 7.93
1880 27145 7.92 0.034 0.000 0.034 1880 7.92
1920 27063 ' ' 7.91 0.034 0.000 0.034 1920 7.91
1960 26983 7.90 0.033 0.000 0.033 1960 7.90
2000 26903 7.89 0.033 0.000 0.033 2000 7.89
2040 26824 7.88 0.032 0.000 0.032 2040 7.88
2080 26747 7.87 0.032 0.000 0.032 2080 7.87
2120 26670 7.86 0.032 0.000 0.032 2120 7.86
2160 26594 7.85 0.031 0.000 0.031 2160 7.85
2200 26519 7.85 0.031 0.000 0.031 2200 7.85
2240 26445 7.84 0.030 0.000 0.030 2240 7.84
2280 26372 7.83 0.030 0.000 0.030 2280 7.83
2320 26300 7.82 0.030 0.000 0.030 2320 7.82
2360 26228 7.81 0.029 0.000 0.029 2360 7.81
2400 26158 7.80 0.029 0.000 0.029 2400 7.80
2440 26089 7.79 0.029 0.000 0.029 2440 7.79
2480 26020 7.79 0.028 0.000 0.028 2480 7.79
2520 25953 7.78 0.029 0.000 0.028 2520 7.78
2560 25886 7.77 0.027 0.000 0.027 2560 7.77
2600 25821 7.76 0.027 0.000 0.027 2600 7.76
2640 25756 7.76 0.027 0.000 0.027 2640 7.76
2680 25692 7.75 0.026 0.000 0.026 2680 7.75
2720 25630 7.74 0.026 0.000 0.026 2720 7.74
2760 25568 7.73 0.025 0.000 0.025 2760 7.73
2800 25507 7.73 0.025 0.000 0.025 2800 7.73
2840 25447 7.72 0.025 0.000 0.025 2840 7.72
2880 25388 7.71 0.024 0.000 0.024 2880 7.71
2920 25330 7.70 0.024 0.000 0.024 2920 7.70
2960 25273 7.70 0.023 0.000 0.023 2960 7.70
3000 25217 7.69 0.023 0.000 0.023 3000 7.69
3040 25162 7.68 0.023 0.000 0.023 3040 7.68
3080 25108 7.68 0.022 0.000 0.022 3080 7.68
3120 25055 7.67 0.022 0.000 0.022 3120 7.67
3160 25002 7.67 0.021 0.000 0.021 3160 7.67
3200 24951 7.66 0.021 0.000 0.021 3200 7.66
3240 24901 7.65 0.021 0.000 0.021 3240 7.65
3280 24851 7.65 0.020 0.000 0.020 3280 7.65
3320 24803 7.64 0.020 0.000 0.020 3320 7.64
3360 24756 7.64 0.019 0.000 0.019 3360 7.64
3400 24709 7.63 0.019 0.000 0.019 3400 7.63
3440 24664 7.62 0.019 0.000 0.019 3440 7.62
3480 24619 7.62 0.018 0.000 0.018 3480 7.62
3520 24575 7.61 0.018 0.000 0.018 3520 7.61
3560 24533 7.61 0.017 0.000 0.017 3560 7.61
3600 24491 7.60 0.017 0.000 0.017 3600 7.60
3640 24450 7.60 0.017 0.000 0.017 3640 7.60
3680 24411 7.59 0.016 0.000 0.016 3680 7.59

M06-AR-13-00 15:43 FROM: MOFFATT + NICHOL (R) ID: 9197614669 PAGE 1
1/, IOPFATT& NICHOL
E N .0 1 N E. E R a
2209 Century Drive, Suite 500 Telephone: [phone]
Raleigh,North Carolina 27612 Fax: [phone]
FAX COVER SHEET
ATTENTION: Fr, ScdT( ywsb,U SPECIAL INSTRUCTIONS:
,FIRM: —Pjk=— kyl�l. ❑ Urgent
ADDRESS: ❑ Confidential
❑ Please reply
FAX No.: (`jio ) 3�iC> • 2c» ❑ For your review
FROM: (VA For your Info
DATE: 3- t 3 .- r;y ❑ Hard copy to follow
PROJECT:
M&N JOB No.:
MESSAGES:
This fas consists of pages) )including the cover page). Please not J&us ijyou did not
receive oll pages.

MOFFATTN& NICHOL
February 2, 2000 TO
81
R,
North Carolina Department of Environment E C E I V e"
and Natural Resources
127 Cardinal Drive Extension °� (�/[
Wilmington, North Carolina 28405 �.
Atm.: Mr. Scott Vinson PRW# DW--��
Re: Additional Information for Water Quality Permit Documents
for 4206 Bridges Street Ext., Permit No. SW8 991210
Dear Mr. Vinson:
The following revisions were made to the attached drawings and forms as noted in your
letter dated February 1, 2000:
✓1. The permanent pond is dimensioned on the site plan.
—2. The pond section shown on the civil details was revised to indicate all of the
6:1 shelf below the permanent pool. The forebay was revised to show
plantings on a 6:1 slope and across the top of the dike as noted.
3. Two sealed copies of the cover sheet are attached for your use.
4. The forebay location was revised to provide storage volume for 20% of the
permanent pool volume and the forms were revised to reflect the new volume
and the 1" design storm.
5. Original initials were added to the forms where required.
6. The Permit Number appears on this letter and the Sealed Cover Sheet.
Please contact me at [phone] if you have any questions or need additional
information.
Sincerely,
MOFFATT && N�ICHOOL ENGINEERS
Tim Reid, P.E.
Project Engineer
CC: Mr. William Bolton,III(w/copies of all correspondence)
NCDGNR.RevD WQPermi[.Sub.doc
2209 Century Drive, Suite 500, Raleigh, North Carolina 27612 [phone] Fax: [phone]

State of North Carolina A74
• 0
VA
Department of Environment
and Natural Resources W
Wilmington Regional Office NCDENR
James B. Hunt, Jr., Governor NORTH CAROLINA DEPARTMENT OF
ENVIRONMENT AND N/RU RESOURCES:
Bill Holman, Secretary
Division of Water Quality
February 1, 2000 2 -�
Mr. Tim Reid, P.E. U
Moffatt&Nichol Engineers
2209 Century Drive, Suite 500
Raleigh, NC 27605 0
Subject: ACKNOWLEDGMENT OF RECEIPT AND
REQUEST FOR ADDITIOONXL INFORMATION
Stormwater Project No. SW8 991210
4206 Bridges Street Ext.
Carteret County
Dear Mr. Reid:
The Wilmington Regional Office received a Stormwater Management Permit Application for 4206
Bridges Street Ext. on December 8, 1999. 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 dimension the permanent pool of the pond.
2. Place the entire 6:1 sloped vegetated shelf below the permanent pool elevation, i.e. from
elevation 7.5 to 6.5. On the forebay, please include 4 feet of a 6:1 vegetated shelf in addition
to the 2 feet of flat berm. The proposed 2 feet of 4:1 sloped shelf will not meet the
requirements.
3. Please include a set of calculations for the wet detention pond that have been sealed,signed and
dated. A cover sheet for the calculations already submitted would suffice.
4. Please redesign the forebay to hold approximately 20%of the permanent pool volume only. We
know that the supplement form directions can be a bit misleading. Please make any corrections
to the original forms that are included with this letter.
5. Please add your hand written initials along side the typed initials on both the application,
SWU-101, and supplement form, SWU-102.
6. Please reference the project number above on all correspondence.
127 Cardinal Dr. Ext.,Wilmington,North Carolina 25405 Telephone [phone] FAX [phone]
An Equal Opportunity Affirmative Action Employer 50% recycled/10% post-consumer paper

Mr. Reid
February 1, 2000
Stormwater Project No. SW8 991210
----------------------------------------------
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 March 1, 2000, or the application will be
returned as incomplete. The return of a project will necessitate resubmittal of all required items, including the
application fee.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.
If you have any questions concerning this matter please feel free to call me at [phone].
Sincerely,
Scott Vinson
Environmental Engineer
RSS/sav: S:\WQS\STORMWAT\ADDINFO\991210.FEB
cc: Wilmington Regional Office
William Bolton, Windlass II, LLC

State of North Carolina
Department of Environment
and Natural Resources
Wilmington Regional Office NCDENR
James B. Hunt, Jr., Governor NORTH Ca ouNA DE THE OF
ENVIRONMENT AND NATURAL RESOURCE$
Bill Holman, Secretary
Division of Water Quality
February 1, 2000
Mr. Tim Reid, P.E.
Moffatt&Nichol Engineers
2209 Century Drive, Suite 500
Raleigh, NC 27605
Subject: ACKNOWLEDGMENT OF RECEIPT AND
REQUEST FOR ADDITIONAL INFORMATION
Stormwater Project No. SW8 991210
4206 Bridges Street Ext,
Carteret County
Dear Mr. Reid:
The Wilmington Regional Office received a Stormwater Management Permit Application for 4206
Bridges Street Ext. on December 8, 1999. 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 dimension the permanent pool of the pond.
2. Place the entire 6:1 sloped vegetated shelf below the permanent pool elevation, i.e. from
elevation 7.5 to 6.5. On the forebay,please include 4 feet of a 6:1 vegetated shelf in addition
to the 2 feet of flat berm. The proposed 2 feet of 4:1 sloped shelf Will not meet the
requirements.
3. Please include a set of calculations for the wet detention pond that have been sealed,signed and
dated. A cover sheet for the calculations already submitted would suffice.
4. Please redesign the forebay to hold approximately 20%of the permanent pool volume only. We
know that the supplement form directions can be a bit misleading. Please make any corrections
to the original forms that are included with this letter.
5. Please add your hand written initials along side the typed initials on both the application,
SWU-101, and supplement form, SWU-102.
6. Please reference the project number above on all correspondence.
127 Cardinal Dr.Ext.,Wilmington,North Carolina 28405 Telephone [phone] FAX [phone]
An Equal Opportunity Affirmative Action Employer 50% recycled/10% post-consumer paper

Mr. Reid
February 1, 2000
Stormwater Project No. SW8 991210
----------------------------------------------
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 March 1, 2000, or the application will be
returned as incomplete. The return of a project will necessitate resubmittal of all required items, including the
application fee.The Division is allowed 90 days from the receipt of 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.
If you have any questions concerning this matter please feel free to call me at [phone].
Sincerely,
Scott Vinson
Environmental Engineer
RSS/sav: S:\WQS\STORMWAT\ADDINFO\991210.FEB
cc: Wilmington Regional Office
William Bolton, Windlass II, LLC

DETAILED NARRATIVE OF THE STORMWATER MANAGEMENT PLAN
FOR
Bolton Corporation—4206 Bridges Street Extension
A centralized service facility for Bolton Corporation, a mechanical contracting firm, is proposed
in Morehead City,NC. The site is bounded by Peletier Creek and Bridges Street Extension and is
to be developed by Windlass IL LLC for Bolton Corp. The total area of the tract is 4.441 acres
with the current building,parking and wet detention pond impacting 2.46 acres of the site. The
site has the potential for a maximum build-out of 2.45 acres of impervious area in the future and
the permit and wet detention pond have been sized to accommodate this future impervious area
construction. The future construction would also be developed for commercial use. None of the
existing wetlands will be impacted with the proposed construction although a 2000 square foot
wetland reclamation area is being incorporated into the site for previous work associated with
extending a drainage pipe. This reclamation is being coordinated with the US Army Corps of
Engineers.
The fully developed site will consist of buildings,parking, streets, laydown areas and a wet
detention pond. The entrance to the site will be from Bridges Street Extension There is one
drainage basin on the site. The proposed wet detention pond will treat all of the proposed
impervious area(2.45 acres). The eastern boundary roof drain system has been collected and the
remaining site has been graded to direct all water from impervious areas into the single catch
basin located midway along the northern boundary. The catch basin and outlet pipe have been
sized to accommodate the future expansion of the impervious areas to its maximum build-out.
WET DETENTION POND
The Wet Detention Pond treats all impervious runoff from the site. The anticipated seasonal high
water table near the pond is estimated to be elevation 3.1 which is the high water elevation for the
portion of Peletier Creek that borders the western and northern boundaries. Peletier Creek is
classified as SB waters and it flows into the Bogue Sound.
The outlet into the pond is lined with riprap and the invert is set so that the flow into the pond is
submerged during large events. The bottom elevation of the pond is 3.0. Once the collected flow
1 enters the pond via the pipe system, it must flow over the forebay with a top elevation of 7.5. The
1 fore will be constructed with a 27 1 front slope protected with Class B stone a 2- . wide earth
top shelf and a 4:1 back slope. The 2-ft. wide top shelf an . of the 4:1 backslo � Dle—
p ante wr cattails to assist m nutnen remova . r e runoffows over the forebay it will
exr a pop o the pond outlet structure. The crest of the outlet structure(Temporary Pool
Level)is at elevation 8.75. The pond outlet structure discharges into Peletier Creek along the
western boundary through a 48"CMP riser with a 18"outlet barrel. The areas above the normal
pool elevation will be grassed to prevent erosion and to provide some filtering of the system
during elevated water levels. The pond outlet utilizes two 1"holes pipes placed at permanent pool
elevation 7.5 as indicated on the details in order to drain the pond down to the normal pool
elevation. The drawdown to this elevation takes approximately 3.8 days. The drawdown inlet
pipes are protected from debris by a screen mesh. The outlet riser is protected with a trash rack.
The pond has a 6:1 perimeter shelf located between elevations 8.0 and 7.0 to assist in the growth
of vegetation and the interior slopes are 3:1.
stofmnam ivadoc

Outlet
\ P-1
-1
I`
Bolton Corp - 4206 Bridges Street
Inlet 1 is sized to accommodate full build-out of 2 .45 acres of
total impervious area. All new drainage can be either piped or
directed by surface flow into inlet 1 for transmission to the wet
detention pond . Maximum tailwater elevation of 9.4 was used
for the design .
Project Engineer:TRR
. Project Title:Bolton Corp-4206 Bridges Street SIOnnCAD v1.0
w:\haeslad\shnc\bollont.atnl Moffatt&Nichol Engineers Page 1 of 1
11/30199 12:41;08 PM Naeslad Methods,Inc. 37 Brookside Road Waterbury,CT 06708 [phone]

Rainfall Table
Return Periods
Durations 2 year 5 year 10 year 25 year 50 year 100 year
5 min 5.88 6.67 7.28 8.23 8.97 9.72
10 min 5.03 5.71 6.63 7.07 7.72 8.36
15 min 4.32 4.91 5.38 6.08 6.64 7.20
30 min 3.20 4.10 4.60 5.30 6.00 6.40
60 min 2.00 2.50 2.90 3.40 3.80 4.20
120 min 1.25 1.60 1.80 2.10 2.35 2.65
180 min 0.92 1.15 1.33 1.58 1.75 1.92
360 min 0.54 0.71 0.83 0.95 1.08 1.17
720 min 0.31 0.44 0.50 0.56 0.65 0.73
1440 min 0.19 0.25 0.29 0.33 0.38 0.42
Rainfall Intensities are in (in/hr)
Project Title:Bolton Corp-4206 Bridges Street Project Engineer:TRR
w,VulUskpl\rina:Un111on1 still Molfih 3 Nichol Engineers Sto"CAO v1.0
11/30199 12:41:35 PM Haestad Methods,Inc. 37 Brookside Road Waterbury.CT 06708 [phone] Page 1 of 1

Intensity Duration Frequency Curve _ O 2years
10.01 . .. .... .. + 5 years
A 10 years
❑ 25 years
9.0' 0.......... .._. ♦ 10 y rs
• 50 years
ea
8.0i
7.0
i
6.0
s
c
5.0 _....
N
C
C
4.0
3.0
2.01
I
1.01 _ --
0.0
0.0 200.0 400.0 600.0 800.0 1000.0 1200.0 1400.0 1600.0
Duration (min)
Project Engineer TRR
Iho)w.t 11110.1101,111 Ce1p -•IL`tl6 0,10 1os::h enl StormCAD v1.0
w1haestaMsir"Obollont.sen Moffatt R Nichol Engineers Page 1 of 1
11/;10N\I 1::A 1,4; I'M I Uvos0al MalhoJv,Inc. ;t/IheeFsalo Itwul WulciUury,C I'067011 (203)75G-1GGG

------------------ Beginning Calculation Cycle -------------------
Discharge : 16. 54 cfs at node I-1
Discharge : 16 . 34 CES at nodo Outlet
Beginning iteration 1
Discharge : 16 . 54 cfs at node I-1
Discharge: 16. 34 cfs at node Outlet
Discharge Convergence Achieved in 1 iterations : relative error: 0 . 0
Information: P-1 Surcharged condition
--------------------- Calculations Complete ----------------------
** Analysis Options **
Friction method: Manning ' s Formula
HGL Convergence Test : 0 . 001000
Maximum Network Traversals : 10
Number of Pipe Profile Steps : 10
Discharge Convergence Test : 0 . 001000
Maximum Design Passes : 3
----------------- Network Quick View ------------------------
I Hydraulic Grade I
Label I Length I Size I Discharge I Upstream I Downstream I
P-1 134 . 00 30 inch 16 . 54 9. 62 9 . 40
1 ----------- Elevations ---------------- I
Label I Discharge I Ground I Upstream HGL I Downstream HGL I
I-1 16 . 54 10 . 00 9. 62 9 . 62
Outlet 16. 34 9 . 50 9. 40 9 . 40
Elapsed: 0 minute (s) 0 second (s)
Project Thto:Bolton Corp•4206 Bridges Street Project Engineer:TRR
wtUmesladlsbncW01lon 1.sb» Moffatt 8 Nichol Engineers StormCAD 0.0
11130199 12:41:19 PM Haestad Methods,Inc. 37 Brookside Road Waterbury,CT 06708 [phone] Page 1 of 1

Outlet: Outlet Inlet: 1-1
Rim: 9.50 ft Rim: 10.00 ft
Sump: 6.00 ft .. Sump: 6.,50 #0.00
9.50
_ 9.00
- 8.50
8.00 Elevation ft
7.50
7.00
6.50
6.00
----------------------
0+00 0+20 0+40 0+60 0+80-,�+00 1 +20 1 +40
Station ft Pipe: P-1
Up Invert: 6.50 ft
Dn Invert: 6.00 ft
Length: 134.00 ft
Size: 30 inch
Project Engineer:TRR
Project Title:nolton Corp-4906 Rridgns Street
W;\haalladUUnc\bollon 1,sinl Moffatt A Nichol Engineers StonP v1.0
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11/30MS 12:45:01 PM Haestad Methods.Inc. 37 Brookside Road Waterbury,CT 06708 [phone] 1 of 7

Pipe Report
Pipe Jpstrea ownstrea Inlet Inlet Inlet Total System ischarq Length onstructe ection oughnes apacit pstrea ownstrea pstrea ownstrea pstrea ownstrea pstrea ownstrea
Node Node Area C CA CA Intensit (cfs) (ft) Slope Size (cfs) Invert Invert Ground Ground Cover Cover HGL HGL
(acres) (acres)(acres) (in/hr) (ft/ft) levatio Elevation levatio Elevation M. (ft) (ft) (ft)
(ft) (ft) (ft) III)
P-1 1-1 Outlet 2.45 0.92 2.25 2.251 7.281 16.54 34.00 0.003731 30 inct 0.0131 25.051 6.501 6.001 10.001 9.501 1.00 1.00 9.621 9.40
Project Title:Bolton Corp-4206 Bridges Street Project Engineer:TRR
\V;V1t1®AlA(1\A(O1C\b0110n 1,&tm Moffatt&Nichol Engineers Sto"CAD v1.0
11/30M9 12:42:35 PM Hoestad Methods,Inc. 37 Brookside Road Waterbury,CT 06708 [phone] Page 1 of 1

DOT Report
Pipe-Node Inlet Inlet Tot Ground -Slope- -Section- Section Length V avg Sys -HGL--EGL- Cap S
Up A CA CA Up Energy ischarg Shape (ft) (ft/s) Flow Up Up (cfs) (ft/ft)
Dn (acres)(acres)(acres) Dn onstructe Capacity Size Time Dn Dn
(ft) (ft/ft) (cfs) (min) (ft) (ft)
P-1 I.1 2.45 2.25 2.25 10.00 0.001626 16.54 Circular 34.00 3.37 5.00 9.62 9.79 5.05 .003731
Outlet 9.50 0.003731 25.05 30 Inch 9.40 9.58
Project Engineer:TRR
Project Title:Bolton Corp-4206 Bridges Street
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luluslad\yUn4\ledlonI On111'30199 12:42:54 PM Haestad Methods,Inc. 37 Brookside Road Waterbury,CT 06708 [phone] - Page 1 of 1