SW8020830_HISTORICAL FILE_20030303

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO. I SW8 pZpg 30
DOC TYPE
❑ CURRENT PERMIT
❑ APPROVED PLANS
® HISTORICAL FILE
❑ COMPLIANCE EVALUATION INSPECTION
DOC DATE 2 c) c,3 0 3 0 3
YYYYMMDD

Michael F. Easley, Governor
William G. Ross, Jr., Secretary
North Carolina Department of Environment and Natural Resources
March 3, 2003
Mr. Patrick Paul Joyce, Manager
Fort Benjamin Commons, LLC
PO Box 190
Newport, NC 28570
Alan W. Klimek, P.E., Director
Division of Water Quality
Wilmington Regional Office
Subject: Stormwater Permit No. SW8 020830
Newport Triangle Commercial Subdivision
High Density Subdivision Project
Carteret County
Dear Mr. Joyce:
The Wilmington Regional Office received a complete Stormwater Management Permit
Application for Newport Triangle Commercial Subdivision on January 2, 2003. 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 020830, dated March 3, 2003, for the construction of the project, Newport Triangle
Commercial Subdivision.
This permit shall be effective from the date of issuance until March 3, 2013, 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 folio —wing
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
Linda Lewis, or me at [phone].
Sincerely,
Rick Shiver
Water Quality Regional Supervisor
RSS/:arl S:\WQS\STORMWAT\PERMIT\020830.MAR03
cc: Ron Cullipher, P.E.
Town of Newport Building Inspections
Linda Lewis
Wilmington Regional Office
Central Files
AAWA
NCD
N.C. Division of Water Quality Cardinal Drive Extension Wilmington, N.C. 28405 [phone] Fax [phone] Customer Service
800-623-7748

State Stormwater Management Systems,
Permit No. SW8 020830
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
Fort Benjamin Commons, LLC
Newport Triangle Commercial Subdivision
Carteret County
0916: 17�i ";i-M
construction, operation and maintenance of 3 wet detention ponds 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 3, 2013 and shall be subject
to the following specified conditions and limitations:
I. DESIGN STANDARDS
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 subdivision is permitted
for 10 lots, each allowed a maximum amount of built -upon area as described on
Attachment B to the application and in Section II.13 of this permit.
Approved plans and specifications for this project are incorporated by reference and are
enforceable parts of the permit.
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.
2

State Stormwater Management Systems
Permit No. SW8 020830
DIVISION OF WATER QUALITY
PROJECT DATA SHEET
Project Name:
Newport Triangle Commercial Subdivision
Permit Number:
SW8 020830
Location:
Carteret County
Applicant:
Mr. Patrick Paul Joyce, Manager
Mailing Address:
Fort Benjamin Commons,
LLC
PO Box 190
Newport, NC 28570
Application Date:
January 2, 2003
River Basin / Receiving Stream:
White Oak / Snows Swamp Branch
Index Number:
WOK03 21-12
Classification of Water Body:
"C"
Pond Number:
1 2
Design Storm:
1.0" 1.0"
1.0"
Drainage Area, acres:
10.62 6.23
16.22
Ofsite:
10.62 6.23
16.22
Offsite:
0 0
0
Total Impervious Surfaces, ft2:
416,399 244,360
636,003
Lots 1, 2 & 3, ft2:
405,399 0
0
Lots 4 & 5, ft2:
0 190,000
0
Lots 6, 7, 8 9, and 10, ft2:
0 0
586,003
Roads/Parking, ft2
11,000 30,000
50,000
Offsite, ft2:
0 0
0
Pond Depth, feet:
7.0 7.0
7.0
Permanent Pool Elevation, FMSL:
29.50 29.00
23.00
OPermitted Surface Area, ft2:
21,554 18,981
31,575
Permitted Storage Volume, ft3:
34,031 20,792
52,702
Temporary Storage Elevation, FMSL:
30.90 30.00
24.50
OControlling Orifice:
2.50" y 2.00" cp
3.00" (p
OArea to be provided at the permanent pool elevation.
©Draw down of the 1" storage volume must occur within 2-5 days.
3

State Stormwater Management Systems
Permit No. SW8 020830
H. SCHEDULE OF COMPLIANCE
1. No homeowner/lot owner/developer shall fill in, alter, or pipe any drainage feature (such
as swales) shown on the approved plans as part of the stormwater management system
without submitting a revision to the permit and receiving approval from the Division.
2. The permittee is responsible for verifying that the proposed built -upon area for the entire
lot, including driveways and sidewalks, does not exceed the allowable built -upon area.
Once the lot transfer is complete, the built -upon area may not be revised without approval
from the Division of Water Quality, and responsibility for meeting the built -upon area
limit is transferred to the individual property owner.
3. If an Architectural Review Committee (ARC) is required to review plans for compliance
with the BUA limit, the plans reviewed must include all proposed built -upon area. Any
approvals given by the ARC do not relieve the homeowner of the responsibility to
maintain compliance with the permitted BUA limit.
4. 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 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, acquisition, or sale of the project area. The project area is
defined as all property owned by the permittee, for which Sedimentation and
Erosion Control Plan approval was sought.
f. Filling in, altering, or piping of any vegetative conveyance shown on the approved
plan.
5. The Director may determine that other revisions to the project should require a
modification to the permit.
6. 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.
The stormwater management system shall be constructed in it's entirety, vegetated and
operational for its intended use prior to the construction of any new built -upon surface
within the project, including the lots.
8. During construction, erosion shall be kept to a minimum and any eroded areas of the
system will be repaired immediately.
9. 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.
10. 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.
4

State Stormwater Management Systems
Permit No. SW8 020830
11. The permittee shall at all times provide the operation and maintenance necessary to assure
that all components of the permitted stormwater system function 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 structures, orifice, catch basins and piping.
g. Access to all components of the system must be available at all times.
12. 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.
13. Prior to the sale of any lot, the following deed restrictions must be recorded:
a. The following covenants are intended to ensure ongoing compliance with State
Stormwater Management Permit Number SW8 020830, as issued by the Division
of Water Quality under NCAC 2H.1000.
b. The State of North Carolina is made a beneficiary of these covenants to the extent
necessary to maintain compliance with the Stormwater Management Permit.
C. These covenants are to run with the land and be binding on all persons and parties
claiming under them.
d. The covenants pertaining to stormwater may not be altered or rescinded without
the express written consent of the State of North Carolina, Division of Water
Quality.
e. Alteration of the drainage as shown on the approved plans may not take place
without the concurrence of the Division of Water Quality.
f. The maximum built -upon area per lot is, in square feet, as follows:
Lot 1 43,200 Lot 4 110,000 Lot 7 107,750
Lot 2 63,600 Lot 5 80,000 Lot 8 75,000
Lot 3 298,599 Lot 6 94,250 Lot 9 61,500
Lot 10 247,503
This allotted amount includes any built -upon area constructed within the lot
property boundaries, and that portion of the right-of-way between the front lot line
and the edge of the pavement. Built upon area includes, but is not limited to,
structures, asphalt, concrete, gravel, brick, stone, slate, coquina and parking areas,
but does not include raised, open wood decking, or the water surface of swimming
pools.
g. All runoff on the lot must drain into the permitted system. This may be
accomplished through providing roof drain gutters which drain to the street,
grading the lot to drain toward the street, or grading perimeter swales and
directing them into the pond or street. Lots that naturally drain into the system are
not required to provide these measures.
14. Decorative spray fountains will not be allowed in the stormwater management facilities.

' State Stormwater Management Systems
Permit No. SW8 020830
15. A copy of the recorded deed restrictions must be submitted to the Division within 30 days
of the date of recording the plat, and prior to selling lots. The recorded copy must bear the
signature of the Pennittee, the deed book number and page, and stamp/signature of the
Register of Deeds.
Decorative spray fountains will not be allowed in the stormwater treatment system
16. Permanent seeding requirements for the stormwater control must follow the guidelines
established in the North Carolina Erosion and Sediment Control Planning and Design
Manual.
17. Prior to transfer of the permit, the stormwater facilities must be inspected by DWQ
personnel, and determined to be in compliance with all permit conditions. Any items not
in compliance must be repaired or replaced to design condition prior to the transfer.
Records of maintenance activities performed to date will be required.
18. 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.
19. Built upon area includes, but is not limited to, structures, asphalt, concrete, gravel, brick,
stone, slate, coquina and parking areas, but does not include raised, open wood decking,
or the water surface of swimming pools.
M. GENERAL. CONDITIONS
This permit is not transferable except after notice to and approval by the Director. In the
event there is a desire for the facilities to change ownership, or there is a name change of
the Permittee, a "Name/Ownership Change Form" must be submitted to the Division of
Water Quality accompanied by appropriate documentation from the parties involved,
including as may be required, but not limited to, a deed of trust, recorded deed
restrictions, Designer's Certification and a signed Operation and Maintenance plan. The
project must be in good standing with DWQ. The approval of this request will be
considered on its merits and may or may not be approved.
2. The permittee is responsible for compliance with the terms and conditions of this permit
until such time as the State approves the transfer request.
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.
4. 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.
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.
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.
Permittee grants permission to staff of the DWQ to access the property for the purposes
of inspecting the stormwater facilities during normal business hours.
2

State Stormwater Management Systems
Permit No. SW8 020830
The permittee shall notify the Division of any name, ownership or mailing address
changes within 30 days.
9. 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.
Permit issued this the 3rd day of March, 2003.
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
✓� Alan W. Klimek, P.E., Director
U Division of Water Quality
By Authority of the Environmental Management Commission
Permit Number SW8 020830

(iFM USE ONLY
ate Received
Fee Paid
Permit Number
i Z
O
8 U add U 1
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
This form may he photocopied for use as an original
I. GENERAL INFORMATION
1. Applicants name (specify the name of the corporation, individual, etc. who owns the project):
t`�rf T-A--h)&rtni ✓t Ct7rtn ✓tnoytS- L. L. C
2. Print Owner/Signing Official's name and title (person legally responsible for facility and compliance):
Pat►^ i (-,K fauyvce MZn2ciet-
3. Mailing Address for person listed in item 2 above:
p_o n Iqv
City: NeWpayl State: NL zip: 285-70
Telephone Number: ( 2S'Z j 223 - 3171
4. Project Name (subdivision, facility, or establishment name - should be consistent with project name on plans,
specifications, letters, operation and maintenance agreements, etc.):
5. Location of Project (street address):
Fl►vY 70 Wts+ 4 edsf
City:
6. Directions to project (from nearest major intersection):
County: Ca Y +!E� tg*
c Qt-u n.
7. Latitude: NHLia 41 Longitude: W ]10 51. LA S t of project
8. Contact person who can answer questions about the project:
Name: T LL'FY j c4< Pa U I Tv CP Telephone Number: (2S2) Z2 3 - 3 171
II. PERMIT INFORMATION:
1. Specify whether project is (check one): X New Renewal Modification
Fonn 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 High Density Redevelop General Permit Other
4. Additional Project Requirements (check applicable blanks):
_CAMA Major %-Sedimentation/Erosion Control _404/401 Permit _NPDES Stotmwater
Information on required state permits can be obtained by contacting the Customer Service Center at
1-877-623-6748.
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 sttormwater management for the project.
Wei- Gas t'y z,
2. Stormwater runoff from this project drains to the w►n i tf Ux k River basin.
3. Total Project Area: 34.22 acres
5. How many drainage areas does the project have? S
4. Project Built Upon Area: ill - `l 9 %
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.
Receiving Stream Name
,.. .:vo-
tfi'�'!"','� . w4D
Vy
Receiving Stream Class
Drainage Area
6FZ—I
I 51 1 S
Existing Impervious* Area
Proposed Impervious" Area
L} S F
Li 4 3(,p S F
% Impervious° Area (total)
9 O' ,
490
Streets
On -site Sidewalks
Other on -site
Impervious area is defined as the built upon area including, but not limited to, buildings, roads, parking areas,
sidewalks, gravel areas, etc.
DAi}3
tree
4HKJvw#,1�A
Fonn SWU-101 Version 3.99 Page 2 of 4

A
Newport Triangle
Attachment KMiewabie 'rut fmpery-Amms -A—ma
p�
m
Receiving Stream Name
Snows Swamp Branch
Receiving Stream Class
C
Drainage Area
706,670 sf
Existin Impervious
0 sf
Proposed Impervious
636,003 sf
% Impervious Area total
90%
On -Site Buildings
586,003 sf
On -Site Streets
50,000 sf
On -Site Parkin
On -Site Sidewalks
Other on -sire
Off -site
Total: 636,003 sf

7. How was the off -site impervious area listed above derived? N I A
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
changed or deleted without the consent of the State.
2. No more [han6e2 H t'�i[ KrtCdoUare 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. 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 [phone] 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 MCI
• One copy of the applicable Supplement Form(s) for each BMP
• Permit application processing fee of $420 (payable to N
• Detailed narrative description of stotormwater treatment/manag/manag
ement
• 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 your
behalf, please complete this section.
Designated agent (individual or firm): �'Y(XCA �V1G� i ✓LCC� "PA.
V:3 -k VkWJ 24-
city: Mb rir,Vlea A G av State: N_ Zip: 295 S 7
Phone: (252 ) 2�-1-YATI Fax: (Z52 1 2* - Lk)g3
VIII. APPLICANT'S CERTIFICATION
I, (print or type name ofperson listed in General Information, item 2) Pa+r, (,K Pa u.1 Tovice
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 coynts will be recorded, and that the proposed project complies with the requirements of 15A
NCAC 2H .101 ) n - r1 n A
Date: a L3 0
Form SW-101 Version 3.99 Page 4 of 4

Newport Triangle
Attachment B
Allowable Lot Impervious Area
Lot #
Allowable Impervious
1
43,200 sf
2
63,600 sf
3
298,599 sf
4
110,000 sf
5
80,000 sf
6
94,250 sf
7
1 107,750 sf
8
75,000 sf
9
61,500 sf
10
247,503 sf

—iy—zez i:ibAM FROM JERRY BALLARD INS 252 727 5400
V
LJ
AN 0 2 2003
5f,0 80 20 8 30
STATE OF NORTH CAROLINA
COUNTY OF CARTERET
E000 9 0 Nbp
PROTECTIVE COVENANTS FOR
FORT BENJAMIN LANDING
THESE PROTECTIVECOVENANTS, dazed for purposes of reference
only this 20ch day of December, 2002, are made by Fort Benjamin
Commons, LLC, a North Carolina Limited Liability Company
("Declarant").
R E C I T A L S
Declarant is the owner of real property generally known, as
Fort Benjamin Commons, described in that plat recorded in Map Book
Page , Carteret County Registry, ("Property"). The
Property has been subdivided into ten (lo) lots, which are intended
to be utilized for non residential purposes.
As required by the State of North Carolina, Declarant has
applied for, and been issued, a North Carolina State Stormwater
Permit by the Division of Water Quality. The permit issued is
Permit .Number SW8 020830 (`Permit"). The Permit imposes certain
restrictions on the use of the Property andlots within the
Property, including, but not limited to, a limitation on allowable
impervious surface on each lot. The permit further requires that
Protective Covenants be recorded, encumbering the Property,
en.Eorcing the provisions of the Permit_
It is therefore the desire and intention of Declarant, as
required by the state of North Carolina, for its benefit and for
the,benefiz of the purchaser of each lot within the Property, and
with the objective of preserving the value of each lot, and to
control stormwater runoff on each lot and all the Property, to
restrict the utilization of and improvements upon the property in
accordance with the terms and provisions of the Permit, as set out
more fully hereinafter. Therefore, Declarant hereby subjects the
Property to the provisions of these Protective Covenants, for the
P. 2
Received 12-19-02 09:54am From-252 727 5400 To-JOYCE & ASSOCIATES Pace 02

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STROUD ENGINEERING, P.A.
Hestron Plaza Two
151•A Hwy. 24
MOREHEAD CITY, NC 28557
[phone]
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❑ Shop drawings ❑Prints ❑Plans ❑Sam ersr ation
❑ Copy of letter El Change order ❑
COPIES
DATE
NO.
DESCRIPTION
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THESE ARE TRANSMITTED as checked below:
❑ For approval
❑ For your use
❑ As requested
For review and comment
❑ FOR BIDS DUE
REMARKS
❑ Approved as submitted ❑ Resubmit copies for approval
❑ Approved as noted ❑ Submit copies for distribution
❑ Returned for corrections ❑ Return corrected prints
L
❑ PRINTS RETURNED AFTER LOAN TO US
COPY TO
SIGNED: 4=eZ&_
O enclosures are not as noted, kindly notify us at on

STROUD ENGINEERING, P.A.
Hestron Plaza Two
151-A Hwy. 24
MOREHEAD CITY. NC 28557
[phone]
TO NU_)t-NR Wad' Qula 1r4�
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WE ARE SENDING YOU
❑ Shop drawings
❑ Copy of letter
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THESE ARE TRANSMITTED as checked below:
❑ For approval
❑ For your use
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❑ FORBIDS DUE
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❑ Approved as submitted
❑ Approved as noted
❑ Returned for corrections
❑ Resubmit copies for approval
❑ Submit copies for distribution
❑ Return corrected prints
❑ PRINTS RETURNED AFTER LOAN TO US
COPY TO
SIGNED:
It enclosures are not as noted, kindly notify us at on .

STROUD ENGINEERING, P.A.
CONSULTING ENGINEERS
HESTRON PLAZA TWO
151-A HWY. 24
MOREHEAD CITY, NORTH CAROLINA 28557
[phone]
December 20, 2002
Mrs. Linda Lewis
NCDENR
127 Cardinal Drive Ext.
Wilmington, NC 28405
RE: Newport Triangle — SW8 020830
REQUEST FOR ADDITIONAL INFORMATION
Dear Linda,
RECEIVED
DEC 2 3 2002
PROJ # 5w5 "Z(JC�30
Please find enclosed, the additional information requested in the letter dated November 12, 2002 for the
project referenced above.
1. The deed restrictions are currently being drafted. A copy will be forwarded to you upon completion.
2. The developer is leasing the property that J & S Landscape is occupying presently. A note has been
placed on Sheet 2 of 6 stating that no additional development shall be allowed on lots 3 & 4 until the
permitted stormwater pond and collection system to the pond is constructed.
3. All existing impervious for J&S Landscape has been labeled either with dimensions or actual square
footages.
4. The ingress/egress easement is an inverted crown and the arrows indicate the percent grade with the
direction of flow toward the drop inlet. The entire inverted ingress/egress does not drain to the drop
inlet. As shown, there is a high point approximately 66' from the proposed drop inlet. The runoff to
the south east of this drop inlet will exit through a flume at the end of the ingreWegress easement,
into the proposed ditch.
5. Additional calculations have been provided to ensure that the pond will not short circuit. Slight
adjustments to the placement of the overflow structures have been corrected to prevent the short
circuiting of the system. (sheets 5A and 9A of 10)
6. Cattails have been specified on each pond sheet (see the detail, Wet Detention Pond Typical Cross
Section) for the wetland species to be planted. The banks of the pond above permanent pool shall
follow the seeding schedule noted. Additional wetland species have also been identified in the
seeding schedule.
7. The developer is aware of the significance of the grading plan, which lot drains to which pond, and
any deviation from this plan would require a modification to the permit.
8. The built upon area for Pond 2 shall be 244,360 sf. Corrections have been made to both the drawings
and the application (please see attached).
9. A revised sheet 2 of 4 of the SWU-101 has been revised and is attached as requested.
10. Sheet 2 of 10 of the calculations have been revised to reflect the correct surface areas.
If you have any additional questions or concerns, please do not hesitate to contact me.
Sincerely,
GingerTinner�
107 COMMERCE ST. HESTRON PLAZA TWO
SUITE B 102-D CINEMA DRIVE 151-A HWY. 24
GREENVILLE, NC 27858 WILMINGTON, NC 29403 MOREHEAD CITY, NC 28557
[phone] [phone] [phone]

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Dec 12 02 02:53p STROUD ENGINEERING PA 252 247 4098
P.2
STROUD ENGINEERING, P.A.
CONSULTING ENGINEERS
HESTRON PLAZA TWO
151-A HWY. 24
MOREHEAD CITY, NORTH CAROLINA 26557
[phone]
December 12, 2002
Ms. Linda Lewis
NCDENR
127 Cardinal Drive Ext.
Wilmington, NC 28405
via fax: [phone]
RE: Newport Triangle — SW8 020830
Ms. Lewis,
I would like to request a week time extension for submittal of the additional
information required to complete your review for the above referenced project. If you
have any questions or concerns, please do not hesitate to call.
Sincerely,
�&41 �
/ Ging�TLer
107 COMMERCE ST. HESTRON PLAZA TWO
SUITE B 102-D CINEMA DRIVE 151-A HWY. 24
GREENVILLE. NC 27858 WILMINGTON. NC 28403 MOREHEAD CITY, NC 28557
[phone] [phone] [phone]

Michael F. Easley, Governor
William G. Ross, Jr., Secretary
North Carolina Department of Environment and Natural Resources
Alan W. Klimek, P.E., Director
Division of Water Quality
Wilmington Regional Office
November 12, 2002
Mr. Patrick P. Joyce, Manager
Fort Benjamin Commons, LLC
PO Box 190
Newport, NC 28570
Subject: REQUEST FOR ADDITIONAL INFORMATION
Stormwater Project No. SW8 020830
Newport Triangle
Carteret County
Dear Mr. Joyce:
The Wilmington Regional Office received a Stormwater Management Permit Application
for Newport Triangle on August 28, 2002. A preliminary review of that information has
determined that the application is not complete. The following information is needed to continue
the stormwater review:
Please provide a copy of the proposed deed restrictions and covenants for the
subdivision which includes all required conditions and limitations as indicated in
Sections I and VI of the attached document. A permit will not be issued without
this document. It is not acceptable to simply fill in the blanks on the 3 page
document and send it back to me. The required statements must be included in the
overall restrictions and covenants for the subdivision that will be recorded later.
2. Once the high density permit is written, any future development within J & S
Landscape becomes subject to the permit. It is logistically impossible for the
Division to track a high density project where a lot is allowed to develop as low
density until the 30% limit is reached, and then be collected and treated in a pond.
If someone other than you owns the 3.85 acre J & S Landscaping Business, it will
be relatively easy to write a separate low density permit for that area. This will
require a separate application from the owner. If you own it, then the permit must
be written with a condition that no additional development (even if low density
will be maintained) will be allowed on Lots 3/4 until such time as the stormwater
pond(s) and the collection system for that pond is in place.
3. Please dimension the existing gravel, brick walk, greenhouse, and sales building
on Lots 3/4.
4. The ingress/egress easement appears to be an inverted crown, based on the
drawing and on the catch basin located in the middle of the pavement, but the
drainage arrows indicate a normal crown section. Please clarify.
For Ponds 2 and 3, where you have provided calculations for each forebay, please
provide an additional calculation of the individual required pond surface area and
volume needed and make sure this amount is provided between the forebay and
the outlet structure to prevent short-circuiting.
N.C. Division of Water Quality 127 Cardinal Drive Extension Wilmington, N.C. 28405 [phone] Fax [phone] Customer Service
800-623.7748

Mr. Joyce
November 12, 2002
Stormwater Project No. SW8 020830
6. Please specify the wetlands species to be planted on the 6:1 vegetated shelf. The
detail sheets reference the seeding specification, but the specification makes no
mention of the wetland species.
Since you are using road ditches to collect portions of the runoff from the drainage
areas, it is imperative that the grading plan be followed closely. There can be no
shifting of high points or low points in the field because this can significantly
affect the drainage area to any of the ponds.
8. Please check the BUA total reported for Pond 2. The numbers shown add up to
214,360 ft', not 244,360 ft2.
9. Please write in the actual lot built -upon areas for the lots on the application. It is
not appropriate to simply write in "See Attachment B".
10. The storage pool and permanent pool surface areas for Pond 1 have been switched
on the tabular page of the calculations. The error does not affect the outcome of
the calculation.
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 December 12,
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 [phone].
Sincerely,
nc
✓� �9C41_�,
Linda Lewis
Environmental Engineer
RSS/arl: S:\WQS\STORMWAT\ADDINFO\2002\020830.NOV
cc: Linda Lewis
Ron Cullipher, P.E.

Entity Names
http://www.Secretary.state.nc. us/Corporations/soskb/Corp.asp?53556
Elaine F. Marshall
Secretary
%aI NE Corporate :Nance
*Corporations Home
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Corporation Names
North Carolina
DEPARTMENTOF THE
SECRETARY OF STATE
PO Box 29622 Raleigh, INC 27626-0822 [phone]
Date: 11/11/2002
Document Filings
Name Name Type
Fort Benjamin Commons, LLC Legal
Limited Liability Company Information
SOSID:
0597896
Status:
Current -Active
Date Formed:
7/17/2001
Citizenship:
Domestic
State of Inc.:
NC
Duration:
01/01/2055
Registered Agent
Agent Name:
Registered Office Address:
Registered Mailing Address:
Principal Office Address:
Principal Mailing Address:
Joyce, Patrick P
6994 Highway 70
Newport NC 28570
PO Box 190
Newport NC 28570
6994 Highway 70
Newport NC 28570
No Address
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1 of 1 11/11/2002 12:06 PM

State of North Carolina
Department of Environment
And Natural Resources
Wilmington Regional Office
Division of Land Resources
Land Quality Section
James B. Hunt, Jr., Governor
Wayne McDevitt, Secretary
M and J Investments
Mr. Patrick P. Joyce, Partner
Post Office Box 190
Newport, NC 28570
Dear Mr. Joyce:
WE
September 9, 2002
LETTER OF APPROVAL
A I
���=
NCDENR
NORTH CAROLINA DEPARTMENT OF
ENVIRONMENT AND NATURAL RESOURCES
Z
S£P�Q
Project Name: M and J Investments
Project No.: 990203CAp,� /
Location: US 70 Bypass - Carteret County vt
River Basin: White Oak ``�•.,
Submitted by: James Phillips Land Surveying
Date Received: August 28, 2002
Revised Submittal
This office has reviewed the subject sedimentation and erosion control plan. We find the plan to be
acceptable and hereby issue this letter of approval with comments as attached.
Please be advised that Title 15A, of the North Carolina Administrative Code, 4B.0017(a) requires that a copy
of the approved plan be on file at the job site. Also, you should consider this letter to give the Notice required by
GS 113A-61(d) approved plan. The last page(s) which lists approval comments should be copied and attached
to the sedimentation and erosion control plan that is maintained on site.
North Carolina's Sedimentation Pollution Control Program is performance oriented, requiring protection of
the natural resources and adjoining properties. If, following the commencement of this project, it is determined that
the erosion and sedimentation control plan is inadequate to meet the requirements of the Sedimentation Pollution
Control Act of 1973 (North Carolina General Statute 113A-51 thru 66), this office may require revisions to the plan
and its implementation to insure compliance with the Act.
Recognizing the desirability of early coordination of sedimentation control, we believe that it would be
beneficial if a pre -construction conference could be arranged to discuss the approved plan for this project. Please
contact this office and let us know the date of construction start-up and the date of pre -construction conference so
that we may attend.
We look forward to working with you on this project. If you have any questions, please contact our office.
Sincerely,
Daniel Sams, P.E.
Regional Engineer
DES/dbd
cc: Ginger Turner, Stroud Engineering, P.A.
W iRO-DW Q-Stormwater
W iRO-DW Q-Wetlands
W iRO-LQS
127 Cardinal Drive Extension, Wilmington, N.C. 28405-3845 • Telephone [phone] • Fax [phone]
.An Equal Opportunity Affirmative Action Emplover

Page 1 of 2
APPROVAL COMMENTS AND CONDITIONS
PROJECT NAME:
PROJECT NUMBER:
LOCATION:
RIVER BASIN:
SUBMITTED BY:
DATE RECEIVED:
M and J Investments
990203CA
US 70 Bypass- Carteret County
White Oak
James Phillips Land Surveying
August 28, 2002
This plan approval shall expire three (3) years following the date of approval, if no land disturbing activity
has been undertaken, as is required by Title 15A NCAC 4B.0029.
2. The developer is responsible for the control of sediment on -site. If the approved erosion measures prove
insufficient, the developer must take those additional steps necessary to stop erosion from leaving this site.
Each sediment storage device must be inspected after each storm event. Maintenance and/or clean out
is necessary anytime the device is at 50% capacity.
3. Any and all existing ditches on this project site are assumed to be left undisturbed by the proposed
development unless otherwise noted. The removal of vegetation within any existing ditch or channel is
prohibited unless the ditch or channel is to be regraded with side slopes of 2 horizontal to 1 vertical or less
steep. Bank slopes may be mowed, but stripping of vegetation is considered new earth work and is subject
to the same erosion control requirements as new ditches.
4. The developer is responsible for obtaining any and all permits and approvals necessary for the development
of this project prior to the commencement of this land disturbing activity. this could include agencies such
as the Division of Water Quality's stormwater regulations, their enforcement requirements within Section
401 of the Clean Water Act, the U.S. Army Corps of Engineers' jurisdiction of Section 404 of the Clean
Water Act, the Division of Coastal Management's CAMA requirements, the Division of Solid Waste
Management's landfill regulations, local County or Municipalities' ordinances, or others that may be required.
This approval cannot supersede any other permit or approval; however, in the case of a Cease and Desist
Order from the Corp of Engineers, that Order would only apply to wetland areas. All highland would still
have to be in compliance with the N.C. Sedimentation Pollution Control Act.
5. If any area on site falls within the jurisdiction of Section 401 or 404 of the Clean Water Act, the developer
is responsible for compliance with the requirements of the Division of Water Quality or the Corps of
Engineers respectively. Any erosion control measures that fall within jurisdictional wetland area must be
approved by the aforementioned agencies prior to installation of our Section must be notified of a relocation
of the measures in question to the transition point between the wetlands and the highlands to assure that
the migration of sediment will not occur. If that relocation presents a problems or contradicts any
requirements of either agency, it is the responsibility of the developer to inform the Land Quality Section
regional office so that an adequate contingency plan can be made to assure sufficient erosion control
remains on site. Failure to do so will be considered a violation of this approval.
This project involves ditching activities that potentially impact wetlands. On March 1, 1999, the
Division of Water Quality (DWQ) began enforcing a new wetlands drainage policy that restricts the
draining activities in wetlands, which includes ditching of wetlands. The applicant should contact
DWQ and provide to them a plan with an accurate delineation of wetlands, so that they can
determine compliance with this application with all applicable wetland regulations. A copy of the
erosion and sediment control plan for this project is being provided to DWQ.
6. Any borrow material brought onto this site must be from a legally operated mine or other approved source.
A single use borrow site or an area to waste material is only permissible if it is operated under total control
of the Financially Responsible person or firm who is developing this site, is located on or adjacent to this
site, and has been incorporated as part of this plan.

Page 2 of 2
This permit allows for a land disturbance, as called for on the application plan, not to exceed the previously
approved 106 acres. Exceeding that acreage will be a violation of this permit and would require a revised
plan and additional application fee. Any addition in impervious surface, over that already noted on the
approved plan, would also require a revised plan to verify the appropriateness of the erosion control
measures and stormwater retention measures.
8. The construction detail for the proposed silt fence requires reinforcing wire and posts a maximum of 10 feet
apart. Omission of the reinforcing wire is a construction change that necessitates more posts for support,
i.e., the spacing distance needs to be reduced to no greater than 6 feet apart.
9. A graveled construction entrance must be located at each point of access and egress available to
construction vehicles during the grading and construction phases of this project. Access and egress from
the project site at a point without a graveled entrance will be considered a violation of this approval routine
maintenance of the entrances is critical.
10. This project as proposed fails to provide sufficient sediment storage devices to assure the control of
sediment on -site. Grading must be minimized and the buffer must be left intact for this site to be considered
in compliance.
11. The North Carolina Sedimentation Pollution Control Act mandates a shortened time frame in which to
reestablish vegetative groundcover. Slopes (including cuts, fills, and ditch banks) left exposed will, within
15 working days or 30 calendar days (whichever is the shorter) after completion of any phase of grading,
be planted or otherwise provided with groundcover sufficient to permanently restrain erosion. Most of the
106 acres of this site should already be revegetated.

PROUD ENGINEERING, P.A. HPlaza Two `' ���� Or, V o n H@5R0VVQ1L
151 -A �J
51 Hwy. 24
MOREHEAD CITY, NC 28557 `\
1 (252)�e2147-7479 t �Q
TO WEN jj� — V VdJfL� Qlr)0.\l1
t2-4 �1rOlILVl01. �r- GX1 -
WE ARE SENDING YOU ❑ Attached ❑ Under separate cover via
❑ Shop drawings ❑ Prints ❑ Plans
❑ Copy of letter ❑ Change order ❑
❑ Samples
the following items:
❑ Specifications
_—�
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l�
V"
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THESE ARE TRANSMITTED as checked below:
❑
For approval
❑
For your use
❑
As requested
❑
For review and comment
❑
FORBIDS DUE
REMARKS
❑ Approved as submitted
❑ Approved as noted
❑ Returned for corrections
El
❑ Resubmit copies for approval
❑ Submit copies for distribution
❑ Return corrected prints
❑ PRINTS RETURNED AFTER LOAN TO US
COPY TO
SIGNED: -
If enclosures ere not as noted, kindly notify us at on .

Narrative
Erosion and Sedimentation Control Plan
Stormwater Management Plan
Newport Triangle
Tracts 1-10
August 23, 2002
Owner: Fort Benjamin Commons, LLC
P.O. Box 190
Newport, NC 28570
[phone]
Engineer: Stroud Engineering, P.A.
151-A NC Hwy 24
Morehead City, NC 28557
[phone]
A. Description of Project
1. Type of Development
RECEIVED
AUG 2 8 2002
DWQ
PROD # SW 9 02v836
The Newport Triangle is a 34.22 acre tract located at the eastern intersection of Highway
70 and Chatham Street in Newport, Carteret County, North Carolina. The tract presently consists
of ten lots for future commercial development. This project is being submitted as a high density
project because impervious surfaces cover approximately ninety percent of the tract. Each lot has
been assigned an allowable impervious area.
A portion of Lot 3 and 4 is presently developed, J & S Landscaping and Nursery, and is
being submitted as a temporary low density option, impervious coverage less than 30%. The site
consists of a sales building, greenhouse, gravel drives/parking (see plan Sheet 6 of 6) and is
mostly covered with filter fabric, which is being considered as pervious coverage. Upon
abandonment of the nursery and prior to any new development, the site shall be regraded to
comply with the high density option as proposed with this submittal.
2. Earth Disturbing Activities
a. Excavation and grading for the installation of roads, drainage and utility improvements.
b. Phase 1 - Grading for the construction of Pond 1, 30' ingress/egress easement, Chatham Street
and Lot 1.
c. Phase 2 - Grading for the construction of remaining ponds, streets and lots.
3. Drainage
This tract presently drains to the southeast by way of existing ditches on Highway 70 and
Chatham Street flowing into Snows Swamp Branch which is classified as Class C waters and
eventually draining into the Newport River. The tract is being developed under the High Density
option and three stormwater detention ponds are being proposed to treat runoff from the overall
development of the site.
Pond I is being constructed for lots 1, 2 and 3 and Pond 2 for lots 4 & 5 both with ninety
percent impervious and they discharge to the existing ditch on Chatham Street, eventually draining
to Snows Swamp Branch, Class C waters. Pond 3, for lots 6, 7, 8, 9 & 10, also drains to Snows
Swamp Branch, but discharges to the existing ditch on Highway 70 instead of Chatham Street.

B. Erosion and Sedimentation Control Measures
The following measures are proposed for the site. If it becomes evident that additional erosion and
sedimentation control measures are neeeded, they shall be installed immediately. It is intended that all
grading and excavation activities within a certain area will be protected as soon as that activity is complete,
i.e., drainage swales, utility easements, etc.
1. Sediment Fence — Sediment fence will be utilized as necessary in locations as shown on plans or
as deemed necessary by the engineer to insure that off -site sedimentation is controlled.
2. Sediment Basins — Stormwater detention ponds proposed for the site will serve as sediment basins
during construction phases of development.
3. Riprap outlet protection — Riprap to be installed at locations shown on plans to reduce energy at
high velocity areas.
4. Seeding — All disturbed areas will be seeded within 15 days following construction in accordance
with the seeding schedule shown on plans.
5. Stone Construction Entrance — Temporary stone construction entrances will be used to reduce the
transport of sediment off site.
Maintenance Plan
1. All erosion and sediment control measures shall be checked for stability and effective operations
following every runoff producing rainfall event or at least once per week. Repairs required shall
be completed immediately to the dimension and functions indicated on the plans.
2. Sediment shall be removed form behind the sediment fencing when it becomes 0.5 feet deep at the
fence. The fence shall be replaced or repaired as necessary to maintain a barrier.
3. All seeded areas shall be fertilized, seeded and mulched within 15 days of disturbance. Disturbed
areas shall be fertilized, reseeded and mulched as necessary according to the Contract documents
to establish and maintain a dense vegetative cover.
C. Time Sequence of Operations
"Phase 1 - Pond #1, 30' ingress/egress easement, the rerouting of Chatham Street and Lot 1 are
proposed in phase one of construction.
1. Install stone construction entrance at all points of construction entrances.
2. Install silt fencing at specified locations within area of construction.
3. Excavate and rough grade stormwater detention basin #1 and outlet drainage swale.
4. Seed drainage swale section within 15 days of land disturbance.
5. Install overflow device.
6. Rough grade ingress/egress easement and 100' right of way for Chatham Street and install all
necessary utilities.
7. Seed and mulch all areas of right of way not to be paved, within 15 days of land disturbance.
8. Fine grade street and place stone base course.
9. Pave street.
10. Perform final grading, seed and mulch all remaining disturbed areas.
11. Remove accumulated sediment from stormwater detention basin and perform final grading of
basin as shown on the plans.
12. Install wet detention basin vegetation as specified.
13. Spoil piles may be graded and utilized as fill for lots and/or road construction presently
undeveloped as long as site is seeded within 15 days of completion of grading activities.
**Phase 2 — Construction of remaining ponds, streets and remaining lots.
1. Install stone construction entrance at all points of construction entrances.
2. Install silt fencing at specified locations within area of construction.
3. Excavate and rough grade remaining stormwater ponds.

4. Seed drainage swales section within 15 days of land disturbance.
5. Install overflow devices upon development of impervious surfaces.
6. Rough grade streets.
7. Seed and mulch all areas of right of way not to be paved, within 15 days of land disturbance.
8. Fine grade streets and place stone base course. .
9. Pave streets.
10. Perform final grading, seed and mulch all remaining disturbed areas.
11. Remove accumulated sediment from stormwater detention basin and perform final grading of
basin as shown on the plans.
12. Install wet detention basin vegetation as specified.
13. Spoil piles may be graded and utilized as fill for lots and/or road construction presently
undeveloped as long as site is seeded within 15 days of completion of grading activities.
D. Design Assumptions
1. Design storm is ten years.
2. The rational method was used for design.
E. Wet Detention Basin Operation and Maintenance
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, grass cover and general condition.
b. Check and clear the orifice of any obstructions.
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 (piping, flumes, swales, riprap) quarterly to maintain
proper functioning.
4. Remove accumulated sediment from the wet detention basin systems semi-annually or when depth
is reduced to 75% of the original design depth.
Main Basin
Forebav
Pond 1 original design depth:
7.0'
3.0'
sediment removal benchmark depth:
5.25'
2.25'
Pond 2 original design depth:
7.0'
3.0'
sediment removal benchmark depth:
5.25'
2.25'
Pond 3 original design depth:
7.0'
3.0'
sediment removal benchmark depth:
5.25'
2.25'
Removed sediment shall be disposed of in an appropriate manner in no way adversely impacting
water quality.
5. Remove cattails and other indigenous plants when they cover 50% of the basin surface.
F. Coastal Stormwater Regulations
The North Carolina Division of Environmental Managmement implemented coastal stormwater
regulations in coastal on January 1, 1988. These regulations are detailed in 15NCAC 2H.1000
Stormwater Runoff Disposal. These rule,%WitA"*,�evelopment to be considered under various
options. This project is submitted fo&*'�tgvfiI At gN1ions under Section .1003(d)(2).
SEAL
13343
rr
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STROUD ENGINEERING, P.A. 1,�
Hestron Plaza Two ,•`'� TH
151 A Hwy. 24
MOREHEAD CITY, NC 28557
[phone]
PIMW NO. I OF V t o
gr,(Re T OATE 9IS 100—
s/- DATE a1Z3la2
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1.0'

STROUD ENGINEERING, P.A.
Hestron Plaza Two
151 A Hwy. 24
MOREHEAD CITY, NC 28557
[phone]
DETENTION POND CALCULATIONS
Pond I -
I I.
PERMANENT POOL VOLUME
Elevation Section SA (SF) Av
29.50 Permanent pool 21554
cos i . .,,� � 'y r•.:. I ! 1`_.- i,= �, 11l V 4 .
SHEET NO. Jl" aIFlVCCCC Cp '
L O�Sa �A�EC'pq-0..'f
CALCULATED
CHECKED S��
SCALE
27.50
Shelf
14457
10667;
5.00
53333
22.50
Bottom
6876
Total Vol. 89344
FOREBAY VOLUME
Elevation
1 '- Section--.__-
SA (SF)
Avg. SA
Ht. (FT)
Vol. -
- i
29.50
Permanent pool
7356
6051
3.00
18153 -
26.50
Bottom
4746
Total Vol. 18153
Foreb�y % of Permanent Pool Volume-= 20.32% ----
i
MAINHASIN VOLUME
Elevation
Section
SA (SF)
Avg. SA
Ht. FT-'
Vol. (CF
29.50
Permanent pool
13664
11135
2.00
1 22269
27.50
Shelf
8605
6127
5.00
30635
22.50
Bottom
3649
_ 1 Total Vol. __52904
Stora a volume required 33158 CIF I— - I --
i
Elevation
Section
SA SF
Avg. SA
Ht. FT
Vol. CF
29.50
Permanent pool
21554
- -
24308
1.40
34031
30.90
Storage pool
27061
Total Vol. 34031

} &k wv)
<nV, 2-,eL
NEWPORT TRIANGLE �_1,f
WET DETENTION DRAWDOWN v IT
POND 1
orifice dia,
2.5 In.
orifice area=
0.0341 sf
Cd=
0.6
time Increment
120 minutes
storage volume=
3315811�3 (required l")
overflow el..
30.9
pens. Pool at.
29.5
��w t )vluvu�lK
Tlme
Cumulative
Cumulative
Volume
Height
Flow
Volume
Volume
Increment
T1me
Time
Initial
out
Out
Remaining
(minutes)
(minutes)
(hours)
(ft"3)
(feat)
(oh)
(of)
(ft"3)
0
0
33158.00
1.40
0.1941
0.00
33158.00
120
120
2
33158.00
1.40
0.1941
1397.58
31780.42
120
240
4
317e0.42
1.34
0.1900
1367.81
30392.60
120
3K
6
30392.80
1.28
0.181111111
1338.04
29054.57
120
480
8
29054.57
1.23
0.1017
1308.25
27746.32
120
600
10
27746.32
1.17
0.1776
1278.46
26467.86
120
720
12
26467.86
1.12
0.1734
1248.66
25219.20
120
840
14
25219.20
1.08
0.1693
1218.85
24000.35
120
960
16
24000.35
1.01
0.1651
1189.03
22811.33
120
1080
18
22811.33
0.98
0.1610
1159.20
21662.12
120
1200
20
21652.12
0.91
0.1569
1129.36
20522.76
120
1320
22
20522.78
0.87
0.1527
1099,52
19423.24
120
1440
24
19423.24
0.82
0.1406
1069.88
18363.59
120
1560
26
18353.59
0.77
0.1444
1039.79
17313.80
120
1680
28
17313.80
0.73
0.1403
1009.90
16303.90
120
1800
30
16303.90
0.69
0.1361
980.01
15323.89
120
1920
32
15323.89
0.65
0.1320
950.10
14373.79
120
2040
34
14373.79
0.61
0.1278
920.17
13453.62
120
2180
36
13453.62
0.57
0.1236
890.23
12583.39
120
2280
38
12563.39
0.53
0.1195
860.27
11703,11
120
2400
40
11703.11
0.49
0.1153
830.30
10872.81
120
2520
42
10872.81
0.46
0.1112
800.30
1007251
120
2640
44
10072.51
0.43
0.1070
770.29
9302.22
120
2760
46
9302.22
0.39
0.1028
740.25
8561.97
120
2880
48
8561.97
0.36
0.0988
710.18
7851.79
120
3000
50
7851.79
0.33
0.0045
880.08
7171.70
120
3120
52
7171.70
0.30
0.0003
649.97
8621.73
120
3240
54
6521.73
0.28
0.0561
619.82
5901.91
120
3360
56
5901.91
0.25
0.0819
589.63
5312.28
120
3480
58
531228
0.22
0.0777
559.40
4752.87
120
36M
60
4752.87
0.20
0.0735
529.13
4223.75
120
3720
82
4223.75
0.18
0.083
498.81
3724.94
120
3840
64
3724.94
0.16
0.0851
468.43
3256.51
120
3960
66
3256.51
0.14
0.0e08
437.99
2818.52
120
4080
68
2818.52
0.12
0.0566
407.47
2411.06
120
4200
70
2411.08
0.10
0.0523
376.87
2034.19
120
4320
72
2034.19
0.09
0.0481
346.16
1688.03
120
4440
74
1688.03
0.07
0.0438
315.34
1372.69
120
4500
76
1372.69
0.00
0.0395
284.36
1088.33
120
46W
78
1088.33
0.05
0.0352
253.20
835.13
120
4800
80
835.13
0.04
0.0308
221.80
613.33
120
4920
82
613.33
0.03
0.0284
190.08
423.25
120
5040
84
423.25
0.02
0.0219
157.90
285.35
120
5180
86
265.35
0.01
0.0174
125.02
140.33
120
5280
88
140.33
0.01
0.0126
90.92
49.41
R. ..
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V
STROUD ENGINEERING, P.A.
Hestron Plaza Two
151 A Hwy. 24
MOREHEAD CITY, NC 28557
[phone]
'r4'Vbl %A m e %. _ 7 9 36 2, _CF
Fora►wy. VW Roq'4 "' 0, Z(,71S6
DA 2a i72q QF (fox
bfk 2-6 = 6)435F[ or
SHEET NO. / , OF
CHECKED BY
SEAL_
133"3
9% n
G
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y,tt2�
1Nelr leru'i In tiri���
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: STROUD ENGINEERING, P.A.
Hestron Plaza Two
151 A Hwy. 24
MOREHEAD CITY, NC 28557
[phone]
V- I16/46 14)= 7.ul Plls
im PM l��l--NuunorrT�nana,lc
SHEET NO. 4 Of l� L
CALCULATED B DATE V I U
CHECKED BY DATE
SCAL e
.13343 .
a
,0 D. C\3 ; 0�
-4—
i
1
i
i
.. �.. l ._..._4- ...�_ k
k
I

rkAtObI-IV(-wP0YI jy�ayl -I
sk -5 o�-Lk:�L
L) 15(02
DETENTION POND CALCULATIONS
Pond 2
PERMANENT POOL VOLUME
Elevationj
Section
SA SF
Avg. SA
Ht. FT
Vol. CF
29.00
Permanent pooi
18981
15701
2.00
31401
27.00
Shelf
12420
8962
5.00
44810
22.00
Bottom
5504
Total Vol.
76211
FOREBAY #1 VOLUME
Elevation
Section
SA SF
Avg. SA
Ht. FT
Vol. CF
29.00
Permanent pool
4546
3523
3.00
10568
26.00
Bottom
2499
Total Vol.
10568
FOREBAY #2 VOLUME
Elevation
Section
SA SF
Avg. SA
Ht. FT
Vol. CF
29.00
Permanent pool
3170
2291
3.00
6872
26.00
Bottom
1411
Total Vol.
6872
Forebay % of Permanent Pool Volume =
MAIN BASIN VOLUME
22.88%
Elevation
Section
SA SF
Avg. SA
Ht. FT
Vol. CF
29.00
Permanent pool
10578
8389
2.00
16778
27.00
Shelf
6200
4220
5.00
21100
22.00
Bottom
2240
Total Vol.
37878
Storage volume required = 20590 CF
Elevation
Section
SA SF
Av . SA
Ht. FT
Vol. CF
29.00
Permanent pool
18981
20792
1.00
20792
30.00
Storage pool
22602
Total Vol.
20792
rrrrrnnnuvepq
Ft.Cq
pPCssi''°��2°i
i 1 343
%oZy IN EEP'
AD.
PM1081
Pond Calculations

STROUD ENGINEERING, P.A.
Hestron Plaza Two
151 A Hwy. 24
MOREHEAD CITY, NC 28557
[phone]
JOB
SHEET NO. S IT OF
CALCULATED ef, T_ DATE
CHECKED By
SCALE :90
N e:::V-QQLN
_7
%
:4
[7
-7
F—
ti
PENWNENi 1WL-
7
le
_71—
..... .. ...
3 POE om
. .
.. .. ....... .. . .. .. .. .. .. .. . NN' .......
L v
DWQ
Swxf). 'Z 0 �F 3 0
PROT 9
i II
71 FBI
�j L_ L�o
-75 a s f
JIG4
IV OL,
---------
I �H L N fgo I
B�F
2J
A-
------
-------
�_�_
_�
--------------

NEWPORT TRIANGLE
WET DETENTION DRAWDOWN
POND 2
orifice dia.
2 In.
orifice area=
0.0218 st
Cd=
0.5
time Increment
120 minutes
storage volume=
20590 ft'3
overflow el=
30
perm. pool el.=
29
1 I" IVU I Ivw�4+ov 1 Ir larigl(,
T S(S�o2
_ SIZ-51 ,
%"pQjVA CA/?0�••••
�P..0 0.
* e a SEAL
13343
�Oi
Time Cumulative Cumulative Volume Height Flow Volume Volume •••�Q\Q s���
Increment Time Time Initial out out Remaining 08n. CUv-,,p%
(required 1')
(minutes)
(minutes)
(hours)
(fl
(feet)
(Cfs)
(Cf)
(tM3)
0
0
20590.00
1.00
0.1050
0.00
20590.00
120
120
2
20590.00
1.00
0.1050
756.95
19834.05
120
240
4
19834.05
0.96
0.1030
741.94
19092.10
120
360
6
19092.10
0.93
0.1011
727.93
18364.17
120
480
8
18364.17
0.89
0.0992
713.92
17650.25
120
600
10
17550.25
0.80
0.0972
899.91
16950.34
120
720
12
16950.34
0.82
0.0953
685.89
16264.46
120
840
14
16264.45
0.79
0.0933
671.87
15592.58
120
960
16
15592.58
0.76
0.0914
657.85
14934.73
120
1080
18
14934.73
0.73
0.0894
643.82
14290.91
120
1200
20
14290.91
0.69
0.0875
629.79
13661.12
120
1320
22
13661.12
O.Be
0.0855
615.76
13045.37
120
1440
24
13045.37
0.63
0.0836
601.72
12443.6.5
120
1560
.26
12443.65
0.80
0.0818
587.88
11855.07
120
1680
28
11855.97
0.58
0.0797
573.63
11282.33
120
1800
30
11282.33
0.55
0.0777
559.58
10722.75
120
-1920
32
10722.75
0.52
0.0758
545.53
10177.22
120
2040
34
10177.22
0.49
0.0738
531.47
9645.75
120
2160
36
9645.75
0.47
0.0719
517.41
9128.34
120
2280
38
9128.34
0."
0.0899
503.34
8825.00
120
2400
40
8625.00
0.42
0.0680
489.27
8135.73
120
2520
42
8135.73
0.40
0.0880
475.19
7860.55
120
2640
44
7ee0.55
0.37
0.0640
481.10
7199.45
120
2760
46
7199.45
0.35
0.0621
447.01
8752.44
120
2880
48
6752.44
0.33
0.0601
432.91
6319.53
120
3000
50
6319.53
0.31
0.0582
418.80
5900.73
120
3120
52
5900.73
0.29
0.0562
404.69
5496.04
120
3240
64
5496.04
0.27
0.0542
390.58
5105.48
120
3360
56
5105.48
0.25
0.0623
378.43
4729.05
120
3480
58
4729.05
0.23
0.0503
362.29
4366.76
120
3600
60
4386.7e
0.21
0.0484
348.13
4018.83
120
3720
62
4018.83
0.20
0.0464
333.97
3684.66
120
3840
64
3684.66
0.18
0.0444
319.79
3384.87
120
3960
66
3364.87
0.16
0.0424
305.80
3059.28
120
4080
68
3069.28
0.15
0.0405
291.39
2767.89
120
4200
70
2787.89
0.13
0.0385
277.17
2490.72
120
4320
72
2480.72
0.12
0.0365
262.92
2227.80
120
4440
74
2227.80
0.11
0.0345
248.68
1979.14
120
4560
76
1979.14
0.10
0.0326
234.37
1744.77
120
4880
78
1744.77
0.08
0.0306
220.06
1624.71
120
4800
80
1524.71
0.07
0.0288
205.71
1319.00
120
4920
82
1319.00
0.06
0.0256
191.33
1127.67
120
5040
84
1127.67
0.05
0.0246
176.91
950.76
120
5180
86
950.76
0.05
0.0226
162.44
788.31
120
52BO
88
78B.31
0.04
0.0205
147.92
640.40
120
5400
90
840.40
0.03
0.0185
133.32
507.08
120
5620
92
507.08
0.02
0.0185
118.03
388.45
120
5640
94
388.46
0.02
0.0144
103.83
284.61
120
5780
96
2B4.81
0.01
0.0123
88.80
195.74
120
5880
98
195.74
0.01
0.0102
73.71
122.03
120
6000
100
122.03
0.01
0.0081
58.20
63.83
120
6120
102
63.83
0.00
0.0058
42.09
21.74
1.

iIWY�YI W(��'MM+N�ILL'I?LIW

Joe_ i N11u01'wew�orl lr�a�c,1�
STROUD ENGINEERING, P.A. SHEET NO. g OF 1 0
Hestron Plaza Two 151 A Hwy. 24 oAiCuuTEDer I DATE I s -5 jag
_ r--
MOREHEAD CITY, NC 28557 CHECKED eV oATE �l I ZZ_)(/t�
[phone]

PMuo?, � -Ne W?0y t--TrintC
S�i 2 X
DETENTION POND CALCULATIONS
Pond 3
PERMANENT POOL VOLUME
11�
Elevation
Section
SA SF
SA
Ht. FT
Vol. CF
-Avg.
23.00
Permanent pool
31575
27225
2.00
54449
21.00
Shelf
22874
18072
5.00
90360
16.00
Bottom
13270
Total Vol.
144809
FOREBAY #1 VOLUME
Elevation
Section
SA SF
Avg. SA
Ht. FT
Vol. CF
23.00
Permanent pool
5914
4697
3.00
14090
20.00
Bottom
3479
Total Vol.
14090
FOREBAY #2 VOLUME
Elevation
Section
SA SF
Avg. SA
Ht. FT
Vol. CF
23.00
Permanent pool
7104
5788
3.00
17364
20.00
Bottom
4472
Total Vol.
17364
Forebay % of Permanent Pool Volume =
MAIN BASIN VOLUME
21.72%
Elevation
Section
SA SF
Avg. SA
Ht. FT
Vol. CF
23.00
Permanent pool
17734
14789
2.00
29578
21.00
Shelf
11844
8919
5.00
44595
16.00
Bottom
5994
Total Vol.
74173
Storage volume required = 50645 CF
Elevation
Section
SA SF
Avg. SA
Ht. FT
M52702
23.00
Permanent pool
31575
35135
1.50
24.50
Storage pool
38694
Total Vol.
52702
ib do-.
* : a SEA1
vim'. x
043
90:.-F� 9,
•%'.GINS.
',�����Dereoeio •��•

joe
STROUD ENGINEERING, P.A.
Hestron Plaza Two
SHEET NO.
151 A Hwy. 24
CALCULATEDg'V�V
MOREHEAD CITY, NC 28557
CHECKED By V�
[phone]
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PROJ # S6v,Y0 Z 930-��

NEWPORT TRIANGLE
WET DETENTION DRAWDOWN
POND 3
orifice dla.=
3 In.
orifice area-
0.0491 sf
Cd=
0.6
time Increment
120 minutes
storage volume-
50645 ftr3 (required 1")
overflowel.
24.5
Perm. pool of.
23
`M k0
SI•,Js >a
SHY $151D2
,4s�� un eryej,
cApo� s,,I
•9
*• SEAL �;�:
i3343 _
Time
Cumulad"
Cumulative
Volume
Height
Flow
Volume
Volume
Increment
Time
Time
Initial
Out
Out
Remaining
(minutes)
(minutes)
(hours)
(ft"3)
(feet)
(cfs)
(cf)
(f 43)
0
0
50645.00
1.50
0.2893
0.00
50645.00
120
120
2
50645.00
1.50
0.2893
2083.16
48561.84
120
240
4
48561.84
1.44
0.2833
2039.86
46521.98
120
380
6
48521.98
1.38
0.2773
1996.56
44525.42
120
480
8
44525.42
1.32
0.2713
1953.25
42572.17
120
600
10
42572.17
1.20
0.2653
1909.93
40662.24
120
720
12
40662.24
1.20
0.2592
1866.59
38795.65
120
840
14
38795.65
1.15
0.2532
1823.25
38972.40
120
960
16
36972.40
1.10
0.2472
1779.89
35192.52
120
1080
18
35192.52
1.04
0.2412
1736.52
33466.00
120
1200
20
33456.00
0.99
0.2352
1693.13
31782.87
120
1320
22
31762.87
0.94
0.2291
1649.73
30113.14
120
1440
24
30113.14
0.89
0.2231
1806.32
2850e.82
120
1560
28
28506.82
0.84
0.2171
1562.89
26943.93
120
1680
28
28943.93
0.80
0.2110
1519.44
25424.49
120
1800
30
25424.49
0.75
0.2050
1475.98
23948.51
120
1920
32
23948.51
0.71
0.1990
1432.49
2251e.01
120
2040
34
22516.01
0.67
0.1929
1388.99
21127.02
120
2180
36
21127.02
0.63
0.1889
1345.47
19781.56
120
2280
38
19781.56
0.59
0.1608
1301.92
18479.64
120
2400
40
18479.64
0.56
0.1748
1258.35
17221.29
120
2520
42
17221.29
0.61
0.1e87
1214.75
1600e.64
120
2640
44
16006.64
0.47
0.1627
1171.12
14835.42
120
2760
46
14836.42
0."
0.1668
1127.47
13707.95
120
2800
48
13707.95
0.41
0.1505
1083.78
12624.19
120
3000
50
12624.18
0.37
0.1445
1040.05
11584.12
120
3120
52
11684.12
0.34
0.1384
999.29
10587.83
120
3240
64
10507.83
0.31
0.1323
952.48
9635.35
120
3360
58
9635.35
0.29
0.1262
908.63
8726.72
120
3480
58
8726.72
0.26
0.1201
864.73
7861.99
120
36M
60
7861.90
0.23
0.1140
820.77
7041.23
120
3720
62
7041.23
0.21
0.1079
776.74
6264.48
120
3840
64
6264.48
0.19
0.1018
732.65
5531.83
120
3060
88
6531.83
0.18
0.0956
688.48
4843.36
120
4080
68
4843.36
0.14
0.0895
644.21
4199.15
120
4200
70
4199.15
0.12
0.0833
599.84
3599.31
120
4320
72
3599.31
0.11
0.0771
555.35
3043.96
120
4440
74
3043.98
0.09
0.0709
510.71
2633.26
120
4660
76
2533.26
0.08
0.0647
465.90
2087.35
120
4680
78
2087.35
0.0e
0.0685
420.88
1646.47
120
4800
80
1646.47
0.06
0.0522
376.60
1270.87
120
4920
82
1270.87
0.04
0.0458
329.99
940.87
120
5040
84
940.87
0.03
0.0394
283.94
656.94
120
5160
86
650.94
0.02
0.0330
237.26
419.68
120
5280
88
419.88
0.01
0.0283
189.63
230.05
120
5400
90
230.05
0.01
0.0195
140.40
89.65
120
5520
92
89.65
0.00
0.0122
87.65
2.01
3.-12dadS

85% TSS REMOVAL IN COASTAL COUNTIES
(30 FOOT VEGETATED FILTER REQUIRED)
DEPTH
3'
3.5'
4.0'
4.5'
5.0'
5.5'
6.0'
6.5'
7.0'
7.5'
IMP %
10%
.9
1 .8
.7
.6
.5
0 1
0
1 0
0 1
0
20%
1.7
1.3
1.2
1.1
1.0
.9
.8
.7
.6
.5
30%
2.5
2.2
1.9
1.8
1.6
1.5
1.3
1.2
1.0
.9
40%
3.4
3.0
2.6
2.4
2.1
1.9
1.6
1.4
1.1
1.0
50%
4.2
3.7
3.3
3.0
2.7
2.4
2.1
1.8
1.5
1.3
60%
5.0
4.5
3.8
3.5
3.2
2.9
2.6
2.3
2.0
1.6
70%
6.0
5.2
4.5
4.1
3.7
*3.3
2.9
2.5
2.1
1.8
80%
6.8
6.0
5.2
4.7
4.2
3.7
3.2
2.7
2.2
2.0
90%
7.5
6.5
5.8
5.3
4.8
4.3
3.8
3.3
2.8
1.3
100%
8.2
7.4
6.8
6.2
5.6
5.0
4.4
3.8
3.2
2.6
*Rcvised I013M7
90% TSS REMOVAL IN COASTAL COUNTIES
(NO VEGETATED FILTER REQUIRED)
DEPTH
3'
3.5'
4.0'
4.5'
5.0'
5.5'
6.0'
6.5'
7.0'
7.5'
IMP
10%n
1.3
1.0
.8
.7
.6
.5
.4
.3
.2
.1
20%
2.4
2.0
1.8
1 1.7
1.5
1 1.4
1.2
1 1.0
.9
.6
30%
3.5
3.0
2.7
2.5
2.2
1.9
1.6
1.3
1.1
.8
40%
4.5
4.0
3.5 ,
3.1
2.8
2.5
2.1
1.8
1.4
1.1
50%
5.6
5.0
4.3
3.9
3.5
3.1
2.7
2.3
1.9
1.5
60%
7.0
6.0
5.3
4.8
4.3
3.9
3.4
2.9
2.4
1.9
70%
8.1
7.0
6.0
5.5
5.0
4.5
3.9
3.4
2.9
2.3
80%
9.4
8.0
7.0
6.4
5.7
5.2
4.6
4.0
3.4
2.8
90%
10.7
9.0
7.9
7.2
6.5
5.9
5.2
4.6
3.9
3.3
100%
12.0
10.0
8.8
8.1
7.3
6.6
5.8
5.1
4.3
16

18-73L
)RAINAGE & SEWERAGE- HYDRAULIC COMPUTATIONS-5
a = Cross - seefiona( For pipes {u!l
— area of waferwoy — or half -full
a- wetted perimeter - R
R P = Hydraulic radius.
SECTION OF ANY OPEN CHANNEL SECTION OF CIRCULAR PIPE
V=Averoye or meon velocity in feet per second.
Q = a V =Discharge of pipe or channel in cubic feet per second (c. f.s.).
n = Coefficient of rouyhness ofpipe or channel surf'oce , see Table A-Pg./8 68.
S = S/oPe of Hydrou/ie Gradient (water surA7ce in open chonncls or plPes not
under pressure, same os slope of chonne/ or pipe invert only when flow
is uniform in con3tont section.
FIG.A-HYDRAULIC ELEMENTS OF CHANNEL SECTIONS.
100
90
So
7o
60
50
I&I
V'Q
—
A
V'I
V
I
G
Qa;05
�
J
Io'119o'
0 0 10 20 30 40 50 GO 70 80 90 I/00 11 120
HYDRAULIC ELEMENTS
PER CENT OF VALUE FOR FULL SECTION (APPROXIMATE)
'AMPLE. Given: Di5chorge =12 c. f.'s. through a pipe which has rOOacily flowing / //
/S c. f. S. of c veto cily of 7.0 ff per sec. Po9wh,eof to 1ii7od V for Q - /2 C. f5.
Percentage of fu// discha,- - /2 - 80% Enter char/ at 80% ' of Yo/ue
for fu//Secs/on of Hydraulic E/emei7/s, AV Y=ff2.5%x7-7.9 {f per sec.
FIG.B-VALUES OF HYDRAULIC ELEMENTS OF CIRCULAR SECTION
Cnn I/n n Ie'%I I a nF PI n�A/

i ioi)1-Newpovfkt lfl
Appendices
NEW YORK DOT DISSIPATOR METHOD
FOR USE IN DEFINED CHANNELS
(Source: "Bank and channel lining procedures", New York Department
Of Transportation, Division of Design and Construction, 1971.)
Note: To use the following chart you must know:
(1) Q full capacity
(2) Qto
(3) V full •
(4) Vto
where Q = discharge in cfs and V = Velocity in FPS.
ESTIMATION OF STONE SIZE AND DIMENSIONS FOR
CULVERT APRONS
Step 1) Compute flow velocity Vo at culvert or paved channel outlet,
Step 2) For pipe culverts Do is diameter.
For pipe arch, arch and box culverts, and p2Me0 channel outlets,
Do=Ao, where A: cross -sectional area of flow at outlet
For multiple culverts, use Do=1.25xDo of single culvert.
Step 3) For apron grades of 1090 orsteeper, use recommendations
For next higher zone. (Zones d through 6)..
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T 510' 15' 20' 25'
DIAMETER (Ft.)
Figure 8.061.1
Rev. I V)J 8.06.5

u
N
w����rn
APMN MAC K
vnxc<.T OIU£Rf
L7
TO PPIMW SCOUN
MOLE USE u A wAvs
L2
1
STONE FILLING (FINE), �, "r C . A.,
L 3 x Do
4 x De
2
STONE FILLING (LIGHT) CL B
3 x D•
6 x Ds
3
STONE FILLING (MEDIUM)'CL 1
4 x D,
8 x D.
4
STONE FILLING (HEAVY)" CL 1'
4 x D.
6 x -Do
S
STONE FILLNG (HEAVY) CL-2
1x Ds
10 x D.
6
STONE FILLWG (HEAVY) - CI-2
6 x Do
10 x Do
7 SPECIAL STUDY REQUIRED (ENERGY DISSIPATORS, STILLING
BASIN OR LARGER SIZE STONE).
Fig. 8.06.b.2
Width = 3 times pipe dia. (min.)
DETERMINATION OF STONE SIXES FOR DUMPED STONE
CHANNEL LININGS AND REVETMENTS
Siep 1) Use figure 8.00.3 to determine maximum stone size (e.g. for 12
Fps---20" or 550 lbs.
Step 2) Use figure 8.061.4 to determine acceptable size range for stone
. (for 12 FPS it is 125-500 lbs. for 75% of stone, and the maximum
and minimum range in weight should be 25-500 lbs.)
Note: In determining channel velocities for stone linings and revetmem, use
the following coefficients of roughness:
Diameter
Mannin's
Mn.
thickness
(inches)
"n"
of lining
(inches)
Fine
3
0.031
9
12
Light
6
0.035
12
18
Medium
13
0.040
18
24
Heavy'
„23
0.044
30
36
(Cha h)
(Dixxxpxtons)

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