SW8000104_HISTORICAL FILE_20000412

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
SW8 000104
DOC TYPE
❑ CURRENT PERMIT
❑ APPROVED PLANS
HISTORICAL FILE
❑ COMPLIANCE EVALUATION INSPECTION
DOC DATE
2000041,L
YYYYMMDD

State of North Carolina
Department of Environment
and Natural Resources
Wilmington Regional Office
James B. Hunt, Jr., Governor
Bill Holman, Secretary
Division of Water Quality
Mr. Leo Weston, Owner
Leo Weston Concrete Contractor, Inc.
643 Church Road
Pine Hill, NC 28572
Dear Mr. Weston:
Ame
NCDENR
NO CAROUNA DEP mEw OF
ENVIRONMENT AND NATURAL RESOUROES
April 12, 2000
Subject: Permit No. SW8 000104
Leo Weston Apartments
High Density Stormwater Project
Onslow County
The Wilmington Regional Office received a complete Stormwater Management Permit Application for Leo Weston
Apartments on April 11, 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 2H.1000. We are forwarding
Permit No. SW8 000104 dated April 12, 2000, for the construction of Leo Weston Apartments.
This permit shall be effective from the date of issuance until April 12, 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
me at [phone].
Sincerely,
Rick Shiver
Water Quality
RSS/sav: S:\WQS\STORMWAT\PERMIT\000104.APR
cc: David Newsom, P.E.
Corann Harper, Onslow County Inspections
Scott Vinson
Wilmington Regional Office
Central Files
Regional Supervisor
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 000104
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
STATE STORMWATER MANAGEMENT PERMIT
HIGH DENSITY DEVELOPMENT
In accordance with the provisions of Article 21 of Chapter 143, General Statutes ofNorth Carolina as amended, and
other applicable Laws, Rules, and Regulations
PERMISSION IS HEREBY GRANTED TO
Leo Weston Concrete Contractor, Inc.
Leo Weston Apartments
Onslow County
FOR THE
construction, operation and maintenance of a wet detention pond in compliance with the provisions of 15A NCAC
2H A 000 (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 April 12, 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
81,762 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 000104
DIVISION OF WATER QUALITY
PROJECT DESIGN DATA SHEET
Project Name:
Permit Number:
Location:
Applicant:
Mailing Address:
Application Date:
Name of Receiving Stream/Index #:
Classification of Water Body:
If Class SA, chloride sampling results:
Pond Depth, feet:
Permanent Pool Elevation, FMSL:
Total Impervious Surfaces, ft2:
Buildings, ft2:
Parking, ft2:
Sidewalks, ft2:
Other, ft2:
Offsite Area entering Pond, ft2:
Required Surface Area ft2:
Provided Surface Area, ft2:
Required Storage Volume, ft3:
Provided Storage Volume, W:
Temporary Storage Elevation, FMSL:
Controlling Orifice:
Leo Weston Apartments
SW8 000104
Onslow County
Mr. Leo Weston, Owner
Leo Weston Concrete Contractor, Inc.
643 Church Road
Pine Hill, NC 28572
April 11, 2000
Northeast Creek / WOK02 19-16-(0.5)
"SC"
n/a
4.00
29.00
81,762
28,918
• 40,852
10,480
1,512
none, per Engineer
5,831
6,000
6,724
7,930
30.19
1.00"t pipe
3

State Stormwater Management Systems
Permit No. SW8 000104
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
ofDWQ. 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.
B

State Stormwater Management Systems
Permit No. SW8 000104
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.
III. GENERAL CONDITIONS
This permit is not transferable. In the event there is a desire for the facilities to change ownership, or there
is a name change of the Permittee, a formal permit 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 12th day of April, 2000.
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
i7 ; 1 ,
�yv t Kerr. T. Stevens, Director `
Division of Water Quality
By Authority of the Environmental Management Commission
Permit Number SW8 000104
5

State Stormwater Management Systems
Permit No. SW8 000104
Leo Weston Apartments
Stormwater Permit No. SW8 000104
Onslow 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,
for (Project Owner) hereby state that, to the best of my abilities, due care
and diligence was used in the observation of the project construction such that the construction was observed to be
built within substantial compliance and intent of the approved plans and specifications.
The checklist of items on page 2 of this form is included in the Certification.
Noted deviations from approved plans and specification:
Signature
Registration Number
Date
SEAL
R

State Stormwater Management Systems
Permit No. SW8 000104
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
Corann Harper, Onslow County Building Inspector
7

•�xa��;,N., ,i-,w a ;' ,'s;�=`S: <" _:.ram 'i',�n7 ac.'. OFACE.USE
Date Received
Fee Paid
Permit Number
ZG . 7
<AQJ
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
This form may be photocopied for use as an original
I. GENERAL INFORMATION
1. Applicants name (specify the name of the corporation, individual, etc. who owns the project):
l cn L 6nie_- z �io�.rrn �ar�ri i A
2. Print Owner/Signing Official's name and title (person legally responsible for facility, and compliance):
LETy 6L / QWNF R
3. Mailing Address for person listed in item 2 above:
% 4r !i C HC/Z/�+ 7rJ,!9-r2
City: Piniii 141� 1 State: A) Zip: 76rJ 7 Z
Telephone Number: ( D 1 % C/ 8 - 4_'o % C/
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):
6. Directions to project (from nearest major
il
7. Latitude: 'Ltf 'ti '5fj-Z Longitude: -77 J. I t,3 of project
8. Contact person who can answer questions about the project:
Name: . Telephone Number: (1/0 1 3� - �I50C)
OHr/ i . P/CrZcE' 560c,
H. PERMIT INFORMATION: /
1. Specify whether project is (check one): �/ New Renewal Modification
Form SWU-101 Version 3.99 Page 1 of 4

2. - If thhis application is being submitted as the result of a renewal or modification to an existing permit, list the
existing'pennit number and its issue date (if known)
3. Specify the type of project (check one):
_Low Density ✓ High Density _Redevelop _General Permit _Other
4. Additional Project Requirements (check applicable blanks):
_CAMA Major Sedimentation/Erosion Control _404/401 Permit _NPDES Stormwater
Information on required state permits can be obtainer.by contacting the Customer Service Center at
1-5-/7-623-6748.
III. PROJECT I-NFORMATION
1. In the space provided below, summarize how stormwater will be treated. Also attach a detailed narrative
nn(one to two pages) describing stormwater managemenr for the project. 121JC-� 1= 0i7 170 f�
? Stormwater runoff from this project drains to the Y/� / /: QAt,, nz ,Gjz� River basin.
3. Total Project Area: L+-. O 1 acres
5. How many drainage areas does the project have? i
4. Project Built Upon Area: 'J °D %
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;or each area provided in the same format as below.
1.iatio_n�a•2,
;Stream
Name
tream Classreapervious'
=DrainageArea
Aream
ervious'Area I
-7 I . /1 c
a Impervious' Area (total)
o
`Drainage=Aiea2; "
Cn-site Buildings
^ cf l C-i
Cn-site Streets
Cn-site Parking
9_
Cn-site Sidewalks
I I o
Cther on -site p p sue Rda
- ^ 15-
Cff-site
NIA
Total: 0 1 -7 (, 2 - G
Total:
Imperious area is defined as the built upon area including, ;ut not limited to, buildings, roads, parking areas,
sidewalks, gravel areas, etc.
Fcrm SWU-101 Version 3.99 Page 2 of =

N 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 changed or deleted without the consent of the State.
2. No more than square feet of any lot shall be covered by structures or impervious materials.
Impervious materials include asphalt, gravel, concrete, brick, stone, slate or similar material but do not include wood
decking or the water surface of swimming pools.
3. Swales shall not be filled in, piped, or altered except as necessary to provide driveway crossings.
4. Built -upon area in excess of the permitted amount requires a state stormwater management permit modification prior to
construction.
5. All permitted runoff from outparcels or future development shall be directed into the permitted stormwater control
system. These connections to the stormwater control system shall be performed in a manner that maintains the
integrity and performance of the system as permitted.
By your signature below, you certify that the recorded deed restrictions and protective covenants for this project
shall include all the applicable items required above, that the covenants will be binding on all parties and
persons claiming under them, that they will run with the land, that the required covenants cannot be changed or
deleted without concurrence from the State, and that they will be recorded prior to the sale of any lot.
V. SUPPLEMENTFORMS
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

V.i: • 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 7.7ZAI
• One copy of the. applicable Supplement Form(s) for each BMP r?ZA1
• Permit application processing fee of 5420 (payable to NCDENR) der/
• Detailed narrative description of stormwater treatment/management i�/(✓7�
• Two copies of plans and specifications, including: L 14A I
- Development/Project name
- Engineer and firm
- Legend
- North arrow
- Scale
- Revision number & date
- Mean high water line
- Dimensioned property/project boundary
- Locahon map with named streets or NCSR numbers
- Original contours, proposed contours, spot elevations, finished floor elevations
- Details of roads, drainage features, collection systems, and stormw_ ater 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)
VIL 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): Zyriia�l
Mailing Address: L'�-Cc/ / iJi �7
city: ,)'I r!57N 4" 4 1� State: NC Zip:
Y Bi
VIII. APPLICANT'S CERTIFICATION
Fax: ( 9/0 ) 3/f 6 /Z/b
I, (print or type name of person listed in General Information, item 2) LD
certify that the information included on this permit application form is, to the best of my knowledge, correct and
that the project will be constructed in conformance with the approved plans, that the required deed restrictions
and protective covenants will be recorded, and that the proposed project complies with the requirements of 15A
NCAC 2H .1000.
Signature:Date: 7
Form S`T'U-101 Version 3.99 Page 4 of 4

list the
o an
enewal application is being submitted as the result of a randmodificationts
or issue date ( knowng permi
�—
�Sting permit number
/Specify the type of projects (check one):H __General Permit _Other
/ _Low Density
gh Density __Redevelop
4. Additional Project Requirements (check applicable blanks): Control _404/401 Permit _NPDES Stormwater
A LAMMajor _Z5edimentation/Erosion
mits can be obtained by contacting the Customer Service Center at
Information on required state per
1-877-623-6748.
n1, PROJECT INFORMATION
1 in the space provided below, summarise how stormwater will be treated. Also attach a detailed narrative
(one to two pages) describing stormwater management for the project .
Z=�
ti5
� � �¢ � River basin.
2. StormwateI runoff from this project drains to the � e--0/1
Ll on Area:��
tal Project Area:�—
acres
4. Project Built p
3. To 1 i
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.
Receiving Stream Name
Receiving Stream Class
Drainage Area
Existing impervious` Area
Proposed impervious`Area
% Impervious` Area (total)
On -site buuair
on -site Streets
On -site ePP--kin
On -site 5iaewa
Other on -site Do—p+1
3.a?iK�,00b
Off -site I Totai:
Total: o roads, parking areas,
Impervious area is defined as the built upon area including, but not limited to, buildings,
sidewalks, gravel areas, etc.
Form Sw11-101 Version 3.99
Page 2 of 4

JOHN L. PIERCE - SURVEYING
Land Surveying - Land Planning - Mapping
P.O. Box 1685
409 Johnson Blvd.
Jacksonville, N.C. 28541
Office: [phone] Fax No.: [phone]
E-Mail: [e-mail]
TO Scott Vinson
N.C.Department of Environment
and Naturalsores
127 North Cardinal Drive
Wilmington, NC 28405
WE ARE SENDING YOU
❑ Drawings ❑ Attached
❑ Copy of Letter ❑ Prints
❑ Change order
letter of transmittal
'Xpril 6, 2000 JOB No.
ATTENTION
Ott Vinson
tuE
Leo Weston Apartments
❑ Under separate cover via
❑ Plans
❑ -
❑ Samples
the following items:
❑ Specifications
COPIES
DATE
NUMBER
DESCRIPTION
1
Ori 1 "Stormwat r Management AoDlication"
SIORWA[ff
ER,
APR 1 1 2000
DWO
THESE ARE TRANSMITTED as checked below:
❑ For approval
❑ For your use
❑ As requested
❑ Approved as submitted
❑ Approved as noted
❑ Returned for corrections
❑ Resubmit copies for approval
❑ Submit copies for distribution
❑ Return corrected prints
❑ For review and comment
❑ For bids due 19
❑ Prints returned after loan to us
REMARKS Should you need any additional
information, please advise.
SIGNED

I \
03/15/9'000 15:28
910-346-1210
JOHN L PIERCE
PAGE 01
P.O. Box 1686
Jacksonville, NC 28541
JOHN L. PIERCE & ASSOCIATES, P.A.
LAND SURVEYING - LAND PLANNING - MAPPING
OFFICE:910-348-9800
FAX NO.: 910-346-1210
E-MAIL; Jpierce®onslowonllne.net
DATE: O/Vo�
FAX NO. [phone]
NUMBER OF COPIES INCLUDING TSLS PAGE: s
REMARKS:
409 Johnson Blvd.
Jacksonville, N.C. 28540
LOTS, FARMLAND AND WOODLANDSURVEYING
SUIRVEYING TOPOGRAP4 C SURVION EYINGYOUT - LAND AND MAPPING
PLANNING
Phase Environmental Audit / Risk Asammem

03/15/,2000 15:29 910-346-1210 JOHN L PIERCE
PAGE 02
Design Calculations
Stormwater Wet Detention Basin
for
Leo Westin Apartment Project
. )ousted at
Pine Valley Road at Liberty Drive
Jacksonville, North Carolina
(Rewhad 12I101". 211i00)
m &5WO
The project consist of construction of apartment units and associated sitework on a 4.01 acre tract located
in the northwest quadrant of the Pine Valley Road and Liberty Drive intersection in Jacksonville, NC. The
site is currently vacant. Construction will include 45 buildings (impervious area = 642.6 SF each), paved
parking lot, water and sewer utilities, concrete sidewalks and associated landscaping.
2. Design Requirements
Project will be designed in accordance with NC Administrative Code Section )5A NCAC 2I.1000 -
Stormwater Management. This site is in the category of "development activities within in coastal ceninties
except those areas draining to Outstan&ng'Resowce Waters or within one-half mile of rind draining to SA
waters". Due to project density,an engineered solution (wet detention pond) will be required. In
accordance with regulations, the engineered solution shall be designed as to provide for 85% removal of
total suspended solids with a vegetated filter or 9016removal without vegetative filter.
i Required Pond Area
a. Compute Percent Impervious:
Proposed Impervious Areas:
Buildings (642.6 SF imperv. area per unit x 45 units):
28,918 SF
Parking:
40,852 SF
Sidewalks:
10,480 SF
Other (dumpster pads)
1,512 SF
Future:
—(no
81,762 SF
Total area draining to proposed pond:
142,006 SF
Percent Impervious =81,762 SF / 142,006 SF'
= 0.58 (58%)
b. Compute Surface Area:
Using Surface Area to Drainage Area Ratio Chart for 9096 TSS Removal (copy attached) and
assuming 5.0' pond depth:
SA/DA = 4. 1 % (interpolated)

03/,15/,2000 15:28 910-346-1210 JOHN L PIERCE PAGE 03
9, Forebav
Forebay shall include 20% of pond area:
Forebay area = 6,000 SF x 20%
= 1,200 SF
Forebay length = Forebay area / pond width
= 1,200 SF / 44.72'
26.83'
Dimensions:
Total Pond - 44.72' x 134.16'
Forebay - 44.72' x 26.83'
Elevations sauming_bottom = Elev. 24):
Relative
Actual
Hipp
Elevation
s—'
100 Yr. Flood (top) -
7.77
31.77
9,249 SF
100 Yr. Owd storage range: 0.67
10 Yr. Flood-
7.10
31.10
8,412 SF
10 Yr. good stomge range: 0.91
l-Inch Storage -
6.19
30.19
7,328 SF
I -inch stomgc mngv 119
Permanent Pool -
5.00
29.00
6,000 SF
Bottom -
0.00
24.00
Q99 Devices:
Use 1" orifice bleed down
Use 30" diameter Ch4P primary discharge weir
Use 10' broad crested weir emergency spillway

03/-15/2000 15:28 910-346-1210 JOHN L PIERCE PAGE 04
Use I" diameter orifice
7 Primary Outlet
Primary outlet shall be a 30 CMP installed vertically as a weir stntcture to pass the 10 year design
storm. The 10 year peak discharge (Qlo) is computed using the Rational formula as follows
Qia � C I A
where: C = 0.51 ((1.82 Ac x 0.80) + (1.44 Ac x 0.15)) / 3.26 Ac)
I10 7.0 in/hr (Wilmington IDF curve Qa 5 minute duration)
A = 3.26 Ac
Q,u = (0.51) x (7.0) x (3.26)
= 11.6 cfs .
Assuming %2 of the entire circumference of 30P CMP is used as weir, flow per foot of
weir may be computed as follows:
Flow per foot = 11.6 cfs / ((30" / 12) x PI / 2)
= 2.95 cfs/foot
Using sharp crested weir tables (copy attached)
where: h = observed head
p = 5 (pond depth)
h = 0.91'
1;, > meraeocv Soitlway
Emergency spillway shall be a broad crested earthen weir designed to pass the 100 year storm. The
100-year peak discharge (Q,00) is computed using the Rational formula as follows:
Q,uo_CIA
where: C = 0.51
I,u, - 10.0 in/hr Wilmington IDF curve @ 5 minute duration
A = 3'26 Ac
Q,m=(0.51) x (10.0) x (3.26)
= 16.6 cfs
Using the broad crested weir equation (rearranged for H):.
H = (Q / C, x L)23
where: Q = 16.6 cfs
C,, = weir coefficient (3.0)
L = length of Wier (8) (try 10')
H = depth
H = 0.67'

03/15/2000 15:28 910-346-1210 JOHN L PIERCE PAGE 05
Therefore:
Surface Area = SAIDA x Drainage Area
=4.1% x 142,006 SF
5,822 SF say 6,000 SF
4, Determine Volume to be Controlled from 1" Storm
Using Schuler "Simple Method":
Rv = 0.05 + 0.009(l) where I = percent impervious
Rv = 0.572 inlin
Control Volume = Design RainfWl x Rv x Drainage Area
= 1 in x 0.572 infm x 3.26 Ac
= 1.96 acre -in or 0.16 acre-feet or 6,769 CF (round up to 7,869 CF)
5. Determine Depth of Stora¢e
Solving volume equation by trial and error for depth (d):
V = (surface Area x d) + (perimeter) (1/2) (Md) (d)
where: V = Required Control Volume (7,869 CF from above)
Surface Area = Pond surface area (6,000 SF from above)
M = Pond Side Slopes (assume 3)
Perimeter = 357.76' (44.72' wide x 134.16 long — 3:1 ratio)
d= 1.19'
Normal Pond Surface Area (44.72' x 134.16'): 6,000 SF
Comm] Volume Surface Area (51:86' x 141.30'): 7,328 SF
Control volume must be drawn down over a period of two to five days:
Q2 = 7,869 CF / (2 days x 86,400 seconds per day)
_ .046 cfs
Q5 = 7,869 CF / (5 days x 86,400 seconds per day)
_ .018 cfs
Using orifice equation (rearranged to solve for diameter):
D = (Q / 0.026 (h)'a) h
assume h = IA'
D2 = (.Mcfs/0.026(1)5)"
D2 = 1.33"
D5 _ (.018cfs/0.026(1)"T2
D5 = 0.93"

June L r1GrtuG I'liUt tlb
ti if this application is being submitted as the result of a renewal or modification to an existing permit, list the
Basting permit number and its issue date (if ]mown)_`
3. Specify the type of project (check one):
Low Density High Density Redevelop iGeneral Permit _Other
4. Additional Project Requirements (check applicable blanks):
____CAMA Major 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. PROJECTINFORMATION
1. In the space provided below, sum= ize how stormwater will be treated. Also attach a detailed narrative
(one to two pages) describing stormwater management for the project .
�i � .z7rnM,.i.��P. 7c.,vn�/� i^rzn.✓1 �.v�.7.=i2uia <z,���c�c ,.��r i
2. Scormwater runoff from this project drains to the i 16orl r 04_; / River basin.
3. Total Project Area: ± O I acres
5. How many drainage areas does the project have?
4. Project Built Upon .Area: g %
6. Complete the following information for each drainage area. If there are more &.an two drainage areas in the
project, attach an additional sheet with the information for each area provided in the same format as below.
;zTrefusmatio ;
rx`� iL" w"?r'I k"' w z, ra ' DrainagcAreaZ,:;w x, .:.t,.,
Receiving Stream Name
U r
Receivurg Stream Class
Drainage Area
1,21
E)dsting Impervious' At ea
- 0 -
Proosed Im ervious'Area
i -7 jFa, A3
% Is ervicus' Area (total)
cln
,�.�.:,'iaus Sti�aceArea:: �;:�;h�;""'_M;;,#�g�a �y��.�r•,-.;:;�.d;,�:v>r,.r<iDrzdna
EKxeat2:"„t'��°'�,
On -site Buildings q tr6SY
On -site Streets
On -site Parking
On -site Sidewalks o 0i
Otheron-site pt, o,k Pal, -6
Off -site µ
Total: o
Total:
'Impervious area is dejtned as the built upon area including, but not limited to, buildings, roads, parking areas,
s dewalks, gravel areas, etc.
Form 5WU-101 version 3.99
Page 2 of 4
----. - - - - - - -

State of North Carolina
Department of Environment
and Natural Resources
Wilmington Regional Office
James B. Hunt, Jr., Governor
Bill Holman, Secretary
Division of Water Quality
March 14, 2000
Mr. Leo Weston, Owner
Leo Weston Concrete Contractor, Inc.
643 Church Road
Pine Hill, NC 28572
A 4 0
NCDENR
NORTH GAROUNA DEPARTMENT OF
ENVIRONMENT AND NATURAL RESOURCES
Subject: ACKNOWLEDGMENT OF RECEIPT AND
REQUEST FOR ADDITIONAL INFORMATION
Stormwater Project No. SW8 000104
Leo Weston Apartments
Onslow County
Dear Mr. Weston:
The Wilmington Regional Office received a Stormwater Management Permit Application for Leo
Weston Apartments on January 5, 2000. A preliminary review of that information has determined that the
application is not complete. The following information is needed to continue the stormwater review:
The built upon area for the proposed sidewalks is given in the calculations as 2,425 square feet.
When measured on the plans an approximate area of 8,960 square feet of sidewalks is found.
Please verify and correct. If this amount of sidewalk is found to be the actual proposal, the
amount of surface area for the permanent pool will have to be increased due to the increase in
overall impervious surfaces. If modifications are needed to be made to the pond, please
resubmit revised plans and calculations.
2. I am returning the original copy of page 2 of 4 of the application to Mr. David Newsom, with
John L. Pierce & Associates, to make the needed corrections for the On -Site Buildings, Parking,
Sidewalks, and Dumpster Pads under Section III., number 6.
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. Weston
March 14, 2000
Stormwater Project No. SW8 000104
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 April 14, 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.
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 ofNCGS 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,
4E A - -/V1
Scott Vinson
Environmental Engineer
RSS/sav: S:\WQS\STORMWAT\ADDINFO\000104.MAR
cc: Wilmington Regional Office
David Newsom, P.E.

JOHN L. PIERCE - SURVEYING
LAND SURVEYING - LAND PLANNING - MAPPING
OFFICE:910-346-9800
FAX NO.:910-346-1210
E-MAIL: [e-mail]
John L. Pierce, P.L.S., L-2596
February 15, 2000
Mr. Scott Vinson
Stormwater Section
N.C. Department of Environment and Natural Resources
127 North Cardinal Drive
Wilmington, N.C.28405-3845
Re: Leo Weston Apartments (Stormwater Project SW8 000104)
Pine Valley Road, Jacksonville, N C.
Dear Mr. Vinson,
Post Office Box 1685
409 Johnson Blvd.
Jacksonville, N.C. 28541
In response to your Request for Additional Information dated February 11, 2000 for the reference project,
we submit the following:
Revised Stormwater Plan (2 copies)
Revised Detail Sheet (2 copies)
Revised Design Calculations (2 copies)
Revised Page 2 of 4 of Application (2 copies)
The revisions address each of the four items noted in your February 11 letter.
Should you have any questions, please call at [phone]
?urst
CST®9�N `{1RE C E 0 V ED wsom, PE
FEB 17 2000
..
u8
LOTS, FARMLAND AND WOODLAND SURVEYING - SITE PLANNING - SUBDIVISION LAYOUT - LAND DEVELOPMENT PLANNING
CONSTRUCTION SURVEYING - TOPOGRAPHIC SURVEYING AND MAPPING
Phase I Environmental Audit / Risk Assessment

State of North Carolina
Department of Environment
and Natural Resources
Wilmington Regional Office
James B. Hunt, Jr., Governor
Bill Holman, Secretary
Division of Water Quality
February 11, 2000
Mr. Leo Weston, Owner
Leo Weston Concrete Contractor, Inc.
643 Church Road
Pine Hill, NC 28572
ArMAA
NCDENR
Nc 2 CAROLINA 0ER TMENT OF
ENVIRONMENT AND NATURAL RESOURCES
Subject: ACKNOWLEDGMENT OF RECEIPT AND
REQUEST FOR ADDITIONAL INFORMATION
Stormwater Project No. SW8 000104
Leo Weston Apartments
Onslow County
Dear Mr. Weston:
The Wilmington Regional Office received a Stormwater Management Permit Application for Leo
Weston Apartments on January 5, 2000. 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. Delineate all wetlands on site, or note on the plans that none exist. Ne cve7/4 �g eN/hj
`✓- ems r) Ae, 22.
2. Please slope the sidewalk, that runs along both streets, so that the runoff is directed toward the
property. Show on sidewalk detail. 0 en2
3. The 6:1 sloped vegetated shelf around the fore bay is not required because of the amount of
dredging that is done within the fore bay. The vegetated shelf is only required around the entire
perimeter of the main pond. As long as the fore bay weir is flat and 10 feet wide, the flat top
of the weir will meet the vegetated shelf requirement for that side of the main pond. 04L.
4. On the second page of the calculations the drainage area is given as 142,006 SF or 3.26 Ac.
This should be the drainage area entered in the column under Section III, number 6 on page 2
of 4 of the application. Please verify by the copy of this that is included. 1;,,,rrecte
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 of North Carolina
Department of Environment
and Natural Resources
Wilmington Regional Office
James B. Hunt, Jr., Governor
Bill Holman, Secretary
Division of Water Quality
February 11, 2000
Mr. Leo Weston, Owner
Leo Weston Concrete Contractor, Inc.
643 Church Road
Pine Hill, NC 28572
NCDENR
NORM CAROLINA DEPARTMENT OF
ENVIRONMENT AND N. RAL RE50URCE5
Subject: ACKNOWLEDGMENT OF RECEIPT AND
REQUEST FOR ADDITIONAL INFORMATION
Stormwater Project No. SW8 000104
Leo Weston Apartments
Onslow County
Dear Mr. Weston:
The Wilmington Regional Office received a Stormwater Management Permit Application for Leo
Weston Apartments on January 5, 2000. 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. Delineate all wetlands on site, or note on the plans that none exist.
2. Please slope the sidewalk, that runs along both streets, so that the runoff is directed toward the
property. Show on sidewalk detail.
3. The 6:1 sloped vegetated shelf around the fore bay is not required because of the amount of
dredging that is done within the fore bay. The vegetated shelf is only required around the entire
perimeter of the main pond. As long as the fore bay weir is flat and 10 feet wide, the flat top
of the weir will meet the vegetated shelf requirement for that side of the main pond.
4. On the second page of the calculations the drainage area is given as 142,006 SF or 3.26 Ac.
This should be the drainage area entered in the column under Section III, number 6 on page 2
of 4 of the application. Please verify by the copy of this that is included.
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. Weston
February 11, 2000
Stormwater Project No. SW8 000104
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 11, 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.
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 ofNCGS 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,
ScottVinson
Environmental Engineer
RSS/sav: S:\WQS\STORMWAT\ADDINFO\000104.FEB
cc: Wilmington Regional Office
John Pierce, P.L.S.

JOHN L. PIERCE - SURVEYING
Land Surveying - Land Planning - Mapping
P.O. Box 1685
409 Johnson Blvd.
Jacksonville, N.C. 28541
Office: [phone] Fax No.: (910) 346-I210
E-Mail: [e-mail]
TO Ms. Linda Lewis
N.C. Department of Environment
and Natural Resources
127- North Cardinal Drive
Wilmington, NC 28405
WE ARE SENDING YOU
❑ Drawings ❑ Attached ❑
❑ Copy of Letter ❑ Prints ❑
❑ Change order ❑
,)��
�k Qn
letter of transmittal
DATE I lql6o 1011 NO.
ATTENTION
Linda Lewis
RE Wesonap`=mDUa] /T
no E C E I V E
V
Under separate cover via
D E M
PROd n ---the fe'.7owing items:
Plans ❑ Samples ❑ Specifications
COPIES
DATE
NUMBER
DESCRIPTION
2
Sets of plans
1
"Stormwater Management Permit Application Form"
1
"Wet Detention Basin Supplement"
1
"Stormwater Wet Detention Basin Design Calculations"
1
Check in the amount of four hundred twenty dollars($420.0
THESE ARE TRANSMITTED as checked below:
❑ For approval
❑ For your use
❑ As requested
❑ Approved as submitted
Cl Approved as noted
❑ Returned for corrections ,
❑ Resubmit copies for approval
❑ Submit copies for distribution
❑ Return corrected prints
❑ For review and comment
❑ For bids due 19
❑ Prints returned after loan to us
REMARKS Should you need any additional
information, please advise.
SIGNED