SW7960912_HISTORICAL FILE_20200512

1\
STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
SW 7C%VB8a
DOC TYPE
❑ CURRENT PERMIT
❑ APPROVED PLANS
HISTORICAL FILE
DOC DATE
OS
-
YYYYMMDD

tA/ti'(k6
ROY COOPER
Governor
MICHAEL S.'REGAN
Secretary
SRIAN WRENN
Acting mlrector
NORTH CAROLINA
Environmental Qua[tty
May 12, 2020
Bergman Filarecki Development, LLC
Attention: Mr. Arthur Bergman
905 Halstead Blvd., Unit 30
Elizabeth City, NC 27909
Subject: Stormwater Permit Renewal
Stormwater Management Permit SW7960912
Winchester Station
Pasquotank County
Dear Mr. Bergman:
A Division of Energy, Mineral, and Land Resources file review has determined that
Stormwater Permit SW7960912 for a stormwater treatment system consisting of three
wet detention ponds serving Winchester Station located at 905 Halstead Blvd. in
Elizabeth City, NC expires on November 15, 2020. This is a reminder that permit
renewal applications are due 180 days prior to expiration, We do not have a record of
receiving a. renewal application.
Please submit a completed permit renewal application along with a $505.00 fee for
permit renewal. Permit application forms for renewal can be found on our website at:
1aps: ,[/deq.nc,gov/abo /divisions/energ -mineral-la_Dd-resourcef=ergy-n neral-land_
rules/stormwater-nroeram/nost-construction. North Carolina General Statutes and the
Coastal Stormwater rules require that this property be covered under a stormwater
permit. Failure to maintain a permit subjects the owner to assessment of civil penalties
If you have questions, please feel free to contact me at [phone]. 1 will be glad to
discuss this by phone or meet with you. If you would like, l can e-mail you a copy of the
application form. You can request a copy by e-mailing me at [e-mail].
Sincerely,
Roger K. Thorpe
Environmental Engineer
��� � North Carolina Department of Environmental Quality 1 Division of Energy. Mineral and Land Resources
Washington Regional Office 1 943 Washington Square Mail I Washington. North Carolina 27889
+a +=-"7' .0� 252 946.6481

vat tt01 ?)M
f
o�0F WA7§ Michael F. Easley, Governor
William G. Ross Jr., Secretary
co r North Carolina Department of Environment and Natural Resources
Q -C Alan W. Klimek, P.E. Director
Division of Water Quality
July 17, 2006
Berg man-Filarecki Development, LLC
Attn: Mr. Arthur Bergman
786 Pitts Chapel Road
Elizabeth City, NC
Subject: Stormwater Permit SW7960912
Winchester Station
Pasquotank County
Dear Mr.Bergman:
This office received your request to renew the existing stormwater permit for Winchester Station
located at Elizabeth City, NC. Your request indicated that you do not have a copy of your Operation &
Maintenance Agreement for the (3) wet pond systems. In order to complete the renewal request, and
before the permit can be renewed, the following items must be addressed:
1) Submit the enclosed Wet Detention Basin Supplement Sheet.
2) Provide any information regarding changes to the treatment system.
The above requested information must be received in this office prior to August 17, 2006, or your
application will be returned as incomplete. The return of this project will necessitate resubmittal of all
required items including the application fee. If you need additional time to submit the required information,
please mail or fax your request for time extension to this office at the Letterhead address.
If you have questions, please feel free to contact me at [phone].
Sincerel
William J. Mo
Environmental Engineer
Washington Regional Office
cc: Hyman & Robey
Elizabeth City Planning/inspections
Washington Regional Office
pnc
NvCaro
,Aamrat
North Carolina Division of Water Quality Washington Regional Office Phone [phone] FAX [phone] Customer Service
Internet: h2o.enr.state.mus 943 Washington Square Mall, Washington, NC 27889 1.877.623-6748
An Equal OpportunitylAffirmadve Action Employer— 50% Recycledll0% Post Consumer Paper

Permit No.
(to be provided by DWQ)
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
`]VET DETENTION BASIN SUPPLEMENT
This form may be photocopied for use as an original
DWQ Stonnwater Management Plan Review:
A complete stormwater management plan submittal includes an application form, a wet detention basin
supplement for each basin, design calculations, and plans and specifications showing all basin and outlet
structure details.
1. PROJECT INFORMATION
Project Name:
Contact Person: Phone Number: ( }
For projects with multiple basins, specify which basin this worksheet applies to:
elevations
Basin Bottom Elevation
Permanent Pool Elevation
Temporary Pool Elevation
areas
Permanent Pool Surface Area
Drainage Area
Impervious Area'
volumes
Pennanent Pool Volume
Temporary Pool Volume
Forebay Volume
Other parameters
SA/DAI
Diameter of Orifice
Design Rainfall
Design TSS Removal'
-
ft. (floor of the basin)
ft. (elevation of the orifice)
k (elevation of the discharge structure overflow)
sq. ft. (water surface area at the orifice elevation)
ac, (on -site and off=site drainage to the basin)
ac. (on -site and off -site drainage to the basin)
cu. ft, (combined volitme of main basin and forebay)
cu. ft. (volume detained above the permanent pool)
cu. ft. (approximately 20% of'total v0111177e)
(surface area to drainage area ratio from 'DWQ table)
in. (2 to 5 day temporary pool draw -down required)
in.
% (minimum 85% required)
Form SWU-102 Rev 3.99 Page t of 4

Footnotes:
When using the Division SA/DA tables, the correct SA/DA ratio for permanent pool sizing should be computed based upon the
actual impervious % and permanent pool depth. Linear interpolation should be employed to determine the correct value for non-
standard table entries.
In the 20 coastal counties, the requirement for a vegetative filter may be waived if the wet detention basin is designed to provide
90% TSS removal. The NCDENR BMP manual provides design tables for both 85% TSS removal and 90% TSS removal.
II. REQUIRED ITEMS CHECKLIST
The following checklist outlines design requirements per the Stormwater Best Management Practices Manual
(N.C. Department of Environment, Health and Natural Resources, February 1999) and Administrative Code
Section: 15 A NCAC 2H .1008.-
Initial in the space provided to indicate the following design requirements have been met and supporting
documentation is attached. If the applicant has designated an agent in the Stormwater Management Permit
Application Form, the agent may initial below. If a requirement has not been met, attach justification.
Applicants Initials
a. The permanent pool depth is between 3 and 6 feet (required minimum of 3 feet).
b. The forebay volume is approximately equal to 20% of the basin volume.
c. The temporary pool controls runoff from the design storm event.
d. The temporary pool draws down in 2 to 5 days.
e. If required, a 30-foot vegetative filter is provided at the outlet (include non -erosive flow
calculations)
f. The basin length to width ratio is greater than 3:1.
g. The basin side slopes above the permanent pool are no steeper than 3:1.
h. A submerged and vegetated perimeter shelf with a slope of 6:1 or less (show detail).
is Vegetative cover above the permanent pool elevation is specified.
j. A trash rack or similar device is provided for both the overflow and orifice.
k. A recorded drainage easement is provided for each basin including access to nearest right-
of-way.
I. If the basin is used for sediment and erosion control during construction, clean out of the
basin is specified prior to use as a wet detention basin.
in. A mechanism is specified which will drain the basin for maintenance or an emergency.
III. WET DETENTION BASIN OPERATION AND MAINTENANCE AGREEMENT
The wet detention basin system is defined as the wet detention basin, pretreatment including forebays and the
vegetated filter if one is provided.
This system (check one) 0 does 0 does not incorporate a vegetated filter at the outlet.
This system (check one) 0 does 0 does not incorporate pretreatment other than a forebayy.
Form SWU-102 Rev 3.99 Page 2 of 4

C.�
Maintenance activities shall be performed as follows:
1. After every significant runoff producing rainfall event and at least monthly:
a. Inspect the wet detention basin system for sediment accumulation, erosion, trash accumulation,
vegetated cover, and general condition.
b. Check and clear the orifice of any obstructions such that drawdown of the temporary pool occurs within
2 to 5 days as designed.
2. Repair eroded areas immediately, re -seed as necessary to maintain good vegetative cover, mow vegetative
cover to maintain a maximum height of six inches, and remove trash as needed.
3. Inspect and repair the collection system (i.e. catch basins, piping, swales, riprap, etc.) quarterly to maintain
proper functioning.
4. Remove accumulated sediment from the wet detention basin system semi-annually or when depth is
reduced to 75% of the original design depth (see diagram below). Removed sediment shall be disposed of
in an appropriate manner and shall be handled in a manner that will not adversely impact water quality (i.e.
stockpiling near a wet detention basin or stream, etc.).
The measuring device used to determine the sediment elevation shall be such that it will give an accurate
depth reading and not readily penetrate into accumulated sediments. '
When the permanent pool depth reads feet in the main pond, the sediment shall be removed.
When the permanent pool depth reads feet in the forebay, the sediment shall be removed.
BASIN DIAGRAM
(fill in the blanks)
Permanent Pool Elevation
Sediment Removal El.
--------------VSediment Removal Elevation 75%
Bottom E!e -ation
--------------------------------------------- ------
FOREBAY
Bottom Elevation
MAIN POND
25%
5. Remove cattails and other indigenous wetland plants when they cover 50% of the basin surface. These
plants shall be encouraged to grow along the vegetated shelf and forebay berm.
6. If the basin must be drained- for an emergency or to perform maintenance, the flushing of sediment through
the emergency drain shall be minimized to the maximum extent practical.
Forni SWU-102 Rev 3.99 Page 3 of 4

7. All components of the wet detention basin system shall be maintained in good working order.
I acknowledge and agree by my signature below that i am responsible for the performance of the seven
maintenance procedures listed above. I agree to notify DWQ of any problems with the system or prior to 'any
changes to the system or responsible party.
Print name:
Title:
Address:
Phone:
Signature:_
Date:
Note: The legally responsible party should not be a homeowners association unless more than 50% of the lots have been sold and a
resident of the subdivision has been named the president.
a Notary Public for the State of ,
County of do hereby certify that
personally appeared before me this day of and acknowledge the due
execution of the forgoing wet detention basin maintenance-requireinents. Witness my hand and official seal,
SEAL
My cominission expires_
Form SWU-102 Rev 3.99 Page 4 of 4

Nficbael F. Easley, Governor
William G. Ross Jr., SeReta y
North Carolina Depattmrat of Envwonmed and Natural Resources
Alan W. Klimek, P.E. Director
Division of Water Quality
May 15, 2005
Mr. Arthur Bergman
2135 Rivershore Rd.
Elizabeth City, NC 27909
Subject: PERMIT RENEWAL
Stormwater Permit No. SW 7%W12
Winchester Station
Pasquotank
Dear Mr. Gary Filareski,
The Division of Water Quality issued a Coastal Stormwater Management Permit, Number SW 7960912
to West Seneca Inv & BEL prop. LLC. for Winchester Station on 12/23/1996. This permit expires on
12/2312006. Section .1003(h) of 15 A NCAC 2H .1000 (the stormwater rules) requires that applications
for permit renewals shall be submitted 180 days prior to the expiration of a permit and must be
accompanied by a processing fee, which is currently set at $420.00. However, if your permit has
already expired, you need to send in your.application for renewal as soon as possible. If this is still an
active project please complete and submit the enclosed renewal application in a timely manner. If this
project has not been constructed and a permit is no longer needed, please submit a request to have the
permit rescinded. If you have. sold the project, or are no longer the permittee, please provide the name,
mailing address and phone number of the person or entity that is now responsible for this permit.
Enclosed is a form for change of ownership, which should be completed and submitted if the property
has changed hands.
Your permit requires that upon completion of construction and prior to operation of the permitted
treatment units a certification of completion be submitted to the Division from an appropriate designer
for the system installed. This is to certify that the permitted facility has been installed in accordance with
the permit, the approved plans, specifications and supporting documentation. Please include a copy of
the certification with your permit renewal request and processing fee. Enclosed is a copy of a sample
certification.
You should be aware that failure to provide the Designer's Certification and the operation of a
stormwater treatment facility without a valid permit, are violations of NC General Statute 143-215.1 and
may result in appropriate enforcement action including the assessment of civil penalties of up to
$10,000 per day.
If you have any questions, please feel free to contact me or a member of the coastal stommwater staff with
DWQ at 252-946-6481.
Zg—e,
S' ly,
R i a �ersoc�
Surface Water Protection Section
Washington Regional Office
Enclosures
cc: Hyman & Robey
Washington Regional Office
North Carolina Division of Water Quality Internet wwwncwatett9u3litv.or¢ �TOne
943 Washington Square Mall Pbone (252) 94&6481 l�l C`aro na
Washingtm NC 27889 Fax [phone] ���/yt� I�
u i�

Michael F_ Easley, Governor
William G. Ross Jr, Searelary
North Carolina Department of Environment and Natural Resources
Alan W. Klimek, P-E_ Director
Division of Water Quality
May 3, 2005
Im
204 Binnacle Court '
Elizabeth City, NC 27909 a ��
Subject PERMIT RENEWAL AIL. 2796
e oo. SW 7960912
osqchester Station ?uo n '
Dear Mr. Gary Flareski,
The Division of Water Quality issued a Coastal Stormwater Management Permit, Number SW 7960912
to West Seneca Inv 8 BFL prop. LLC. for Winchester Station on 12/23119%. This permit expires on
12/23/2006. Section .1003(h) of 15 A NCAC 2H .1000 (the stormwater rules) requires that applications
for permit renewals shall be submitted 180 days prior to the expiration of a permit and must be
accompanied by a processing fee, which is currently set at $420.00. However, if your permit has
already expired, you need to send in your application for renewal as soon as possible. If this is still an
active project please complete and submit the enclosed renewal application in a timely manner. If this
project has not been constructed and a permit is no longer needed, please submit a request to have the
permit rescinded. If you have sold the project, or are no longer the permittee, please provide the name,
mailing address and phone number of the person or entity that is now responsible for this permit.
Enclosed is a form for change of ownership, which should be completed and submitted if the property
has changed hands_
Your permit requires that upon completion of construction and prior to operation of the permitted
treatment units a certification of completion be submitted to the Division from an appropriate designer
for the system installed. This is to certify that the permitted facility has been installed in accordance with
the permit, the approved plans, specifications and supporting documentation. Please include a Copy of
the certification with your permit renewal request and processing fee. Enclosed is a copy of a sample
certification.
You should be aware that failure to provide the Designer's Certification and the operation of a
stonmwater treatment facility without a valid permit, are violations of NC General Statute 143-215.1 and
may result in appropriate enforcement action including the assessment of civil penalties of up to
$10,000 per day.
If you have any questions, please feel free to contact me or a member of the coastal stormwater staff with
DWQ at 252-946-6481.
ZZncer9
e�e,
I r
Surface Water Protection Section
Washington Regional Office
Cc: Hyman & Robey
Washington Regional Office
North Carolina Division of WsW Quality hRaroet: Www+r.ncwalemualitv.org �TOne 7
943 Washington Square Mall Phone (252) 94&6U l 1 V of ihCarolina
Washington, NC 27M Fax [phone]jrf t/rjflly

litt p://-�+,�vw.secrelary. state.nc.us/corporations/Corp. asps'?Pi lcniId=
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Elaine F Marshall 'SPAR TMENT OF-1-1-1E
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FCC R<:x ??. 3?2 Ralei ph, Nti. 2%�626.0E�: 2 `919teC1722--XN?
Date: 5/15/2006
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Corporation Names
Name Name Type
NC WEST SENECA Legal
INVESTMENTS, L.L.C.
Limited Liability Company Information
SOSID:
0348339
Status:
Dissolved
Date Formed:
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Citizenship:
Domestic
State of Inc.:
NC
Duration:
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Registered Agent
Agent Name:
Registered Office
Address:
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Address:
Principal Mailing
Address:
Filarecki, Gary D
204 Binnacle Ct
Elizabeth City NC 27909
204 Binnacle Ct
Elizabeth City NC 27909
No Address
204 Binnack Dr
Elizabeth City NC 27909
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1 of 1 5/15/2006 1 1:41 AM

' -
ecal
PROJECT: Proposed Currituck Community
Center Complex
_ PROJECT NO.:
EC05-342G
Env mental
CLIENT: RR]viNi
PROJECT LOCATION: Currituck County, North Carolina
[ions, Inc.
LOCATION: See Attached Boring Location Plan
ELEVATION:
INA"
BORING I I]
LOG OF BORING
DRILLER: J.Brown
LOGGED BY:
G.Stalls, E:LT.^
DRILLING METHOD: Mud Rotary (wash)
DATE:
11-18-05
No. B-1 3
DEPTH TO - WATER> INITIAL: $ 3.5-Feet AFTER 24 HOURS: a CAVING> f-
e
a)
o TEST RESULTS
a 0Description
ro
E Z
a o
Plastic Limit
Liquid Limit
v Water Content - •
Penetration -
0
10 20 30 40
50 60 70
12-inches TOPSOIL
J J J
J J J
1
a1
1
2
....._.....:............:......:.:...:.....
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2
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r �' L �: !
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Figure
PAGE 1 of 1

Pasquotank County Tax Query Results
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Pasquotank COUnty
o
sir r,.1ti�o
Tax Parcel Database
PIN #
Owner
Property Location
Map Block
Flood
Lot
Map
8911 845956
B RGMAN, ARTHUR A
001122 SUNNY ACRES
DR
P61-67
8900
8922 551981
BERGMAN, ARTHUR A
&PATTI
00786 PITTS C
RD �--- ---
124-4❑
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8922
$923 [G$40077
& PATTI BERGMAN, ARTHUR A
02135 RIVERSHORE RD
P123A-26
8923
1 of 1 5/15/2006 11:56 AM

' ='•;
PROJECT: ,Proposed Currituck Community
Center Complex
_
PROJECT NO.: EC05-342G
eoE ral
.Env mental
CLIENT: RRMM
PROJECT LOCATION: Currituck Coun
North Carolina
tions, Inc.
LOCATION: See Attached Boring Location Plan .
ELEVATION: INA
LOG
OF BORING
DRILLER. J.Brown
LOGGED BY: G-Stalls, E.I.T.
DRILLING METHOD: Mud Rotary (wash)
DATE: 11-18-05
No. BMP-1
DEPTH TO - WATER> INITIAL: -:W- 4-Feet AFTER 24 HOURS:
-Tr CAVING> �
o
o
TEST RESULTS
�^
a v
Description
a
a d
E
N
o
Plastic Limit i i Liquid Limit
O -"�-
0
o m U
Water Content - a
2
o
Penetration -
10 20 30 40 50 60 70
:.....:.....:......:.....:........... :.....
0
24-inches TOPSOIL J J J
L
�
J J J
1
2
� •
A
2 J J J
2
2
1.6
...... '
=
. ..
Reddish Tan, moist, poorly graded fine to medium SAND (SP) to ' ;'a: i,
n
poorly graded fine to medium SAND (SP-SM) with silt, very loose a .I. r'
2
2
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- ..................,.....
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Boring terminated at 15 fir.
20
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30
35
.................
Figure
PAGE 1 of 1

WASHING ON�OFFICE
Winchester Station NOV 0 1 1996
Detention Pond Maintenance Agreement D. E.' m.
1. Operation and maintenance of the detention pond shall be the responsibility of the owner.
2. Operation of the system is automatic upon the occurrence of a rainfall event, however, there are several
maintenance items that must be attended to. First of all, there must be a lawn maintenance program where the grass
around the pond will be kept mowed during the growing season of the year. It is recommended for aesthetic reasons
that the Grass be mowed on at least a bi-weekly basis unless actual -rowing conditions indicate otherwise, in which
case the mowing frequency should be modified to suit site conditions.
3. The outlet structure must be inspected periodically for obstructions and trash build-up. This inspection should be
done approximately once every three months to include inspection of the orifice in the drawdown device to check for
algae or other trash plugging the orifice, inspection of the rip -rap filter around the riser section for trash, cut weeds or
grasses which may tend to plug the Filter, inspection of the trash rack for the same type of obstructions as with the
rip -rap filter and an inspection of the barrel section for any obstructions such as limbs or anything else that may have
passed the trash rack and pose a plugging problem. Any obstructions found shall be removed and hauled away from
the pond.
4. The forebay area must be checked for sediment deposits. especially during the first year of operation. The
frequency of the forebay inspections should be monthly until ail disturbed areas have been stabiiized or for a
minimum of b months, whichever is longer. Thereafter, inspect forebay area every three months. To perform this
inspection elevations should be taken along the perimeter of the rip -rap flow distribution/velociry dissipation pad.
The bottom should approximately T to 2-1/2' below the permanent pool elevation. If this is not the case the rip -rap
pad will need to be removed, the sediments excavated to the levels indicated in the details and the rip -rap pads
replaced.
5. It should be noted that in addition to the inspection frequencies recommended above, the pond and its
appurtenances should be inspected after any major storm event that may transport large amounts of debris to the
pond.
By our signature below, we, as owner/operator/mana;er/administrator of the proposed facility do hereby agree to
perform the above mentioned items and maintain the proposed facility in proper operating condition.
/4t_`iJ4 V9
Printed Name Printed Name
Signature Signature
Printed Name
Signature
Printed Narne
Signature

State of North Carolina
Department of Environment, WI,
Health and Natural Resources
Washington Regionat Office
6.0
James B. Hunt, Jr., Governor
Jonathan B. Howes, Secretary +�
West Seneca Inv. &
Attn: Mr. Arthur
204 Binnacle Court
Elizabeth City, NC
Dear Mr. Bergman:
DIVISION OF WATER QUALITY
December 23, 199E
BFL Prop., LLC
Bergman
27909
Subject: Permit No. SW7960912
Winchester Station
High Density Stormwater Project
Pasquotank County
The Washington Regional Office received the completed
Stormwater Application for the subject project on November 1, 1996.
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. SW7960912 dated December 23, 1996 to Mr. Arthur
Bergman.
This permit shall be effective from the date of issuance until
December 23, 2006 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,
permit are unacceptable, you h
adjudicatory hearing upon written'
following receipt of this permit.
of a written petition, conformin
Carolina General Statutes, and
Administrative Hearings, P.O. Draw
Unless such demands are made t
binding.
g
or limitations contained in this
ave the right to request an
request within thirty (30) days
This request must be in the form
to Chapter 150B of the North
filed with the Office of
er 27447, Raleigh, NC 27611-7447.
his permit shall be final and
1424 Carolina Avenue, Washington, NC 27889
An Equal Opportunity Affirmative Action Employer
Telephone [phone] FAX [phone]
50% recycled / 10% post -consumer paper

Mr. Arthur Bergman
December 23, 1996
Page Two
If you have any questions, or need additional information
concerning this matter, please contact Bill Moore at (919) 946-
6481, extension 264.
Sincerely,
4 Roger K. Thorpe
Water Quality Supervisor
Washington Regional Office
cc: Robey Associates
Pa�quotank County Inspections
Washington Regional Office
Central Files

State Stormwater Management Systems
Permit No. SW7960912
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT, HEALTH 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
West Seneca Inv. & BFL Prop., LLC
Pasquotank County
FOR THE
construction, operation and maintenance of stormwater management
systems in compliance with the provisions of 15A NCAC 2H.1000
(hereafter referred to as the nstormwater 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 for (3) wet
detention ponds to serve Winchester Station located at Elizabeth
City, NC.
This permit shall be effective from the date of issuance until
December 23, 2006, 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
voluAe 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 pages 4 and 5 of this
permit, the Project Data Sheet(s).
3. Approved plans and specifications for this project are
incorporated by reference and are enforceable parts of the
permit.
3

DIVISION OF WATER QUALITY
PROJECT DATA
Project Name:
Permit Number:
Location:
Applicant:
Mailing Address:
Application Date:
Water Body Receiving Stormwater
Runoff:
Classification of Water Body:
Pond/Basin Depth:
Permanent Pool Elevation:
Total Site Area:
Total Impervious Surfaces
Allowed:
Required Surface Area
(SA/DA):
Provided Surface Area:
4
Winchester Station
SW7960912
Pasquotank County
West Seneca Inv. &
BFL Prop., LLC
c/o Arthur Bergman
204 Binnacle Court
Elizabeth City, NC 27909
9/26/96; original
11/1/96; complete
Knobbs Creek
C
A - 4.5
feet
B - 5.0
feet
C - 4.0
feet
A - 7.0
ft MSL
B - 7.6
ft MSL
C - 7.5
ft MSL
3.12 acres
1.65 acres
A - 1648
square
feet
B - 1338
square
feet
C - 902
square
feet
A - 2048
square
feet
B - 1430
square
feet
C - 902
square
feet

Required Storage volume:
Provided Storage volume:
Controlling Orifice:
6084 cubic feet total
8319 cubic feet total
0.75 inch orifice pipe A & B;
0.50 inch orifice pipe C
4. No homeowner/lot owner/developer shall be allowed to fill in,
alter, or pipe any vegetative practices ( 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.
5. 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.
In addition, 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.
II. SCHEDULE OF COMPLIANCE
1. The permittee will comply with the following schedule for
construction and maintenance of the stormwater management
system.
a. The stormwater management system shall be constructed in
its entirety, vegetated and operational for its intended
use prior to the construction of any built -upon surfaces
except roads.
b. During construction, erosion shall be kept to a minimum
and any eroded areas of the system will .be repaired
immediately.
F1

2. The facilities must be properly maintained and operated at all
times. The approved Operation and Maintenance Plan must be
followed in its entirety and maintenance must occur at the
scheduled intervals.
3. The permittee shall at all times provide the operation and
maintenance necessary to assure the permitted stormwater
system functions at optimum efficiency 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.
4. Records of maintenance activities must be kept and made
available upon request to authorized personnel of DWQ. The
records will indicate the date, activity, name of person
performing the work and what actions were taken.
5. 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.
6. Upon completion of construction 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. Mail the Certification to the
Washington Regional Office, 1424 Carolina Avenue, Washington,
North Carolina, 27889, attention Division of Water Quality.
7. A copy of the approved plans and specifications shall be
maintained on file by the Permittee for a minimum of five
years from the date of the completion of construction.
III. GENERAL CONDITIONS
1. This permit is not transferable. In the event there is a
desire for the facilities to change ownership, or there is a
name change of the Permittee, a formal permit request must be
submitted to the Division of Water Quality accompanied by an
application fee, documentation from the parties involved, and
other supporting materials as may be appropriate. The
approval of this request will be considered on its merits and
may or may not be approved.
0

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 143-215.6(a) to 143-215.6(c).
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 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 23 rd day of December, 1996.
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
W `
'fC,Z' A. Preston Howa d, Jr., P.E., Director
Division of Water Quality
By Authority of the Environmental Management Commission
Permit Number SW7960912
7

Winchester Station
Mr. Arthur Bergman
Pasquotank County
Stormwater Permit No.-SW7960912
Designer's Certification
2, , as a duly
registered Professional Engineer in the State of North Carolina,
having been authorized to observe (periodically/weekly/full time)
the construction of the project,
for
(Project)
(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.
Signature
Registration Number
Date
8

State of North Carolina
Department of Environment,
Health and Natural Resources
Washington Regional Office
JameS S. Hunt, Jr., Governor
Jonathan B. Howes, Secretary
West Seneca Inv.,
Attn: Mr. Arthur
204 Binnacle Court
Elizabeth City, NC
Dear Mr.Bergman:
�EHNR
IN
ECEIVRD
DIVISION OF WATER QUALITX WASHGTON OFFICE
October 29, 1996 NOV o Z 1996
LLC
Bergman flM.
27909
Subject: Application No. SW7960912
Winchester Station
Pasquotank County
The Washington Regional Office acknowledges receipt of your
stormwater application and supporting information on September 26,
1996. This application has been assigned the number listed above.
A preliminary review of your project has been completed. The
following additional information is needed before a permit can be
issued:
-- stormwater runoff calculations
- narrative description of stormwater control measures
- signed operation and maintenance agreement
•/ The above information must be submitted within.30 days, or
your application will be returned as incomplete. If you have
questions, please feel free to contact me at [phone],
extension 264.
Sincerely,
William J. ore
Environmental Engineer
Washington Regional Office
cc: x,4bey Associates
Washington Regional Office
1424 Carolina Avenue, Washington, NC 27889 Telephone [phone] FAX [phone]
An Equal Opportunity Affirmative Action Employer 50% recycled / lo% post -consumer paper

ROBEY ASSOCIATES
ENGINEERING
CIVIL - SANITARY
SEAN G ROBEY, P.E.
Office [phone]
Fur [phone]
September 20, 1996
Mr. Bill Moore
Dept. of Natural Resources and Community Development
Water Quality Section
1424 Carolina Avenue = -
P.O. Box 1502 w.�sxrn r 11vvr:f; �
Washington, NC 27889
UP 2 6 1996
Subject: Stormwater Exemption Application
Winchester Station
Proj. 4360
Dear Mr. Moore:
Enclosed for your review and approval, please find the following items:
I . Two (2) copies of the "Streets, Grading and Sediment & Erosion Control Plan",
Sheet 2 and 6, of 6.
2. Two (2) copies of the Stormwater Exemption Application.
3. Check in the amount of $385.00 for the required fee.
Please note a sedimentation and erosion control plan has been submitted as of this date.
If you have any questions, please'do not hesitate to call.
Sincerely, Y k sA
.502-4- (L `l
Sean C. Robey, P.E.
cc: Mr. Arthur Bergman
Mr. Gary Filarecki
rile
enclosure(s)
Mailing Address: P. O. Box 2705 Elizabeth City, NC 27906-2705 Office : 523 S. Hughes Blvd. Elizabeth City, NC 27909

WASHINGTON OFF[CE
DIVISION OF ENVIROKKE'� Nar• MANAGEMENT ;SEP 2 6.1996
NORTH CAROLINA STORMWATER MANAGEMENT PERMIT APPLICATION
I. GENERAL INFORMATION:
1. Project Name: Winchester Station
2. Project Location: (County, State Road, address) _Rasauatank QQunty
SR 1152 - Halstead Blvd. Elizabeth CitX, NC
3. Owner'sName:West Seneca Inv.,LLC & BFL Prop., LLCPhone: 338-6519
4. Mailing Address: �� 4 Binnacle Court
City Elizabeth City State NC Zip 27909
5. Application Date: Aug. 8, 1996 Fee Submitted: $385 . 00
7. Nearest Receiving Stream: Knohbs Creek class: C SW
S. Project Description: Commercial complex containing 29 units
intended primarily for office use.
II. PERMIT INFORMATION
1. Permit No. (will be completed by DEM) : SW
`Q e" 9
—
2. Permit Type: XX New
Renewal
Modification (existing permit
no.)
3. Project Type: Low Density
XX
Detention
Infiltration
Other
4. Other State/Federal Permits/Approvals Required:
(Check appropriate blanks)
XX Sediment/Erosion Control
LAMA Major
XX 404 Permit
III. PROJECT BUILT UPON AREA
Drainage Drainage
Basin Basin
Breakdown of
Impervious Areas
Classification Q SW
Buildings
0.59 Ac
Allowable Impervious 30%
:toads
Total Project Area 1.12 Ar,
Parking
1.06 Ac
Proposed Impervious 1.65 AC
Other
$ Impervious Area 5 2 . 9%
Totals
1.65 Ac

IV. sTORMWATER TREAZKENT (Describe how runoff will be treated):
Starmwdter is cQllected through a combination of gra5s lined swales
with 3_:1 side slopes and an underground collection system and then
routed to one of three detention ponds.
V. DEED RESTRICTIONS AND PROTECTIVE COVENANTS
Deed restrictions and protective covenants are required for all low density projects and
all subdivisions prior to. the sale of any lot. Please see attachment A for specific
reauirements .
By your signature below, you certify that the recorded deed restrictions and
protective covenants for this project shall include all the items required by the
permit, that the covenants will be binding on all parties and persons claiming
under them, that they will run with the land, that the covenant cannot be changed
or deleted without concurrence from the State, and that they will be recorded
prior to the sale of any lot.
OWNER'S CERTIFICATION
I, Arthur Bergman _ certify that the
(Please print name clearly)
information included on this permit application form is correct, that the project will
be constructed in conformance with the approved plans, that the deed restrictions will
be recorded with all required permit conditions, and that to the best of my knowledge,
the proposed project complies with the requirements of 15A NCAC 2H.1000.
Y authorize the
behalf
k-4 /t,
owner /Authorrri/zec
AUTHORIZED AGENT
below named person or firm to submit stormwater plans on my
t
e
/S^ /6
Date
Person or Firm Name: t1 C.Robev-, p.E.___Robey Associates Enaineering
Mailing Address: p . 0. Box 2705
City Elizabeth City state NC zip 27906
Phone: ( 919 ) 335-1888
Please summit application, fee and plans to appropriate Regional Office.
(see attached map)
-2-

DIVISION OF ENVIRONWENTAL MANAGEMENT
NORTH CAROLINA STORMWATER MANAGEMENT PERMIT APPLICATION
GENERAL INFORMATION:
1. Project Name: Winchester Station
$EC£IVE;D
WASH"'T i-ON OFFICE
NOV 0 1 1996,
2. Project Location: (County, State Road, Address) Pasguotank__C9unty
SR 1152 - Halstead Blvd. Elizabeth Citv, NC
D. E. M.
3. Owner's Name -West Seneca Inv. ,LLC & BFL Prop. , LLCPhone: 338-6519
4. Mailing Address: 20A Binnacle Count. —
City Elizabeth City State NC zip 27909
5. Application Date: Aug. 8, 1996 Fee Submitted: $385.00
7. Nearest Receiving Stream: Knobbs Creek Class: C Sw
8. Project Description: Commercial complex_ containing 29 units
intended primarily for office use.
II. PERMIT INFORMATION
1. Permit No. (will be completed by OEM) : SLC) �Y& ram_
2. Permit Type: XX New Renewal
Modification (existing permit no.)
3. Project Type:
Low Density XX Detention
Infiltration Other
4. Other State/Federal Permits/Anprovals Required:
(Check appropriate blanks)
XX Sediment/Erosion Control CAMA Major XX 404 Permit
III. PROJECT BUILT UPON AREA
Drainage Drainage
Basin aasin
Classification C SW
Allowable Impervious 30%
Total Project Area 3.12 Ac
Proposed Impervious 1.65 Ac
% Impervious Area 52.9%
Breakdown of Imner7lous Areas
Buildings 0.59 Ac
Roads
Parking 1.06 Ac
Other
Totals 1.65 AC

IV. STORMWATER TREAT24E?T (Describe how runoff will be treated):
Starmwater ia collected through a combinat' of s ned swales
with 3:1 side slopes and an underground collection system and then
routed to one of three detention ponds.
V. DEED RESTRICTIONS AND PROTECTIVE COVENANTS
Deed restrictions and protective covenants are required for all low density projects and
all subdivisions prior to the sale of any lot. Please see Attachment A for sneciEic
reauirements.
By your signature below, you certify that the recorded deed restrictions and
protective covenants for this project shall include all the items required by the
permit, that the covenants will be binding on all parties and persons claiming
under them, that they will run with the land, that the covenant cannot be changed
or deleted without concurrence from the State, and that they will be recorded
prior to the sale of any lot.
OWNER'S CERTIFICATION
I, _Arthur Bergman _ certify that the
(Please print name clearty)
information included on this permit application form is correct, that the project will
be constructed in conformance with the approved plans, that the deed restrictions will
be recorded with all required permit conditions, and that to -the best of my knowledge,
the proposed project complies with the requirements of 15A NCAC 2H.1000.
T authorize the below named person or firm to submit stormwater plans on my
behalf. 7Z_ 2
Owner/Authorized Aqe t Signature and Title Date
AUTHORIZED AGENT
Person or Firm game: Span C. RQbey, P.E.obe Associates Engineering
Mailing Address: p . 0. BOX 2705
City Elizabeth CitX state NC zip 27906
Phone: [phone]
Please submit application, fee and plans to appropriate Regional Office.
(see attached map)
-2-

ROBEY ASSOC4TES
ENGINEERING
1VIL -
SEAN G ROBEY, P.E:
Office [phone]
Fax [phone]
�► NIIWiZ►M M
Project Description
Winchester Station is a proposed commercial complex consisting of 29
townhouse style office buildings in Elizabeth City, NC. The project is located on SR
1152 - Halstead Blvd approximately 350 ft southeast of the intersection of Walkers
Avenue and Halstead Blvd. in Pasquotank County. The project is located beside
Guardian Care Nursing Horne on the north, a vacant parcel on the south and wetland area
on the west.
A wetland delineation has been performed on the site and 'Mi. Henry Wicker of
the U.S. Army Corps of Engineers has approved the delineated line. Drainage for the site
is directed into one of three detention ponds located onsite. The detention ponds
discharge to the wetland area via grassed swales with rip -rap outlet protection. The
wetland area is the floodway of a large tributary of Knobbs Creek.
The disturbed area for the site is 2.59 AC., which is all land above the 404
wetland delineation line. The proposed built upon area for the complex is 1.65 AC.,
which consists of 0.59 AC. of building and 1.06 AC. of parking and sidewalk. Therefore
the resultant built -upon area is 52.9%.
Mailing Address: P. O. Box 2705 Elizaberh Cirv, NC 27906-2705 Office : 523 S. Hughes Blvd. Elizaberh City, NC 27909

TR-55 GRAPHICAL DISCHARGE METHOD VERSION 1.11
Project WINCHESTER STATION User: SCR Date: 08-21-96
County PASQUOTANK State: NC Checked: Date:
Subtitle: DETENTION POND A
RECEW}��1� NG7'OIVED
N�OFFfCE
Data: Drainage Area .86 * Acres
Runoff Curve Number 92 * NOV U 1 1996
Time of Concentration: 0.52 * Hours
Rainfall Type II
Pond and Swamp Area NONE �, E. M.
Storm Number 1 2 3 4 5 6 7
---------------------- ------ ------ ------ ------ ------ ------ ------
Frequency (yrs) 1 2 5 10 25 50 100
24-Hr Rainfall (in) 3.5 4 5.5 6.3 7.1 8.3 9.1
Ia/P Ratio 0.05 0.04 0.03 0.03 0.02 0,02 0.02
Used 0.10 0.10 0.10 0.10 0.10 0.10 0.10
Runoff (in) 2.64 3.12 4.58 5.36 6.15 7.34 8.13
,Unit Peak Discharge 0.810 0.810 0.810 0.810 0.810 0,810 0.810
(cfs/acre/in)
Pond and Swamp Factor 1.00 1.00 1.00 1.00 1.00 1,00 1.00
0.00i Ponds Used
Peak Discharge {cfs) 2 1 2 3 1 4 1 4 5 6
* - Value(s) provided from TR-55 system routines ✓ o�,
f'P Alov r ,) SA
Pam. Ar 7
r
op,

TR-55 CURVE NUMBER COMPUTATION VERSION 1.1
Project WINCHESTER STATION User: SCR Date: 08-21-96
County PASQUOTANK State: NC Checked: Date:
Subtitle: DETENTION POND A
Subarea : 0.86
-------------------------------------------------------------------------------
Hydrologic Soil Group
COVER DESCRIPTION A B C D
Acres (CN)
-------------------------------------------------------------------------------
FULLY DEVELOPED URBAN AREAS (Veg Estab.)
Open space (Lawns,parks etc.)
Good condition; grass cover > 750 - - .21(74) -
Impervious Areas
Paved parking lots, roots, driveways
Total Area (by Hydrologic Soil Group) LBD
-------------------------------------------------------------------------------
SUBAREA: 0.86 TOTAL DRAINAGE AREA: .86 Acres WEIGHTED CURVE NUMBER:92*
-------------------------------------------------------------------------------
* - Generated for use by GRAPHIC method

TR-55 Tc and Tt THRU SUBAREA COMPUTATION VERSION 1.11
Project WINCHESTER STATION User: SCR Date: 08-21-96
County PASQUOTANK State: NC Checked: Date:
Subtitle: DETENTION POND A
-------------------------------------------------------------------------------
Flow Type 2 year Length
Slope
Surface
n Area Wp Velocity Time
rain (ft)
(ft/ft)
code
(sq/ft) (ft) (ft/sec) (hr)
-------------------------------------------------------------------------------
Sheet 4 150
.005
F
0.512
Shallow Concent'd 50
.01
P
0.007
Time of Concentration = 0.52*
--- Sheet Flow Surface Codes ---
A Smooth Surface F Grass, Dense
B Fallow (No Res.) G Grass, Surmuda
C Cultivated < 20 o Res. H Woods, Light
D Cultivated > 20 o Res. I Woods, Dense
E Grass -Range, Short
* - Generated for use by GRAPHIC method
--- Shallow Concentrated ---
- -- - Surface Codes - - -
P Paved
U Unpaved

PERMANENT POOL DETENTION PONDS Robey Associates Engineering
DESIGN OF POND P. 0. Box 2705
Elizabeth Citv. NC 27909
Winchester Station (919)-335-1888
10 Yr, 24 Hr Storm 08/21 /96
DETENTION POND "A" Pale 1
SA/DA PERCENTAGES FOR 85% TSS REMOVAL WITH 30' VEGETATIVE FILTER
% 11APRV 3.0 FT 3.5 FT
4.0 FT
4.5 FT
5.0 FT
5.5 FT 6.0 FT
6.5 FT 7.0 FT
7.5 FT
10% 0.9 0.8
0.7
0.6
0.5
20% 1.7 L3
1.2
1.1
1.0
0.9
0.8
0.7
0.6
0.5
30% 2.5 2.2
1.9
l.8
1.6
1.5
i.3
1?
1.0
0.9
40% 3.4 3.0
2.6
2.4
2.1
1,9
1.6
1.4
1.1
1.0
50% 42 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
32
19
2.6
2.3
2.0
i.6
70% 6.0 5.2
4.5
4.1
3.7
3.1
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% 7.3 6.5
5.8
5.3
4.8
4.3
3.8
3.3
2.8
2.3
100% 8.2 T4
6.8
6.2
5.6
5.0
4A
3.8
3.2
2.6
WATERSHED AREA:
0.86
ACRES
WATERSHED % IMPERVIOUS:
76
0/-
PERMANENT POOL ELEVATION:
7
FT
DESIGN PERMANENT POOL DEPTH:
4.5
FT
SA/DA PERCENTAGE FACTOR:
4.4
%
{FROM ABOVE TABLE -TAKEN
FROM DES[GN OF STORM
WATER
'
CONTROL FACILITIES WORKSHOPMANUAL - PE. IC 1988)
POND SURFACE AREA REQ'D:
1648
SF
J•
FOREBAY AREA:
330
SF
AT WIDTH = 0.5 LENGTH,
WIDTH =
28.7081
LF
(BASED
UPON MINIMUM
SURFACE
AREA)
LENGTH =
57.4162
LF
Use these dimensions:
WIDTH
32
LF
LENGTH
64
LF
VOLUME OF I" RAINFALL
AREA OF ROOFS: 0.28 AC
AREA OF PARKING/CONCRETE: 0.37 AC
AREA OF GREEN AREAS: 0.21 AC
VOLUME OF RUNOFF / 2444- 8F-,
STORAGE DEPTH FOR MINIMUM AREA =
ELEVATION OF I" RAINFALL = 8.19
Normal Pool Elevation
7
VOL (CF)=[(ROOF*1.0)+(PARKING*.95)+(GRASS*0.2}]*43,560/12
L l9 FT

DRAWDOWN - WATER QUALITY
Q(2 DAYS) = 0.01415 CFS
Q(5 DAYS) = 0,00566 CFS
l" RUNOFF STAGE 1.19 FT
DEPTH OF DRAWDOWN DEVICE BELOW OUTLET 1.5 FT
I" RUNOFF OUTLET DEVICE: 0.69866 INCH DIA DOLE A={Q/(Cd*SQRT(2vh))]* 144
Rad.=SQRT(A/Pl)
� Dia.=2*Rad.
DIAMETER OF HOLE TO USE: �0.751i��i DIAMETER /
i" STORM RUNOFF DRAWDOWN TIME 2.479;�DA�S 11
INFLOW HYDROGRAPH
Return Year Storm 10 Yr
Qp = Peak Discharge = 4 cfs
Tc = Time fo Concentration = 30 min
Calculation of Tp (Time to Peak)
From SCS NEH 4 , pace 15-7 Eqn. 15.4
Las Time (L) _ (1^0.8*(Sfl)^0.7)/(1900*Y^0.5) for Lin Hrs
where: 1 = hydraulic length of watershed (ft)
S = (l 000/CN)-10
CN = approximately same CN from TR-55
Y = avg. watershed land slope in %
S = (1000/CN)-10 = 0,86957
L= 0.07553 hrs
From SCS NEH 4, page 16-7 Eqn. 16.7
Tp=D/2-L
where : D = unit of excess duration rainfall (hrs)
L = Lag Time (hrs)
From SCS NEH 4 page 16-8 Eqn, 16.12
D 0.133 tc
where: Tc = Time of Concentration (hrs) - (See Tr-55 Printout)
THEREFORE: D = 0.0665 hrs
Tp = 0.10879
hrs
= 6.52663
min
Volume under Hydrograph = 1.39 *
Qp * Tp =
2177.28
Cubic Feet
Page 2
240 ft
0.86957
92
0.75 %

Inflow Hydrograph
SCS Dimensionless Hydrograph
Time Discharge Time Discharge Volume
Ratio Ratio hr cts cf
0.00
0.00
0.00
0.10
0.03
0.01
0.20
0.10
0.02
0.30
0.19
0.03
0.40
0.31
0.04
0.50
0.47
0.05
0.60
0.66
0.07
0.70
0.82
0.08
0.80
0.93
0.09
0.90
0.99
0.10
1.00
1.00
0,11
1.10
0.99
0.12
1.20
0.93
0.13
1.30
0.86
0.14
1.40
0.78
0.15
1.50
0.68
0.16
1.60
0.56
0.17
1.70
0.46
0.18
1.80
0.39
0.20
1.90
0.33
0.21
2.00
0.28
0.22
2.20
0.21
0.24
2.40
0.15
0.26
2.60
0.11
US
2.80
0.08
0.30
3.00
0.06
0.33
3.20
0.04
0.35
3.40
0.03
0.37
3.60
0.02
0.39
3.80
0.02
0.41
4.00
0.01
0.44
4.50
0.01
0.49
5.00
0.00
0.54
Volume under hydrograph =
0
0
0
I
l
2
3
3
4
4
4
4
4
3
3
3
2
2
2
l
l
1
1
0
0
0
0
0
0
0
0
0
0
16
30
49
74
103
128
146
155
157
155
146
135
122
M
88
72
61
52
44
65
46
34
24
17
13
9
7
5
3
4
0
2068 of
Page 3
Based upon runoff volume = 2177.28 cf Depth req'd for minimum area = 1.06313 ft

STAGE STORAGE FUNCTION OF POND
Page 4
(FOR RECTANGULER DETENTION POND ONLY)
Pond Side Slope (M) =
3
Minimum surface area taken at normal water level
BASIN AREA INCR ACCUM
VOLUM VOLUM STAGE In
s
In Z
Z est Elevation
S Z
sf cf cf ft
2048 0 0 0 Surface area
at normal pool
7
2345 1098 1098 0.5
7.00
-0.69
0.49
7.5
2660 1251 2350 1
7.76
0.00
0.96
8
V0�
�(ar
2993 1413 3763 1.3
8.23
0.41
1.44
D
144S �.
3344 1584 5347 2
8.58
0.69
1.95
9
3713 1764 7111 2.5
8.87
0.92
2.50
9.5
4100 1953 9065 3
9.11
1.10
3.09
l0
4505 2151 11216 3.5
9.33
1.25
3.71
10.5
4928 2358 13574 4
9.52
1.39
4.38
11
5369 2574 16148 4.5
9.69
1.50
5.09
11.5
5828 2799 18948 5
9.85
1.61
5.85
12
Regression Output:
Constant 9.34346
Ks = S/Z^b = 2474.34
Std Err of Y Est 0.00969
R Squared 0.99962
No. of Observations 7
Degrees of Freedom 5
X Coefficient(s) L 15215 = b
Std Err of Coef. 0.01009
FOR VERTICAL SIDED DETENTION POND SET b=0, AND Ks = SURFACE AREA (SF)
STAGE DISCHARGE
(FOR RISERIBARRELL SPILLWAY
W EMERGENCY WEIR)
RISER
Dr =
30
Riser Dia. (in)
Etop =
8.25
Elev. Top Riser (ft) 8.06
Cwr -
3.33
Riser weir coeff
Cdr =
0.60
Riser orifice coeff
H l n =
0
Number of Holes
Hld _
0
Hole Dia. (in)
EHI -
15.00
Elev. Holes (1)
1-12n =
0
Number of Holes
H2d =
2
Hole Dia. (in)
EH2 =
15.00
Elev. Holes (2)
Han =
0
Number of Holes
Had =
2
Hole Dia. (in)
EH3 =
15.00
Elev. Holes (3)
BARREL:
Db =
15
Barrel Dia. (in)
Einv =
7.00
Elev Invert Barrel (ft) Barrell Adjustment Factor 0
Cdb =
0.60
Barrel orifice coeff

EMERGENCY WEIR
Page 5
Cw
-
3
Weir coeff
Ecr
-
1 5.00
Elev weir coeff (ft)
Lw
-
20
Weir Len-th (ft)
Riser
Riser
Riser
Elevation
Hole
Hole
Hole
Riser Riser
Barrel
Principal
EmerFcv
Total
(1)
(2)
(3)
(weir) (orifice)
Spillway
Weir
Outflow
7.00
0.0
0.0
0.0
0.0
0.0
0.0
0.00
0.0
0.00
7.00
0.0
0.0
0.0
0.0
0.0
0.0
0.00
0.0
0.00
7.00
0.0
0.0
0.0
0.0
0.0
0.0
0.00
0.0
0.00
7.02
0.0
0.0
0.0
0.0
0.0
0.0
0.00
0.0
0.00
7.03
0.0
0.0
0.0
0.0
0.0
0.0
0.00
0.0
0.00
7.06
0.0
0.0
0.0
0.0
0.0
0.1
0.00
0.0
0.00
7.10
0.0
0.0
0.0
0.0
0.0
0.1
0.00
0.0
0.00
7.15
0.0
0.0
0.0
0.0
0.0
0.2
0.00
0.0
0.00
721
0.0
0.0
0.0
0.0
0.0
0.3
0.00
0.0
0.00
7.27
0.0
0.0
0.0
0.0
0.0
0.5
0.00
0.0
0.00
7.34
0.0
0.0
0.0
0.0
0.0
0.7
0.00
0.0
0.00
7.40
0.0
0.0
0.0
0.0
0.0
0.8
0.00
0.0
0.00
7.46
0.0
0.0
0.0
0.0
0.0
1.1
0.00
0.0
0.00
7.52
0.0
0.0
0.0
0.0
0.0
1.3
0.00
0.0
0.00
7.57
0.0
0.0
0.0
0.0
0.0
1.4
0.00
0.0
0.00
7.62
0.0
0.0
0.0
0.0
0.0
1.6
0.00
0.0
0.00
7.66
0.0
0.0
0.0
0.0
0.0
1.8
0.00
0.0
0.00
7.69
0.0
0.0
0.0
0.0
0.0
1.9
0.00
0.0
0.00
7.72
0.0
0.0
0.0
0.0
0.0
2.0
0.00
0.0
0.00
7.74
0.0
0.0
0.0
0.0
0.0
2.1
0.00
0.0
0.00
7.76
0.0
0.0
0.0
0.0
0.0
2.2
0.00
0.0
0.00
7.79
0.0
0.0
0.0
0.0
0.0
2.4
0.00
0.0
0.00
7.81
0.0
0.0
0.0
0.0
0.0
2.5
0.00
0.0
0.00
7.83
0.0
0.0
0.0
0.0
0.0
2.5
0.00
0.0
0.00
7.84
0.0
0.0
0.0
0.0
0.0
2.6
0.00
0.0
0.00
7.85
0.0
0.0
0.0
0.0
0.0
2.6
0.00
0.0
0.00
7.86
0.0
0.0
0.0
0.0
0.0
2.7
0.00
0.0
0.00
7.96
0.0
0.0
0.0
0.0
0.0
2.7
0.00
0.0
0.00
7.86
0.0
0.0
0,0
0.0
0.0
2.7
0.00
0.0
0.00
7.87
0.0
0.0
0.0
0.0
0.0
2.7
0.00
0.0
0.00
7.87
0.0
0.0
0.0
0.0
0.0
2.7
0.00
0.0
0.00
7.87
0.0
0.0
0.0
0.0
0.0
2.7
0.00
0.0
0.00
7.87
0.0
0.0
0.0
0.0
0.0
2.7
0.00
0.0
0.00

Page 6
ROUTING OF INFLOW HYDROGRAPH THROUGH POND AND OUTFLOW DEVICE
Total
Riser
Riser
Riser
Barrel
Enierg
Time
Inflow
Storage
Stage
Outflow
Holes
(weir)
(orifice)
Spillway
t(hr)
cfs
cf
Elevation
cfs
(1-'2-3)
cfs
cfs
cfs
cfs
cfs
0.000
0
0
7.00
0.00
0.00
0.00
0.00
0.00
0.00
0.011
0
0
7.00
0.00
0.00
0.00
0.00
0.00
0.00
0.022
0
4.69917
7.00
0.00
0.00
0.00
0.00
0.00
0.00
0.033
1
20.3631
7.02
0.00
0.00
0.00
0.00
0.01
0.00
0.044
1
50.1245
7.03
0.00
0.00
0.00
0.00
0.02
0.00
0.054
2
98.6826
7.06
0.00
0.00
0.00
0.00
0.05
0.00
0.065
3
172.303
7.10
0.00
0.00
0.00
0.00
0.10
0.00
0.076
3
275.685
7.15
0.00
0.00
0.00
0.00
0.19
0.00
0,087
4
404.129
7.21
0.00
0.00
0.00
0.00
0.32
0.00
0.098
4
549.803
7.27
0.00
0.00
0.00
0.00
0.47
0.00
0.109
4
704.876
7.34
0.00
0.00
0.00
0.00
0.65
0.00
0.120
4
861,515
7.40
0.00
0.00
0.00
0.00
0.85
0.00
0.131
4
1016.59
7.46
Mo
0.00
0.00
0.00
1.05
0.00
0.141
3
1162.26
7.52
Mo
0.00
0.00
0.00
1.25
0.00
0.152
3
1296.97
7.57
0.00
0.00
0.00
0.00
1.44
0.00
0.163
3
1419.15
7.62
0.00
0.00
0.00
0.00
1.62
0.00
0.174
2
1525.67
7.66
0.00
0.00
0.00
0.00
1.78
0.00
0.185
2
1613.38
7.69
0.00
0.00
0.00
0.00
1.92
0.00
0.196
2
1685.44
7.72
0.00
0.00
0.00
0.00
2.03
0.00
0.207
1
1746.53
7.74
0.00
0.00
0.00
0.00
2.13
0.00
0.218
1
1798.22
7.76
0.00
0.00
0.00
0.00
2.21
0.00
0.239
1
1885.94
7.79
0.00
0.00
0.00
0.00
2.35
0.00
0,261
l
1950.78
7.81
0.00
0.00
0.00
0.00
2.46
0.00
0.283
0
1996.84
7.83
0.00
0.00
0.00
0.00
2.53
0.00
0.305
0
2030.36
7.84
0.00
0.00
0.00
0.00
2.59
0.00
0.326
0
2054.48
7.85
0.00
0.00
0.00
0.00
2.63
0.00
0.348
0
2071.71
7.86
0.00
0.00
0.00
0.00
2.66
0.00
0.370
0
2084.24
7.86
0.00
0.00
0.00
0.00
2.68
0.00
0.392
0
2093.33
- 7.86
0.00
0.00
0.00
0.00
2.69
0.00
0.413
0
2099.9
7.87
0.00
0.00
0.00
0.00
2.70
0.00
0.435
0
2104.6
7.87
0.00
0.00
0.00
0.00
2.71
0.00
0.489
0
2113.22
7.87
0.00
0.00
0.00
0.00
2.73
0.00
0.544
0
2117.13
7.87
0.00
0.00
0.00
0.00
2.73
0.00
7.87343 = maximum stage elevation
0 = maximum discharge

4
4
3
3
m
rn 2
(U
in
L
U
2
L
1
0 d(4
0.000
A Chart 1
Proposed Site for Winchester Station - Pond "A"
Elizabeth City, NC
10 yr STORM
0.100 0.200 0.300 0.400 0.500
Time (hrs)
0.600
■ ' INFLOW (cfs) i
OUTFLOW (cfs)
Page 1

state of North Carolina
Department of Environment,
Health and Natural Resources
Washington Regional office
James S. Hunt, Jr., Governor
Jonathan B. Howes, Secretary
West Seneca Inv.,
Attn: Mr. Arthur
204 Binnacle Court
Elizabeth City, NC
Dear Mr.Bergman:
DIVISION OF WATER QUALITY
October 29, 1996
LLC
Bergman
27909
Subject: Application No. SW7960912
Winchester Station
Pasquotank County
The Washington Regional Office acknowledges receipt of your
stormwater application and supporting information on September 26,
1996. This application has been assigned the number listed above.
A preliminary review of your project has been completed. The
following additional information is needed before a permit can be
issued:
stormwater runoff calculations
narrative description of stormwater control measures
- signed operation and maintenance agreement
The above information must be submitted within. 30 days, or
your application will be returned as incomplete. If you have
questions, please feel free to contact me at [phone],
extension 264.
Sincerely,
William J. ore
Environmental Engineer
Washington Regional Office
cc: Robey Associates
,,Washington Regional Office
1424 Carolina Avenue, Washington, NC 27889 Telephone [phone] FAX [phone]
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