SW7970912_HISTORICAL FILE_20071019

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
SW
DOC TYPE
❑ CURRENT PERMIT
❑ APPROVED PLANS
HISTORICAL FILE
❑ COMPLIANCE EVALUATION INSPECTION
DOC DATE
=a)/ 7`�q
YYYYMMDD

0A TF9in�aRO
O� W QG Michael F. Easley, Governor
William G. Ross Jr, Secretary
_ - A r North Carolina Department of Environment and Natural Resources
p Y Coleco H. Sullins, Director
" V Division of Water Quality
October 19, 2007
Mr. William N. Alexander, Jr.
Rocky Run Properties;LLC
P.O. Box 15409
New Bern, NC 28561
Subject: Permit No. SW7970912 Renewal
McCarthy Wellons Professional Center
High Density Stormwater Project
Craven County
Dear Mr. Alexander:
The Washington Regional Office received a completed Stormwater Renewal application for the subject
project on August 13, 2007. Staff review of the files and an on site inspection has determined that the project will
comply with the Stormwater Regulations set forth in Title 15A NCAC 2H.1000. We are forwarding Permit No.
SW7970912 dated October 19, 2007 to Rocky Run Properties, LLC for a wet detention pond to serve the McCarty
Wellons Professional Center located at 3300 Wellons Blvd. in New Bern, NC.
This permit shall be effective from the date of issuance until October 19, 2017 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. The issuance of this permit does not resolve any
previous violations of the stormwater rules or permit conditions.
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, 6714 Mail Service Center, Raleigh, NC 27699-6714. 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 Roger
Thorpe or me at [phone].
incerely, _
AI Hod e, i pervisor
Surface Water Protection Section
Washington Regional Office
cc: Robert M. Chiles, PE
ashington Regional Office
Central Files
North Carolina Division of Water Quality Internet: uM.10cme1'0ua16.011 One
943 Washington Square Mall Phone [phone] NorthCarohna
Washington, NC 27889 Fax [phone] Naturally

DIVISION OF WATER QUALITY
PROJECT DATA
Project Name:
McCarthy Wellons Professional Center
Permit Number:
SW7970912
Location:
Craven County
Applicant:
Rocky Run Properties, LLC
Mailing Address:
P.O. Box 15409
New Bern, NC 28561
Application Date:
8/13/2007
Receiving Stream:
UT to Trent River
Classification of Water Body:
SC - NSW
Total Site Area:
2.0 ac
Total Impervious allowed:
1.2 ac
Wet Pond Depth:
4.0 ft
Required Storage Volume:
4,356 cf
Provided Storage Volume:
6,906 cf
Required Surface Area:
3,311 sf
Provided Surface Area:
4,968 sf
Controlling Orifice:
1.0 inch

State Stornwater Management Systems
Permit No. SW7970912
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
STATE STORMWATER MANAGEMENT PERMIT
HIGH DENSITY DEVELOPMENT
In accordance with the provisions of Article 21 of Chapter 143, General Statutes of North Carolina as amended, and
other applicable Laws, Rules, and Regulations
PERMISSION IS HEREBY GRANTED TO
ROCKY RUN PROPERTIES, LLC
McCarthy Wellons Professional Center
Craven County
FOR THE
continued, operation and maintenance of stormwater management systems in compliance with the provisions of 15A
NCAC 21-1.1000 (hereafter referred to as the "stormwater rulesl 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 a wet detention pond to serve the McCarthy Wellons Professional
Center located at 3300 Wellons Blvd. in New Bern, NC.
This permit shall be effective from the date of issuance until October 19, 2017 and shall be subject to the following
specified conditions and limitations:
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
2 of this permit, the Project Data Sheet.
3. A maximum of 1.2 acres of built upon area is allowed on this 2.0 acre site.
4. All stormwater collection and treatment systems must be located in either dedicated common areas or
recorded easements. The final plats for the project will be recorded showing all such required easements, in
accordance with approved plans.
5. Approved plans and specifications for this project are incorporated by reference and are enforceable parts of
the permit.

�i
6. No homeownedlot 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.
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. Transferof 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.
8. 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.
SCHEDULE OF COMPLIANCE
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.
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, 943 Washington Square Mall,
Washington, North Carolina, 27889, attention Division of Water Quality.

A copy of the approved plans and specifications shall be maintained on file by the Permittee for the life of the
project.
Ill. GENERAL CONDITIONS
1. This permit is not transferable. In the event there is a desire for the facilities to change ownership, or there is
a name change of the Permittee, a formal permit request must be submitted to the Division of Water Quality
accompanied by an application fee, documentation from the parties involved, and other supporting materials
as may be appropriate. The approval of this request will be considered on its merits and may or may not be
approved.
2. Failure to abide by the conditions and limitations contained in this permit may subject the Permittee to
enforcement action by the Division of Water Quality, in accordance with North Carolina General Statute 143-
215.6(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 federaD
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.
6. The Permittee, at least six (6) months prior to the expiration of this permit, shall submit in writing a request for
an extension along with appropriate application fee.
Permit issued this the 19 th day of October 2007.
CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
for Coleen H. Sullins, Director
Division of Water Quality
By Authority of the Environmental Management Commission
Permit Number SW7970912

Michael F. Easley, Governor
William G. Ross, Jr., Secretary
North Carolina Department of Environment and Natural Resources
Alan W. Klimek, P.E. Director
Division of Water Quality
SURFACE WATER PROTECTION SECTION
COASTAL STORMWATER PERMIT RENEWAL APPLICATION FORM
I. CURRENT PERMIT INFORMATION:
1. Stormwater Management Permit Number: SW r? C)91 Z AUG 1 3 2001
r
2. Permit Holder's name: TQc_q (�t'rt zo�ep-rlES LLC ;A
I .
r
3. Signing official's name: LlrJ Al.cwN>yoE.2 dTitle: I\KA&Ac,ElL
(person legally responsible for permit)
4. Mailing address: '-Po 3ok /510y City:
t5Z
State: rJ L ZipCode: Z46 b 1 Phone: 637 515q FAX:
(Area Code and Number) _(area Code and Number)
5. Project Name: _P/ZOFE55lo/\1AL cc-Nrc2
6. Location of Project: (street address) 33�0- atLo�sL vo
/11
Directions t0 Project (from nearest major intersection)�'fLe,-. ion) ,0'31 -7 L7.L CJ 2-yn , aN I-'�,
11
,NAcCAfLTK,l �1 v� , �zF��� �ti���itznl t r�Iv,� No Lrr+ (&�� o� rbzoCr,4-VrD
-Jg 6LV I> 'is FhZsT ST. D u K f c, 4T: -.J�l rE l S 0,v W CLLo,.1 s .
PERMIT INFORMATION
Specify the type of stormwater treatment (wet pond, Infiltration, etc.).
List any changes (from project that was originally apprcved, attach additional pages if ne?ded)
- -_• .— .... -- --r----
CAra_ii -CA) SP(, i wAN - n( uT c-,DNc,Zt_T L­131?(_D�, 7- A I�
DF C0&3C'zCTc=
3. Do you have a copy of the original Operation and Maintenance Agreement? Yes —No
Applicant's Certification:
I, (print) W1I .)_iJ
permit renewal p Ici
Signature:
that the information included on this
correct and complete.
a
Submit this comp ' form along with an application fee of $$420.00 and a copy of the
designer's certific ion to the address listed below.
fdorh Cardin DOision of WaetNal;ry 943 Wasnington Square Matt Phone [phone]i481 Customer Seance I.E77o23S748 po
Washington Regional Office 'Wilmington, NC 27889 FAX [phone]t5 Inlemet h2oenr.sae
ie.nc.us NorthiCarolina
An -anal O000wnitvlABtrma�ve Acw=rn over -:A% R8c:ded!00A Post "Mu n. rPacer .,Va1uri71&

P.O. BOX 15409
NEW BERN. NC 28561-5409
CHECK
\MOUNT r
FIRST OTIZENS `
BANK
11800130311. I:OS3 L003001:00 i 1 L 244BBL S",

�'' ROBERT M. CHILES, P.E.
ENGINEERS, CONSULTANTS
MARINE SURVEYORS
417-A BROAD ST.
P.O. BOX 3496
NEW BERN, NORTH CAROLINA 28564-3496
August 9, 2007_ . __
Certified Mail Receipt No. 7006 2760 0003 3520 3376 1 T ( C I ( r`�� J
Mr. Al Hodge, Regional Supervisor AUG 1 3 2007
NCDENR, DWQ
943 Washington Square Mall I f f `f (0 �,
Washington, N. C. 27889 l�k 1 ``F"s
Re: NCDENR Stormwater Permit Number SW 7970912
�1
�J
BUSINESS : 252-637-4702
FAX: [phone]
office @robedmc hilespe. c om
mik eri ce Cro bert me hilespe. com
102 s l 9nd
Enclosures: (1) NCDENR, DWQ, Coastal Stormwater Permit Renewal Application Form
(2) Wet Detention Basin Operation and Maintenance Agreement
(3) Engineer's Certification
(4) Check for $420 (fees)
Dear Mr. Hodge:
On behalf of our client Rocky Run Properties UE v
for review and approval.
Enclosure 1 requestsrei
Professional Center on Novem
r 'sw
We were unable to loc
office's files. In order to provid
brought maintenance/repair c
repairs. T
The plans for the pert
Swale, and a concrete heat
vegetated earthen berm fat
headwall. Other than these
the approved plans and is c
ilI,of the stormw
I, 1997.
T previously issue
;erns to the own,
system indicate
the spillway and a
r
4 f
,e;submit the enclosed documents and fees
;r permit oric
designer's c
av`eperform,
s ottention 4,
ihally, issued for the McCarthy Wellons
1
i
-rtification for the project within our
d ci number of onsite inspections,
Ind have inspected the completed
,
lway between the pond and the outlet
t swgle:, Our inspections reveal that a
;merit is,used instead of the concrete
Tent appears to be unchanged from
I ith the permitted plans.
Should you require additional infarmation_'or.have'on questions, please contact us at your
convenience.
Very truly yours,
ROBERT M. CHILES, P.E.
Michael L. Rice, P.E.
cc: Mr. William N. Alexander, Jr., Manager, Rocky Run Properties, LLC
MECHANICAL, CIVIL, AND MARINE ENGINEERING
COMMERCIAL, INDUSTRIAL, MARINE. AND RAILROAD FACILITIES DESIGN
MARINE HYDROGRAPHIC AND LAND SURVEYS
FORENSIC ENGINEERING AND FAILURE ANALYSIS BOUNDARY SURVEYS AND MAPPING SERVICE

AUG 1 3 20u7
,tn'Lrr1 t`�
Permit No. SV1'7970912
WET DETENTION BASIN OPERATION AND MAINTENANCE AGREEMENT
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 3_5 feet in the main pond, the sediment shall be removed.
When the permanent pool depth reads 1_5 feet in the forebay, the sediment shall be removed.
BASIN DIAGRAM
(fill in the blunt)
Penn anent Pool Elevation 24.5
Sediment Ren oval El. 21.5 75 0
-------------- -- Sediment Removal Elevation 20.0 75%
Bottom Ele •ation 21.0 ^_% ------------------------ ------------------ ------
Bottom Elevation 19•0 �54%
FOREBAY MAIN POND
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 benn.
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.

7. All components of the wet detention basin system shall be maintained in good working order.
8. Remove all trees and heavy woody vegetation from the basins and dike walls.
I acknowledge and agree by my signature below that I am responsible for the performance of the eight
maintenance procedures listed above. 1 agree to notify DWQ of any problems with the system or prior to
any changes to the system or responsible party.
Print name: Mr. William N. Alexander. Jr.
Title:
Address:
ems/
Note: The legally responsible y should not be a homeowners association unless more than 50% of the lots have been sold
and a resident of the subdivi-, as been named the president.
I, F�, a Notary Public for the State of ND,e?H
County of 4::-,C'/4VE-k) do hereby certify that N. 1469AA%Z)b-R- , Jk
personally appeared before me this day of 2g�)D 7, and acknowledge the due
execution of the forgoing wet detention basin maintenance requirements. Witness my hand and official seal,
9,L
L)
NOTARY
PUBLIC
9L N y �
CO
SEAL
Ile
My commission expires �yA/E Zs e d/Z

Project Name: WCHarHV t 6uuNs I,zorc,- rmArV C'c..rrr-R � rv�AJ County
Designer's Certification
i, !2J �-, l�rcr= , as a duly
I>JSQC�T
Registered Professional Engineer in the State of North Carolina, having been authorized to•elesefVe
the construction of the project, "jkA tErn Arosox/6'
(Project)
for wLl�4 P'`urJ�2o�t2T7LS, LLL (Project Owner)
JNSpeCrt OM
hereby state that to the best of my abilities, due care and diligence was used in the ebsewatiea 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 umber Zs'92S
Date cc �. rz' Zco 7 AUG 13 2007

�O�[ W'q TF90 Michael F. Easley, Governora��
William G. Ross Jr., Secretary
C North Carolina Department of Environment and Natural Resources
Alan W. Klimek, P.E. Director
Division of Water Quality
October 13, 2006
Rocky Run Properties, LLC -
Attn: Mr. William N. Alexander, Jr.
PO Box 15409
New Bern, NC 28561
Subject:: Stormwater Permit No. SW7970912
McCarthy Wellons Professional Center
Craven County
Dear Mr. Alexander:
The Division of Water Quality issued a Coastal Stormwater Management Permit, Number SW7970912
to Rocky Run Properties, LLC for McCarthy Wellons Professional Center on November 21, 1997. This
permit expires on November 21, 2007. Section .1003(h) of 15 A NCAC 2H .1000 (the stormwaterrules)
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. 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. Also enclosed is a new Operation and Maintenance agreement that should be completed
and submitted along with your renewal application.
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 us at 252-946-6481.
Enclosures
cc: Robert M. Chiles
Office
Sincere�i
A o ge, l Iona Supl ervisor
Surface Water Protection Section
Washington Regional Office
North Carolina Division of Water Quality Internet: www.ncwateroualitv.ore One
943 Washington Square Mall Phone [phone] NorthCarolina
Washington, NC 27889 Fax [phone] _ Naturally
An Equal OpporlunitylAKrmabve Action Employer -50%Recycled110% Post Consumer Paper �L K �/

l�
41e a aeu Dm
cI[pl'mc ScPLe I��.boi 1rta
z
0
� L
�i
0
RaP�
s
TtLagEP 1�l _ i
J � ,-1 4EWMA
01?% 9A % i AN Ro
� � t
cR
?I/R nl NFILEt
'V
' Pil � q�l c y DsPRU �u ROJ G
P4� 1 P,VCPf} A' Ab J s
r 1 cf y e
0
� II ye°v C
11 eke (�No>a�m°l
�ylR
a Je�e+Vl p
3 ` AD LFJ1JFe%
D
4
11E <EPln ctO WDICI c. r
f{ S L S
.ye LONS
x
ah°lP�N
tse m =
I' ayv�
II 4 ry n pl
41a d'<I
0
3`A,� b" C VI �'1 .PAFpN6
�61.r 'FONT,Y"h �I� Cn
ens. F f••A Fp n 1F1
e r A ,rP 1�1
F e CI �neav,�
J Alo^I KMAr,
nFkluc'-
aN 1
a 7v
n1` rkNl+e'r TWIN .elv
�C 4P4p4�F LI ~ALL E[s
AJ'% Us. Rg lal �F�r I
.I."P u e. H �N al� IGI
' VV ort`i ea Hn.e `7 Cab - 1$1 ArpNg
'9�NP •r =•. ��SF Rr4f
4J
gECE1VE OFFICE
WpSNINGTt)N
4;GY hum. I
' SEP 1 2 1991
D:
\/IGINI'TY MAP �ru'`•EJ N"° eE a w
t l<:�2LJAp RANT
I U.S. -1 o - U.5.-.r1 I
CITY of I�IE`v FsrK�
TowIJsHIG IJ APeoLll.ln
s
bf`T�` 9.g.�� Ro66Kt M. cHILEs, P.E.
J aA. Ne91T4 EN GIhIE EIS �r col.l bJLTj�N"�9 T
sa�.LE I' -boo' I.IEw P�ERAI, IJ nF-(II ��znLIIJA

NEW B
ERN, N. C. r �:.'�•.,;z_��• �' �+ . y�" .e..,:,s5 <.y , ,� ,,,
SE74 NEW BERN IS' QUADRANGLE �' "�� '' •'•; �.
N3500—W7700/7.5 3y.�/g �.� .• ,•
38dddmN, 1950 !� .d j� a���'��,. •/.
�' f1II0TOREVISED 1974 I . •q �Y /�'/� Jy ;17
(� AMS 5554 It SE —SERIES V842 !a'� �. 47 , \. ,•1"_l �/ •,/ I.
z
1 Y Tra er
ark 1215 ��• ��a`
U87 —
5
I ' 0' LINE Radio To,
OOAS4. .o (WHIT)
''�' r ..�\�,•. SEABOAvp
RD -
F H `' 8,,
Y'm } �..�, I� .-. ♦ .: \ % e�V %'. tea.
Radio T-°fr• '1 \...v 6 I ad'1220\
Y 6 %
Ro Fanged � �" � �• 0 „ I �
%U85 , \\ C' i / New Bela
Range I Radio - / Mnmon al _ \�
\ Cemetery ta
'••�
12.
"
PI
,a8a 1 '
ilson s
• ,
New Bern
!WI� 1� l !r,AM .' �'ontry,Clvb
II I:
. N� \0CIO
oDaybeacon 7r T�LigMe�4 a ?', _ - .n• Y. ,
-TRENT--- —go /� : �• �� _
U83 Foy LandingLi I
ghto
`.,
Light
SCALE 1.24000 �;.`'( ��•
1 S 0 1 MILE
IOW 0 IWO 2000 3014 40DO 50DO 6000 7000 `EET /' '' y v
jI' 1 5 _ 0 1AILOME'E'
1 c;
>C Y

STORMWATER MAINTENANCE PLAN
FOR THE
McCARTHY WELLONS PROFESSIONAL CENTER
Is.>tcr_a�:r_Fy�Israia��.r.I:Yya.��:�a
WELLONS BOULEVARD
NEW BERN. NC
JOB NO: 97154
OWNER:
ROCKY RUN PROPERTIES, LLC
P.O. Box 15409
New Bern, NC 28561-5409
[phone]
WAS HINGTUNEfl
OFfICE
SEP 1 2 1997
D.EM.
PREPARED BY:
ROBERT M. CHILES, P.E.
Engineers & Consultants
P.O. Box 3496
New Bern, NC 28564-3496
[phone]
N CARO-�
Septer e i.49
Z t 9�
* SEAL'
5365
'.p0 F1a N

INDEX
NARRATIVE
PROJECT DESCRIPTION
SITE DESCRIPTION
ADJACENT PROPERTY
SOILS
GENERAL
MAINTENANCE PLAN
CALCULATIONS
DRAWING TITLED "STORMWATER MANAGEMENT PLAN
OF McCARTHY WELLONS PROFESSIONAL CENTER
LOT 4A PHASE II WELLONS CENTRE"

NARRATIVE
PROJECT DESCRIPTION:
The purpose of the project is to construct a stormwater retention pond to serve a 2.0 acre McCarthy
Wellons Professional Center. The project is within the city limits of New Bern, Craven County, North Carolina
and is being developed by Rocky Run Properties, LLC.
The work proposed will include excavation of the retention pond for the Professional Center, and
construction of its on site storm drainage system.
A Sedimentation and Erosion Control Plan has been prepared, submitted, and awaiting approval by
the N. C. DEHNR.
SITE DESCRIPTION:
The undeveloped site is located on the west side of Wellons Blvd. between Highway 70 bypass and
McCarthy Blvd., and bounded on the west by the New Bern Medical Developments, LLC, on the north and
south by undeveloped property.
The topography of the site is relatively flat and cleared.
ADJACENT PROPERTY:
The site is located on the west side of Wellons Blvd. Properties to the west, north, and south are
owned by others, and will not be affected by the work.
SOILS:
The project site is located in the Coastal Plain Physiographic Province, consisting mainly of marine
sediments which were deposited during successive periods of fluctuating sea level and moving shoreline. The
subsurface profile typically consists of inter bedded layers of sands, silts, and clays with irregular deposits of
shells and in some location, poorly consolidated limestone. The near surface soils stratum is approximately
six (6) feet thick and consists of very loose to loose silty and clayey sand.
GENERAL:
The stormwater collection system described herein and on the attached drawing will provide the
following methods for control of sediments and for removal of pollutants from the developed site runoff.
1. Collection of all runoff from the site during development of the retention pond with controlled
discharge.
1 wJ�
2. Retention of the runoff resulting from the first one (t) inch of rainfall on the parking and roof
UI g o° areas into the wet pond. Subsequently this runoff will drain over a 2-5 day period into the
1� � respective 200' grass lined swale before draining into a 15" CMP then into an existing 30"
01^ �el storm pipe on Wellons Blvd.
'6 3. The retention time for the pond is set at 2.2 days with a total outfall of 1,965 cf/day from (1)
1 inch diameter orifice.
McCarthy Wellons Professional Center 3 RMC No: 97154SW

4. The stormwater runoff in excess of the first one (1) inch of rainfall on the parking lot, sidewalk,
and roof area will be collected and piped into the forebay then into the stormwater retention
pond. Subsequently this runoff will decant through an outlet orifice over a 2.2 day period into
the 200' grass lined swale then through a 15"o CMP at elevation 22.0' ABV MSL, then
through a 30" storm pipe. The storm pool elevation is set at 24.5' ABV MSL with additional
emergency discharge over a concrete spillway into 200' grass lined swale to a 15"o CMP
then into an existing 30" storm pipe on Wellons Blvd. as shown on the plan.
5. The entire project site to be served by the new retention pond as shown on the "Stormwater
Management Plan of McCarthy Wellons Professional Center" prepared by Robert M. Chiles,
P.E. dated 09-09-97.
6. 404 wetlands were mitigated per U.S. Corp of Engineers letter dated March 2, 1994. ACT
ID 199402975.
7. The project site will be developed under Zone C-3 (commercial use) under the existing City
of New Bern Land Use Ordinance and zoning requirements having an impervious area less
than 90% of entire site.
8. Seeding specifications shall be as specified in the approved Sedimentation and Erosion
Control Plan.
MAINTENANCE PLAN:
Owner shall maintain the pond during the construction phase of the project and after construction is
completed for all routine and non -routine maintenance tasks. Owners shall be responsible for the perpetual
care of the stormwater retention pond.
A. CONSTRUCTION PHASE
All erosion and sediment control practices shall be checked for stability and proper operation
following every runoff producing rainfall and in no case less than once every week during
construction. All repairs shall be made immediately and shall be in accordance with the
approved Sedimentation and Erosion Control plan.
The retention pond shall be inspected during the construction phase of the project following
every runoff producing rainfall and in no case less than once a week. Check the
embankment, spillway, and outlet for erosion damage, and inspect the embankment also for
piping and settlement. Make all necessary repairs immediately. Remove all trash and other
debris from the riser and pool area. Periodic inspection of the discharge orifice header shall
assure that the system is not clogged. The retention pond shall be inspected for a build-up
of sediment. If and when the sediment layer exceeds 18 inches thick on the average above
the design grade, then this sediment shall be removed. At the close of the construction
phase of the project, the pond shall be cleaned of excess sediment to the designed grade
and begin functioning as storm water retention pond. All regrading or repairing of the side
slopes, seeding, mowing and any and all repairs shall be performed prior to close-out of the
construction phase.
The grass -lined swale to the pond shall be properly inspected and maintained against
erosion, weeds, and woody vegetation chocking the discharge from the impervious areas.
All seeded areas shall be maintained to sustain the required vegetation. Any and all bare
areas shall be replanted as necessary, with all repairs made immediately.
McCarthy Wellons Professional Center 4 RMC No: 97154SW

B. MAINTENANCE REQUIREMENTS
Owner shall be responsible for all routine and non -routine requirements associated with the
maintenance of the stormwater retention pond.
Upon completion of earth disturbing activities and for 12 months following completion of the
work, the owner shall inspect the site following every runoff producing rainfall. A written log
shall be maintained of any needed repairs noted at the inspection, the name of the Contractor
completing the repairs, and the date such repairs are completed.
C. ROUTINE MAINTENANCE
Mowing. The side -slopes, embankment, buffer area, areas within the fence, areas
adjacent to the emergency spillways and the grass -lined swales shall be mowed at
least once a month during the main growing season and at least two other times
during the year to prevent woody growth and to control weeds. Grass shall be
mowed to a "meadow -like" condition and shall be maintained according to Section
6.11 Permanent Seeding of the approved Sedimentation and Erosion Control Plan.
2. Inspections. The stormwater retention pond shall be inspected (at a minimum of) on
an annual basis to ensure that the structure operates in the manner originally
intended. Additional inspections shall be conducted during wet weather, or times of
extreme weather to determine if each pond is functioning properly. Inspection
priorities shall include (but not limited to) the following: checking the embankment
for any erosion, subsidence, cracking, bare areas in the grass, and tree growth; the
condition of the emergency spillway; the fence and adjacent planting buffers; the
accumulation of sediment; clogging of the decant orifice structure and outlet pipe; the
adequacy of upstream channel erosion protection measures including any
modifications which have occurred to the contributing watershed, and the pond
structure including the stability of the side slopes. Inspections shall be carried out
with "As -Built" retention pond plans.
3. Debris and Litter Removal. Debris and litter removal from the surface of the pond
shall be included as a part of the periodic mowing operation. Particular attention
shall be paid to any floating debris around the riser and trash rack, and the decant
orifice structure shall be checked for possible clogging. Any trash found within the
area of the pond, ditch, and fence shall be removed and disposed of properly
according the City and County regulations.
4. Erosion Control. Corrective measures and repairs shall be done to the pond's side
slopes, embankment, emergency spillway and grass lined swale where settlement,
slumping, and erosion has occurred. Repair as necessary the ditch within the fence
area. Repair or replace the rip rap protecting the channel near the outlet as required
to stop the erosion. All repairs shall be done in accordance with the original plans
and specifications.
5. Nuisance Control. Owner shall maintain the retention pond and adjacent areas so
as to control the possible problems of weeds, odors, algae, and insects. Proper
maintenance shall take care of most problems except in times of extreme dry
weather. Owner shall also use biological control against mosquitos and algae
through the use of fish and fat head minnows when possible in lieu of chemical
applications.
McCarthy Welton Professional Center 5 RMC No: 97154SW

D. NON -ROUTINE MAINTENANCE
Structure Repairs and Replacement. Owner shall replace all deteriorated inlettoutlet
works and decant orifice structure and pipe riser works when deterioration from use
and age causes them to fail and function properly. Owner shall be responsible for
all costs incurred with their replacement. Replacement shall be in accordance with
original plans and specifications.
2. Sediment Removal. Owner shall be responsible for the removal of excess
accumulated sediment in the pond when the storage capacity is significantly reduced
from the design capacity due to the properly designed and functioning stormwater
retention pond. Owner shall be responsible for all incurred costs of removal and
proper disposal of the sediment in accordance with all local, state, and federal
regulations. Sediment removal/clean out cycle for stormwater retention pond is
recommended on a ten to twenty year cycle. Owner shall every five (5) years
measure the depth of sediment above design grade to determine rate of
accumulation and to establish a time line for sediment removal.
MAINTENANCE COST:
Owner shall be responsible for all annual costs of routine maintenance and for any and all non -routine
maintenance costs as they occur throughout the life of the stormwater retention pond.
McCarthy Wellons Professional Center 6 RMC No: 97154S W

POND MAINTENANCE REQUIItEMENTS
McCarthy Wellons Professional Center
Project Name: Lot 4A Phase II Wellons Centre Project
Permittee: Rocky Run Properties, LLC
Phone No. [phone]
Address: P. 0. Box 15409, New Bern, N. C. 28561-5409
I. Monthly, or after every runoff producing rainfall event, whichever comes first:
A. Inspect the trash rack; remove accumulated debris, repair/replace if it is not functioning.
B. Inspect and clear the orifice of any obstructions. If a pump is used as the drawdown
mechanism, pump operation will be checked. A log of test runs of the pump will be kept
on site and made available to DEM personnel upon request.
C. Inspect the pond side slopes and grassed inlet swales; remove trash, and repair eroded
areas before the next rainfall event.
D. If the pond is operated with a vegetated filter, the filter will be checked for sediment
accumulation, trash accumulation, erosion and proper operation of the flow spreader
mechanism. Repairs/cleaning will be done as necessary.
II. Quarterly:
A., Inspect the collection system (ie. catch basins, piping, grassed swales) for proper
functioning. Accumulated trash will be cleared from basin grates, basin bottoms, and
piping will be checked for obstructions and cleared as required.
B. Pond inlet pipes will be checked for undercutting. Riprap or other energy dissipation
structures will be replaced, and broken pipes will be repaired.
III. Semi-annually:
A. Accumulated sediment from the bottom of the outlet structure will be removed.
B. The forebay depth will be checked at various points. Sediment removal is required when
the depth is reduced to 75 % of the original forebay design depth of 2
C. Grassed swales, including the vegetated filter if applicable, will be reseeded twice a year
as necessary.

POND MAINTENANCE REQUIREMENTS
PAGE 2
IV. Annually:
A. The pond depth will be checked at various points. Sediment removal is required when the
depth is reduced to 75 % of the original design depth or Y, whichever is greater. Design
depth is 4 ', measured vertically from the orifice down to the pond's bottom.
Sediment must be removed to at least the original design depth.
V. General:
A. Mowing of the side slopes will be accomplished according to the season. Maximum grass
height will be 6".
B. Cattails are encouraged along the pond perimeter, however they will be removed when they
cover more than 1/2 the surface area of the pond. The best time to cut them is at the end
of the growing season, in November. Environmentally sensitive chemical for use in killing
cattails can also be used. Contact your nearest Agricultural Extension Agent.
C. The orifice/pump is designed to draw down the pond in 2-5 days. If drawdown is not
accomplished in that time, the orifice will be replaced with a larger or smaller orifice.
Slow drawdown may be attributed to a clogged system. The source of the clogging will
be found and eliminated.
D. All components of the detention pond system will be kept in good working order. Repair
or replacement components will meet the original design specifications as per the approved
stormwater plan. If previously approved components are determined to be ineffective, the
component must be redesigned and/or replaced.
VI. Special Requirements:
hereby acknowledge that I am the financially
(please print or type name clearly)
responsible party for maintenance of this detention pond. I will be responsible for the performance of the
maintenance as outlined above, as part of the Sto
A t�uat�r Management Permit received for this project.
/7
Signature:
WMM
Date:—
DA/arl:
S:\WQS\STO
AT\FORNIS\O&M-POND.FOR

ROBERT M.
CHILES, P.E. Engineers
& Consultants
PROJECT AREA
2.00 acres =
87,120 sq ft A' 2-%
Building
%
1� a�
Q ra►
10,800 sq ft a rw
/1
9
7p1
Parking, Pavement, Sidewalks, Conc.
6�/ /bp
N
26,220 sq ft
tflZ)
Pond Area, Easements, Buffers, Setbacks
27,660 sq ft
Other, Grass
22,440 sq ft
TOTAL
87,120 sq ft
Offsite area entering pond = NONE
VOLUME: 1" Runoff from impervious area a 60%
2.00 acre x 60° 1.20 acres = 52,272 sq ft
1.20 x43560
12 = 4,356 cu ft
L SA/SD Ratio for / 4' Basin Depth @ 60 Impervious = 3.80 1 0/°
33f/ S�•
v' ��'9` „ � 5 SA = 1.2 x 3.8 = 0.0456 acres = ,986 sq ft
�'r 100
Permanent Pool Elevation 23.0
tN Design Storage 24.5 1.5 Rise Design
Top of Bank 25.0 Storm Depth
p Emergency Spillway 24.5
Bottom Elevation 19.0
SA = Permanent Pool
Permanent Pool =
Pond Storage=
ORIFICE SIZING
Orifice Flow = cfs
Q = CdA 2gh
Q = 0.0227 cfs
Q = 1.36 cfm
Q = 81.88 cfh
Q = 1965 cf day
Outlet Time
SA = 0.0456 acres =
331ts�r
1,986 sq ft req'd
4,356 cu ft req'd
2.o X 43 Sbo X .0833 _ 7�docf
PO.-F °
FA411 . %
OW4(1 ,iv
1,986 sq ft .
4,968 sq ft provided
6,906 cu ft provided
Cd =0.60
A=0.005454 = 1" dia. hole
A=(1)1"dia.= 0.005
g =32.2 ft/sec
h =0.75 = average 0-18" = 9/12
4,356 /1965 2.2168 days
McCarthy Wellons Professional Center
2 b G 5-0 x .o83if % y 176 c F.
26 7-2-°x oE33X��O;A6Lc f
4- 8g-6 x
0.635 47/7 c
0.60325
26277.57
48.3
6.9498201
0.0227432
1.364593
81.87558
1965.0139
97154

•'��S•' ,. '�T. �•.
'�b'�'•,
J
��' � : �1 ;,
•`� C i � b 1 e '.
�• f' 1 //
L�"i.� Yfi�•��•,
•1i `�._.�.. • � .
�a

417 A BROAD STREET
P.O. BOX 3496
NEW BERN, NORTH CAROLINA 2B564-3496
ROBERT M. CHILES, P.E.
ENGINEERS, CONSULTANTS
MARINE SURVEYORS
September 10, 1997
Mr. William Moore
NC DEHNR, Water Quality Section
Washington Regional Office
043 Washington Square Mall
Washington, N. C. 27889
Subject: McCarthy Wellons Professional Center
Lot 4A Phase II Wellons Centre
Stormwater Permit and Management Plan
Dear Mr. Moore:
BUSINESS: 919-637-4202
NIGHTS: 919-63B-2346
FAX: [phone]
WASHINGTUNEOFFICF
SEP 1 2 1997
D.EMR
Please find attached the submittal package for Stormwater Management Plan for Lot
4A Phase II of Wellons Centre for Rocky Run Properties, LLC located on Wellons Blvd.
The submittal package includes the following:
Original and one copy of the Permit Application
Vicinity Map and portion of USGS Map (2 copies each)
Stormwater Maintenance Plan (including calculations) -original and one copy.
Stormwater Management Plan Drawing (Sheet 1 of 1) (2 copies).
Robert M. Chiles, P.E. check no: 20431 for $385.00.
If you have any questions or determine you need additional information, please
contact us at your convenience.
Yours very truly,
ROBE®RT M. CHI S, P.E.
Barbara D. Francl
Enclosures
cc: Rocky Run Properties, LLC
Morton Development
97154sw.uF
MECHANICAL, CIVIL, AND MARINE ENGINEERING MARINE HYDROGRAPHIC AND LAND SURVEYS
COMMERCIAL, INDUSTRIAL, MARINE AND RAILROAD FACILITIES DESIGN
FORENSIC ENGINEERING AND FAILURE ANALYSIS BOUNDARY SURVEYS AND MAPPING SERVICE