SW8070341_HISTORICAL FILE_20080627

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO
SW8 0103Li \
DOC TYPE
❑ CURRENT PERMIT
❑ APPROVED PLANS
HISTORICAL FILE
❑ COMPLIANCE EVALUATION INSPECTION
DOC DATE
2 OOS ODD 21
YYYYMMDD

01
Michael f Easlev, Go%emor
William Ross Jr, Secretary
North Carolina Department of Emmonment and Natural Resources
Coleen I I Sullins Director
Division of Water Quality
June 27, 2008
Hugh Batts, President
Jones-Onslow EMC
259 Western Blvd
Jacksonville, NC 28546
Subject State Stormwater Permit No SW8 070341
Jones Onslow EMC-Meadowview Electric Sub -Station
High Density Commercial Project
Onslow County
Dear Mr Batts
The Wilmington Regional Office received a complete Stormwater Management Permit
Application for Jones Onslow EMC-Meadowview Electric Sub -Station on May 22, 2008 Staff
review of the plans and specifications has determined that the protect, as proposed, will
comply with the Stormwater Regulations set forth in Title 15A NCAC 2H 1000 We are
forwarding Permit No SW8 070341 dated June 27, 2008, for the construction of the subject
project
This permit shall be effective from the date of issuance until June 27, 2018, and shall be
subject to the conditions and limitations as specified therein Please pay special attention to
the Operation and Maintenance requirements in this permit Failure to establish an adequate
system for operation and maintenance of the stormwater management system will result in
future compliance problems
If any parts, requirements, or limitations contained in this permit are unacceptable, you have
the right to request an adludicatory hearing upon written request within sixty (60) days
following receipt of this permit This request must be in the form of a written petition,
conforming to Chapter 150B of the North Carolina General Statutes, and filed with the Office of
Administrative Hearings, P O Drawer 27447, Raleigh, NC 27611-7447 Unless such demands
are made this permit shall be final and binding
If you have any questions, or need additional information concerning this matter, please
contact Rhonda Hall, or me at [phone]
Sinc ely, /Z Ed rd eck
Regional Supervisor
Surface Water Protection Section
ENB/ rbh S \WOS\STORMWATER\PERMIT\070341 tun08
cc David K Newsom, Pe, Crystal Coast Engineering, PA
Onslow County Building Inspections
Rhonda Hall
C-Wilmington_RegionaCOffiqp3�
Central Files
NPotlhCarolina
Aalurally
North Carolina Division of Water Quality 127 Cardinal Drive Extension Wilmington, NC 28405 phone [phone]
Wilmington Regional Office Internet www nceatereuahty ore fax [phone]
An Equal Oppottumty/Aff rmahve Action Employer— 50% Recycled110%Post Consumer Paper
Customer Service
1 877-623 6748

State Stormwater Management Systems
Permit No SW8 070341
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
STATE STORMWATER MANAGEMENT PERMIT
HIGH DENSITY COMMERCIAL 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
Hugh Batts, Jones-Onslow EMC
Jones Onslow EMC-Meadowview Electric Sub -Station
Pony Farm Road, Jacksonville, Onslow County
FOR THE
construction, operation and maintenance of a wet detention pond in compliance with
the provisions of 15A NCAC 2H 1000 (hereafter referred to as the "stormwater rules')
and the approved stormwater management plans and specifications and other
supporting data as attached and on file with and approved by the Division of Water
Quality and considered a part of this permit
This permit shall be effective from the date of issuance until June 27, 2018, and shall
be subject to the following specified conditions and limitations
I DESIGN STANDARDS
1 This permit is effective only with respect to the nature and volume of stormwater
described in the application and other supporting data
2 This stormwater system has been approved for the management of stormwater
runoff as described in Section 16 on page 3 of this permit The stormwater
control has been designed to handle the runoff from 46,418 square feet of
impervious area
3 The tract will be limited to the amount of built -upon area indicated on page 3 of
this permit, and per approved plans
4 All stormwater collection and treatment systems must be located in either
dedicated common areas or recorded easements The final plats for the project
will be recorded showing all such required easements, in accordance with the
approved plans
5 The runoff from all built -upon area within the permitted drainage area(s) of this
project must be directed into the permitted stormwater control system
Page 2 of 7

State Stormwater Management Systems
Permit No SW8 070341
The following design criteria have been provided in the wet detention pond and
must be maintained at design condition
a
Drainage Area, 9cres
1 995
Onsite, ft
84,939
Offsite, ft2
None
b
Total Impervious Surfaces, ft2
46,416
c
Design Storm, inches
1
d
Average Pond Design Depth, feet
5
e
TSS removal efficiency
90%
f
Permanent Pool Elevation, FMSI
61 10
Permanent Pool Surface Areq, ft
3,400
h
Permitted Storage Volume, ft
3,9261
1
Temporary Storage Elevation, FMSL
6212
i
Controlling Orifice
0 75" f0 pipe
k
Permitted Forebay Volume, ft3
1,300
1
Fountain Horsepower, HP
No Fountain Allowed
m
Receiving Stream/River Basin
UT to Blue Creek / White Oak
n
Stream Index Number
19-8
o
Classification of Water Body
"SC, NSW"
II SCHEDULE OF COMPLIANCE
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 surface
During construction, erosion shall be kept to a minimum and any eroded areas of
the system will be repaired immediately
The permittee shall at all time provide the operation and maintenance necessary
to assure the permitted stormwater system functions at optimum efficiency The
approved Operation and Maintenance Plan must be followed in its entirety and
maintenance must occur at the scheduled intervals including, but not limited to
a Semiannual scheduled inspections (every 6 months)
b Sediment removal
c Mowing and re -vegetation of slopes and the vegetated filter
d Immediate repair of eroded areas
e Maintenance of all slopes in accordance with approved plans and
specifications
f Debris removal and unclogging of outlet structure, orifice device, flow
spreader, catch basins and piping
o Access to the outlet structure must be available at all times
4 Records of maintenance activities must be kept and made available upon
request to authorized personnel of DWQ The records will indicate the date,
activity, name of person performing the work and what actions were taken
5 Decorative spray fountains will not be allowed in the stormwater treatment
system
6 The facilities shall be constructed as shown on the approved plans This permit
shall become void unless the facilities are constructed in accordance with the
conditions of this permit, the approved plans and specifications, and other
supporting data
7 Upon completion of construction, prior to issuance of a Certificate of Occupancy,
and prior to operation of this permitted facility, a certification must be received
Page 3 of 7

State Stormwater Management Systems
Permit No SW8 070341
from an appropriate designer for the system installed certifying that the permitted
facility has been installed in accordance with this permit, the approved plans and
specifications, and other supporting documentation Any deviations from the
approved plans and specifications must be noted on the Certification A
modification may be required for those deviations
8 If the stormwater system was used as an Erosion Control device, it must be
restored to design condition prior to operation as a stormwater treatment device,
and prior to occupancy of the facility
9 Access to the stormwater facilities for inspection and maintenance shall be
maintained via appropriate recorded easements at all times
10 The permittee shall submit to the Director and shall have received approval for
revised plans, specifications, and calculations prior to construction, for any
modification to the approved plans, including, but not limited to, those listed
below
a Any revision to any item shown on the approved plans, including the
stormwater management measures, built -upon area, details, etc
b Project name change
c Transfer of ownership
d Redesign or addition to the approved amount of built -upon area or to the
drainage area
e Further subdivision, acquisition, lease or sale of all or part of the project
area The protect area is defined as all property owned by the permittee,
for which Sedimentation and Erosion Control Plan approval or a CAMA
Major permit was sought
f Filling in, altering, or piping of any vegetative conveyance shown on the
approved plan
11 Prior to the construction of any permitted future areas shown on the approved
plans, the permittee shall submit final site layout and grading plans to the
Division for approval
12 A copy of the approved plans and specifications shall be maintained on file by
the Permittee at all times
13 The Director may notify the permittee when the permitted site does not meet one
or more of the minimum requirements of the permit Within the time frame
specified in the notice, the permittee shall submit a written time schedule to the
Director for modifying the site to meet minimum requirements The permittee
shall provide copies of revised plans and certification in writing to the Director
that the changes have been made
III GENERAL CONDITIONS
This permit is not transferable except after notice to and approval by the Director
In the event of a change of ownership, or a name change, the permittee must
submit a completed Name/Ownership Change Form signed by both parties, to
the Division of Water Quality, accompanied by the supporting documentation as
listed on page 2 of the form The approval of this request will be considered on
its merits and may or may not be approved
2 The permittee is responsible for compliance with all permit conditions until such
time as the Division approves the transfer request
Page 4 of 7

State Stormwater Management Systems
Permit No SW8 070341
3 Failure to abide by the conditions and limitations contained in this permit may
subject the Permittee to enforcement action by the Division of Water Quality, in
accordance with North Carolina General Statute 143-215 6A to 143-215 6C
4 The issuance of this permit does not preclude the Permittee from complying with
any and all statutes, rules, regulations, or ordinances, which may be imposed by
other government agencies (local, state, and federal) having jurisdiction
5 In the event that the facilities fail to perform satisfactorily, including the creation
of nuisance conditions, the Permittee shall take immediate corrective action,
including those as may be required by this Division, such as the construction of
additional or replacement stormwater management systems
6 The permittee grants DENR Staff permission to enter the property during normal
business hours for the purpose of inspecting all components of the permitted
stormwater management facility
7 The permit remains in force and effect until modified, revoked, terminated or
renewed The permit may be modified, revoked and reissued or terminated for
cause The filing of a request for a permit modification, revocation and re -
issuance or termination does not stay any permit condition
8 Unless specified elsewhere, permanent seeding requirements for the stormwater
control must follow the guidelines established in the North Carolina Erosion and
Sediment Control Planning and Design Manual
9 Approved plans and specifications for this project are incorporated by reference
and are enforceable parts of the permit
10 The permittee shall notify the Division of any name, ownership or mailing
address changes at least 30 days prior to making such changes
11 The permittee shall submit a permit renewal request at least 180 days prior to
the expiration date of this permit The renewal request must include the
appropriate documentation and the processing fee
Permit issued this the 27t' day of June, 2008
NORT AROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
/or coieen h suuins, uirecior
Division of Water Quality
By Authority of the Environmental Management Commission
Page 5 of 7

OFFICE USE ONLY
Date Received
Fee Paid
Permit Number
-is-o7
V.00
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
This form mar be photocopied for uw as an original
I GENERAL INFORMATION
1 Applicants name (specify the name of the corporation, individual, etc who owns the project)
Jones-Onslow EMC
2 Print Owner/Signing Official's name and title (person legally responsible for facility and compliance)
Mr Hueh Batts. President
3 Mailing Address for person listed in item 2 above
259 Western Blvd
City Jacksonville
Telephone Number ( 910 ) 353-
State N C
Zip 28546
4 Project Name (subdivision, facility, or establishment name - Should be consistent with project name on plans
specifications, letters, operation and maintenance agreements, etc )
Jones Onslow EMC-Meadowview Electnc Sub -Station
5 Location of Project (street address)
Pony Farm Road
City Jacksonville Township
County Onslow
6 Direc,tions to project (from nearest major intersection)
From intersection of US 258 & NC 53, west on US 258 approx 0 50 miles to NCSR 1213, left on NC 1213
approx 2 1 miles to NCSR 1212, right on NCSR 1212, site on right
7 Latitude 340 45' 42" N
Longitude 77030' 56" W
8 Contact person who can answer questions about the project
Name David R. Newsom, PE, Crystal Coast Engineering, PA Telephone Number
tI PERMIT INFORMATION
1 Specify whether project is (check one) X New Renewal
Form SWU-101 Version 3 99 Page 1 of
of project
910 t325-0006
Modification

2 If this application is being submitted as the result of a renewal or modification to an existing permit, list the
existing permit number n/a and its issue date (if known)
3 Specify the type of project (check one)
_Low Density X High Density _Redevelop __ General Permit _Other
4 Additional Project Requirements (check applicable blanks)
_LAMA Major X Sedimentation /Erosion Control _404/401 Permit NPDES Stormwater
Information on required state pernins can be obtained by contacting the Customer Service Center at
1-877-623-6748
III PROJECT INFORMATION
1 In the space provided below, summarize how stormwater will be treated Also attach a detailed narrative
(one to two pages) describing stormwater mdnagement for the project
High Density - Stormwater will be collected and treated in a wet detention basin
2 Stormwater runoff from this project drains to the White Oak (New River) River basin
3 Total Project Area 320 acres 4 Project Built Upon Area 333 %
5 How many drainage areas does the project have?
6 Complete the following information for each drainage area If there are more than two drainage areas in the
project, attach an additional sheet with the information for each area provided in the same format as below
sBsv nhiforinaUonA�,�
a
�.�..„
�� Diamage Aieall= %5�
Dramage Aiea 2 c
Receiving Stream Name
UT to Blue Creek 4 '
Receiving Stream Class
SC,NSW
Drainage Area
84,939 sf (1 95 ac)
Existing Impervious* Area
-0-
Propotied Impervious*Area
46,418 sf (1 07 ac)
% Impervious* Area (total)
54 6%
tlmpervtoan*§ "rface°great
DranageAreaalil
•- . rtir�nage?Area 2; y
On -site Buildings
_0_
On -site Streets
0_
On -site Parking
46,418 sf
On -site Sidewalks
_0_
Other on -site
-0-
Ot -site
0_
Total 46,418 sf (1 07) ac)
Total
* Impervious urea is defined as the built upon area including but not limited to, buildings, ioads parking areas,
s+dc valks, gravel areas, etc
Form SWU-101 Version 3 99 Page 2 of 4

How was the off -site impervious area listed above derivedo n/a
IV DEED RESTRICTIONS AND PROTECTIVE COVENANTS
The following italicized deed restrictions and protective covenants are required to be recorded for all
subdivisions outparcels and future development prior to the sale of any lot If lot sizes vary significantly, a table
listing each lot number, size and the allowable built -upon area for each lot must be provided as an attachment
I The following covenants are intended to ensut a ongoing compliance mth state storm water management permit number
as issued by the Division of !f ater Quality These covenants may not be
changed or deleted without the consent of the State
2 No more than squar e feet of any lot shall be covered by structures at impervious mates orals
Impervious materials include asphalt, giavel, concrete, brick, stone, slate of similar material but do not include wood
decking or the water surface ofswmmming pools
3 Swales shall not be filled in, piped, or alter ed except as necessary to provide driveway crossings
4 Built -upon area in excess of the permitted amount requires a stale stormwatet management perms modification prior to
construction
5 All permitted runofffrom outparcels or future development shall be directed into the pet mated stormwater control
system These connections to the stormwaler control system shall be performed in a manner that maintains the integrity
and performance of the system as permitted
By your signature below, you certify that the recorded deed restrictions and protective covenants for this project
shall include all the applicable items required above, that the covenants will be binding on all parties and persons
claiming under them, that they will run with the land, that the required covenants cannot be changed or deleted
without concurrence from the State and that they will be recorded prior to the sale of any lot
V SUPPLEMENT FORMS
The applicable state stormwater management permit supplement form(s) listed below must be submitted for each
BMP specified for this project Contact the Stormwater and General Permits Unit at [phone] for the status
and availability of these forms
Form SWU-102
Wet Detention Basin Supplement
Form SWU-103
Infiltration Basin Supplement
Form SWU-104
Low Density Supplement
Form SWU-105
Curb Outlet System Supplement
Form SWU-106
Off -Site System Supplement
Form SWU-107
Underground Infiltration Trench Supplement
Form SWU-108
Neuse River Basin Supplement
Form SWU-109
Innovative Best Management Practice Supplement
Form SWU-101 Version 3 99 Page 3 of 4

VI SUBMITTAL REQUIREMENTS
Only complete application packages will be accepted and reviewed by the Division of Water Quality (DWQ)
A complete package includes all of the items listed below The complete application package should be
submitted to the appropriate DWQ Regional Office
1 Please indicate that you have provided the following required information by initialing in the space provided
next to each item
Initials
• Original and one copy of the Stormwater Management Permit Application Form '
• One copy of the applicable Supplement Form(s) for each BMP /
Permit application processing fee of $420 (payable to NCDENR)
Detailed narrative description of stormwater treatment/management
• Two copies of plans and specifications, including
- Development/Project name
- Engineer and firm
-Legend
- North arrow
Scale
Revision number & date
Mean high water line
Dimensioned property/project boundary
Location map with named streets or NCSR numbers
Original contours, proposed contours, spot elevations, finished floor elevations
Details of roads drainage features, collection systems, and stormwater control measures
Wetlands delineated, or a note on plans that none exist
Existing drainage (including off -site), drainage easements, pipe sizes, runoff calculations
Drainage areas delineated
Vegetated buffers (where required)
VII AGENT AUTHORIZATION
If you wish to designate authority to another individual or firm so that they may provide information on your
behalf, please complete this section
Designated agent (individual or firm) David K Newsom, PE, Crystal Coast Engineering, PA
Mailing Address 3817-3 Freedom Way
City Hubert
State N C
Zip 28539
Phone [ 910 1 325-0006 Fax ( 910 ) 325-0060
VIII APPLICANT'S CERTIFICATION
I, (print or type name ofperson listed in General Information, item 2) __ Mr Hugh Batts
certify that the information included on this permit application form is, to the best of my knowledge, correct and
that the project will be constructed in conformance with the approved plans that the required deed restrictions
and protective covengts will be recorded, and that the proposed project complies with the requirements of 15A
NCAC 21-1 1000
Signature
Form SVU-101 Version 3 99 Page 4 of 4
Date //_ // M 0

Michael F Eash.y, Cox emor
William G Ross Jr Secretary
Nonh Carolina Department of Environment and Natural Resources
ii w -.I
v �
August 28, 2007
Mr Hugh Batts, President
Jones-Onslow EMC
259 Western Blvd
Jacksonville, NC 28546
Subject Request for Additional Information
Stormwater Project No SW8 070341
Jones Onslow EMC-Meadowview Electric Sub -Station
COUNTY County
Dear Mr Batts
Coleen El Sullins Director
Division of Watcr Quality
The Wilmington Regional Office received a Stormwater Management Permit Application for
Jones Onslow EMC-Meadowview Electric Sub -Station on July 15, 2007 A preliminary review
of that information has determined that the application is not complete The following
information is needed to continue the stormwater review
Please either delineate all wetlands on site, disturbed or undisturbed, or note on
the plans that none exist If wetlands exist on the site please submit a wetland
survey map
2 Please verify that the pond has an average pool depth of 3 feet to 7 5 feet In
addition, please verify that the average pool depth is used in determining the
permanent pool Surface Area to Drainage Area ratio (SA/DA) One method of
calculating the permanent pool average depth is to divide the permanent pool
volume by the permanent pool surface area
Please note that this request for additional information is in response to a preliminary review
The requested information should be received in this Office prior to September 28, 2007, or the
application will be returned as incomplete The return of a project will necessitate resubmittal of
all required items, including the application fee
If you need additional time to submit the information, please mail, email or fax your request for
a time extension to the Division at the address and fax number at the bottom of this letter The
request must indicate the date by which you expect to submit the required information The
Division is allowed 90 days from the receipt of a completed application to issue the permit
The construction of any impervious surfaces, other than a construction entrance under an
approved Sedimentation Erosion Control Plan, is a violation of NCGS 143-215 1 and is subject
to enforcement action pursuant to NCGS 143-215 6A
Please reference the State assigned project number on all correspondence Any original
documents that need to be revised have been sent to the engineer or agent All original
`
rCazohna
Naturally
North Carolina Division of Water Quality 127 Cardinal Drive Extension Wilmington NC 28405 Phone [phone] Customer Sen ice
Wilmington Regional Office Internet u,t, ncs�ateroual ly or Fax [phone]
An Equal OpportunitylARrmahve Action Employer- 50% Recycled110 % Post Consumer Paper

Jones Onslow EMC—Meadowview Electric Sub -Station
August 28, 2007
Stormwater Application No SW8070341
documents must be returned or new originals must be provided Copies are not
acceptable If you have any questions concerning this matter please feel free to call me
at [phone]
(Siinccerely, Q Q
Rhonda Hall
Environmental Engineer
ENB/rbh S\WQS\STORMWATERWDDINFO\2007\070341 aug07
cc David K Newsom,
Rhonda Hall
cW_t'�-----j
PE, Crystal Coast Engineering, PA
Page 2 of 2

wpm
JOHN L. PIERCE & ASSOCIATES, P.A.
LAND SURVEYING — LAND PLANNING — MAPPING
P O BOX 1685
JACKSONVILLE NC 28541
OFFICE [phone]I-AX [phone]
E-MAIL bcmbnllnnc coin
Or bnamnIlpnc coin
TO Ms Rhonda Hall
N C Department of Environment and Natural
Resources — Department of Storinwater
127 Cardinal Drive Extension
Wilmington, NC 28405
Letter of Transmittal
DATE
June13 2007
A 11ENTION
Rhonda Hall
Re
Jones Onslow LMC-Meadowview Flectne Sub -Station
COPIES
DATE
NUMBER
DESCRIPTION
2
Sets of plans
2
Stormwater applications with calculations
1
Check 1n the amount of $420 00
CE
BY
REMARKS
SIGNED

Design Calculations - a At i!
Stormwater Treatment Facilities
for
JONES -ONSLOW MEADOWVIEW SUBSTATION
located in
ONSLOW County
1 PROJECT DESCRIPTION
THIS POND IS DESIGNED FOR AN ELECTRIC SUB -STATION
2 COMPUTE POND AREA REQUIRED
a Compute Percent Impervious
Impervious Areas
On -Site Buildings
On -Site Streets
On -Site Parking
On -Site Sidewalks
Other on -site
Off -site
Sub -Total
FUTURE(reserved)
Total
Total Area Drainage to Pond
Percent Impervious =
b Compute Pond Surface Area
Existing Proposed
Total
0 SF
0 SF
46,418 SF
0 SF
iF ` ; ; 3 r{)F
0
0 46,418
46,418 SF
0 w 46,418 46,418 SF
aki443€F SF
0 546 or 546 %
Using Surface Area to Drainage Area Ratio Chart for 90% TSS Removal (copy attached) and
assuming ; Y 1�q foot pond depth
SAIDA = µ 3' „'3.96 % (interpolated)
Therefore
Surface Area = SAIDA x Drainage Area
= 3,364 SF say 3,400 SF

c Compute Minimum Pond Dimensions
Assume rectangular shape with 3 1 Length (L) to Width (W) Ratio
Length = 101 00 feet
Width = 33 67 feet
Site conditions, however, dictate
Hydr Length= %"99$`feet
so, Hydr Width 34 2 feet (avg)
Actual L/W = 2 9 (irregular shape)
3 DETERMINE VOLUME TO BE CONTROLLED FROM 1" STORM
Using Schuler "Simple Method"
Rv = 0 05 + 0 009(I) where I = percent impervious
Rv = 0 542 in/in
Control Volume = Design Rainfall x Rv x Drainage Area
Control Volume = 3,835 CF sayr---T-9-07D CF
4 DETERMINE REQUIRED STORAGE DEPTH
Assume 3 1 side slopes
solving for depth (d) by tnal 8 error
d = 1 02
5 DETERMINE ORIFICE SIZE
Control Volume must be drawn down over a 2 day - 5 day period
Using onfice equation, solve for Diameter (D) that results in 3-1/2 day period
D=(Q/0026(h)s)s
Where Q = (Control Volume / 3 5 days x 86,400 sec/day)
= 0 013 cfs
h=d/2
=051
Solving for D

D = 083 Use t: ti l I, pipe
Actual Drawdown with actual drawdown pipe diameter (using onfice equation)
Q= 0 010 cfs
Draw Down Period = 4 32 days OK, < 5 0
6 SELECT OUTLET STRUCTURE DIAMETER
Size outlet structure such that depth of Q10 flow <1 0 feet
Using Rational Formula (Q=CIA) where
Cimper
Cpery
Ccum = 052
110=,<R q�si3iin/hr
A = 1 95 ac
Q10= 657 cfs
Assuming 112 circumference is used as weir and using
Francis Formula (Q=3 331-1-11 5) to solve for L such that H = 1 0
L = 1 97 Feet
Min 24 inch diameter outlet structure
Use 30 inch diameter outlet structure
7 DETERMINE 010 STAGE
Q10 = 6 57 cfs
Using Francis Formula (Q=3 331-1-11 5) solve for H
H10 = 0 63 feet
8 DETERMINE 0100 STAGE (ELEV OF EMERGENCY SPILLWAY)
Using Rational Formula (Q=CIA) where
Ccum = 052
A = 1 95 ac
Q100 = 809
Using Francis Formula (Q=3 33LH' 5) solve for H
H 100 = 0 73 feet

9 DETERMINE 0100 STAGE OVER EMERGENCY SPILLWAY (TOP BERM ELEV )
Assume primary spillway blocked (i e , emergency spillway to accommodate Q100)
Emergency spillway shall be a broad crested earthern weir designed to pass 100 year storm
Using broad crested weir equation H = (Q/Cw x L)"'
where Q = 0100 8 09 cfs
Cw=30
Length = F 'I# feet
H = 0 20 feet
10 FOREBAY SIZING
Compute Actual Pond Volumes (using average end method)
Avg Incr Incr
Main Bay Volume,
Elevation
Area (SEArea
(SF) Depth (FT) Vol (CFl
Pond Bottom
5630
213
Bottom Veg Shelf
6043
V 482
548 333 1,823
Normal Pond
61 10
2,880
1,881 1 67 3,141
Main Bay Volume =
Forebay Volume,
Pond Bottom
Normal Pond
Forebay Volume =
Total Pond Volume =
Forebay Volume equates to
4,964 CF
Elevation Area (SF� Area (SF� Depth (FT
5610 U
61 10 520 260 500
1,300 CF
6,264 CF
20 8 % of Total Volume
Cum
Vol (CFl
1,823
4,964
Vol (CFl Vol (CF1
1,300 1,300
Temp. Storage Volume.
Elevation Area (SF) Area (SF l Depth
(FT l Vol (CF) Vol (CF1
Normal Pond
61 10 3,400
Temp Pond Level
62,€2 4,298 3,849
1 02 3,926 3,926
Temp Pool Volume =
3,926 CF
10 Yr Storage Volume
Elevation Area (SF) Area (SF l Depth
(FT l Vol (CF) Vol (CF)
Temp Pond Level
6212 4,298
Temp Pond Level
02j$ 4,869 4,584
0 63 2,898 2,898

Temp Pool Volume =
100 Yr Storage Volume_
Temp Pond Level
Temp Pond Level
Temp Pool Volume =
11 SUMMARY
Pond Elevations
2,898 CF
Elevation Area (SF) Area (SF 1 Depth (FT) Vol (CF l Vol (CF)
6212 4,298
62AS 4,g6Z 4,630 073 3,362 3,362
3,362 CF
Top Berm (minimum)
H= 0 20
100-Yr Flood
H100= 073
10-Yr Flood
H10= 063
1-inch Storage
storage depth = 102
Permanent Pool
pond depth = 5
Pond Bottom
12 WET DETENTION BASIN SUPPLEMENT
Basin Bottom Elevation
5610
Perm Pool Elevation
61 10
Temp Pool Elevation
62 12
Perm Pool Surface Area
3,400 SF
Drainage Area
1 95 AC
Impervious Area
1 07 AC
Perm Pool Volume
6,264 CF
Temp Pool Volume
3,926 CF
Forebay Volume
1,300 CF
SA/DA
396
Diameter of Orifice
075
Design Rainfall
1"
Relative
695
Actual
6305
675
6285 (emerg weir elev)
665
6275
602
62 12 (primary weir elev)
500
61 10 (invert out elev)
0"

Michael F Easiey Governor
Wdham G Ross Jr Secretary
North Carolina Department of Environment and Natural Resources
--
May17 2007
Mr Hugh Batts
Jones Onslow Electric Membership Corporation
259 Western Boulevard
Jacksonville, NC 28540
Subject Request for State Stormwater, Management Permit Application
Jones on"slow Meadowview Substation
Stormwater Project No SW8070341
Onslow County
Dear Mr Batts
Alan W Klimek P E Director
Division of Water Quality
On March 23, 2007, the Wilmington Regional Office received a copy of an Erosion Control Pain for the subject
project The North Carolina Administrative Code requires any project that must receive either Sedimentation and
Erosion Control Plan approval and/or a CAMA Major permit to apply for and receive a Stormwater Management
Permit by the Division of Water Quality Any construction on the subject site, prior to receipt of the required
permit, will constitute a violation of 15A NCAC 2H 1000 and may result in appropriate enforcement action by this
Office
Either a Stormwater Permit Application Package Including 2 sets of plans, completed application form, fee, and
supporting documentation, or a written response regarding the status of this project and the expected submittal
date must be received in this Office no later than June 17, 2007 Failure to respond to this request may result in
the initiation of enforcement action, and construction may experience a subsequent delay
The NPDES 010000 Federal Stormwater Permit that accompanies the Erosion Control Plan approval letter must
NOT be considered the Coastal Stormwater Management Permit, which will be signed by the Water Quality
Supervisor Please reference the Project Number above on all correspondence If you have any questions,
please call me at (910)-796-7215, or email me at rhonda hall@ncmail net
Sincerely, 11'9
Rhonda Hall
Environmental Engineer
ENB/arl S \WQS\STORMWATER\STORMSUB\070341 may07
cc Onslow County Building Inspections
John L Pierce & Associates
r Wilmington Regional Office File 1
Central Files
No Cam ma
atura�/y
North Camhna Division of Water Quality 127 Cardinal Dnve Lxtension Wilmington, NC 28405 Phone [phone] Customer Service
Wilmington Regional Office Internet a wri nc.wnleJudhiOr" Fm [phone] 1-877.623.6748

,
NCDENR
North Carolina Department of Environment and Natural Resources
Division of Land Resources
James D Simons, PG, PE
Director and State Geologist
Land Quality Section
March 23, 2007
LETTER OF RECEIPT OF EROSION CONTROL PLAN
Mr Hugh Batts, Chairman of The Board
Jones Onslow Electric Membership Corporation
259 Western Boulevard
Jacksonville. NC 28540
RE Project Name Jones Onslow Meadowview Sub -Station
Project ID Onslo 2007-346
County Onslow, Jacksonville, Pony Farm Road
River Basin White Oak
Submitted By John L Pierce
Date Received by LQS March 21, 2007
Plan Type NEW
Dear Mr Batts
12
Michael F Easley, Governor
William G Ross Jr, Secretary
This office has received a soil erosion and sediment control plan for the project listed above which
was submitted as required by the North Carolina Sedimentation Pollution Control Act (G S 113A-57 (4))
The Act requires that all persons disturbing an area of one or more acres of land must obtain approval
of a soil erosion control plan prior to the commencement of the land -disturbing activity (G S 113A-54(d) (4))
The Act further states that this plan must be filed a minimum of 30 days prior to the activity and the approving
authority must approve or disapprove the submitted plan within 30 days of receipt Failure of the approving
authority to approve or disapprove the submitted plan within the 30-day period will be deemed approval of the
plan
Commencement or continuation of a land -disturbing activity under the jurisdiction of this Act prior to
the approval of an erosion and sediment control plan is a violation of the Act
We have performed a preliminary review of your submitted plan and have determined that additional
information will be necessary before a final review can be completed Enclosed is a checklist of items that
must be submitted before we can complete the review process Failure to provide the additional information
may result in disapproval of your plan
The approval of an erosion and sediment control plan is conditioned on the applicant's compliance
with Federal and State water quality laws, regulations and rules
If you have questions please do not hesitate to contact this office Your cooperation in this matter is
appreciated and we look forward to working with you on this project
Sincerely,
_� L3` us e Rt��
Land Quality Section
cc John L Pierce & Associates, P A
LQS-WiRO, SWS-WiRO
Wilmington Regional Office
127 Cardinal Drive Ext , Wilmington, North Carolina 28405-3845 • Phone [phone] FAX [phone]

NORTH CAROLINA DEPARTMENT OF ENVIRONMENT & NATURAL RESOURCES
LAND QUALITY SECTION
EROSION and SEDIMENTATION CONTROL PLAN PRELIMINARY REVIEW CHECKLIST
PROJECT NAME Jones Onslow Meadowview Sub -Station DATE 3/21/20071
PROJECT NO Onslo 2007-346 COUNTY Onslow
To expedite the approval process, a cursory review of your submitted Erosion and Sediment Control Plan application has been made and
has shown the need for additional information as specified below To meet our review schedule, any additional information should be
received by this office no later than April 9, 2007 Failure to meet this schedule may result in disapproval of your plan The
following items shall be incorporated with respect to specific site conditions, in an erosion and sediment control plan
LOCATION INFORMATION
Project location (roads streets landmarks)
North arrow and scale
GENERAL SITE FEATURES (Plan elements)
Legend North arrow scale etc
Property lines
Existing contours (topographic Imes)
Proposed contours
Limits of disturbed area (provide acreage total delineate limits
and label)
Planned and existing bulldmg locations and elevations
Planned & existing road locations & elevations
Lot and/or building numbers
Geologic features rock outcrops seeps springs wetland and
their limits streams lakes ponds dams etc
Easements and drainageways
Profiles of streets utilities ditchtines etc
Stockpiled topsoil or subsoil locations
If the same person conducts the land disturbing activity & any related bonow
or waste activity the related bonow or waste activity shall constitute pad of
the land disturbing activity unless the borrow or waste activity is regulated
under the Mining Act of 1971 or a landfill regulated by the Division of Waste
Management If the land -disturbing activity and any related borrow or waste
activity are not conducted by the same person they shall be considered
separate land -disturbing activities and must be permitted either thru the
Sedimentation Pollution Control Act as a one -use borrow site or through the
Mining Ad
Required Army Corps 404 permit and Water Quality 401 certification (e g
stream disturbances over 150 linear feet)
EROSION CONTROL MEASURES (on plan)
Legend
Location of temporary measures
Location of permanent measures
_x_ Construction drawings and details for
temporary and permanent measures
Maintenance requirements of measures
Contact person responsible for maintenance
SITE DRAINAGE FEATURES
Existing and planned drainage patterns (include off -site areas
that drain through project)
Method of determination of and calculations for Acreage of land
being disturbed
Size and location of culverts and sewers
Sod information type special characteristics
Soil information below culvert storm outlets
_x_ Name and classification of receiving water course
(only where stom water discharges are to occur)
Comments
STORMWATER CALCULATIONS
Pre -construction runoff calculations for each outlet from the site
(al peak discharge points)
Design calculations for peak discharges of runoff (including the
construction phase & the final runoff coefficients of the site)
Design calcs of culverts and storm sewers
Discharge and velocity calculations for open channel and ditch
Flows (easement & right -of ways)
Design talcs of cross sections and method of stabilization of
existing and planned channels (include temporary linings)
Design calcs and construction details of energy dissipators
below culvert and storm sewer outlets (diameters & apron
dimensions)
Design calcs and dimension of sediment basins
Surface area and settling efficiency information for proposed
sediment traps and/or basins
VEGETATIVE STABILIZATION
Area & acreage to be vegetatively stabilized
Method of soil preparation
Seed type & rates (temporary & permanent)
Fertilizer type and rates
Mulch type and rates
NOTE Plan should include provisions for groundcover on
exposed slopes within 21 calendar days following
completion of any phase of grading, permanent
groundcover for all disturbed areas within 21 calendar
days following completion of construction or development
FINANCIAL RESPONSIBILITY/OWNERSHIP FORM
Completed signed & notarized FR/O Form
Accurate application fee ($50 00 per acre rounded up the
next acre with no cedmg amount)
Certificate of assumed name if the owner is a partnership
Name of Registered Agent (if applicable)
Copy of the most current Deed for the site
NOTE For the Express Permitting Option, inquire at the local
RegionalOffice for availability
NARRATIVE AND CONSTRUCTION SEQUENCE
Narrative describing the nature and purpose of the
construction activity
Construction sequence related to erosion and sediment
control(includmg installation of critical measures prior to
the initiation of the land -disturbing activity & removal of
measures after areas they serve are permanently stabilized)
Bid specifications related only to erosion control

I
Continuation of Erosion and Sedimentation Control Plan Preliminary Review Checklist
Jones Onslow Meadowview Sub -Station Onslow 2007-346
1 Provide updated silt fence detail showing the required metal posts Wooden posts are no
longer acceptable
Please review all of the changes that took effect In January 2007 and update your details
Thanks
Wilmington Regional Office
127 Cardinal Drive Extension, Wilmington NC 28405 Phone [phone] Fax [phone]

Stormwater Treatment &
Erosion Control Narrative
Jones-Onslow EMC — Meadowview Electric Sub -Station
Jones-Onslow EMC proposes to construct an electric sub -station on a 3 20 acre tract located on NCSR 1212
near its intersection with NCSR 1213 west of Jacksonville, NC The sub -station will include a gravel parking
area which will trigger DWO stormwater requirements
The project site is tributary to an unnamed tributary of Blue Creek (SC,NSW) therefore treatment facilities are
required The attached Stormwater Plan includes a 3,400 sf wet detention basin
The pond is sized to accommodate 46,418 square feet of impervious area (all gravel parking) associated with
the proposed project The proposed pond is sized for 90% TSS removal The pond does not incorporate
pretreatment, other than the forebay The pond does not include a vegetated filter at the outlet
All stormwater emanating from new impervious surfaces that is generated on -site shall be collected and
directed to the forebay of the proposed stormwater pond by a system of sheet drainage & graveled swales
The treatment system will require periodic maintenance Maintenance frequency shall be dictated by pond
depths Pond depths shall be checked by the owner on a quarterly basis When measured depths are less
than 3 75' (for the main pond as well as the forebay), the pond shall be manually dewatered (pump) and
accumulated sediment removed and properly disposed of
Site topography is gently sloping (0 — 5%) generally draining to the south and southwest Sods are loamy
sand/sandy loam
The entire area designated within "Clearing Limits" will be disturbed during initial construction, and will include
grading for parking and storm drainage The proposed stormwater pond shall be used for sediment storage
during construction Silt fence will be constructed along downslope boundaries of the tract and at downslope
areas of the limits of disturbance and inlet protection will be installed on all drop inlets to prevent sediment
loss

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