SW5100602_Cover Letter & Permit_20100625

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NC®ENR
North Carolina Department of Environment and Natural Resources
Beverly Eaves Perdue
Governor
Division of Water Quality
Coleen H. Sullins
Director
June 25, 2010
Mr. Jon Rennie, Vice President and General Manager
ABB Power T & D Company, Inc.
ABB Pinetops Facility, Sensor Plant
3022 NC 43 North
Pinetops, NC 27864
Dee Freeman
Secretary
Subject: Stormwater Permit No. SW5100602
ABB Pinetops Facility — Parking Area, Expansion & Stormwater Basin
High Density Commercial Wet Pond Project
Edgecombe County
Dear Mr. Rennie:
The Stormwater Permitting Unit received a complete Stormwater Management Permit
Application for ABB Pinetops Facility — Parking Area, Expansion & Stormwater Basin on
June 21, 2010. 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 and
Session Law 2006-246. We are forwarding Permit No. SW5100602, dated June 25, 2010, for the
construction, operation and maintenance of the subject project and the stormwater BMPs.
This permit shall be effective from the date of issuance until June 25, 2020, 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 inspection and maintenance of the stormwater management system will result in future
compliance problems.
If any parts, requirements, or limitations contained in this permit are unacceptable, you have the
right to request an adjudicatory hearing upon written request within thirty (30) days following
receipt of this permit. This request must be In the form of a written petition, conforming to
Chapter 150B of the North Carolina General Statutes, and filed with the Office of Administrative
Hearings, P.O. Drawer 27447, Raleigh, NC 27611-7447. Unless such demands are made this
permit shall be final and binding.
This project will be kept on file at the Raleigh Regional Office. If you have any questions, or
need additional information concerning this matter, please contact Jennifer Jones at (919) 807-
6379; or [e-mail].
Sincerely.
for teen Sullins
cc: Raleigh Regional Office
Central Files
Wetlands and Stormwater Branch _ 1�iOne t
1617 Mail Service Center, Raleigh, North Carolina 27699-1617 1 � Ortll CarOfi na
Location: 5Salisbury St. Raleigh, North Carolina 27604
Phone: 919.8�607 Naturally
\FAR: 919-607-6494 \Customer Service: 1-677-623-6748 L J
Internet: www.nowaterquality.org
An Equal Opportunity \ Affirmative Action Employer

State Stormwater Permit
Permit No.SW5100602
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
ABB Power T & D Company, Inc.
ABB Pinetops Facility — Parking Area, Addition & Stormwater Wet Detention Pond
3022 NC 43 North, Pinetops, Edgecombe County
FOR THE
construction, operation and maintenance of a wet detention pond in compliance with
the provisions of 15A NCAC 2H .1000 and S.L. 2006-246 (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 perrnit.
This permit shall be effective from the date of issuance until June 25, 2020, 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 1.6 on page 3 of this permit. The stormwater
control has been designed to handle the runoff from 250,795 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 of this
project must be directed into the permitted stormwater control system. Y
I� JUL 2 7 M
Page 1 of 6 ;
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State Stormwater Permit
Permit No.SW5100602
6. The following design criteria have been provided in the wet detention pond and
must be maintained at design condition: . .
a. Drainage Area, acres:. 10.16
Onsite, ft : 442,572
Offsite, ft2: 0
b. Total Impervioys Surfaces, ft2: 2501795
Buildings ft : 25,600
Roads/Parking, ft2: 32,981
Other, ft2. 192,214
Offsite, ft�: 0
C. Pond Depth, feet: 7
d. TSS removal efficiency: 90%
e. Design Storm: 1.5 inch
f. Permanent Pool Elevation, FMSL: 91
g. Permitted Surface Area @PP ft2: 64,367
h. Permitted Storage Volume, ft�: 33,462 at temporary pool
i. Storage Elevation, FMSL: 91.60
j. Controlling Orifice: 3.0"0 pipe
k. Permanent Pool Volume, ft3: 413,495
I. Forebay Volume, ft3: 80,855
M. Receiving Stream/River Basin: UT of Town Creek
n. Stream Index Number: 28-83
o. Classification of Water Body: "C, NSW"
II. SCHEDULE OF COMPLIANCE
1. 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.
2. During construction, erosion shall be kept to a minimum and any eroded areas of
the system will be repaired immediately.
3. The permittee shall at all times provide the operation and maintenance
necessary to assure the permitted stormwater system functions at optimum
efficiency. The approved Operation and Maintenance Plan must be followed in
its entirety and maintenance must occur at the scheduled intervals including, but
not limited to:
a. Semiannual scheduled inspections (every 6 months).
b. Sediment removal.
C. Mowing and revegetation of 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.
g. Access to the outlet structure must be available at all times.
4. Records of maintenance activities must be kept and made available upon
request to authorized personnel of DWQ. The records will indicate the date,
activity, name of person performing the work and what actions were taken.
5. The facilities shall be constructed as shown on the approved plans. This permit
shall become voidable unless the facilities are constructed in accordance with
the conditions of this permit, the approved plans and specifications, and other
supporting" data.
I

State Stormwater Permit
Permit No.SW5100602
Upon completion of construction, prior to issuance of a Certificate of Occupancy,
and prior to operation of this permitted facility, a certification must be received
from an appropriate designer for the system installed certifying that the permitted
facility has been installed in accordance with this permit, the approved plans and
specifications, and other supporting documentation. Any deviations from the
approved plans and specifications must be noted on the Certification. A
modification may be required for those deviations.
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.
8. Access to the stormwater facilities shall be maintained via appropriate
easements at all times.
9. 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 project 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.
10. The permittee shall submit final site layout and grading plans for any permitted
future areas shown on the approved plans, prior to construction.
11, A copy of the approved plans and specifications shall be maintained on file by
the Permittee for a minimum of ten years from the date of the completion of
construction.
12. 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
1. 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, to the Division of Water
Quality, signed by both parties, and accompanied by supporting documentation
as listed on page 2 of the form. The project must be in good standing with the i a
Division. 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. `ep
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State Stormwater Permit
Permit No.SW5100602
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 issued shall continue in force and effect until revoked or terminated.
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 issuance of this permit does not prohibit the Director from reopening and
modifying the permit, revoking and reissuing the permit, or terminating the permit
as allowed by the laws, rules and regulations contained in Session Law 2006
246, Title 15A NCAC 2H.1000, and NCGS 143-215.1 et.al.
11.The permittee shall notify the Division.of any name, ownership or mailing
address changes at least 30 days prior to making such changes.
12.The permittee shall submit a renewal request with all required forms and
documentation at least 180 days prior to the expiration date of this permit.
Permit issued this the 25 h day of June, 2010.
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
Division of Water Quality
By Authority of the Environmental Management Commission

State Stormwater Permit
Permit No.SW5100602
ABB Pinetops Facility — Parking Area, Building Expansion & Stormwater Basin
Stormwater Permit No. SW5100602
Edgecombe County
Designer's Certification
I, , as a duly registered
in the State of North Carolina, having been authorized to observe (periodically/ weekly/
full time) the construction of the project,
ABB Pinetops Facility — Parking Area, Building Expansion & Stormwater Basin
(Project)
for (Project Owner) hereby state that, to the
best of my abilities, due care and diligence was used in the observation of the project
construction such that the construction was observed to be built within substantial
compliance and intent of the approved plans and specifications.
The checklist of items on page 2 of this form is included in the Certification.
Noted deviations from approved plans and specification:
Signature
Registration Number
Date
SEAL
Page 5 of 6 .

State Stormwater Permit
Permit No.SW5100602
Certification Requirements:
1. The drainage area to the system contains approximately the permitted
acreage.
2. The drainage area to the system contains no more than the permitted
amount of built -upon area.
3. All the built -upon area associated with the project is graded such that the
runoff drains to the system.
4. All roof drains are located such that the runoff is directed into the system.
5. The outlet/bypass structure elevations are per the approved plan.
6. The outlet structure is located per the approved plans.
7. Trash rack is provided on the outlet/bypass structure.
8. All slopes are grassed with permanent vegetation.
9. Vegetated slopes are no steeper than 3:1.
10. The inlets are located per the approved plans and do not cause short-
circuiting of the system.
11. The permitted amounts of surface area and/or volume have, been /
provided.
12. Required drawdown devices are correctly sized per the approved plans.
13. All required design depths are provided.
14. All required parts of the system are provided, such as a vegetated shelf,
and a forebay.
15. The required system dimensions are provided per the approved plans.
Please submit this Designer's Certification to: Raleigh Regional Office
Surface Water Protection
3800 Barrett Drive
Raleigh, NC 27909
P.iap 6 of 6