20110767 Ver 1_Approval Letter_20111014

North Carolina
Beverly Eaves Perdue
Governor
kv;KWA
NC®ENR
Department of Environment and
Division of Water Quality
CDleen H. Sullins
Director
October 14, 2011
Dee Freeman
Secretary
DWQ Project # 11-0767
Wake County
Aaron Brower
City of Raleigh
One Exchange Plaza, Suite 620
Raleigh, NC 27602
Subject Property: Mango Creek Interceptor Sewer Replacement
Mango Creek [030402, 27-32, C; NSW]
UT to Neuse River [030402, 27-(22.5), C; NSW]
Approval of 401 Water Quality Certification and Authorization Certificate per the Neuse River Buffer
Protection Rules (15A NCAC 2B.0233) with Additional Conditions
Dear Mr. Brower:
You have our approval, in accordance with the attached conditions and those listed below, to fill or otherwise
impact 0.52 acre of wetland (temporary impact), 0.01 acre of wetland (permanent impact), 49 linear feet of
intermittent stream channel (temporary impact), 114 linear feet of perennial stream channel (temporary impacts),
4,632 square feet of Zone I Neuse River basin protected riparian buffer (temporary impacts), 675 square feet of
Zone I Neuse River basin protected riparian buffer (permanent impact), 5,781 square feet of Zone 2 Neuse River
basin protected riparian buffer (temporary impact), 569 square feet of Zone 2 Neuse basin protected riparian
buffer (permanent impact) to replace an existing sewer interceptor that is undersized and aging with a larger sewer
line, as described in your application dated August 5, 2011 and received by the Division of Water Quality (DWQ)
on August 9, 2011 and additional information dated September 13, 2011, October 11, 2011, and October 13,
2011. After reviewing your application, we have decided that the impacts are covered by General Water Quality
Certification Number(s) 3819 (GC3819). The Certification(s) allows you to use Nationwide Permit(s) N W l2
when issued by the US Army Corps of Engineers (USACE). This letter shall also act as your approved
Authorization Certificate for impacts to the protected riparian buffers per 15A NCAC 2B .0233. In addition, you
should obtain or otherwise comply with any other required federal, state or local permits before you go ahead with
your project including (but not limited to) Erosion and Sediment Control, and Non-discharge regulations. Also,
this approval to proceed with your proposed impacts or to conduct impacts to waters as depicted in your
application shall expire upon expiration of the 404 Permit.
This approval is for the purpose and design that you described in your application. If you change your project,
you must notify us and you may be required to send us a new application. If the property is sold, the new owner
must be given a copy of this Certification and approval letter and is thereby responsible for complying with all
conditions. If total fills for this project (now or in the future) exceed one acre of wetland or 150 linear feet of
stream, compensatory mitigation may be required as described in 15A NCAC 2H .0506 (h). This approval
requires you to follow the conditions listed in the attached certification and any additional conditions listed,
below.
Natural Resources
NorthCarolina
JVatura!!y
North Carolina Division of Water Quality Raleigh Regional Office Surface Water Protection Phone [phone] Customer Service
Internet: w .ncwaterquality.org 1628 Mail Service Center Raleigh. NC 27699-1628 FAX [phone]
An Equal Opportunity/Affirmative Action Employer- 50% Recycled/10% Post Consumer Paper
Page 2
The Additional Conditions of the Certification are:
1. Impacts Approved
The following impacts are hereby approved as long as all of the other specific and general conditions of.
this Certification (or Isolated Wetland Permit) are met. No other impacts are approved including incidental
impacts:
Type of Impact Amount Approved Units Plan Location or Reference
Wetland (404) 0.52 (acre) tem ora impact 9-13-2011 PCN page 5 of I I
Wetland (404) 0.01 (acre) permanent impact 9-13-2011 PCN page 5 of I I
Stream - intermittent 49 linear feet) temporary impact 10-13-2011 PCN age 5 of I I
Stream - perennial 114 (linear feet) temporary impact 10-13-2011 PCN age 5 of I I
Buffers Zone 1 4,632 (square feet) temporary impact 10-13-2011 PCN a e 7 of I I
Buffers Zone 1 675 (square feet) permanent impact 10-13-2011 PCN a e 7 of I I
Buffers Zone 2 5,781 (square feet) temporary impact 10-13-201 I PCN a e 7 of 11
Buffers Zone 2 569 (square feet) ermanent impact 10-13-201 I PCN page 7 of I 1
2. No Waste, Spoil, Solids, or Fill of Any Kind
No waste, spoil, solids, or fill of any kind shall occur in wetlands, waters, or riparian areas beyond the
footprint of the impacts depicted in the Pre-Construction Notification. All construction activities,
including the design, installation, operation, and maintenance of sediment and erosion control Best
Management Practices, shall be performed so that no violations of state water quality standards, statutes,
or rules occur.
3. Erosion and sediment control practices must be in full compliance with all specifications governing the proper
design, installation and operation and maintenance of such Best Management Practices in order to protect
surface waters standards:
a. The erosion and sediment control measures for the project must be designed, installed, operated, and
maintained in accordance with the most recent version of the North Carolina Sediment and Erosion
Control Planning and Design Manual.
b. The design, installation, operation, and maintenance of the sediment and erosion control measures
must be such that they equal, or exceed, the requirements specified in the most recent version of the
North Carolina Sediment and Erosion Control Manual. The devices shall be maintained on all
construction sites, borrow sites, and waste pile (spoil) projects, including contractor-owned or leased
borrow pits associated with the project.
c. Sufficient materials required for stabilization and/or repair of erosion control measures and
stormwater routing and treatment shall be on site at all times.
4. Sediment and Erosion Control Measures
Sediment and erosion control measures shall not be placed in wetlands or waters without prior approval
from the Division. If placement of sediment and erosion control devices in wetlands and waters is
unavoidable, design and placement of temporary erosion control measures shall not be conducted in a
manner that may result in dis-equilibrium of wetlands or stream beds or banks, adjacent to or upstream
and down stream of the above structures. All sediment and erosion control devices shall be removed and

q Page 3
the natural grade restored within two (2) months of the date that the Division of Land Resources or locally
delegated program has released the project:
5. Diffuse Flow
All stormwater shall be directed as diffuse flow at non-erosive velocities through the protected stream
buffers and will not re-concentrate before discharging into the stream as identified within 15A NCAC 2B
.0233(5)
6. Protective Fencing
The outside buffer, wetland or water boundary and along the construction corridor within these
boundaries approved under this authorization shall be clearly marked with orange warning fencing (or
similar high visibility material) for the areas that have been approved to infringe within the buffer,
wetland or water prior to any land disturbing activities to ensure compliance with 15 NCAC 2H, Section
.0500.
7. Certificate of Completion
Upon completion of all work approved within the 401 Water Quality Certification or applicable Buffer Rules,
and any subsequent modifications, the applicant is required to return the attached certificate of completion to
the Wetlands, Buffers, Stormwater, Compliance and Permitting Unit (WeBSCaPe), North Carolina Division of
Water Quality, 1650 Mail Service Center. Raleigh, NC, 27699-1650.
Violations of any condition herein set forth may result in revocation of this Certification and may result in
criminal and/or civil penalties. The authorization to proceed with your proposed impacts or to conduct impacts to
waters as depicted in your application and as authorized by this Certification, shall expire upon expiration of the
404 or CAMA Permit.
If you wish to contest any statement in the attached Certification you must file a petition for an administrative
hearing. You may obtain the petition form from the Office of Administrative Hearings. You must file the
petition with the Office of Administrative Hearings within sixty (60) days of receipt of this notice. A petition is
considered filed when it is received in the Office of Administrative Hearings during normal office hours. The
Office of Administrative Hearings accepts filings Monday through Friday between the hours of 8:00am and
5:00pm, except for official state holidays. The original and one (1) copy of the petition must be filed with the
Office of Administrative Hearings.
The petition may be faxed-provided the original and one copy of the document is received by the Office of
Administrative Hearings within five (5) business days following the faxed transmission.
The mailing address for the Office of Administrative Hearings is:
Office of Administrative Hearings
6714 Mail Service Center
Raleigh, NC 27699-6714
Telephone: [phone], Facsimile: (919)-431-3100
A copy of the petition must also be served on DENR as follows:
Ms. Mary Penny "Thompson, General Counsel
Department of Environment and Natural Resources
Page 4
1601 Mail Service Center
Raleigh, NC 27699-1601
Unless such a petition is filed, this Certification shall be final and binding.
This letter completes the review of the Division of Water Quality under Section 401 of the Clean Water Act and
the Neuse River basin riparian buffer protection rule as described within 15A NCAC 2B .0233. If you have any
questions, please telephone Lauren Witherspoon, at 919-791-4251
Sincere y,
12 1
Danny S /ater Surface Protection Section Supervisor
Raleigh Regional Office
Enclosures: GC 3819
Certificate of Completion
cc: Jamie Shern - USACE Raleigh Regulatory Field Office
DWQ Central Office- WeBSCaPe- 1650 Mail Service Center
RRO File Copy
DLR RRO
Phil May, Carolina Ecosystems, Inc., 3040 NC 42 West, Clayton, NC 27520
Filename: 11-0767_Mango Creek Intcrcptor Sewer Replacement_401_NBR_Approval
.y
b