20050732 Ver 13_Approval Letter_20090831

A ??
NCDENR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue Coleen H. Sullins
Governor Director
August 31, 2009
Mr. William S. Mumford
NNP - Briar Chapel, LLC
16 Windy Knoll Circle
Chapel Hill, NC 27516
Dee Freeman
Secretary
Re: Briar Chapel, Chatham County
DWQ Project # 20050732, Ver. 13; USACE Action ID. No. 200121252
APPROVAL of 401 Water Quality Certification with Additional Conditions - MODIFICATION
Dear Mr. Mumford:
Attached hereto is a copy of Certification No. 3567 issued to Mr. William S. Mumford of NNP- Briar
Chapel, LLC, Inc., dated August 31, 2009. This Certification replaces the Certification issued to you
on January 11, 2008, July 21, 2009, and July 24, 2009. In addition, you should get any other federal,
state or local permits before you go ahead with your project including (but not limited to) Solid Waste,
Sediment and Erosion Control, Stormwater, Dam Safety, Non-discharge and Water Supply Watershed
regulations.
If we can be of further assistance, do not hesitate to contact us.
Sinc ly,
oleen Sullins
KCCCHS/cbk/ jm

Attachments: Certificate of Completion
cc: Becky Fox, EPA, 1307 Firefly Road, Whittier, NC 28789
U.S. Army Corps of Engineers, Raleigh Regulatory Field Office, Wilmington District
Lauren Witherspoon, DWQ Raleigh Regional Office
DLR, Raleigh Regional Office
File Copy -
Nicole Thomson, S&EC, P.A., 11010 Raven Ridge Road, Raleigh, NC 27614
Filename: 050732Verl3BriarChapel(Chatham)401 _IC_MOD2_Revised
401 Oversight/Express Review Permitting Unit
1650 Mail Service Center, Raleigh, North Carolina 27699-1650
Location: 2321 Crabtree Blvd., Raleigh, North Carolina 27604
Phone: [phone] FAX: [phone]
Internet: hRp:llh2o.enr.state.nc.us/ncwetlands/
NorthCarolina
;Vaturallty
An Equal Opportunity 1 Affirmative Action Employer
NNP-Briar Chapel, LLC
Page 2 of 6
August 31, 2009
NORTH CAROLINA 401 WATER QUALITY CERTIFICATION
THIS CERTIFICATION is issued in conformity with the requirements of Section 401 Public Laws 92-
500 and 95-217 of the United States and subject to the North Carolina Division of Water Quality (DWQ)
Regulations in 15 NCAC 2H, Section .0500 to Mr. William S. Mumford of NNP- Briar Chapel, LLC to fill
0.4374 acres of 404/wetland (permanent impact), 0.197 acres 404/wetland (temporary impact), 2,154 linear
feet of perennial stream (permanent impact), 612 linear feet of perennial stream (temporary impact), 83
linear feet of intermittent stream (permanent impact), and 22 linear feet of intermittent stream (temporary
impact), in the Cape Fear River Basin, to construct the Briar Chapel residential and mixed use development
at the site. The site is located west of U.S. Highway 15-501, and north of Andrew's Store Road (SR 1528),
and south of Mann's Chapel Road (SR 1532), approximately 5 miles south of Chapel Hill, in Chatham
County, North Carolina, pursuant to a permit application dated May 8, 2009, and received by the DWQ on
May 8, 2009, by Public Notice issued by the USACE on May 22, 2009, and received by the DWQ on May
22, 2009, and by all additional correspondences received by the DWQ on May 20, 2009 and June 25, 2009.
The application and supporting documentation provides adequate assurance that the proposed work will
not result in a violation of applicable Water Quality Standards and discharge guidelines. Therefore, the
State of North Carolina certifies that this activity will not violate the applicable portions of Sections 301,
302, 303, 306, 307 of PL 92-500 and PL 95-217 if conducted in accordance with the application, the
supporting documentation, and conditions hereinafter set forth.
This approval is only valid for the purpose and design submitted in the application materials and as
described in the Public Notice. If the project is changed, prior to notification a new application for a new
Certification is required. If the property is sold, the new owner must be given a copy of the Certification
and approval letter and is thereby responsible for complying with all conditions of this Certification. Any
new owner must notify the Division and request the Certification be issued in their name. Should wetland
or stream fill be requested in the future, additional compensatory mitigation may be required as described
in 15A NCAC 2H .0506 (h) (6) and (7). If any plan revisions from the approved site plan result in a
change in stream or wetland impact or an increase in impervious surfaces, the DWQ shall be notified in
writing and a new application for 401 Certification may be required. For this approval to be valid,
compliance with the conditions listed below is required.
Conditions of Certification:
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
404/401 Wetlands 0.4374 (acres) - permanent Table 2, Application, and Public Notice
impact
404/401 Wetlands 0.197 (acres) - temporary impact Table 2, Application, and Public Notice
Stream (perennial) 2,154 (linear feet) - permanent Table 2, Application, and Public Notice
impact
Stream (perennial) 612 (linear feet) - temporary Table 2, Application, and Public Notice
impact
Stream (intermittent) 83 (linear feet) - permanent Table 2, Application, and Public Notice
impact
Stream (intermittent) 22 (linear feet) - temporary Table 2, Application, and Public Notice
impact
NNP-Briar Chapel, LLC
Page 3 of 6
August 31, 2009
Sediment and Erosion Control:
2. 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.
3. 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 404/401 Permit Application. 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;
4. 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 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. 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.
Continuing Compliance:
6. Mr. William S. Mumford and NNP- Briar Chapel, LLC shall conduct construction activities in a
manner consistent with State water quality standards (including any requirements resulting from
compliance with section 303(d) of the Clean Water Act) and any other appropriate requirements of
State law and federal law. If the Division determines that such standards or laws are not being met
(including the failure to sustain a designated or achieved use) or that State or federal law is being
violated, or that further conditions are necessary to assure compliance, the Division may reevaluate
and modify this Certification to include conditions appropriate to assure compliance with such
standards and requirements in accordance with 15A NCAC 2H.0507(d). Before modifying the
Certification, the Division shall notify Mr. William S. Mumford and NNP- Briar Chapel, LLC and the
US Army Corps of Engineers, provide public notice in accordance with 15A NCAC 2H.0503 and
provide opportunity for public hearing in accordance with 15A NCAC 2H.0504. Any new or revised
conditions shall be provided to Mr. William S. Mumford and NNP- Briar Chapel, LLC in writing,
shall be provided to the United States Army Corps of Engineers for reference in any Permit issued
NNP-Briar Chapel, LLC
Page 4 of 6
August 31, 2009
pursuant to Section 404 of the Clean Water Act, and shall also become conditions of the 404 Permit
for the project;
7. Construction Stormwater Permit NCG010000
Upon the approval of an Erosion and Sedimentation Control Plan issued by the Division of Land
Resources (DLR) or a DLR delegated local erosion and sedimentation control program, an NPDES
General stormwater permit (NCG010000) administered by DWQ is automatically issued to the
project. This General Permit allows stormwater to be discharged during land disturbing construction
activities as stipulated by conditions in the permit. If your project is covered by this permit
[applicable to construction projects that disturb one (1) or more acres], full compliance with permit
conditions including the sedimentation control plan, self-monitoring, record keeping and reporting
requirements are required. A copy of this permit and monitoring report forms may be found at
h1W. //h2o. enr. state. nc. us/su/Forms Documents. htm.
Mitigation:
8. Compensatory Mitigation
Compensatory stream mitigation shall be accomplished by using 2,127 linear feet of stream
mitigation credit at the Harpers Crossroads stream mitigation site and the remaining 27 linear feet of
required stream credit (10:1 ratio = 270 linear feet) from the 63,412 linear feet of available onsite
stream preservation. These mitigation efforts shall be protected through use of conservation easement
written to satisfy the US Army Corps of Engineers. Uses which may be allowable in the protected
stream buffers include water dependent activities and greenway trails upon additional written
approval of the Division of Water quality and the US Army Corps of Engineers. These provisions
should be explicitly reflected in the conservation easements, or similar mechanisms, written to satisfy
the USACE.
The Permittee shall provide stream restoration in accordance with the plan entitled `Harpers
Crossroads Stream Restoration Plan,' dated September 2005. The restoration site, which was
authorized with a separate DA nationwide permit (USACE Action Id No. 200420489) has already
been constructed. The as-built report dated June 12, 2006 states the total stream restoration generated
by the project as 2,127 linear feet. Within 90 days of the USACE's determination that the Harpers
Crossroads Stream Restoration Project has met the success criteria outlined in the `Harpers
Crossroads Stream Restoration Plan,' the permittee shall arrange for the transfer of the existing
conservation easements to a third-party grantee, subject to approval by the USACE.
Type of impact Compensatory Mitigation Required River and Sub-basin Number
Stream (perennial) 2,154 (linear feet) Cape Fear/03030002
9. Stormwater Management Plan Implementation Procedures (No Further Approval Needed)
• The approved SMP must be constructed and operational before any permanent building or
other structure is occupied at the site. If a development is phased, then the approved SNIP for
each future phase must be constructed and operational before any permanent building or other
structure associated with that phase is occupied.
• The approved SMP as well as drainage patterns must be maintained in perpetuity.
• The SMP may not be modified without prior written authorization from the SMP approval
authority. If the SMP falls under another state stormwater program, then a copy of the
approval letter and the modified SMP must be submitted to the 401 Oversight/Express Unit
prior to the commencement of the modifications.
NNP-Briar Chapel, LLC
Page 5 of 6
August 31, 2009
10. Culvert Installation
All work in or adjacent to stream waters shall be conducted in a dry work area. Approved BMP measures
from the most current version of NCDOT Construction and Maintenance Activities manual
(http://www.ncdot.org/doh/operations/BMP manual/download/BMP Manual.pdf)
such as sandbags, rock berms, cofferdams and other diversion structures shall be used to prevent
excavation in flowing water.
Culverts required for this project shall be installed in such a manner that the original stream profiles
are not altered. Existing stream dimensions (including the cross section dimensions, pattern, and
longitudinal profile) must be maintained above and below locations of each culvert. Culverts shall be
designed and installed to allow for aquatic life movement as well as to prevent head cutting of the
streams. If any of the existing pipes are or become perched, the appropriate stream grade shall be re-
established or, if the pipes installed in a perched manner, the pipes shall be removed and re-installed
correctly.
Culvert(s) shall not be installed in such a manner that will cause aggradation or erosion of the stream up
or down stream of the culvert(s). Existing stream dimensions (including the cross section dimensions,
pattern and longitudinal profile) shall be maintained above and below locations of each culvert.
Placement of culverts and other structures in waters, streams, and wetlands must be placed below the
elevation of the streambed by one foot for all culverts with a diameter greater than 48 inches, and 20
percent of the culvert diameter for culverts having a diameter less than 48 inches, to allow low flow
passage of water and aquatic life. Design and placement of culverts and other structures including
temporary erosion control measures shall not be conducted in a manner that may result in dis-
equilibrium of wetlands or streambeds or banks, adjacent to or upstream and down stream of the
above structures. The applicant is required to provide evidence that the equilibrium shall be
maintained if requested in writing by DWQ.
The establishment of native, woody vegetation and other soft stream bank stabilization techniques
must be used where practicable instead of rip rap or other bank hardening methods. If rip-rap is
necessary, it shall not be placed in the stream bed, unless specifically approved by the Division of
Water Quality.
Installation of culverts in wetlands must ensure continuity of water movement and be designed to
adequately accommodate high water or flood conditions.
Upon completion of the project, the Applicant shall complete and return the enclosed "Certificate of
Completion" form to notify NCDWQ when all work included in the §401 Certification has been
completed. The responsible party shall complete the attached form and return it to the 401 /Wetlands
Unit of the NC Division of Water Quality upon completion of the project. Please send photographs
upstream and downstream of each culvert site to document correct installation along with the
Certificate of Completion form.
11. 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 401/Wetlands Unit, North Carolina Division of Water Quality, 1650
Mail Service Center, Raleigh, NC, 27699-1650.
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 or CAMA Permit.
NNP-Briar Chapel, LLC
Page 6 of 6
August 31, 2009
If this Certification is unacceptable to you, you have the right to an adjudicatory hearing upon written
request within sixty (60) days following receipt of this Certification. 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, N.C. 27699-6714. If
modifications are made to an original Certification, you have the right to an adjudicatory hearing on the
modifications upon written request within sixty (60) days following receipt of the Certification. Unless
such demands are made, this Certification shall be final and binding.
This the 3151 day of August
DIMS N OF AT R Q ITY
oleen Sullins
CHS/cbk/Ym
3567