20050732 Ver 21_Stormwater Approval_20111004

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North Carolina Department of Environment and Natural Resources
Division of WUter Quality
Beverly Eaves Perdue Coleen H. Sullins Dee Freeman
Governor Director Secretary
October 4, 2011
CERTIFIED MAIL: RETURN RECEIPT REQUESTED
NNP - Briar Chapel, LLC
Attn: Mr. William Mumford, Vice President Newland Communities
16 Windy Knoll Circle
Chapel Hill, NC 27516
Subject Property: Boulder Point Drive Extension
STORMWATER MANAGEMENT PLAN APPROVAL
Dear Mr. Mumford:
DWQ Project # 05-0732v21
Chatham County
On January 11, 2008, the Division of Water Quality (DWQ) issued a revised 401 Water Quality
Certification to temporarily impact 339 linear feet of stream and 0.157 acre of 404 wetlands and to
permanently impact 1,666 linear feet of stream and 0.1590 acre of 4040 wetlands in order to construct the
Briar Chapel Subdivision in Chatham County.
In order to meet Condition 10 of the 401 Certification for this project, a stormwater management plan for
Briar Chapel Parkway and Boulder Point Drive Extension, dated June 22, 2011 and received July 1, 2011,
was reviewed by the DWQ. A revised stormwater management plan for Boulder Point Drive Extension,
dated September 2, 2011, was received September 6, 2011.
The DWQ has reviewed your SMP and supporting information, and approves the revised SMP to satisfy
the stormwater condition required by the 401 Certification. This approval is for the purpose and design
described in your application. If the property is sold, the new owner must be given a copy of this approval
letter and is thereby responsible for complying with all conditions.
In order to maintain compliance with the approved SMP, please follow the conditions listed below:
Description of the SMP: The SMP approved by this office consists of a temporary low density
area that will utilize Level Spreader-Vegetated Filter Strip (LS-VFS) devices to treat stormwater
runoff from the roadway area as well as provide diffuse flow offsite for the one-inch storm event.
As residential areas are constructed in the locations of these devices, they will be removed and
stormwater will be re-directed into a permanent BMP, likely a wet detention pond that will be
designed at that time. Within 30 months after the completion of this Boulder Drive
Extension Project, the permanent BMP devices must be installed and operational.
2. Operation and Maintenance of BMPs: The approved LS-VFS devices must be maintained in
accordance with the LS-VFS operation and maintenance (O & M) agreements signed by you on
June 28, 2011. The O & M agreements must transfer with the sale of the property or transfer of
Wetlands, Buffers, Stormwater, Compliance and Permitting Unit (WeBSCaPe)
1650 Mail Service Center, Raleigh, North Carolina 27699-1650
Phone: [phone] FAX [phone]
Internet: http://portal.ncdenr.org/web/wq/ws
An Equal Opportunity 1 Affirmative Action Employer
Mr. bvi(liam Mu:nford, 65-0732v21
-'age 2 of 2
Octooer 4, 2011
ownership/responsibility for the BMP facilities. D'YQ must be notifiad promptly of eve,y
transfer.
Thank you for your attention to this matter. If you have any questions or wish to discuss these
matters further please do not hesitate to contact me at 919-807-6381.
Sincerely,
Annette M. Lucas, P.E.
Wetlands, Buffers and Stormwater Compliance and
Permitting (WeBSCaPe) Unit
AML/aml
cc: U.S. Army Corps of Engineers, Raleigh Regulatory Field Office, Wilmington District, USACOE
Lauren Witherspoon, DWQ Raleigh Regional Office
File Copy
Grant Livengood, PE, McKim & Creed, 1730 Varsity Drive, Raleigh, NC 27606
Filename: 050732v21 BriarChapelParkway(Chatham)_SW_Approve