20042059 Ver 3_Stormwater Approval_20111018

PWIWA
3 6.s a
north Carolina De ,ar ment of Enviror,men+ and Natural peso; Irces
Division of Water duality
Beverly Eaves Perdue Coleen H. Sullins Dee Freeman
Governor Director Secretary
October 18, 2011
DWQ Project # 04-2059v2
Wake County
CERTIFIED MAIL: RETURN RECEIPT REQUESTED
Mr. Whit Wheeler
City of Raleigh - Public Utilities Department
219 Fayetteville Street Mall
Raleigh, NC 27602
Subject Property: City of Raleigh: Dunn Road Sewer Extension
UT to Neuse River [030402, 27-(20.7), WSIV, NSW]
APPROVAL OF MODIFICATIONS TO STORMWATER OUTFALL WITHIN A PROTECTED
NEUSE RIVER BASIN RIPARIAN BUFFER
Dear Mr. Wheeler:
On December 14, 2009, the Division of Water Quality (DWQ) issued a 401 Water Quality Certification
and Buffer Authorization to impact the following waters and buffers in order to construct a new sewer
line:
• 0.39 acre of jurisdictional wetland,
• 88 linear feet of perennial stream (temporary impact),
• 120 linear feet of intermittent stream (temporary impact),
• 91,523 square feet of Zone 1 Neuse River protected riparian buffer, and
• 96,835 square feet of Zone 2 Neuse River protected riparian buffer.
On October 12, 2011, the DWQ received a request for a revision to the 401 Water Quality Certification
and Buffer Authorization from your consultant, Mr. Justin Story of Dewberry & Davis (dated June 29,
2011). The purpose of the revision was to address erosion issues that are occurring in the sewer easement
and the riparian buffer adjacent to the Summermill at Falls River Apartments.
The proposed revisions to the Dunn Road Sewer Extension Project have been reviewed and satisfy the
stormwater management condition of the 401 Water Quality Certification. The modifications to the
stormwater outlet as approved by this office must be maintained in perpetuity. No changes to the
structural stormwater practices shall be made without written authorization from the DWQ. The
stormwater management structures shall have maintenance access to allow for the ability to maintain the
structures, and to perform corrective actions. The stormwater easements shall be recorded to provide
protection of the structures from potential alterations by future property owners.
You or your authorized agent shall provide a completed Certification of Completion Form to the DWQ
401 Program within ten (10) days of the project completion (available at:
http://portal.nedenr.oriz/web/wq/swp/ws/40 I/certsandpermits/appl/fy orms).
Wetlands, Buffers, Stormwater, Compliance and Permitting Unit (WeBSCaPe)
1650 Mail Service Center, Raleigh, North Carolina 27699-1650
Phone. [phone] FAX: [phone]
Web' www ncwaterquality.net
An Equal Opportunity 1 Affirmative Action Employer
Drnn Road Sanitary S. wer extension
N& 2 of 2
0, sober 18, 2011
This letter c tmpletes the revie v of the DWO unc er Section 401 of :he Clean Water A A. If you have an}
questions, please contact me at 919-807-6381.
Sincerely,
?
Annette Lucas, PE
Wetlands, Buffers and Stormwater Compliance and
Permitting (WeBSCaPe) Unit
AMLIaml
cc: Lauren Witherspoon, DWQ Raleigh Regional Office
Natalie Landry, DWQ Raleigh Regional Office
U.S. Army Corps of Engineers, Raleigh Regulatory Field Office
DLR, Raleigh Regional Office
File Copy
Justin Story, EIT, Dewberry & Davis, Inc., 2301 Rexwoods Drive, Suite 200, Raleigh, NC 27607
Filename: 040259v2Du nnRoadSa nita rySewerExt(W ake)_SW_Approve