20051986 Ver 5_More Info Received_20121119

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.w E'j BURDETTE LAND CONSULTING, INC.
10212 Creedmoor Road - Raleigh, North Carolina 27615
Telephone [phone] — Fax [phone]
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November 19, 2012
Ms. Karen Higgins
Wetlands, Buffers, Stormwater Compliance r[!NO and Permitting Unit
NC Division of Water Quality
512 N. Salisbury Street 2012
Raleigh, North Carolina 27604
RE: Permit Modification Additional Information
Legend Oaks Subdivision Phase I11, Chapel Hill, Chatham County, NC
USACE Action ID #: SAW - 200900106
DWQ Project #: 20051986, Ver. 5
BLC Project #: 7145
Dear Ms. Higgins:
On November 8, 2012, we received your agency's request for additional information on the
subject project to process our request for a modification to Individual Certification #3787. The
information requested and our response is listed below.
1. Please provide details and clarification on the design of the outlet protection, proposed
as natural channel design. The figures included with the modification request show fully
armored dissipater pads with footprints extending beyond the width of the existing
channel.
Outlet protection proposed for the project extends beyond the width of the existing
channel to protect against erosion during high flows. To maintain aquatic function within
the outlet protection, rip rap will be imbedded into the stream bed to maintain the
stream's original dimension, pattern and profile. The original stream invert would be
maintained along length of the outlet protection except for a plunge pool at the end the
culvert, which dissipates the energy, and foot wide berm that serves as the lip of the pool.
Therefore, aquatic life passage would be maintained during low flow conditions similar

Ms. Higgins
November 19, 2012
Page 2 of 2
to the original channel's width and depth along the outlet protection even with rip rap
armoring beyond the original channel dimensions to prevent erosion during high flows.
This type of proposal to restore the aquatic function of the stream channel within the
outlet protection to mitigate for the impacts has been approved previously. Please do not
hesitate to give me a call if you would like a project reference.
Also, attached is an updated agent authorization form for Mr. Brantley Powell whose address has
changed. If you have any questions about information provided, please do not hesitate to call me
at (919) 841 -9977.
Sincerely,
Burdette Land Consulting, Inc.
Jenni er A. Burdette
Environmental Specialist
Attachment
c: Brantley Powell — HBP Properties, LLC
Trenton Stewart — Arcadia Consulting Engineers
Monte Matthews - USACE

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:'W E $URDETTE LAND CONSULTING, INC.
10212 Creedmoor Road - Raleigh, ;North Carolina 27615
$ Telephone [phone] — Fax [phone]
AGENT AUTHORIZATION FORM
US Army Corps of Engineers
Raleigh Regulatory Field Office
3331 Heritage Trade Drive, Suite 105
Wake Forest, North Carolina 27587
To Whom It May Concern:
North Carolina Division of Water Quality
Central Office
Mail Service Center 1650
Raleigh, North Carolina 27699
By signing below, the current property owner gives representatives of Burdette Land
Consulting, Inc, permission to act as their authorized agent for jurisdictional and isolated waters
and riparian buffer determinations, delineation, and permitting for the subject project. This
authorization includes permission to enter the site to conduct site meetings with US Army Corps
of Engineers and NC Division of Water Quality personnel, as necessary.
Project Name: Legend Oaks Phase III
BLC Project #: 7145
Current Property Owner or Easement Holder:
Name: I IBP Properties LLC - Brantley Powell
(include contact person if a corporation, partnership, or government)
Mailing Address: 5210 Driftwood Lane
Morehead City, NC 28557
Telephone: [phone]
Email: _ HBPowell(2aol.com
fA )C
Signature Print Name (includA title, if appro ria )
Io ;�gA
Date