20090056 Ver 1_Restoration Plan Review_20090128

Greenbrier Creek Stream Restoration - Alamance and Chatham Coun...

Subject: Greenbrier Creek Stream Restoration - Alamance and Chatham Counties (09-0056)
From: Eric Kulz <[e-mail]>
Date: Wed, 28 Jan 2009 14:53:52 -0500
To: Toni Wyche Jones <[e-mail]>
CC: "[e-mail]" <[e-mail]>

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Toni:

DWQ has reviewed the proposed stream enhancement and preservation plans for the above-referenced property. Our only
question/concern is that due to the low gradient of the mainstem of Greenbrier Creek, installation of the raised riffle structures
may restrict base flow, resulting in a series of pools separated by the riffle structures. We hope the riffle material selected for the
project will allow for both downstream flow through the interstitial spaces and for exchange between groundwater and the base
flow (development of a hyporheic zone).

However, DWQ deems the project issued, and we hope you work with the designed and construction contractor to address these
concerns.

Have a great day,

Eric

Eric W. Kulz
Environmental Specialist
401 Oversight and Express Permitting Unit
2321 Crabtree Blvd., Suite 250
Raleigh, NC 27604
Phone: [phone]
Fax: [phone]

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1/28/2009 3: 15 PM