19960722 Ver 1_Staff Comments_19990817

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NCDENR
DIVISION OF WATER QUALITY
August 17, 1999
Memorandum To: John Dorney
From: Todd St. John ) \ _ Q titRC?
,1I ivLeE-
Subject: Eagle Ridge Stream Relocation
Wake County
The proposed stream location plan has been approved by Wake County
Environmental Services, according to my conversation with Jake Taylor yesterday. The
approval is conditional upon the fact that the project perform correctly. In order for this
Office to approve the relocation plan, it is recommended that the following information
be provided:
1) A detailed landscaping plan should be provided that includes densities, locations and
species of proposed vegetation. Also, the current plan does not provide adequate 50
foot forested buffers on either side of the relocated stream channel in several areas.
The buffers and channel may also encroach upon railroad ROWS. Of particular
concern is the stability of the reaches of the relocated channel that are located along
the proposed fairway. Inadequate buffer vegetation (especially trees and other woody,
deep-rooted vegetation) may result in unstable channel reaches. These sections of
stream may require armoring (soft or hard) to ensure adequate stability. Also, the
inadequately buffered reaches should not count as mitigation for the relocated
channel.
2) A detailed biological and physical monitoring plan should be provided.
3) Adequate detail showing the "tie-in" of the relocated channel to the existing channel
at the bottom of the reach should be provided.
4) Additional detail of the rootwad revetment plans should be shown to include accepted
angle(s) of rootwad placement.
ern
NCDENR
DIVISION OF WATER QUALITY
August 17, 1999
Memorandum To: John Dorney
From: Todd St. John t?l
Subject: Eagle Ridge Stream Relocation
Wake County
The proposed stream location plan has been approved by Wake County
Environmental Services, according to my conversation with Jake Taylor yesterday. The
approval is conditional upon the fact that the project perform correctly. In order for this
Office to approve the relocation plan, it is recommended that the following information
be provided:
1) A detailed landscaping plan should be provided that includes densities, locations and
species of proposed vegetation. Also, the current plan does not provide adequate 50
foot forested buffers on either side of the relocated stream channel in several areas.
The buffers and channel may also encroach upon railroad ROWs. Of particular
concern is the stability of the reaches of the relocated channel that are located along
the proposed fairway. Inadequate buffer vegetation (especially trees and other woody,
deep-rooted vegetation) may result in unstable channel reaches. These sections of
stream may require armoring (soft or hard) to ensure adequate stability. Also, the
inadequately buffered reaches should not count as mitigation for the relocated
channel.
2) A detailed biological and physical monitoring plan should be provided.
3) Adequate detail showing the "tie-in" of the relocated channel to the existing channel
at the bottom of the reach should be provided.
4) Additional detail of the rootwad revetment plans should be shown to include accepted
angle(s) of rootwad placement.