20140090 Ver 4_RE U-2579B permit site 23B and 28_20180227

Wanucha, Dave
From: Wanucha, Dave
Sent: Tuesday, February 27, 2018 12:15 PM
To: Euliss, Amy; Lastinger, James C CIV USARMY CESAW (US) ([e-mail])
Cc: Roden Reynolds, Bryan K CIV (US); Archer Sr, Wright
Subject: RE: U-2579B permit site 23B and 28_
Amy,
Based on previous Merger meeting conversations in regard to lengthy culverts, discussions centered around whether the inverts
needed to be buried a foot to facilitate fish passage and ensure channel stability. As I understand it, once lengths generally
reach around 300 feet, fish and wildlife will not enter the culvert and that more or less depends on if light can be seen at the
end. No aquatic passage due to culvert length creates concerns in terms of whether water quality standards will be met and
degradation or loss of designated uses relative to Smith Creek. However, a concern for long term stability, constructability and
maintenance as you stated below, in my mind, would outweigh passage concerns relative to culvert length. However, inlet and
outlets would need to be constructed so that upstream/downstream instability/bank erosion would be kept in check.
You may want to consult with WRC and FWS.
Is a culvert the only option? Are there maintenance concerns with a culvert of the proposed length?
Dave Wanucha
Division of Water Resources
Transportation Permitting Unit
NC Department of Environmental Quality
336-776-9703 office
336-403-5655 mobile
[e-mail]
NC DEQ Winston Salem Regional Office
450 West Hanes Mill Road, Suite 300
Winston Salem, NC 27105
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From: Euliss, Amy
Sent: Monday, February 26, 2018 3:30 PM
To: Lastinger, James C CIV USARMY CESAW (US) ([e-mail]) <[e-mail]>;
Wanucha, Dave <[e-mail]>
Cc: Roden Reynolds, Bryan K CIV (US) <[e-mail]>; Archer Sr, Wright <[e-mail]>
Subject: U-2579B permit site 23B and 28
On the U-2579B project, Smith Creek parallels existing I-40 Business in a steep ravine with unstable banks. On the opposite side
of Smith Creek there are a series of fish hatchery ponds. The permitted plan in the area is install rock plating involving a
retaining wall with soil nails. Since the project was permitted, Smith Creek has migrated closer to the proposed fill slope. The
Division is concerned about the constructability and long term stability of the wall, and the long term impacts to sedimentation
into Smith Creek. We permitted for 388' of permanent impacts and 188' of temporary impacts to Smith Creek at site 28 and
135' of permanent at site 23B. In discussing internally with our Hydraulics Unit and Division Construction, we believe our best
option long term for stability and maintenance of the transportation system would be to culvert the entire reach from the

existing culvert at site 23B until the end of existing site 28. I went back and reviewed the 4B and 4C minutes on the project to
see how, and the team was also concerned about the long term stability at the site.
Before we put a design on paper, we wanted to let you know what we were looking at and get your input. I'm thinking
permanent impacts from the outlet of the existing culvert to the end of site 28 would be approximately 770'. We would propose
mitigation for all new permanent (previously unmitigated) impacts. Please let me know your thoughts and/or concerns as soon
as possible so we can proceed with planning. Thanks.
I've attached a copy of the permitted drawings for this site for your reference.
Amy Euliss
Division 9 Environmental Officer
North Carolina Department of Transportation
336 747 7802 office
aeuliss .ncdot.qov
375 Silas Creek Parkway
Winston Salem, NC 27127-7167
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