20040275 Ver 6_Site Inspection_20110519

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NC®ENR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue Coleen H. Sullins Dee Freeman
Governor Director Secretary
May 19, 2011
MEMORANDUM
To: Stephanie Braquet, Division Environmental Specialist, NCDOT Division 9, e-copy only
From: Amy Euliss
Subject: Site Visit Follow-up
TIP No. 1-2304AC
Davidson and Rowan Counties
This memo is a follow-up to our site visit of the Yadkin River Bridges and 1-85 Widening project in
Davidson and Rowan Counties on May 18, 2011. 1 appreciate the time you and other DOT staff, as well
as Flat Iron-Lane staff spent with me with reviewing 401 and Construction Stormwater Permit sites for
this project.
The following items are provided to help document ourjoint site visit efforts and to assist the NCDOT
staff with current project status documentation. There are sites that were not visited on this date. Only
sites visited are discussed below. They are discussed in the order they were reviewed.
Site 2
We did not visit this site. We are still waiting for turbidity and pH readings from the air drilling
operation. No air drilling has occurred in the river, to date.
Site 5
Installation of two pipes has been completed. Immediately upstream of the first pipe, two headcuts have
formed. I requested installation of rock or log veins be installed to stop the headcut. The first vein needs
to be installed immediately upstream of the pipe, where there is an obvious change in grade. The second
needs to be installed at the line of orange fencing. If the drop of either vein is greater than 1', additional
veins will need to be installed. Details of the log vein and cross vein were emailed to you on May 18,
2011.
The section between the pipes has been rock lined. The inlet and outlet of the second pipe look good.
Site 9
The pipe had just been laid. The channel inlet was over-excavated to allow for pipe installation and
burial. I am concerned a headcut will develop here, as in site 5. 1 am okay with backfilling the hole with
rock to bring the channel bed elevation even with the pipe. 1 suggest placing organic soil and/or smaller
rock in with the class B to fill the voids. The rock should not be placed above the elevation of the pipe
inlet. If a headcut still develops, a rock or log vein will need to be installed.
In future pipe installations, 1 would suggest stock piling the material that is removed for the pipe
installation, and using it to restore the stream bed to preconstruction contours.
No thCarolina
Natum'2i
North Carolina Division of Water Quality 585 Waughtown Street Phone [phone] Customer Service
Internet: www.nmaterqualityorg Winston-Salem, NC 27107 17AX (336) 7714630 1-877-623-6748
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Memorandum
Stephanie Braquet
May 19, 2011
Site 6
We looked at the pipe inlet and outlet on the west side of 1-85. The inlet looked as though it had
stabilized. Please monitor to see if a headcut forms. A channel has formed inside the pipe. Just beyond
the pipe outlet, a silt check needs some maintenance.
Once you know the measures you will take to restore the areas mentioned above, we will fill out an in-
field modification to handle the changes. Please consult John Thomas with the USACE regarding any
changes to the permit drawings.
We will be back out in the next couple of months to continue to monitor on-going changes to the
permitted areas. Again, thank you for your time.
Cc: Darin Waller, NCDOT- Rowan County Resident Engineers Office, e-copy
Kent Boyer, NCDOT-Division 9, DEO, e-copy
Casey Hurley, Project Engineer, Lane Construction, e-copy
John Thomas, US Army Corps of Engineers, Raleigh Field Office, e-copy
Phil Suggs, NCDOT Roadside Environmental, Div 9 and 10, e-copy
DWQ Wetlands/401 Transportation Group, e-copy
File Copy