20140762 Ver 4_sediment loss on R-2915 C_20200414

Wanucha, Dave
From:Hining, Kevin J
Sent:Monday, April 13, 2020 5:40 PM
To:Wanucha, Dave
Subject:sediment loss on R-2915 C
Attachments:R-2915 C sediment loss map.pdf; east side ditch.jpg; Lemly Rd.jpg; UT by Lemly
Rd.jpg; west side ditch.jpg
Hey Dave,

Hope all is well!

We ended up with 5-6 inches of rain in Ashe County last night, and while the R-2915 A and B sections held up well, we
lost sediment on the C section. Specifically, to a tributary of the South Fork New River, and two adjacent ditches that
feed the South Fork New. All three sites are close to each other – nr the beginning of the C section, just north of the
South Fork New River. I attached a map of the area and the three sediment loss sites, as well as photos.

The contractor was on site first thing this morning cleaning up. While I’m sure some of the sediment entered the South
Fork New River, and was lost to the river, they were able to capture approximately 10 cubic yards from the UT and
adjoining floodplain/yards on Lemly Road (I’m guessing you have visited the site before). The site is residential, so along
with sediment from R-2915 C there was also quite a bit of gravel from the private road/driveway and there were three
settling ponds that also washed away that the landowner had built in the stream to help filter sediment from a koi pond
that they have. That’s all to say, while it was a lot of material, not all of the material we collected came from the R-2915
C project. I attached a photo of the UT, as well as a photo of the private road.

Also, there are two adjacent ditches (labeled east side and west side ditch in photos) at the beginning of the C section
that flow into the South Fork New. Both ditches were full of sediment today and will need to be cleaned out. I’m sure
some sediment from both ditches entered the South Fork New, but not sure how much. The whole floodplain was
under water before I arrived, so its hard to say how much washed into the river, but I would estimate and hope that any
loss to the river was minimal.

Thanks and let me know if you need any additional information.

Kevin

Kevin Hining
Division 11 Environmental Officer
North Carolina Department of Transportation

336 903 9129 office
828-386-7202 cell
[e-mail]

801 Statesville Rd.
PO Box 250
North Wilkesboro, NC 28659

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