20181589 Ver 2_More Info Received_20190626

Strickland, Bev
From:
Alea Tuttle <[e-mail]>
Sent:
Wednesday, June 26, 2019 10:50 AM
To:
Amanda Jones ([e-mail]); Leslie, Andrea J; Price, Zan (George)
Cc:
Clement Riddle; Andrew Bick ([e-mail]); Parker Andes
Subject:
[External] Biltmore French Broad River and Swannanoa River bank stabilization project
(SAW -2018-02171; DWR# 18-1589)
Attachments:
sheet 8 rev.pdf
External email. Do
not click links or open attachments unless you verify. Send all suspicious email as an attachment to
[e-mail]
Amanda, Andrea and Zan,
This email is regarding the permit modification request for the Biltmore estate riverbank stabilization (SAW -2018-02171;
DWR# 18-1589), in which the applicant has requested an additional access point to stabilize proposed Impact S9. The
neighboring property owner, Norfolk Southern Railway, will not cooperate to provide egress to the repair site from
across the Swannannoa via Meadow Rd. The new proposed access is approximately 400 ft downstream from the bank
stabilization location (Impact S9), from the left bank, which is the nearest point at which the streambank can be
reasonably utilized for in -stream access. The section of bank in-between the repair and the proposed access is nearly
vertical, with well-established canopy vegetation, and with very little distance between the Biltmore road and the
stream bank. The new proposed access location is a gently sloping section of bank, with few trees, and with sufficient
space inbetween the road and the bank to allow access without impeding traffic. As mentioned, utilizing the left bank
access point would require tracking in the river bed upstream to move equipment and materials to the site, in a similar
fashion to impact 5-10 bank repair location.
ClearWater Environmental Consultants met onsite June 25, 2019 with Zan Price of DWR, Andrew Bick of Headwaters
Engineering, and Parker Andes of Biltmore company to examine the proposed location, and discuss alternatives and
strategies for impact minimization. The following conditions were discussed:
1) Construction equipment would operate within the channel under low flow conditions, with no rain in the
forecast. This repair is intended to be performed later in the summer season when low flows are typically at
their minimum for the year (Le August/September)
2) The number of trips will be minimized to the greatest extent possible. One approach to minimize in -channel
work is to operate equipment within the channel only to build the lower section of the repair. Then, operate
equipment from the top of bank to accomplish the upper section of the repair once the bottom section is
complete. However, operating from the top of bank will require closing one lane of traffic along the Biltmore
access road, and occasionally halting all traffic in both directions periodically.
3) Construction materials will be brought to the repair site on track dump trucks equipped with rotating beds via a
straight line through the channel along the left bank in as few trips as possible. The return trip would be made
in the same path and would not require turning around within the channel to minimize disturbance of the
substrate. When possible, construction materials will be delivered from the top of bank.
4) All equipment will be assessed to be in good working condition, and inspected for fuel and oil leaks and prior to
operating within the channel.
I have attached the plan of work from Headwaters Engineering which would replace the plan in the permit modification
request Impact S11 with 400 LF of temporary impacts to the streambed. Please let me know if there is any additional
information you need to determine approval of this permit modification request.

Thank you,
Alea K. Tuttle
CLEqrW&er
32 Clayton Street
Asheville, NC 28801
Office: 828-698-9800
Mobile: [phone]
alea(cDcwenv.com

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DATE: JUNE 2019
SCALE: AS SHOWN
LEGEND
PLAN
GEOLIFTS 0 60' 120' 180' SWANNANOA
SHEET 8 OF 12