20191577 Ver 1_Y2Q1_Photo_Sheet Bridge Monitoring_20220613

Biltmore Farms Project Ranger
Year 2 Quarter 1 — Photographic Documentation — 6/13/2022
Project Ranger has been authorized to begin construction of a bridge over the French Broad River
in a Section 404 and Section 10 issued by USACE on July 10, 2020, and the Division of Water
Resources Water Quality Certification Issued June 1, 2020. The site is located at 1600 Brevard
Road, in Asheville, NC (Figure 1). The Year 2 Quarter 1 qualitative assessment of the banks
upstream and downstream of the bridge location was performed by ClearWater on May 24, 2022, in
compliance with condition 8 of the DWR 401 Permit WQC004226 issued June 1, 2020. This
qualitative monitoring will be repeated quarterly for one year, or two bankfull events (whichever is
longer), and then annually for three years. Clearing for the bridge began in early February 2021.
With the completion of this report ClearWater has achieved quarterly monitoring for one year and
two bankfull events. Moving forward monitoring will be performed annually for three years to comply
with condition 8 of the 401 permit.
The assessment included collecting eighteen (18) georeferenced photographs of both banks of the
French Broad River and noting any existing visible areas of bank erosion (Figures 1 - 2). The
upstream extent of the study reach began at Bent Creek River Park, approximately 600 LF upstream
from the proposed bridge location, while the downstream extent ended at an overhead electric(OHE)
powerline crossing, approximately 1200 LF downstream from the proposed bridge location. The
photo points were georeferenced with Trimble sub-meter GPS device and collected both on foot and
by canoe. Three areas of active erosion or bare vertical banks were identified during the baseline
survey conducted on December 21, 2020 and were observed again during the May 24, 2022 survey.
One area of sediment aggradation was identified during the June 10, 2021 survey. Active sediment
aggradation was not observed during the Year 2 Quarter 1 monitoring.
Area 1 includes portions of bank erosion at Bent Creek Park on the left bank of the French Broad
River. This is visible in Photo Point 1. The erosion in Area 1 is likely due to the lack of a forested
buffer and heavy use of the banks by the general public to access the creek. No change was
observed.
Area 2 includes a vertical bare bank on the right bank of the French Broad River visible in Photo
Point 14. This bare bank is immediately downstream from a log debris jam, approximately 350 feet
downstream from the bridge location. No change was observed.
Area 3 includes vertical bare banks which are actively slumping and eroding, located on the right
bank of the French Broad River. The Area 3 erosion is visible from Photo Point 8 and Photo Point
16. This portion of bank lacks a forested buffer and is located in a maintained OHE right-of-way
(ROW). The location of the photo points and three areas of existing bank erosion are indicated on
the attached Overview Map (Figure 2).
Area 4 includes a previously documented bar of sediment aggradation along the right bank of the
French Broad River. This area formed approximately 75 feet downstream from the rip-rap causeway
near the bridge construction site (Figure 2). The aggradation affect was likely caused by an eddy
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current downstream of the temporary bridge causeway. The upland work area at this location was
surveyed and no instance of silt fencing failure or sediment escape into the river was observed. This
previously observed sediment aggradation has dissipated and is no longer visible following the
causeway removal.
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Photo Point 1 Facin Left Bank to Bent Creek River Park—No chap•e observed.
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Photo Point 3 Facin: Left Bank—Causewa was removed
Page 3 of 11

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Photo Point 4 Facing Left Bank-No change observed.
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Photo Point 5 Facing Left Bank-No change observed.
Page 4 of 11

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Photo Point 6 Facing Left Bank-No change observed.
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Photo Point 7 Facing Left Bank-No change observed.
Page 5 of 11

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Photo Point 7 Facing Downstream Left Banl< No change observed.
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Photo Point 8 Facing Upstream at Right Bank -No change observed.
Page 6 of 11

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Photo Point 9 Facin. Ri:ht Bank -No chan_e observed.
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Photo Point 10 Facin. Ri ht Bank-No chan.e observed.
Page 7 of 11

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Photo Point 11 Facin• Left Bank from Rock Outcro. —Causewa removed.
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Photo Point 12 Facin: Ri:ht Bank—Previous site of causewa ,has since been removed.
Page 8 of 11

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Photo Point 13 Facing Right Bank -No change observed.
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Photo Point 14 Facing Right Bank-No change observed.
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Vertical Bare Bank on Ri:ht Bank near Photo Point 14 -No chan t e observed.
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Photo Point 15 Facing Right Bank - No change observed.
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Photo Point 16 Facin_ Ri,ht Bank-No change observed.
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Photo Point 17 Facin: Downstream at Bent Creek Confluence -No change observed.
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Photo Point 18 Right Bank, Facing Downstream. North of Bridge Construction. Previously observed
sediment a__radation has dissi ated and •is no loner visible followin. the causewa removal.
Page 12 of 11