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UID:40b51bcd8172a092c786f879f1f44763325
CATEGORIES:Webinars
SUMMARY:The September 18, 2018 Sunny Day Landslide in Warrensville, Ashe County, North Carolina: Disaster Narrowly Averted Following a Series of Unfortunate Events
DESCRIPTION:
The September 18, 2018 Sunny
Day Landslide in Warrensville, Ashe County, North Carolina: Disaster Narrow
ly Averted Following a Series of Unfortunate Events
Join us for a webinar on December 7, 2021 at 2:
00 PM EST.
Speaker: Rick Wooten
A debris slide and subsequent fire on
September 18, 2018 destroyed the Life Store Bank building and damaged adjac
ent property in Warrensville, North Carolina. Employees in the bank at the
time narrowly escaped with minor injuries. Emergency responders determined
that the slide pushed a propane tank and an electrical generator against th
e building causing the subsequent fire. Slide debris damaged the bank and b
uried part of an unoccupied drive-through lane. NCGS geologists investigate
d the slide at the request of the Ashe County Emergency Management Departme
nt to assess slope stability for public safety concerns. The probable trigg
ering mechanism for the slide was rainfall from remnants of Hurricane Flore
nce which passed over the area on September 15th-18th, and had followed abo
ve normal precipitation during the month of August. Our investigation of th
e ~1,400m2 (~15,000ft2) debris slide revealed geologic conditions and hills
ide modifications that spanned previous years had predisposed the slope to
failure, and that unstable slopes remained at the site. A septic leach fiel
d involved in the 2018 slide was severely damaged, but it is unclear if the
septic system was a causal factor in the slide. Marginally stable colluvia
l deposits from past slope movements, a previous slide in 2000, and a propa
ne tank placed in a vulnerable location were early warning signs of the pot
ential problems that can be associated with mountainside development.
DTSTAMP:20240328T222244
DTSTART;TZID=America/New_York:20211207T130000
DTEND;TZID=America/New_York:20211207T140000
SEQUENCE:0
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