Three Astoria residences were evacuated after a
landslide last Thursday brought down trees and debris on the south side of Duane Street
between 5th and 6th. Occupants were
allowed to return to their homes the following day.
At a special meeting of the Astoria City Council
yesterday (Thurs), Nathan Crater, Assistant City Engineer, presented the
findings of the city’s on-call geo-technical firm.
Crater1.wav; (:39) “Landslide Technology
characterized this as a relatively shallow slide. They’re not finding any signs of deeper
seated movement, which is positive.
Unfortunately there is a portion of soil about 30 feet above the top of
the slide scar which is relatively unstable, and has a high likelihood of
coming down at some point. So because of
this Landslide Technologies gave us two primary recommendations. One was to remove the trees from the slide
area itself, and the adjacent area, to eliminate any hazards coming down the
hill, and the second recommendation was to remove the soil from the road and
provide a catchment area in the event that more soil does come down.”
City staff will investigate
erosion control measures. A temporary
containment barrier will be installed and city staff will work with Landslide
Technologies on long term mitigation measure.
Crater the estimate for the initial emergency clean up effort is about
25 thousand dollars to date.
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