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Officials: “Marked uptick in microquakes in past day” around giant sinkhole — Alert raised to Code 3

Published: May 5th, 2013 at 4:09 pm ET
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Title: 12:15 p.m. Advisory from the Office of Conservation
Source: Assumption Parish Police Jury
Date: May 5, 2013

The Office of Conservation, in consultation with Assumption Parish Incident Command, is advising the public that the Oxy 3/sinkhole monitoring alert status has been raised to Code 3 – requiring all work directly on the sinkhole, Oxy 3 pad and within the containment berm to cease until further notice. Seismic monitoring had detected a sustained increase in the trend of micro-earthquake (MEQ) activity in the area around the sinkhole and Oxy 3 over the past week, and a marked uptick in MEQs in the past day. This pattern of MEQ increase has been identified as an indicator of likely shifting and sloughing in the sinkhole and the area below it, based on past observations. The seismic activity is limited to the Oxy 3/sinkhole area, showing no indication of impact to the Oxy 1 area. Monitoring is constantly ongoing in the area and Conservation will advise the public of significant changes in subsurface conditions.

From Friday: Officials: Code 2 alert announced for giant sinkhole -- Increasing trend of micro-quakes -- Indications of shifting in and below area

Published: May 5th, 2013 at 4:09 pm ET
By
Email Article Email Article
4 comments

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