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| Guatemala Sinkhole, 2010 Photograph by Daniel LeClair, Reuters |
The group suggested that from hereon, the people should continue to monitor for further sinkhole and/or cave collapse and subsidence in the areas mentioned in their reports.
They must also exercise extra vigilance especially during heavy, continuous rains brought about by typhoon or monsoon rains, and during aftershocks; monitor for tension cracks that are widening and/or progressing and to immediately report them to their municipal authorities or MDRRMOs; cordon off identified areas of sinkhole and/or cave collapses; observe for sunken or displaced surfaces along National Roads and report these situations to their municipal authorities or their MDRRMOs; limit the load capacity of vehicles passing on these types of roads where signages should be put up indicating the threat of subsidence, and if possible, find alternative routes to lessen the load brought about by vehicles; demolish badly-damaged structures to decrease load;
In areas that there might be sinkholes, dwelling units should be made of light materials and advise that two-storey structures are not advisable; temporary relocation should be given to those residents near the tension cracks, many collapsed sinkholes, and/or subsiding grounds; six months to one year observation period of cracks progression and/or continued subsidence; determine if the area may be habitable if the ground becomes stable after the recommended observation period of six months to one year; drying-up of wells, water-filled sinkholes/caves are indicators of further ground movement and shift in flow directions of subterranean rivers.
For health safety, avoid drinking from newly-emergent springs unless checked for water quality or potability; and avoid disposing of garbage and wastewaters to sinkholes and caves to prevent contamination of groundwater.
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by www.theboholstandard.com
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