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October 17, 2016 Report
October 17, 2016 Report
Mosaic Fertilizer provides update on LiDAR Testing and Remediation Steps Related to News Wales Water Loss Incident
Recently, Mosaic completed a survey of the sinkhole cavity using LiDAR technology and other assessment tools. LiDAR is a remote sensing technology that uses light in the form of a pulsed laser to provide three-dimensional mapping. This technology expedites the remediation process compared to the legacy methods such as drilling and coring to develop the sinkhole dimensions.
Based on the survey results, the company now has a better understanding of the sinkhole dimensions – which is a critical step in remediating the sinkhole. The results show that the upper cavity is between 140 feet and 150 feet in diameter at its widest point and approximately 220 feet deep from the top of the gypstack.
Using this information, Mosaic will define a safe working perimeter on top of the gypstack, from which the company will conduct the remedial activities. We predict they will be complete before the spring of next year and will continue to look for opportunities to do so sooner.
The recovery well continues to perform as expected, capturing the attenuated process water lost as a result of the sinkhole. Onsite groundwater monitoring confirms that we are recovering that water.
As of October 17, there have been 763 residential wells sampled and 588 results have been returned. Water from 578 wells meet primary and secondary drinking water standards. There are ten wells for which that was not the case; each had one parameter that did not meet either a primary or secondary standard. That water however, is similar in quality to samples analyzed by the U.S. Geological Survey and Southwest Florida Water Management District in eastern Hillsborough and western Polk County that had not been impacted in any way by industry.
The results continue to indicate that they are in no way associated with the New Wales sinkhole incident. For more information, please visit our New Wales Incident site online.
We continue to work closely with FDEP and continue to keep Polk County and Hillsborough County apprised of our efforts to remediate the sinkhole.
Daily Well Testing Update
As of today, Mosaic has received 1,064 well water test requests. Environmental Consulting & Technology, Inc. (ECT) is prioritizing testing based on neighbor’s proximity to the New Wales facility. Neighbors who have requested an alternative means of testing are encouraged to receive a water test at no cost from the Florida Department of Environmental Protection (FDEP).
Testing and Bottled Water Requests as of October 17, 2016
As of 12:00 pm
|Scheduled 3rd party well tests||1,064|
|Site visits/samples taken||763|
|Expected site visits today*||42|
|Requests for bottled water||731|
*Plans could change based on residents’ availability or inclement weather.