United States Department of Transportation
i
Documentation of liquid de-icing agents utilized during the winter of 2005-2006.
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2006
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Abstract:During the winter of 2005-2006, the Maine Department of Transportation (MaineDOT), Bureau of
Maintenance and Operations experimented with several liquid de-icing products designed to pre-wet
granular materials. This experimentation was undertaken in an effort to determine which liquid de-icer
would be the most suitable replacement for the calcium chloride (LiquiDow) product previously used by
the Department. LiquiDow is no longer available from the supplier who was providing the product. It is
unclear at this time if LiquiDow can be obtained from one of the other suppliers in the industry.
A process was subsequently developed to document the results experienced by the Departments Highway
Maintenance crews. Several Crew Supervisors from each Region, representing a cross-section of
opinions, were interviewed as part of this process. A list of 10 questions (attached) was used to initiate an
informal discussion with each group. Results of these discussions, summarized by Region, are included in
Appendix A.
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