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controlled application, including anti-icing applications, with this season being <br /> the City's first experiment with those applications. <br /> Mr. Schwartz noted the process with brine in the new trucks flowing to the <br /> spinner, not salt, before spinning onto the pavement. <br /> Mr. Zweber noted that previous equipment (four tanks) had been obtained from <br /> Otter Tail County and were found more cumbersome and difficult to use that the <br /> current equipment. Mr. Zweber provided a visual demonstration of anti-icing <br /> examples used during the previous season and distinctions between pre-treating <br /> versus not pre-treating; as well as effectiveness for bituminous versus concrete <br /> surfaces. <br /> A joint study of MnDOT and Mankato State University was included in agenda <br /> packet materials for additional information. <br /> Mr. Dix, having done research on alternative products for ice control, noted that <br /> the study had proven inconclusive due to temperature variables; indicating that <br /> salt was still the best value. <br /> In addressing comparisons from 2006 to the previous season in 2011/2012, Mr. <br /> Zweber noted that ultimate goal was to find a product that broke the bond on <br /> pavement prior to a storm, allowing for less salt use once streets were plowed. <br /> Mr. Zweber provided the reduction the City had achieved for specific anti-icing <br /> routes versus other applications; additional efficiencies achieved for those routes <br /> based on pumping capacity and speed of application; and purchasing brine <br /> cooperatively with Ramsey County to further reduce costs; and cooperation <br /> between Ramsey County and the City of Roseville for some events and in chronic <br /> problem areas in Roseville. <br /> Mr. Zweber and Mr. Dix provided a detailed analysis of the brine mix for the <br /> most efficient and effective application, as well as cost-effectiveness; <br /> considerations for temperature and weather-related situations; use on sidewalks <br /> and pathways in addition to roadways; and most effective ice control product was <br /> a de-sugared sugar beet molasses product(Geo Melt). <br /> Discussion included effects of the products leaching into yards; difficulties in <br /> some sand/salt mixtures running off pavement created environmental issues; <br /> benefits in achieving safer driving conditions faster; re-use of sweepings and <br /> disposal based on the product; and current recycling through the City's leaf pick- <br /> up program tested for safety by getting the sand out of the salt through rate <br /> controls and application of products before driven down by too much traffic. <br /> Mr. Schwartz advised that, comparatively for a number of years, the City of <br /> Roseville saw, on a comparable mile basis, that it was using significantly less ice <br /> control products than most suburbs. <br /> Page 4 of 11 <br />