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CITY OF SOUTH BEND <br />Jerry J. Miller <br />Mayor <br />Donald L. Decker <br />Street Commissioner <br />Municipal Services Facility <br />701 West Sample Street <br />South Bend, Indiana 46621 <br />South Bend Common Council <br />County City Building <br />South Bend, Indiana 46601 <br />August 79 1973 <br />Subject: Request to purchase a storage and distribution <br />system for liquid Calcium Chloride to be used <br />for ice control. <br />Gentlemen: <br />Bare pavement driving is a condition people have come to <br />expect year around. It is the intent and responsibility <br />of this bureau to make every effort to afford the motorist <br />with this service. The only chemical available that will <br />effectively remove ice from pavements is salt, however <br />even salt has its limitations. Before salt will attack ice <br />it must have the assistance of liquid. At temperatures <br />down to 20 degrees salt will develop its own brine and <br />effectively penetrate the ice. From 20 degrees on down the <br />effectiveness of salt is drastically reduced and below <br />5 degrees it will merely lay there. <br />A liquid calcium chloride system affords salt the needed <br />tool to effectively attack ice. This system is designed <br />to deliver bare pavement driving as well as reduce the <br />amount of salt previously required. The effective melt- <br />ing range of this chemical is more than 50 degrees lower <br />than straight salt. The savings will result in being <br />able to use less salt per application as well as reducing <br />the frequency of application per storm. By reducing the <br />amount of salt applied also reduces the enviromental <br />problem. <br />The system I am requesting consists of a 12,000 gallon <br />fibre glass storage tank with stainless steel pump, a <br />liquid spray bath with metering devise to accompany the <br />various size trucks and the two (2) hopper trucks equip- <br />ped with there own solution applicator system. The total <br />