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John Kittleson concluded the presentation by stating a 10% reduction in carbon <br />monoxide, carbon dioxide and nitrogen dioxide has been identified. Greenhouse <br />emissions have been reduced. There has been a reduced reliance on imported oil <br />and an increase in pavement life expectancy. <br />Member Vanderwall asked what percentage will reliance on oil go down when <br />switching from hot mix to warm mix. John Kittleson answered the energy <br />savings has been 10 to 15%. Member Vanderwall asked if that can be measured <br />in their business. Kent Peterson answered yes it is directed related to the amount <br />of fuel that is used. <br />A video from Bituminous Roadways was shown to review the facts that were just <br />presented about the new warm mix process of producing asphalt. <br />Member DeBenedet mentioned he took a tour of one of Bituminous Roadway's <br />plants but not much was going on at that time. <br />Member Vanderwall asked where the concept of warm mix originated. Ken <br />Peterson and John Kittleson explained this came from a company in Europe. <br />Bituminous Roadways is the only company in Minnesota that is using this <br />technology. Member Vanderwall asked for some documentation from a plant that <br />has been using this technology already. John Kittleson stated the energy saving <br />information he stated earlier. Member Vanderwall explained what he is looking <br />for is documentation showing the specific numbers of energy savings of a warm <br />mix plant versus a hot mix plant. <br />Member DeBenedet reminded the commission what the Council asked them to do <br />was to review the outside storage of the plant and that there is a time line of 60 <br />days which is up in July. <br />Member DeBenedet asked what percentage of asphalt will be brought in by rail <br />versus truck Kent Peterson answered right now 100% would be brought in by <br />truck but they anticipate this would change to 25 % coming in by rail. Member <br />DeBenedet explained he is asking this because of the issue of whether Walnut <br />Street is able to handle the truck traffic. Member DeBenedet asked what <br />percentage of aggregate would come in by rail. Kent Peterson answered it would <br />be about 25% as well. Member DeBenedet asked how much recycled asphalt <br />would come in by truck Kent Peterson answered 100% would come in by truck. <br />Member DeBenedet asked how dust would be controlled. Kent Peterson <br />answered this is controlled with the use of water by contractors they use. Member <br />DeBenedet asked about a comment made in the video about being able to double <br />the surface covered using warm mix instead of hot mix. Kent Peterson explained <br />the warm mix increases the amount of time they are able work with the material <br />so they are able to haul it further distances. <br />Member DeBenedet mentioned his concern about the on site liquid asphalt <br />storage and containment systems. Kent Peterson explained they have a <br />Page 4 of 7 <br />