Cirus Salt System controls.
Over the 2011/12 winter season, the City had snowfall of 23.9 inches and used 6,571 tons of road salt to keep roads clear; this past season (as of February 24) the City has had 72.9 inches of snow and used 9,605 tons of salt. On a tons per inch basis, the drop in usage is significant and has resulted in a savings of $994,842 over the last three seasons.
These dramatic savings have been made possible through the acquisition of new vehicles and the installation of electronic salt control systems that monitor road temperature and other factors and adjust the spread rate accordingly. It also reduces the amount of salt spread when a truck slows down or shuts off the spreader completely when a truck comes to a stop, eliminating uneven distribution and over salting. In total, 24 trucks have been equipped with this system, each at a cost of about $8,300 per truck for a total investment of about $200,000. These purchases were part of the City’s capital plan.
Based on the cost of salt of $50.88 per ton, this investment has resulted in a five-fold savings of $1 million. In FY 13 the City saved $463,692; so far in FY 14, another $531,150 compared to FY 12. More savings are expected as additional vehicles are outfitted over the next few years.
Plow/salter clearing snow February 13.
Over the last three seasons, salt usage dropped by 46% when measured in tons per inch of snow. This drop is especially significant given the tripling of snowfall during the same period. This year, salt usage per inch of snow is down another 11%.
The following summarizes year-to-year numbers:
FY 12: 6,571.3 tons of salt; 23.9 inches of snow; 275 tons per inch
FY 13: 10,713.1 tons of salt; 72.1 inches of snow; 148.6 tons per inch
FY 14: 9,605.55 tons of salt; 72.9 inches of snow; 131.8 tons per inch (as of 2/24/14)
“Our capital plan is clearly paying dividends,” said City Manager Bernie Lynch. “With the City Council’s support, we’ve been able to continue to replace our aging public works fleet and to include the latest technology for monitoring winter storm conditions and salt distribution. Our return on this investment is dramatic and has the added benefit of reducing the amount of salt runoff into rivers, streams and residents’ yards.”
Read Full Post »