Hubbard County continues chloride, DuraBlend road treatment
Hubbard County Public Works Coordinator Jed Nordin said the county highway department doesn’t plan to switch products.
Hubbard County Public Works Coordinator Jed Nordin reviewed the county’s efforts to minimize dust.
The county board approved the final payment of $53,013 to Envirotech Services, Inc. for the county’s supply of liquid calcium chloride and DuraBlend, a relatively new product by the Greeley, Colo. company.
The total bill was $825,456. Nordin listed the financial breakdown: county maintenance funds covered $512,002, while township funds paid the remainder of $313,454.
“You can see that the program is getting quite large,” Nordin said. “We’re getting excellent participation from the townships. I think they’re seeing the advantages of the calcium chloride, even though there are disadvantages that go along with it. All in all, it’s a good product and it really helps us keep the maintenance costs down and save on some of our resources, as far as re-graveling and whatnot.”
Last year, Envirotech Services asked the county to test a variety of its products through one freeze and thaw. “Some that were similar to base stabilizers that we’ve used in the past,” Nordin said.
Test strip results were varied and interesting, he said, but some of the products are “very expensive” – as much as $20,000 per mile. Some outright failed. Envirotech Services reapplied calcium chloride where a product was unsuccessful.
“We’re trying different things,” he continued. “We want less chlorides, if it’s going to be as effective.”
Nordin said the Hubbard County Highway Department doesn’t plan to switch products.
“What we’re seeing right now is the DuraBlend is going to be our go-to,” he explained. “We’ll continue to increase our percentage of use of DuraBlend. That is the product that leaches a bit less, but it is a 20% higher cost. It stays on the road for a significantly longer period of time.”
According to Envirotech Services, DuraBlend is a polymer blend that bonds to clay particles in the aggregate/gravel, thereby “lowering migration of chloride from the road to improve friction in moisture situations and provide for safer driving surfaces.” The company says DuraBlend reduces leaching by 50% compared to traditional products.
Nordin said a number of townships will switch to DuraBlend this year.
In related business, the board did as follows:
- Approved the final payment of $27,067 to Wm. D. Scepaniak for aggregate surfacing and stockpile. The total cost was $656,306. County transit sales tax paid $484,367; county maintenance funds contributed $47,269; Crow Wing Lake Township $71,864 and Henrietta Township $52,805.
- Approved the low quote of $7,912 from Samuelson Laney Plumbing Heating Cooling, Inc. of Park Rapids for HVAC work at the south transfer station.