Protecting the World’s Largest Geyser Ecosystem with Recycled Tires

October 17, 2017

October 17, 2017


Among the uses for recycled tires is pavement. Today’s NERC Blog article by Lauren Davis, Public Relations Coordinator at Michelin, talks about a recent project using recycled tires at Yellowstone National Park.


Yellowstone National Park has completed the second phase of its initiative to install more eco-friendly walkways in the world’s largest concentration of geysers and thermal features. With help from the Michelin Corporate Foundation, Yellowstone National Park has so far paved 11,100 square feet of pathway with the recycled material, replacing crumbling asphalt paths.


The new walkways are made from an innovative eco-friendly paving material that is manufactured in part from recycled tires. This new material will help reduce run-off and erosion in the eco-sensitive Yellowstone Geyser Basin, which features the iconic Old Faithful geyser and attracts millions of visitors a year.


The recycled tire pavement is called KBI Flexi®-Pave. This product provides a porous, durable and flexible surface that allows the water from rain and snow to percolate through the walkway the way it would have done before the walkways were installed. This in turn creates more natural water patterns that eventually replenish the geyser basin. Unlike asphalt, this paving material does not create significant storm-water runoff or leach pollutants into the soil. It also does not break apart, which prevents material from ending up in geysers and hot springs.


Some 2,400 tires were donated for the project, with this second phase using 1,536 end-of-life tires to help create thousands of square feet of paths. Most of these tires were originally donated several years ago by Michelin for use on Yellowstone’s more than 800 fleet vehicles and commercial equipment. A total of $1.5 million in donations and in-kind have been used thus far for the project. Around 1,500 volunteer hours have been logged on the pathway project.


Flexi-Pave not only provides an environmentally friendly solution for the Old Faithful area, it prevents thousands of old tires from ending up in a landfill or being burned for fuel. The project was made possible through a partnership between Yellowstone National Park, park concessioners, the Yellowstone Park Foundation, KBI Industries and the Michelin Corporate Foundation.


“The Yellowstone Walkways Project aligns with Michelin’s commitment to being a global leader in sustainable mobility,” said Leesa Owens, director of community relations for Michelin North America. “Our employees have been involved with this project from the start, working directly to help create environmentally friendly walkways out of Michelin tires that had already provided Yellowstone with years of cost-effective and fuel-efficient operations.”


Flexi-Pave is made of rubber granules and stone held together by a polymer binding agent that is inert when cured. Its open-pore design enables fast evacuation of up to 4,000 cubic inches of water per hour. Beyond Yellowstone, this innovative product has a broad range of applications. The thousands of rubber granules making up its surface make it non-slip and it is an ADA-compliant surface accessible to wheelchairs and walkers. The integrity of the materials are not affected by freeze-thaw conditions which is why it works well in cold and snowy parts of the Northeastern and Midwestern United States.


 “Yellowstone is the world's first national park with nearly 150 years of balancing the protection of natural wonders and sharing them with visitors,” said Lynn Chan, a landscape architect for the National Park Service and lead on sustainability at Yellowstone National Park. “It is important to us to rehabilitate the park’s walkways with materials that can help protect this sensitive environment yet still allow visitors to see and appreciate it.”


“This project represents the model for collaboration between public and private organizations. We hope that this eco-friendly park walkway will inspire other similar projects that help preserve natural systems,” said Jeff Augustin, vice president of external partnerships at Yellowstone Park Foundation.


By Lauren Davis, Public Relations Coordinator at Michelin


Dedicated to the improvement of sustainable mobility, Michelin designs, manufactures and sells tires for every type of vehicle, including airplanes, automobiles, bicycles, earthmovers, farm equipment, heavy-duty trucks and motorcycles. The company has earned a long-standing reputation for building innovative premium tires. In addition to tires, the company also publishes travel guides, hotel and restaurant guides, maps and road atlases. Headquartered in Greenville, S.C., Michelin North America employs about 22,700 and operates 19 major manufacturing plants.

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Northeast recycled commodity values hit 5-year lows

By Antoinette Smith | Resource Recycling • March 6, 2026
Fourth-quarter MRF commodity values in the Northeast reached five-year lows, as they continued to drop but at a decelerating pace, according to Northeast Recycling Council survey data released this week. The average value for all commodities fell to $68.41/ton without residuals, lower by 8.96% on the quarter. This level marks the lowest point since Q4 2020, when the grade hit $60.46. The report includes responses from 18 MRFs representing 12 states: Connecticut, Delaware, Maine, Maryland, Massachusetts, New Hampshire, New Jersey, New York, Pennsylvania, Rhode Island, Vermont and Virginia. With residuals, average values were at $52.49/ton with residuals, lower by 12.75% – the lowest point since Q3 2020, when the grade reached $40.19. The report also detailed the change in Q4 average values, with For PET, PP and mixed plastics (#3-7), as well as steel cans, the rate of decrease slowed in the quarter, while OCC, aluminum cans and mixed paper continued falling at the same pace as the previous quarter. Average pricing for both natural and color HDPE bales, brown glass containers and all other paper rose in Q4. However, clear glass, green glass and 3-mix glass containers, along with bulky rigids, fell during the period, after rising in Q3. The report points out that recovered glass often is marketed but at a negative value, meaning recipients are paid to take it away. Single stream decreased by 7.87% without residuals and by 9.82% with residuals, while dual stream/source separated materials fell by 10.57% without residuals, and by 18.98% with residuals. Although dual-stream MRFs did not decelerate as much as their single-stream counterparts, they did see a higher average commodity price compared to single stream for both with and without residuals. Residual material cannot be sold and is landfilled. The report also showed the 2024 share of each material at 18 MRFs, with OCC and mixed paper representing nearly one half of incoming volumes. Of the included states, five have deposit return systems for beverage containers, which results in fewer glass bottles, PET bottles and aluminum cans winding up in MRFs there. In addition, MRFs in those states typically generate less revenue from those recyclables, the report said. The report also showed the 2024 share of each material at 18 MRFs, with OCC and mixed paper representing nearly one half of incoming volumes. Of the included states, five have deposit return systems for beverage containers, which results in fewer glass bottles, PET bottles and aluminum cans winding up in MRFs there. In addition, MRFs in those states typically generate less revenue from those recyclables, the report said. Of the three approaches reflected in the report – single stream, dual stream and source separation – single stream is the most common. Read the article on Resource Recycling's website.

Northeast recycled commodity values hit 5-year lows

March 6, 2026
Northeast recycled commodity values hit 5-year lows Fourth-quarter MRF commodity values in the Northeast reached five-year lows, as they continued to drop but at a decelerating pace, according to Northeast Recycling Council survey data released this week. The average value for all commodities fell to $68.41/ton without residuals, lower by 8.96% on the quarter. This level marks the lowest point since Q4 2020, when the grade hit $60.46. The report includes responses from 18 MRFs representing 12 states: Connecticut, Delaware, Maine, Maryland, Massachusetts, New Hampshire, New Jersey, New York, Pennsylvania, Rhode Island, Vermont and Virginia. With residuals, average values were at $52.49/ton with residuals, lower by 12.75% – the lowest point since Q3 2020, when the grade reached $40.19. The report also detailed the change in Q4 average values, with For PET, PP and mixed plastics (#3-7), as well as steel cans, the rate of decrease slowed in the quarter, while OCC, aluminum cans and mixed paper continued falling at the same pace as the previous quarter. Average pricing for both natural and color HDPE bales, brown glass containers and all other paper rose in Q4. However, clear glass, green glass and 3-mix glass containers, along with bulky rigids, fell during the period, after rising in Q3. The report points out that recovered glass often is marketed but at a negative value, meaning recipients are paid to take it away. Single stream decreased by 7.87% without residuals and by 9.82% with residuals, while dual stream/source separated materials fell by 10.57% without residuals, and by 18.98% with residuals. Although dual-stream MRFs did not decelerate as much as their single-stream counterparts, they did see a higher average commodity price compared to single stream for both with and without residuals. Residual material cannot be sold and is landfilled. The report also showed the 2024 share of each material at 18 MRFs, with OCC and mixed paper representing nearly one half of incoming volumes. Of the included states, five have deposit return systems for beverage containers, which results in fewer glass bottles, PET bottles and aluminum cans winding up in MRFs there. In addition, MRFs in those states typically generate less revenue from those recyclables, the report said. The report also showed the 2024 share of each material at 18 MRFs, with OCC and mixed paper representing nearly one half of incoming volumes. Of the included states, five have deposit return systems for beverage containers, which results in fewer glass bottles, PET bottles and aluminum cans winding up in MRFs there. In addition, MRFs in those states typically generate less revenue from those recyclables, the report said. Of the three approaches reflected in the report – single stream, dual stream and source separation – single stream is the most common. Read report on CRA's website.

Q4 2025 Northeast U.S. Commodity Values Decelerate in Decline and HDPE Sees Slight Increase

By Megan Fontes • March 5, 2026
NERC’s Material Recovery Facilities (MRF) Commodity Values Survey Report for the period October - December 2025 showed a deceleration in the continued decline in the average commodity prices. The average value of all commodities decreased by 8.96% without residuals to $68.41 and by 12.75% with residuals to $52.49 as compared to last quarter. Single stream decreased by 7.87% without residuals and 9.82% with residuals, while dual stream / source separated decreased by 10.57% without residuals and 18.98% with residuals compared to last quarter. Dual stream MRFs did not decelerate as much as single stream MRFs but did see a higher average commodity price compared to single stream for both with and without residuals. The decrease seen in Steel cans, PET, Polypropylene, and Mixed plastics (#3-7) slowed as compared to last quarter, while the decrease remained consistent in OCC, Aluminum cans, Mixed paper, and Residue. Notably, average values for Natural HDPE, Colored HDPE, All other paper, and Brown glass containers reversed direction from last quarter (where they dropped in value) and saw an increase in value this quarter as compared to last quarter. Clear glass, Green glass, and 3-Mix glass containers, as well as Bulky rigids, reversed direction from last quarter (where they increased in value) and saw a decrease in value this quarter as compared to last quarter.