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Making Greenways Greener: Developing a Sustainable Trail in Ramsey County

Making Greenways Greener: Developing a Sustainable Trail in Ramsey County. Ramsey County 2007 Lower Afton Road Trail Project By Commissioner Victoria Reinhardt and Bridget Beck. Deciding to Build a Green Trail Policy Background. Citizens want a trail for Bike and Ped Safety

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Making Greenways Greener: Developing a Sustainable Trail in Ramsey County

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  1. Making Greenways Greener: Developing a Sustainable Trail in Ramsey County Ramsey County 2007 Lower Afton Road Trail Project By Commissioner Victoria Reinhardt and Bridget Beck

  2. Deciding to Build a Green TrailPolicy Background Citizens want a trail for Bike and Ped Safety Parks and Corrections own the land Segment is short and is a vital connection for the East Metro trail system.

  3. Waste Shingles as a Resource Shingles are 15.2% of Construction and Demolition Waste (2006) 300,000 Tons of Roofing Waste per Year 20% of Demolition Landfill Space. (2004) 91% of Residential Roofing Waste is Asphalt Shingles

  4. Collaboration for Results Recognizing the role that everyone plays Public health has the material Public Works has a potential market Parks has a project to help demonstrate the use of post consumer tear off shingles.

  5. Project Overview • Project Consisted of Utilizing Recycled Products • Tear Off Shingles in Bituminous Mix • Recycled Plastics in Retaining Wall • Recycled Plastic/Rubber Pavers • Class 7 Aggregate (“gravel”) base • Reuse of sand in Rain Gardens • Benches have recycled plastics • Utilizing natural soil erosion material • HDPE Pipe • Natural Products

  6. Bituminous Pavement Design • Project was State Aid approved • Mn/DOT Engineered HMA Spec. • Early involvement of Mn/DOT • County required 5% tear off shingles! • Option to have RAP • Utilized type PG 58-28 virgin asphalt binder oil • Minimum of 70% virgin asphalt binder in mix

  7. LAT Project RAS Spec • Shingles shall be ½-inch minus • Free of nails, other metal, plastic, wood, glass, other debris (less than 0.5 percent) • County to approved plans for: • Where to source the tear-off shingles supplies • How debris will be sorted out from shingles

  8. LAT Project RAS Spec(continued) • Suppilers written certification that the shingles are in compliance • County and Mn/DOT staff shall inspect recycling operations • Samples of final RAS product shall be provided to County and Mn/DOT

  9. Source of Sorted Shingles • 75% sorted on site at the roofing job • J Zac, Inc. roofing company • Hauled by Veit • Minor contamination • 25% supplied from transfer station • Veit Industries • Minimal contamination

  10. Omann’s Grinding Process: Phase I • Ground to 8” minus • Removed 95% of nails • Removed most of the remaining contamination

  11. Omann’s Grinding Process: Phases II and III • Removed remaining nails • Removed all metallic material • Ground shingles to a very fine consistency7/16 – inch minus • Provided very clean product to Midwest Asphalt

  12. Bituminous Supplier & Installer:Midwest Asphalt • Utilized oil in shingles as partial replacement of virgin asphalt oil • Used recycled shingles at 5% in place of recycled asphalt pavement (RAP)

  13. Project Notes Normal request for bids Multiple bidders Supports MN/DOT tear-off research Technical feasibility not economic costs and benefits Savings on asphalt binder

  14. Concerns/Lessons Learned With Tear off Shingles • Warm weather • Wind • Ground Shingle stockpile - tacky • HMA – tacky

  15. Making Greenways Greener: Developing a Sustainable Trail in Ramsey County Presenters: Ramsey County Commissioner Victoria Reinhart – 651-266-8363 Bridget Beck – 651-266-7121

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