1. Recycling Tear Off Shingles in Bituminous Pavement Ramsey County 2007 Lower Afton Road Trail Project By Jerry Auge, Jr. – Project Manager 651-266-7117 jerry.auge@co.ramsey.mn.us

2. 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

3. Bituminous Pavement Design Partially State Aid Funded 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

4. 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) –Suppliers written certification that the shingles are in compliance –County to approve recycling plans for: Where to source the tear-off shingles supplies How debris will be sorted out from shingles Grinding, screening and storage

5. LAT Project RAS Spec (continued) –County and Mn/DOT staff shall inspect recycling operations –Samples of final RAS product shall be provided to County and Mn/DOT

6. 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

15. Omann’s Grinding Process: Phases II and III Removed remaining nails Removed all metallic material Ground shingles to a very fine consistency 7/16 – inch minus Provided very clean product to Midwest Asphalt

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

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

24. Recycling Tear Off Shingles in Bituminous Pavement Ramsey County 200 7 Lower Afton Road Trail Project By Jerry Auge, Jr. – Project Manager 651-266-7117 jerry.auge@co.ramsey.mn.us