1. Public Works Greg Chock Operations Manager 763-745-7550 greg.chock@hennepin.mn.us Harlan Hanson Road & Bridge Engineer 763-745-7705 harlan.hanson@co.hennepin.mn.us Joe Hannan Paving Crew Foreman 763-745-7707 joseph.hannan@co.hennepin.mn.us Steve Peterson Technical Coordinator 763-745-7553 steve.m.peterson@co.hennepin.mn.us Recycled Asphalt Shingles

2. History of using recycled Asphalt Shingles for hot mix asphalt MNDOT testing showed that shingle scrap produces a hot mix of equal or better quality, while also offering potential cost savings. MNDOT has experimented with the use of shingle scrap in hot mix asphalt since 1990. Hennepin County test section 1.CSAH 17, France Avenue, Bloomington, MN

3. France Ave Recycled Shingle Project Location: 550’ south of west 90 th street to west 80 th street in Bloomington. Northbound lane was paved with 5% shingle mix. Southbound lane was paved without shingle mix. June 2002

4. Characteristics of France Avenue shingle project. 1.25,000 ADT 2.Originally constructed in 1963 3.Reconstructed in 1987. 4.Shingle mix overlay in 2002.

5. 5 Hennepin County Mill & Overlay Project: France Avenue: Between 80 th & 90 th Streets Surface cracking on old bituminous pavement required mill & overlay repair

6. 6 Used 75 tons of shingles that would have otherwise been land filled.

7. 7 Crews report “Traffic can use surface more quickly than normal mixes”

8. 8 Hennepin County France Ave. 80 th St. to 90 th St. Specified PG 58-28 Extraction Results: SB 30% RAP, no Shingles: PG 67.6-27.0 PG 68.1-27.9 NB 25% RAP, 5% Shingles: PG 66.5-27.9 PG 67.6-28.4

9. Increase the use of shingle-derived asphalt in county projects. Include shingle derived asphalt material as an alternative bid item in our annual bituminous contract.