Figure 1 — Asphalt Rubber Binder Prices (ADOT) 1985-1998.

Figure 2 — Maintenance Cost, Dollars per Lane Mile, Conventional and A-R.

Figure 3 — Comparison photograph, conventional and A-R materials, US I-40.

Figure 4 — Asphalt Rubber Blending Unit.

Figure 5 — Median Crumb Rubber Prices in SW US.

Figure 6 — Annual Tonnage Asphalt Rubber Hot Mix 1994-1998

Figure 7 — Filbin/Oxford Tire Fire, California, USA, September 1999.

Table 1 — Caltrans Design Guide for ARHM Gap Graded, structural equivalencies.

Table 2— Projected Savings through A-R Paving Strategies, Life Cycle Cost Analysis.

Table 3 — Emission Measurements Conventional and A-R Paving Materials.

Table 4 — Crumb Rubber Gradations for A-R, Arizona, California, and Florida.

Table 5 — Crumb Rubber Price Range 1995-1999, 10 & 20 Mesh.

Table 6 —Scrap Tire Uses in Arizona.

Table 7 — Scrap Tire Uses in California.

Table 8 — Scrap Tire Uses in Florida.

Table 9 — Sound Absorption Spray Preliminary Test Results.

7.0 References

Anderton, G.L., Summary of Research on Asphalt-Rubber Binders and Mixes, Volume 1, Army Corps of Engineers Waterways Experiment Station, Construction Productivity Advancement Research, Asphalt Rubber Producers Group, May 1992.

Crockford, W.W., Makunike, D., Davison, R.R., Scullion, T. and Billiter, T.C., Recycling Crumb Rubber Modified Asphalt Pavements. Report FHWA/TX-95/1333-1F. Texas Transportation Institute, May 1995.

Epps, J.A., Galloway, B.M. First Asphalt-Rubber User-Producer Workshop Proceedings Summary. May 1980.

Gaines, L.L. & Wolsky, A.M. Discarded Tires: Energy Conservation Through Alternative Uses, Energy & Environmental Systems Division, United States Department of Energy

December, 1979

Gardner, T.M., Cole, K. State of California Integrated Waste Management Board Tire Program Evaluation, Vitetta Group, February 1999.

Gunkel, Kathryn O’C P.E. Evaluation of Exhaust Gas Emissions and Worker Exposure from Asphalt Rubber Binders in Hot Mix Asphalt, Wildwood Environmental Engineering Consultants, Inc., Michigan Department of Transportation, March 1994.

Hanson, D.I., Epps, J.A., Hicks, R.G., Construction Guidelines for Crumb Rubber Modified Hot Mix Asphalt National Center for Asphalt Technology, FHWA, August 1996

Hanson, D.I., Foo, K. Evaluation and Characterization of a Rubber Modified Hot Mix Asphalt Pavement, National Center for Asphalt Technology, April 1994.

Heitzman, M.A., State of the Practice — Design and Construction of Asphalt Paving Materials With Crumb Rubber Modifier, Report FHWA A-SA-92-022. FHWA, May, 1992.

Hicks, R.G., J.R. Lundy, R.B. Leahy, D. Hanson, and Jon Epps. Crumb Rubber Modifiers (CRM) in Asphalt Pavements: Summary of Practices in Arizona, California and Florida. Report FHWA-SA-95-056. FHWA, September, 1995.

Hicks, R.G., J.R. Lundy, and Jon Epps Life Cycle Costs for Asphalt-Rubber Paving Materials. June 1999.

Huffman, J.E., Sahuaro Concept of Asphalt-Rubber Binders, Presentation at the First Asphalt Rubber User Producer Workshop, Scottsdale Arizona, May 1980.

Recycling Research Institute, The Scrap Tire & Rubber Users Directory, 1999 Edition.

Roberts, F.L., Kahndal, P.K., Brown, E.R., Lee, D., Kennedy, T.W. Hot Mix Asphalt Materials, Mixture Design, and Construction, Second Edition, National Asphalt Pavement Association Education Foundation, 1996.

Scofield, L.A. The History Development and Performance of Asphalt Rubber at ADOT. Report AZ-SP-8902. Arizona Transportation Research Center, Arizona Department of Transportation, December, 1989.

Way, G.B. Flagstaff I-40 Asphalt Rubber Overlay Project, Nine Years of Success Arizona Department of Transportation. Paper Presented to the Transportation Research Board, 78^th Annual Meeting, August 1999.

Winters, R.E., The Conception and Development of Asphalt Rubber, Presentation to the National Seminar on Asphalt Rubber, Kansas City Missouri, October 1989.

Youssef, Z., Hovasapian, P.K., Olympic Boulevard Asphalt Rubber Recycling Project, City of Los Angeles Department of Public Works, February, 1995.

Zhu, H., Carlson, D. A Spray Based Crumb Rubber Technology in Highway Noise Reduction Application, Article submitted to Journal of Solid Waste Management, October 1999.