Keith Bargaheiser, National Manager for CCP Utilization, Headwaters Resources

Keith Bargaheiser  has spent 30 years in the cement and concrete industry working with specifiers, designers, contractors, ready mix producers, pre-cast, pre-stress industries, and consults on the repair and restoration of concrete. He chairs both  the Technical Committee and the Sustainability Committee of the American Coal Ash Association (ACAA) and is a board memeber of the ACAA Educational Foundation. he ison the board of the Canadian Industries Recycling Coal Ash. (CIRCA).  He is a member of thResearch, Engineering and Standards (RES) Committee and the {erformance Based Specifications P2P2 Committee of the National Ready Mix Concrete Association. (NRMCA)  He is teh Treasurer, Past President and Scholastic Scholarship Director of the Mid West Coal Association. (MCAA) and a ASTM/ACI Committee Member.  Keith  Received his BS and MS From Bowling Green State University, College of Technology/   He is currently the National Manager of CCP Utilization for Headwaters Resources; responsible for the promotion of CCP’s (Coal Combustion Products) in all 50 states and Canada.

Michael Blumenthal, Conference Chair

Michael Blumenthal was appointed Executive Director of the Rubber Manufacturers Association’s Scrap Tire Management Council in October 1990. In 2007 Michael was promoted to Vice President of the Rubber Manufacturers Association.  Since 1990 Michael has led the tire manufacturer’s efforts to expand the viable markets for scrap tires, this includes co-authoring three ASTM standards, one of which was for the use of tire shreds in civil engineering applications. Michael earned a Master of Business Administration from the City University of New York, a Master of Science from Michigan State and his Bachelor of Science from Purdue. 

John Dingeldein, P.E., Senior Principal/Vice President, Soil and Materials Engineers

John Dingeldein is VIce President and Senior Principal in Soil and Materials Engineers (SME), a midwest consulting engineering firm with eleven offices in Ohio, Indiana and Michigan. In 2011, SME joined forces with EDP Consultants, where John had been one of the principals for more than 20 years.  Mr. Dingeldein has extensive experience with designing many types of infrastructure projects using a variety of recycled and industrial materials in a projects for public and private sector clients in northeast Ohio.

Tuncer Edil, Ph.D., PE., D.GE Fellow, ASCE, Recycled Materials Resource Center 3G

Prof. Tuncer B. Edil has been an active researcher and educator for nearly 40 years at the University of Wisconsin-Madison. Prof. Edil is currently serving as Director of the new Recycled Materials Resource Center (RMRC-3G). He has undertaken several projects relating to highway construction and has been actively involved in use of a large variety of recycled materials, including scrap tires, foundry sands, coal combustion products, recycled pavement materials, recycled concrete aggregate, and recycled asphalt shingles.  Recently, he is involved in development of a quantitative rating system for sustainable highway construction named BE2ST in Highways. He has published over 350 papers in the fields of geotechnical, geoenvironmental, and pavement engineering.    He is appointed as founding Chair of newly formed ASTM Subcommittee D18.14 on Geotechnics of Sustainable Construction.  He is a member and Research Coordinator of TRB ADC60 Committee on Waste Management and Resource Efficiency.  Dr. Edil is a former Editor-in-Chief of the ASCE’s Journal of Geotechnical Engineering and current Editor-in-Chief of Geotechnical and Geological Engineering journal.  He is recipient of numerous personal and team/project awards from ASCE, ASTM, TRB, and other organizations.  He is holder of 2007 Special Science Award from the Scientific and Technological Research Council of Turkey.

Victor (Lee) Gallavan, PE, Recycled Materials Program Manager, FHWA

Mr. Gallivan has worked for the FHWA for 39 years in various field-engineering positions in five states and lastly the Office of Pavement Technology and now the Office of Asset Management, Pavement and Construction in Washington D.C. He is currently involved in Hot Mix Asphalt (HMA), Quality Control/Quality Assurance Programs, Recycled Materials including Reclaimed Asphalt, Shingles, and various recycled materials organizations.  Mr. Gallivan is also working with the National Highway Institute (NHI) on new and updated training materials for Quality Assurance and the use of reclaimed materials for various recycling applications. Mr. Gallivan has been also instrumental in the national advancement of new technologies for the Federal Highway Administration particularly on Intelligent Compaction Technology for Soils, Aggregate and HMA materials.

Dr. Dana N. Humphrey, Dean of Engineering, Professor of Civil Engineering, University of Maine

Dana N. Humphrey is Dean of Engineering at the University of Maine.  He joined the University of Maine in 1986 after receiving his Ph.D. in Civil Engineering from Purdue University.  Dr. Humphrey is a member of the boards for Educate Maine, Maine Discovery Museum, and Maine Space Grant Consortium.  He has served as Chair of the Department of Civil and Environmental Engineering, President of the UMaine Faculty Senate, Faculty Representative to the University of Maine System Board of Trustees, and President of the Maine Section ASCE. His research in using tire derived aggregate as lightweight fill, retaining wall backfill, thermal insulation, drainage layers for landfills, and vibration damping layers beneath rail lines has received international attention with projects in the U.S. from coast to coast as well as Canada and Australia.  Maine’s governor awarded him the 1997 Special Teamwork Award for his part in the tire derived aggregate fill constructed for the Portland Jetport Interchange.  Dr. Humphrey has received the Maine Distinguished Professor Award (1994), Carnegie Foundation Maine Professor of the Year (1994), Maine Civil Engineer of the Year (1998), Presidential Public Service Award (1998), and Maine Better Transportation Association Max J. Wilder Award (2006).

Cecil Jones, PE, FACI, President, Diversified Engineering Services; former Chair, AASHTO Recycling Task Force

Diversified Engineering Services provides quality management services to clients along with specification development, new technology development support, training and general consulting services.  Prior to establishing Diversified Engineering Services,  Mr. Jones worked with the North Carolina Department of Transportation over 30 years with assignments ranging from field construction engineering to the position of State Materials Engineer, where he was responsible for the overall management of the materials quality system for the Department’s 80,000 miles of state-maintained highway system.  He is an active member of The Transportation Research Board where he is a committee Chair and has served on numerous NCHRP research panels monitoring research efforts on a variety of materials related work in the transportation area.  He was actively involved in AASHTO activities including the Subcommittee on Materials Executive Committee where he was a Regional Vice Chair and led the Recycling Task Force.

Robert E. Lee, P.E., Flexible Pavements Branch, Texas DOT

Robert works for the Texas Dept. of Transportation as a Senior Materials Engineer in the Flexible Pavements Branch of the Construction Division.  He graduated with a Bachelors of Science Degree in Civil Engineering from Texas Tech University in 1986.  He earned his professional engineering license in Texas and has worked for TxDOT for 17 years and private industry for 8 years, all which have involved asphalt paving materials, testing, design and construction.  He currently provides technical support to TxDOT and the asphalt paving industry, is a liaison to the Texas Asphalt Pavement Association and is Project Director for research projects on RAP and Recycled Asphalt Shingles. He serves on ASTM E-17 committee (for Vehicle Pavement Systems) and the Steering Committee for the Texas Hot Mix Asphalt Center.

Mike Lenahan, President, Resource Recovery Corp. of West Michigan

Mike Lenahan is the President of Resource Recovery Corp. of West Michigan, a foundry-owned cooperative based in Coopersville, MI.  RRC was created by 15 west Michigan foundries more than two decades ago to find ways of reusing spent foundry sands and slags. To date, RRC has recycled more than a 1/2 billion tons of foundry residuals.  Mr. Lenahan's introduction to the foundry sand industry began as a sand salesman for a regional sand supplier, and then as the sand reuse specialist for Kurtz Bros., Inc.  Mike currently serves as President of the Foundry Association of Michigan and as the Chair of the Environmental Health & Safety Division of the American Foundry Society.  He is the current Chair of AFS-FIRST, Inc.

Dr. Rebecca S. McDaniel, Technical Director, North Central Superpave Center

Rebecca McDaniel is Technical Director of the North Central Superpave Center at Purdue University, a position she has held since 1995.  In that position, she is responsible for research into various aspects of asphalt materials, mixtures and pavements, including use of recycled materials, tire-pavement noise, friction and surface characteristics, and more.  McDaniel holds Bachelors, Masters and PhD degrees in Civil Engineering from Purdue University and a Bachelors degree in English from Indiana University.  She is a registered professional engineer in Indiana.  McDaniel is the president of the Association of Asphalt Paving Technologists and a vice-chair of ASTM Committee D04 on Road and Paving Materials.  She also chairs an expert task group for the Long Term Pavement Performance Program and is a member and past-chair of several Transportation Research Board Committees.

Kevin MacDonald, Principal Engineer, Beton Consulting Engineers

Kevin MacDonald is a Materials Engineer and consultant with specific expertise in production and performance of concrete.  He is a Licensed Professional Engineer in Minnesota and Ontario, Canada, and is a Fellow of the American Concrete Institute.  He is a member of ASTM Committee C01, C09 and C15, The American Society of Civil Engineers and Professional Engineers Ontario.  He is the current President of the Minnesota Chapter of the Institute and on the Steering Committee of Aggregate and Ready Mix of Minnesota, a local sponsoring group offering ACI Certification.

Dr. MacDonald is Co Chairman of Committee 130 B “Sustainability” and Vice-Chairman of ACI 306 “Cold Weather Concreting”, Secretary of ACI 132 “Responsibility in Concrete Construction” and a member of Committee 620 “Laboratory Technician Certification”, ACI 302 “Construction of Concrete Slabs on Ground”, and the Technical Activities Committee.  He has published a number of papers dealing with the durability of concrete and practical aspects of the production of High Performance Concrete using large quantities of recycled materials.   He is a recipient of the ASCE Charles Pankow Award for Innovation for work on high performance concretes with 98 percent reclaimed materials.

Steve Mueller, PE, Pavement and Materials Engineer, FHWA Lakewood Resource Center.

In his role as a Pavement and Materials Engineer for the Federal Highway Administration Resource Center in Lakewood, Colorado, Mr. Mueller is a member of a geographically dispersed team that is responsible for providing technology deployment and technical assistance for pavements and materials issues at the national level.  He served as a Co-Chair of the Environmental Stewardship Team for FHWA’s Pavement and Materials Program and as a member of FHWA’s Recycling Team. He is a recognized leader in the agency’s efforts to increase the use of recycled materials and industrial byproducts in roadway applications.  Steve is a licensed Professional Engineer in Colorado, a Past-President of the Colorado Society of Engineers, and a former Director of the Colorado Engineering Council. He is a member of ASCE.  In addition to his undergraduate engineering degree, he also holds a Master of Public Administration Degree from the University of Colorado.  

Elizabeth Olenbush, President, EO Associates, Inc. 

EO Associates is a WBE that provides sustainabilty training, environmental communications, strategic business planning and marketing services to public and private sector clients.  Ms. Olenbush founded EO Associates in 1994, following five years of service as the Director of Marketing for the Steel Recycling Institute.  Her work with the transportation sector began during her tenure as a contractor for the Wisconsin Recycling Market Development Board.  From 1999 to 2009, Ms. Olenbush served as Executive Director for Foundry Industry Recycling Starts Today, where she was one of the founding directors of the Industrial Resources Council.  She continues to provide project management services for the IRC and AFS-FIRST, in addition to Green Facilities Training through community colleges and workforce development programs in New England and the mid-Atlantic states. 

Jim Pappas, PE, Chair, AASHTO Subcomittee on Materials Recycling Task Force

Mr. Pappas is currently the Assistant Director of Design for Delaware DOT with responsibilities for Bridge Design, Bridge Management, Quality Control, Pavement Management, and Materials & Research. Jim began his career with DelDOT after his graduation from the University of Delaware with a Bachelor of Science in Civil Engineering. He has served many roles as a DelDOT Materials Engineer, COMTECH Engineer, and Chief Materials Engineer, working closely with construction personnel and designers on various transportation projects.  In 2009, Jim was honored by the Delaware Engineering Society as Engineer of the Year.  The AASHTO SOM Recycling Task Force was established in 2003 with a mission to investigate which recycled products can work in the highway environment and to support the development and implementation of standards that facilitate the use of recycled materials.

Dr. Monica Prezzi, Professor of Civil Engineering, Purdue University

Dr. Monica Prezzi is a Professor of Civil Engineering at Purdue University. She holds an undergraduate degree in civil engineering from the Federal University of Rio Grande do Sul (UFRGS), Brazil. She followed that with a period of work in the industry, during which she worked on several large construction projects, including power plants, metropolitan train stations and chemical plants. She then went back to graduate school. She obtained a Master of Engineering degree in geotechnical engineering from UFRGS in 1990, and both a Master of Science degree in geotechnical engineering and a Ph.D. in civil engineering materials/geotechnical engineering from Berkeley in 1995. After graduation, she stayed at Berkeley working as a Postdoctoral Fellow. This was followed by several years of work as a consultant on foundation engineering and foundation and structural repair. At Purdue, she teaches undergraduate and/or graduate courses in mechanics, foundation engineering and ground engineering. She is currently doing research on analysis and design of piles and micropiles, on the effect of soil disturbance on the performance of prefabricated vertical drains, and on utilization of recyclable materials in civil engineering structures.

Bill Thacker, Senior Research Engineer, National Council for Air and Stream Improvement

 NCASI is a non-profit technical organization that focuses on environmental topics of interest to the forest products industry.  Dr. Thacker's principal responsibilities at NCASI are to conduct research on environmental issues pertinent to the paper industry and provide requested information to paper companies on environmental matters. His research projects tend to address either the beneficial use of by-product solids or questions related to wastewater treatment and water quality. Prior to joining NCASI, he worked for 10 years in environmental positions at two paper companies.  Bill is a member of the Technical Association of the Pulp and Paper Industry (TAPPI). He has served on the Scientific Advisory Committee of the National Center for Clean Industrial and Treatment Technologies (CenCITT), a research consortium at Michigan Technological University. Bill received a B.S. degree in Paper Technology from Miami University of Ohio and M.S. and Ph.D. degrees in Environmental Engineering from the University of Illinois at Urbana-Champaign.

Ken Thornton, Chief, SEMP Section, Bureau of Maintenance, Pennsylvania DOT

Mr. Thornton has worked for PENNDOT for more than 20 years, and is currently supervisor of the SEMP Section, which is responsible for implementation of the Department's Strategic Recycling and Environmental Management Programs.  In this role, he also provides Waste Management/ Pollution Prevention technical assistance to the Department.  He is a professional geologist with over 20 years of service as a Geoscientist.  Mr. Thorton previously worked for the Pennsylvania Department of Environmental Resources in their Hazardous Site Cleanup Program, and as an Exploration Geologist for a major oil company in Texas and Oklahoma. 

Ron Walker, Chief, Materials Management Division, Indiana DOT

Ron Walker assumed his position as manager of InDOT's Office of Materials Management in 2005, where his principle duties include developing and recommending policies, procedures, standards, methods and techniques for testing materials and other contract specifications pertaining to highway construction.  Mr. Walker joined InDOT following his graduation from Purdue University in 1971, starting as an Assistant Field Control Engineer, followed by assignments as a Bituminous Engineer and a Quality Control Engineer.

Troy Woodruff, Chief of Staff & Deputy Commissioner, Indiana DOT

Mr. Woodruff assumed his current position as Chief of Staff for INDOT following his service as Deputy Commissioner of Operations, where he was responsible for leading all construction, maintenance and traffic operations including 3,200 employees and a $290 million annual operating budget.  He previously led field operations for one of INDOT's six regional districts.  Mr. Woodruff joined INDOT in 2009, following regional director positions with the Indiana Department of Environmental Management and Anthem Insurance.  He previously represented southwest Indiana as a member of the Indiana House of Representatives and a staff member of the office of Congressman John Hostettler.  He also served as the President and CEO of the Knox         County Chamber of Commerce.

Ali Zareh, P.E., Senior Pavement Design and Development Engineer, Arizona DOT

Ali Zareh began his career with Arizona DOT as an Engineer in Training in 1986, following his graduation from Montana State University.  He has over 27 years of experience with pavement design engineering and rehabilitation of PCCP and AC pavements utilizing AASHTO Design and Darwin ME design methods.  Mr. Zareh has been very involved with ADOT's Asphalt Rubber and Quiet Pavement Programs since their inception in 1988, leading to his current position in ADOT's Pavement Design Section, Materials Group.