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61 ACKNOWLEDGMENTS This study was performed under the overall guidance of the NCHRP Project Committee SP 20-6. The Committee is chaired by MICHAEL E. TARDIF, Friemund, Jackson and Tardif, LLC. Members are RICHARD A. CHRISTOPHER, HDR Engineering; JOANN GEORGALLIS, California Department of Transportation; WILLIAM E. JAMES, Tennessee Attorney Generalâs Office; PAMELA S. LESLIE, Miami-Dade Expressway Authority; THOMAS G. REEVES, Consultant, Maine; MARCELLE SATTIEWHITE JONES, Jacob, Carter and Burgess, Inc.; ROBERT J. SHEA, Pennsylvania Department of Transportation; JAY L. SMITH, Missouri Department of Transportation; JOHN W. STRAHAN, Consultant, Kansas; and THOMAS VIALL, Attorney, Vermont. JANET MYERS provided liaison with the Federal Highway Administration, and CRAWFORD F. JENCKS represents the NCHRP staff.
These digests are issued in order to increase awareness of research results emanating from projects in the Cooperative Research Programs (CRP). Persons wanting to pursue the project subject matter in greater depth should contact the CRP Staff, Transportation Research Board of the National Academies, 500 Fifth Street, NW, Washington, DC 20001. Subscriber Categories: Construction ⢠Law ⢠Maintenance and Preservation ⢠Materials ISBN 978-0-309-28335-9 Transportation Research Board 500 Fifth Street, NW Washington, DC 20001 LRD 61 rev2.indd 4 7/2/13 12:04 PM NON-PROFIT ORG. U.S. POSTAGE PAID WASHINGTON, D.C. PERMIT NO. 8970