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ix A C K N O W L E D G M E N T S The research reported herein was performed under NCHRP Project 25-44 by RSG with Bowlby & Associates, Inc., Environmental Acoustics (a Division of Gannett Fleming, Inc.), ATS Consulting, and, Sanchez Industrial Design, Inc. William Bowlby, Ph.D., P.E., of Bowlby & Associates (B&A) served as the Technical Lead for the project and Kenneth Kaliski, P.E., INCE Bd. Cert. of RSG served as overall project manager under RSG. The lead authors of this Final Report are Dr. Bowlby of B&A, Mr. Kaliski of RSG, Judy Rochat, Ph. D., of ATS Consulting, Karl Washburn, INCE Bd. Cert. of RSG, and Rennie Williamson of B&A. Dr. Bowlby was the lead author of the Task 1 Amplified Work Plan. Douglas Barrett of Sanchez Industrial Design (SID) (now with Cross-Spectrum Acoustics, Inc.) was the lead author of the Task 2 Technical Memorandum No. 1: Review of Available Literature on Reflected Noise from Single Noise Barriers. The psychoacoustics appendix (Appendix D) was written by David- Michael Lozupone and Karl Washburn of RSG as part of Task 4. Dr. Darlene Reiter, Ph. D., P.E., of B&A and Dr. Bowlby were the lead authors of the Task 3 Technical Memorandum No. 2: Study Location Selection Criteria, Recommended Study Locations, and Data Collection, Processing and Analysis Protocols. The Task 4 noise measurements along I-24 and Briley Parkway in Tennessee were performed by Dr. Bowlby, Gonzalo Sanchez of Sanchez Industrial Design (SID), Clay Patton, Geoff Pratt, P.E., and Rennie Williamson of B&A, and Ahmed El-Aassar, Ph.D., P.E., of Environmental Acoustics (EA). The noise measurements in Task 5 were performed by the following: ⢠I-90, Illinois: Staff of SID, including Mr. Sanchez, Mr. Barrett, Paul Schick, Ryan Cranfill, and Lisa Sanchez ⢠SR-71, California; Dr. Rochat, Shannon McKenna and Tony Evans of ATS Consulting, Mr. Sanchez of SID, and Mr. Patton of B&A ⢠MD-5, Maryland: Adam Alexander, Sonnie Peterson, Anjoli Martin, Dr. John MacDonald of Environmental Acoustics (EA), Mr. Sanchez of SID, and Mr. Patton of B&A Data reduction, processing, analysis, and quality control were performed by: Mr. Sanchez, and Paul Schick of SID; Dr. Bowlby, Mr. Williamson, Mr. Pratt, and Mr. Patton of B&A; Dr. Rochat, Dr. Hugh Saurenman, Chris Ono, Jack Meighan, and Jackie Chavez of ATS; Mr. Kaliski, Mr. Washburn, and Isaac Old of RSG; and Dr. El-Aassar, Harvey Knauer, P.E., Mr. Alexander, Ms. Peterson, Ms. Martin, and Dr. MacDonald of EA. The research team acknowledges the valuable input and direction from the projectâs technical advisory panel.
