Year
Index
Year
Index
1972
141.94
1999
460.16
1973
149.36
2000
468.05
1974
170.45
2001
472.18
1975
190.49
2002
486.16
1976
202.61
2003
497.40
1977
215.84
2004
563.78
1978
235.78
2005
605.47
1979
257.20
2006
645.52
1980
277.60
2007
681.88
1981
302.25
2008
741.36
1982
320.13
2009
699.70
1983
330.82
2010
720.80
1984
341.06
2011
758.79
1985
346.12
2012
769.30
1986
347.33
2013
776.44
1987
353.35
2014
791.59
1988
369.45
2015
786.32
1989
383.14
2016
782.46
1990
386.75
2017
807.94
1991
392.23
2018
827.52
1992
399.07
2019
844.07
1993
410.63
2020
860.96
1994
424.91
*
US ACE, Yearly Average Cost Index for Utilities. In: Civil Works Construction Cost Index System
Manual, 1110-2-1304, US Army Corps of Engineers, Washington, DC. Amendment #1
30 September 2017. DF file is available on the Internet at http://www.publications.usace.army.
mil/Portals/76/Publications/EngineerManuals/EM_1110-2-1304.pdf?ver¼2017-11-17-073237627 (2018).
Acknowledgment and Dedication This book chapter is one of many book chapters
and technical papers published in memory of our co-author, Dr. Donald
B. Aulenbach, who worked closely with Professors Lawrence K. Wang, Mu-Hao
Sung Wang, Nazih K. Shammas, William A. Selke, Milos Krofta, and Daniel Guss
from 1981 to 2019 for developing an environmental humanitarian engineering
program at the Lenox Institute of Water Technology (LIWT), teaching/researching
there as an adjunct professor for almost two decades, and publishing many research
papers and textbooks for academic contribution to the humanity. The senior author,
Dr. Lawrence K. Wang, was also a colleague with Drs. Donald B. Aulenbach,
Lenore S. Clesceri, and Nicholas L. Clesceri at Rensselaer Polytechnic Institute
(RPI), Troy, NY, USA, in 1973–1978, where/when the happy RPI faculty team
conducted so many lake investigations together. Dr. Aulenbach’s lifetime accomplishments at both LIWT and RPI are duly acknowledged. The following is a Warm
Tribute from RPI faculty representatives:
316
L. K. Wang et al.
Index
Year
Index
1972
141.94
1999
460.16
1973
149.36
2000
468.05
1974
170.45
2001
472.18
1975
190.49
2002
486.16
1976
202.61
2003
497.40
1977
215.84
2004
563.78
1978
235.78
2005
605.47
1979
257.20
2006
645.52
1980
277.60
2007
681.88
1981
302.25
2008
741.36
1982
320.13
2009
699.70
1983
330.82
2010
720.80
1984
341.06
2011
758.79
1985
346.12
2012
769.30
1986
347.33
2013
776.44
1987
353.35
2014
791.59
1988
369.45
2015
786.32
1989
383.14
2016
782.46
1990
386.75
2017
807.94
1991
392.23
2018
827.52
1992
399.07
2019
844.07
1993
410.63
2020
860.96
1994
424.91
*
US ACE, Yearly Average Cost Index for Utilities. In: Civil Works Construction Cost Index System
Manual, 1110-2-1304, US Army Corps of Engineers, Washington, DC. Amendment #1
30 September 2017. DF file is available on the Internet at http://www.publications.usace.army.
mil/Portals/76/Publications/EngineerManuals/EM_1110-2-1304.pdf?ver¼2017-11-17-073237627 (2018).
Acknowledgment and Dedication This book chapter is one of many book chapters
and technical papers published in memory of our co-author, Dr. Donald
B. Aulenbach, who worked closely with Professors Lawrence K. Wang, Mu-Hao
Sung Wang, Nazih K. Shammas, William A. Selke, Milos Krofta, and Daniel Guss
from 1981 to 2019 for developing an environmental humanitarian engineering
program at the Lenox Institute of Water Technology (LIWT), teaching/researching
there as an adjunct professor for almost two decades, and publishing many research
papers and textbooks for academic contribution to the humanity. The senior author,
Dr. Lawrence K. Wang, was also a colleague with Drs. Donald B. Aulenbach,
Lenore S. Clesceri, and Nicholas L. Clesceri at Rensselaer Polytechnic Institute
(RPI), Troy, NY, USA, in 1973–1978, where/when the happy RPI faculty team
conducted so many lake investigations together. Dr. Aulenbach’s lifetime accomplishments at both LIWT and RPI are duly acknowledged. The following is a Warm
Tribute from RPI faculty representatives:
316
L. K. Wang et al.