HCES Officers - 2016-17


 Les J. Kempers


Les Kempers, P.E., is presently Vice President of Engineering, Marketing & Sales for GPRM Prestress located in Hawaii. He attended Iowa State University for his undergraduate work in Civil Engineering and University of Colorado Boulder for his graduate work in Structural Engineering. His professional affiliations and committees include; Chi Epsilon - Honorary engineering association for Civil Engineers, Iowa State University External Advisory Council for the College of Engineering, PCI Total Precast Committee, PCI National Marketing Committee, PCI Architectural Handbook Committee, PCI GFRC Committee (Glass Fiber Reinforced Concrete), PCI GFRC subcommittee, which published the Recommended Practice Publication and Quality Control Manual for the Production of GFRC, ASCE (American Society of Civil Engineers), SEAOH (Structrual Engineers Association of Hawaii), AIA - Hawaii Chapter, NAIOP (National Association of Industrial and Office Properties), and CSI (Construction Specifications Institute).  

 Stephanie Doan, P.E.

HCES Chair

Stephanie Doan, P.E.

Stephanie is a Civil Engineer/Structural Designer at WSP | Parsons Brinckerhoff.  She is a graduate of the University of Hawaii at Manoa with a Bachelor’s of Science Degree in Civil Engineering and a Master’s of Science Degree in Civil Engineering with a focus on Structures.  She was the 2009 HCES Representative for the Structural Engineer’s Association of Hawaii (SEAOH) and was a Past Director of SEAOH for 2009 and 2010.  She was also the 2013-14 HCES Secretary, 2014-15 Treasurer, and 2015-16 Vice Chair.

Joanne Hiramatsu


Joanne graduated with a Bachelor of Arts degree in Environmental Planning from the University of Hawaii through the Liberal Studies Program.  She has been practicing environmental and land use planning for over 30 years.  She currently works for Belt Collins Hawaii, LLC as the Director of Planning and oversees all environmental, land use, entitlements, and permitting projects.  Se is a member of the American Planning Association (APA) and is the Past President of AMerican Public Works Association (APWA).

Kristen Yoshida, P.E.


Kristen Yoshida PE

Kristen Yoshida, P.E. is a civil engineer with Belt Collins Hawaii LLC.  She attended the University of Hawaii at Manoa where she earned a B.S. and M.S. in Civil Engineering.  She is the Co-Chair of the HCES E-Week Exhibits Committee as well as the HCES SWE Representative.  She is also active volunteering for career development and outreach events with the SWE-Hawaii Collegiate Section.




Mr. Kawahara is the President of a Kama’aina civil engineering firm. Prior to joining Akinaka &
Associates, Ltd., Mr. Kawahara served as the Deputy Director for the State of Hawaii, Department of
Land and Natural Resources, Commission on Water Resource Management. He implemented the State
Water Code statue, rules, and directives of the Commission to protect and manage the groundwater and
surface water resources for all of the Hawaiian Islands. In addition, he oversaw the Engineering Division,
Office of Conservation and Coastal Lands, State Parks, Division of Forestry and Wildlife and the Division
of Aquatic Resources. He also represented the Department on the Natural Area Reserves Commission.
His professional experience in both the private and public sectors includes planning, design, contracting,
construction, construction management, regulatory compliance and environmental quality
monitoring. He has extensive experience in management for a variety of projects including water
resource and system management, master planning, wastewater pretreatment, collection, treatment,
disposal, recycled water and biosolids reclamation.
Mr. Kawahara graduated in Civil Engineering from the University of Hawaii at Manoa. He is active in the
Air Force Civilian Advisory Council, American Council of Engineering Companies, American Public Works
Association, American Society of Civil Engineers, American Water Works Association, City & County of
Honolulu Zoning Board of Appeals, Hawaii Council of Engineering Societies, Hawaii Water Environment
Association, Hawaii Leeward Planning Conference, ‘Iolani Alumni Association, ‘Iolani School Board of
Governors, UH College of Engineering Dean’s Council and Holmescoming Committee, UH Engineering
Alumni Association, UH Engineer’s Council and Water Environment Federation. In his free time, he
enjoys spending as much time as he can enjoying the outdoors and near or in the water.