Our staff has a broad range of experience and come from diverse scientific backgrounds. Their educational backgrounds include environmental science, chemistry, geology, geochemistry, environmental engineering, industrial engineering, biology, physical science, and natural resources management. The ESI staff includes three professionals with Ph.D.s (a geochemist, a chemist, and a biotechnologist), two Professional Geologists, a master-level Certified Hazardous Materials Manager, and a Certified Manager of Quality/Organizational Excellence. Currently, there are 22 employees on the ESI Team.

Our Administrative Staff

Howard B. West. Ph.D.
Howard B. West, Ph.D.


Dr. West is the President of ESI and has over 30 years of professional experience in Hawaiʻi. He is a former faculty member at the School of Ocean and Earth Sciences, University of Hawaiʻi at Mānoa. As one of the founding members of ESI, Dr. West provides technical oversight and direction for ESI projects. He is an experienced program manager for long-term projects involving environmental planning, assessment, and remediation.

Robert A. Chong

Program Manager

Mr. Chong is the Program Manager for commercial projects at ESI and he has over 18 years of professional experience in Hawaiʻi. He has been at ESI since 2002. He has extensive project management and field experience working with a wide variety of federal, state, local, and private sector clients. Managing a diverse project portfolio, Mr. Chong has worked closely with both the State of Hawaiʻi Department of Health [DOH] and the Environmental Protection Agency.

Scott Simmons
Scott E. Simmons, CHMM

Senior Vice President / 

Federal Program Manager

Mr. Simmons is the Senior Vice President and Federal Program Manager at ESI and he serves as Senior Technical Advisor on commercial projects. He has over 27 years of professional experience in Hawaiʻi and extensive project management and field experience working with federal and private sector clients throughout the Pacific. He has been at ESI since 2006.

Audrene M. Duarte

Vice President / Office Manager

Ms. Duarte is the Vice President and Office Manager at ESI and has over 39 years of administrative, management, and executive support experience. She has been at ESI since 2003. She is responsible for managing the company’s administrative, financial, and human resources programs.  Her areas of responsibility include accounting, payroll, human resources, policy development, project support, and many other operational functions..

Our Managers

Stephanie J. Davis
Stephanie J. Davis

Project Manager / Operations Manager

Ms. Davis is a Project Manager at ESI and she has extensive experience working on federal agency and private industry projects. She has over 19 years of industry experience and has served on projects in a multitude of capacities including project manager, environmental scientist, fisheries technician, environmental laboratory technician, field biologist, and technical reviewer. Ms. Davis has managed and conducted numerous environmental investigations throughout the State of Hawaiʻi.

Peter E. Morris
Peter E. Morris

Project Manager

Mr. Morris is a Project Manager at ESI, primarily for State of Hawaii Department of Transportation Airports Division projects. He has experience working on projects for other government agencies, as well, and extensive experience working on residential, commercial, and industrial projects. He has over 19 years of industry experience conducting environmental site assessments, site investigations, and remediation projects.

Traci Y. Sylva, Ph.D.
Traci Y. Sylva, Ph.D.

Project Manager / Senior Chemist

Dr. Sylva is the Senior Chemist at ESI and also serves as Project Manager. A former faculty member in the Department of Molecular Biosciences and Bioengineering at the University of Hawaiʻi at Mānoa, she has over 27 years of professional experience in Hawaiʻi and has been at ESI since 2004. She has extensive experience in the preparation and review of project planning documents, the collection of environmental samples, data quality evaluation, coordination and communication with analytical laboratories and regulatory agencies, the preparation of data usability assessments, and preparing technical reports for government and commercial clients.

J. Doug Heard
J. Douglas Heard

Project Manager

Mr. Heard is a Professional Geologist and Project Manager at ESI with 32 years of experience in environmental consulting. He has worked extensively as a client liaison with regulatory agencies and has strong technical and project management skills in working with both public and private sector clients, including municipal, industrial, agricultural, public utility, and commercial clients. He has conducted, managed, and provided technical oversight for numerous soil, groundwater, and soil vapor investigations; remediation projects; Phase I and II environmental site assessments; and preliminary environmental assessments. 


Our Professional Staff

On the federal side of ESI operations, our staff excels at the long-term management of complex task orders involving site investigations under CERCLA. For more than a decade, they have managed multiple task order awards contemporaneously at multiple Department of Defense installations and former installations.


On the industrial side of ESI operations, our staff has provided long-term management of portfolios for petroleum companies and industrial facilities subject to regulation under CERCLA, RCRA, the Clean Water Act, and the Clean Air Act. Members of our staff have provided comprehensive services to the owners and operators of bulk fuel terminals, asphalt plants, asphalt terminals, concrete plants, and quarries.


On the commercial side of our ESI operations, our staff has excelled at performing due diligence assessments for property transactions and for corporate acquisitions. The ESI staff includes professionals with more than two decades of experience with underground storage tank investigations, site assessments, and Phase I environmental site assessments. Our staff’s expertise includes asbestos, lead-based paint, and mold investigations.