17-3304 Mariner Avenue Tiyan Barrigada, Guam 96913
671.300.4751 671.300.4752


All Living Things Of The Earth Are One • Manunu Todu I Manlåla’la’


The Administrator of Guam EPA is appointed by the Governor of Guam and confirmed by the Guam EPA Board of Directors. Walter S. Leon Guerrero was appointed Acting Administrator in October 2016 under the Calvo Tenorio administration, and then reappointed in January 2019 under the Leon Guerrero Tenorio administration. He was working as the Division Head Manager of the Guam EPA’s DSMOA Division before his 2016 appointment.

Several Guam EPA programs report directly to the Administrator. These programs support projects and programs throughout the Agency.

Administrative Services Division

The Administrative Services Division (ASD) is critical in helping programs purchase supplies, hire staff and communicate with other government agencies. This Division answers directly to the Administrator and supports all aspects of the agency.

Information Management

Information flow is critical to the function of Guam EPA. To help information flow internally and with the public, Guam EPA has support staff that ensure the network is functioning and there is a public outreach and education aspect to everything the Agency does.

Staff and Contact Information

Administrator Walter S. Leon Guerrero Walter.Leonguerrero@epa.guam.gov 1.671.300.4759
Deputy Administrator Michelle Lastimoza Michelle.Lastimoza@epa.guam.gov 1.671.300.4751
Board Secretary Arlene Acfalle Arlene.Acfalle@epa.guam.gov 1.671.300.4759
Administrative Services Officer Connie Aflleje Connie.Aflleje@epa.guam.gov 1.671.300.4754
Public Information Officer Nic Rupley Lee Nic.Rupley@epa.guam.gov 1.671.300.4753
Administrative Assistant Maggie Castro Maggie.Castro@epa.guam.gov 1.671.300.4752
Computer Systems Analyst II Romeo Zacarias Romeo.Zacarias@epa.guam.gov 1.671.300.4761
Program Coordinator I Vilma Balajadia Vilma.Balajadia@epa.guam.gov 1.671.300.4799
Clerk Typist III Christopher Duenas Chris.Duenas@epa.guam.gov 1.671.647.4372
Office Aide Albert Padua Albert.Padua@epa.guam.gov 1.671.300.4792
Office Aide  Angela Pocaigue Angela.Pocaigue@epa.guam.gov  1.671.300.4752
Environmental Inspector I Reid Aguon Reid.Aguon@epa.guam.gov 1.671.300.4784

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