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June 2015 - present
August 1999 – June 2015
Team Leader for the Integrated Solid Waste
Management Model Development (ISWM) (1994 to date).
Developed a quantitative framework and a mathematical
model to aid in decision making for integrated municipal
solid waste (MSW) management.
Project Technical Leader for the Development of
Integrated Water Quality Analyses for the Shared Waters
of the United States and Mexico (2004 to 2006). The goal
of EPA’s Border 2012 Program was to reduce water
contamination on the U.S.-Mexico border by collecting
and analyzing water quality data.
Team Member for the Air Quality Modeling Decision
Support Tool (2004 to 2006). Helped create an air
quality modeling decision support tool to help the city
of Beijing, China, analyze and improve air quality
before the 2008 Olympic Games.
Team Member for the Development of GIS Tools to Evaluate
Risks to Watershed Health from Wildfires in the Western
United States (2004 to 2006).
August 1994 – July 1999
Developed a quantitative framework to aid in decision making for integrated municipal solid waste (MSW) management. Developed the mathematical model to solve problem that caused the previous models to be time-consuming and overly complex. The model uses a flexible framework to represent many site-specific issues and considerations. It incorporates both cost and environmental objectives.
The environmental objectives are defined in terms of life cycle inventories of energy and emissions (of carbon monoxide, fossil- and biomass-derived carbon dioxide, nitrogen oxides, sulfur oxides, particulate matter [PM], and PM10) and greenhouse gases) associated with MSW management strategies. The application of this model was demonstrated through realistic hypothetical case studies. Several MSW management scenarios of typical interest to U.S. municipalities were studied. Through these illustrative applications, the flexibility and capabilities of the model were demonstrated.
January 1992 – July 1994
Served as a member of the Sustainable
Urban Development Program at the University of Costa
Rica, which helped develop projects in a variety of
disciplines, including solid waste management, urban
growth, and the use of appropriate technologies such as
clean energy, biomass energy and low-cost technologies
to solve problems in urban and rural areas.
Served as a research team member on a
project that developed management plans for national
parks and protected areas in Costa Rica. Plans included
tropical rain forest biodiversity protection plans,
surface waters, coastal and marine resources management,
environmental education, socio-economic studies to
integrate communities interacting with parks, and
carrying capacity studies.
Taught courses on strength of materials, mechanics, and engineering economics as part of his instructor duties at the university.
January 1992 – July 1994
Performed consultant work for the United
Nations under Special Service Agreement CLA/94/1337,
analyzing product manufacturing in Costa Rica from a
life cycle assessment perspective.
Served as a research team member on a project with the German Agency for Technical Assistance (Deutsche Gesellschaft für Technische Zusammenarbeit (GTZ) GmbH) that focused on solid waste management in the San Jose, Costa Rica metropolitan area.
Professional
Service
2013
(March 15). Judge at the Water Resources and
Environmental Engineering Graduate Research Symposium.
North
Carolina State University, Raleigh, NC.
2012
(March 16). Judge at the Water Resources and
Environmental Engineering Graduate Research Symposium.
North
Carolina State University, Raleigh, NC.
2012 (Feb 7). Judge at the Centennial Campus Magnet Middle School Science Fair. North Carolina State University, Raleigh, NC.
2011 (September 23). Speaker at Computers &
Systems-Centric Colloquium. North Carolina State
University, Raleigh, NC.
2011 (July 21). Lecture about Solid Waste Management
and Policy. Mount Olive College, Durham, NC.
2011 (July). Reviewer for "Natural Hazards", Journal of
the International Society for the Prevention and
Mitigation of Natural Hazards.
2010 (March). Judge at the Water Resources and Environmental Engineering Graduate Research Symposium. North Carolina State University, Raleigh, NC.
2009 (March). Reviewer for "Waste Management &
Research", Journal of the International Solid Waste
Association Online.
2009 (March). Judge at the Water Resources and Environmental Engineering Graduate Research Symposium. North Carolina State University, Raleigh, NC.
2008 (March). Judge at the Water Resources and Environmental Engineering Graduate Research Symposium. North Carolina State University, Raleigh, NC.