Dr. Marrin has conducted a variety of environmental research projects.
Environmental Chemistry
Tracking persistent man-made chemicals to identify the sources of river, aquifer, and coastal water pollution.
Developing biogenic gas analyses (e.g., methane, carbon dioxide) to assess pollutant degradation pathways.
Pioneering the use of vapor-phase surveying to detect VOCs (e.g., fuels, solvents) in groundwater aquifers.
Providing litigation support to attorneys on environmental cases involving pollution and resource allocation.
Designing an in-situ respirometry apparatus to measure the kinetics and pathways of diesel fuel biodegradation.
Comparing the available options for disposing wastewater effluent in wetland, arid, and coastal environments.
Assessing the potential for landfill gas migration to impact groundwater underlying an active solid waste facility.
Co-chairing a state appointed committee that set guidelines for predicting the fate and transport of pollutants.
Producing and scripting a video presentation that explained the behavior of transition (heavy) metals in water.
Critiquing the design and long-term monitoring of groundwater remediation (e.g., vapor extraction, bioventing).
Developing sample collection and analysis protocols to identify probable sources of sewage in coastal waters.
Creating report formats that permit the interpretion of laboratory data in terms of natural attenuation mechanisms.
Locating the source (recharge area) and identifying the chemical/physical properties of mountain spring waters.
Marine/Freshwater Ecology
Investigating the ecological effects of biocide usage on fishes in the Caribbean Sea and Atlantic Ocean.
Conducting baseline studies to assess the impact of crude oil spills on seaweeds in the Pacific Ocean.
Documenting changes in species diversity and habitat related to the impoundment of mountain streams.
Evaluating lake fisheries and the limnological and/or ecological impacts on native and introduced species.
Compiling the frequency ranges and intensities of common underwater sounds (natural and man-made).
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