•     Total Maximum Daily Loads
•     Risk Assessment
•     Natural Attenuation of Contaminants in the Environment
•     Environmental Characterization of Bays and Estuaries
•     Geographical Information Systems
•     Decision Support Systems
•     Ground Water Pollutant Transport and Modeling
•     Hazardous Waste Site Investigation and Remediation
•     Hydrology and Floodplain Management
•     Fluid Mechanics and Hydraulics
•     Urban Stormwater Quality/Non-Point Source Pollution

Current Research Projects

• Total Maximum Daily Loads for Dioxins in the Houston Ship Channel, Texas Commission on Environmental Quality, 2000-2005.

• Total Maximum Daily Loads for  Fecal Pathogens in Buffalo and White Oak Bayous, Texas Commission on Environmental Quality, 2000-2005.

• Total Maximum Daily Loads for Fecal Pathogens in Clear Creek, Texas Commission on Environmental Quality, 2005.

• Developing an Integrated Methodology for Designing Long Term Monitoring Plans (LTMPs) , Air Force Center for Environmental Excellence 1998-2005.

Completed Research Projects

• Developing a Guidance Manual for Modeling Natural Attenuation at Field Sites, Air Force Center for Environmental Excellence, 2000-2003.

• Multi-Purpose Water Management Technology for the Texas-Mexico Border, Texas Advanced Technology Program, 2000-2003.

• Evaluating Source Grouting and ORC for Remediating MTBE Sites, Gulf Coast Hazardous Substance Research Center, 2000-2003.

• Characterizing the Intrinsic Remediation of MTBE at Field Sites, Gulf Coast Hazardous Substance Research Center, 2000-2004.

• Transport, Fate and Risk Implications of Environmentally Acceptable Endpoint Decisions, Gulf Coast Hazardous Substance Research Center, 1999-2003.
• Intrinsic Bioremediation of Mixed Fuel/Solvent Plumes at Petroleum and Petrochemical Gulf Coast Sites, Texas Hazardous Waste Research Center, 1998-2002.
• Developing Human Exposure Estimates for Indoor/Outdoor Air Pollution in Houston, Environmental Institute of Houston, 1998-1999.
• GIS and Remotely Sensed Mapping of Changes in Coastal Environments, Houston Coastal Center, 1998-1999.
• Estimating First Order Decay Coefficients for Petroleum Hydrocarbon Biodegradation,  American Petroleum Institute, 1998.
• Natural Attenuation of Chlorinated Compounds, Union Carbide Corporation, 1996 - 2000. 
• Risk Assessment Analysis at PST Sites, KEI Consultants, 1996 - 1997.
• Quantifying Natural Solvent Degradation in the Presence of Fuels and its Potential Enhancement During Bioventing and Bioremediation, Environmental Protection Agency, 1995 - 1997.
• BIOPLUME Modeling of Made 2 Site, US Air Force, 1995 - 1996.
• IBM Sur Grant, IBM Corp, 1995.
• OASIS Japan:  Phase II, Japan Research Institute, 1994 - 1995.
• Land Use/Land Cover Surveying and Assessment in the Laguna Madre, Texas General Land Office, 1994 - 1995.
• Characterization of Oil and Gas Waste Disposal Practices and Assessment of Treatment Costs, Department of Energy, 1992 - 1994.
• Subsurface Monitoring Data for Assessing In-Situ Biodegradation of Aromatic Hydrocarbons (BTEX) in Groundwater, American Petroleum Institute, 1991 - 1994.
• OASIS Japan:  Phase I, Japan Research Institute, 1993 - 1994.
• Characterization of Non-Point Sources and Loadings to Galveston Bay, Galveston Bay National Estuary Program, 1991 - 1992.
• Decision Support System for Evaluating Remediation Performance with Interactive Pump and Treat Simulator, Environmental Protection Agency, 1992 - 1994.
• Systems Analysis/Aquifer Assimilative Capacity, Environmental Protection Agency, 1992 – 1996.
• The State of the Bay: a Characterization of the Galveston Bay Ecosystem, Galveston Bay National Estuary Program, 1992 - 1993.