Jacob M. Torres, PhD, PE, CFM
Managing Partner, Principal
Hydrology & Water Resources Engineering

Dr. Jacob Torres is a Water Resources Engineer and Hydrologist with more than 10 years of practicing technical and consulting experience.  His expertise includes urban storm water management, watershed feasibility studies, master drainage plans, flood risk analysis, preliminary engineering reports, open channel hydraulics (1D/2D unsteady modeling), water distribution system planning/modeling (EPANET, WaterGEMS, HAMMER), and coastal hydrodynamic modeling (ADCIRC, SWAN).  His projects have involved flood impact and mitigation analyses, ring levee interior drainage analysis, flood damage modeling, sediment transport analyses, storm surge analyses, hydraulic transient mitigation for pump station design.  Dr. Torres’s professional experience has involved clients at the federal, state, regional, local, and academic levels (i.e. The United States Army Corps of Engineers, Texas Department of Transportation, Harris County Flood Control District, City of Bryan, and Texas A&M University).  He has published over 15 peer-reviewed journal articles and conference papers; helped craft industry guidelines for 1D/2D unsteady modeling; and has provided over 45 conference talks and guest lectures.  He is an active member of the American Society of Civil Engineers (ASCE), Texas Society of Professional Engineers (TSPE), Texas Floodplain Management Association (TFMA), serves as a professional mentor to the Engineers without Borders – Texas A&M Student Chapter, and has participated on the Public Planning Committee for City of Bryan's Flood Mitigation Plan, Texas.  Dr. Torres enjoys teaching, mentoring, and playing basketball with his kids.

Edith Arámbula-Mercado, PhD, PE
Partner, Principal
Transportation Engineering


Dr. Edith Arámbula-Mercado is a Transportation Engineer and Pavement Materials Scientist, bringing with her a combined 12 years of industry and applied research experience from the federal, state, and private sectors (i.e. United States Federal Highway Administration, Texas A&M Transportation Institute (TTI), and Applied Research Associates, Inc.).  Dr. Arámbula-Mercado’s specialty lies in the characterization of flexible pavement materials, beneficial uses of reclaimed asphalt pavement (RAP), and pavement asset management.  She has provided sponsored technical services for the Texas Department of Transportation (TxDOT), Florida Department of Transportation, Maryland State Highway Administration, Delaware Department of Transportation, and the District of Columbia Department of Transportation.  Dr. Arámbula-Mercado has consulted for airports such as LaGuardia Airport (New York) and San Francisco International Airport performing runway conditions assessments.  She is an active member of the Association of Asphalt Paving Technologists (AAPT), American Society of Civil Engineers (ASCE), and Transportation Research Board (TRB) for which she serves on three steering committees.  Dr. Arámbula-Mercado has published over 45 peer-reviewed publications and has authored more than 20 technical reports sponsored by TxDOT, TTI, and the National Cooperative Highway Research Program.  She has given several lectures; more recently serving as an honorary keynote speaker for Mujeres en Ingeniería: Tecnología en Materiales Asfalticos (Women in Engineering: Technology in Asphalt Materials) in Monterrey, Nuevo León, México, March 2019.  Dr. Arámbula-Mercado enjoys reading and listening to suspenseful podcasts.

Charles Gurganus, PhD, PE
Senior Pavement Scientist
Transportation Engineering


Dr. Charles Gurganus is a well-established Transportation Engineer and Pavement Scientist/Asset Manager; bringing with him more than 12 years of experience to Torres & Associates, LLC.  He established himself at the Texas Department of Transportation (TxDOT); serving as Area Engineer for TxDOT’s Tyler District.  As TxDOT's Area Engineer, Dr.  Gurganus was responsible for over 50 employees, including construction, laboratory, maintenance, and office staff; responsible for construction management, including quality assurance testing, field design, change orders and contract management.  His combined TxDOT projects have ranged from $15 million to $50 million.  As Research Engineer and Principal Investigator (PI) for the Texas A&M Transportation Institute (TTI), Dr. Gurganus has conducted surface drainage ratings and roadway shape analyses for TxDOT’s Asset Management System using Mobile LIDAR systems in addition to ride quality verification testing using inertial profilers.  He is active with the Maricopa Associate of Governments serving as cost risk assessor for the IH-10/Broadway Curve Project (a project valued at $650 million).  Dr. Gurganus was a board member of the Longview Metropolitan Planning Organization Technical Advisory Board and the Keep Longview Beautiful Board.  Dr. Gurganus enjoys bowling and spending time with his family.