Computer Modeling

Understanding the past, present, and future movement of water and contaminants in the subsurface is essential to making wise environmental decisions. Computer modeling is one of the most advanced methods available to gain this understanding, and its applications are highly diverse. Accordingly, the computer modeling expertise offered by Daniel B. Stephens & Associates, Inc. (DBS&A) is a vital component of our suite of professional services.

DBS&A's computer modeling capabilities cover a full spectrum, ranging from the application of simple analytical solutions to state-of-the-art and highly complex numerical computer codes. Examples of our projects range from detailed simulation of the subsurface flow and transport of three interacting fluids (i.e., water, air, and organic solvent) within a small area to simulation of groundwater recharge and flow through geologically complex aquifer systems over an area of hundreds of square miles. In support of our simulation efforts, DBS&A offers advanced database services and geographic information system (GIS) technology for analysis of site data.

The strength of our modeling group lies in the combination of extensive practical experience and strong academic backgrounds. The respect accorded to our modeling professionals is demonstrated by the publication of their findings in peer-reviewed journals and their selection by EPA to develop computer codes and guidance for national dissemination. Through the efforts of these individuals, DBS&A consistently meets the challenge to develop new and innovative simulation approaches to address the needs of our clients.