S.S. Papadopulos & Associates, Inc. (SSP&A) is a groundwater and environmental consulting company providing specialty services in water resource evaluation, geochemistry, and environmental remediation. SSP&A’s reputation is built upon pioneering achievements in hydrology, from the development of innovative analytical test methods to determine aquifer properties, to the (co-)development of several of today’s standard groundwater modeling tools. SSP&A has continued its leadership through the development and application of numerical simulators that are used worldwide for flow and transport modeling and other aspects of hydrologic analyses. SSP&A offers technical expertise in: • Groundwater and surface water resource management and evaluation; • Hydrology, hydrogeology, and geology; • Environmental and forensic geochemistry; • Numerical modeling for groundwater, surface water, conjunctive use, contaminant fate and transport, and geochemical reactive transport; • Programming and software development for water resource applications; • Groundwater, soil, and sediment remediation.

GroundWater Desktop (GWD) is a three-dimensional (3D) user interface (GUI) for visualizing groundwater models and environmental data. GWD includes tools for 3D kriging; groundwater level mapping; hydraulic capture analysis and analytical solute transport. GWD supports visualization of MODFLOW and related programs including the latest unstructured grid capabilities encompassed in MODFLOW-USG. Implemented in GWD, KT3D_H2O combines various programs to generate gridded maps of groundwater level elevations using hydrologic trend terms, together with particle paths and estimated capture zones. GWD provides powerful 3D kriging capabilities with the option to krige directly on Modflow grid and use MT3D output as an external drift. GWD also includes enhanced version of the EPA screening-level solute transport model BIOSCREEN (“BIOSCREEN-AT”). Enhancements include: the use of exact analytical solution, and multiple 3D simulations from multiple sources with several types of inflow boundary types.

Website: http://www.sspa.com/