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Environmental Water Resource Consultant

The Columbia Basin Groundwater Management Area SSP&A is assisting a grass-roots organization in developing water resource tools to support assessment of water management alternatives within the 8,000 square mile Columbia River Basalt Group aquifer.
Hyde Park Landfill Groundwater Model SSP&A  developed a model of groundwater flow in the fractured rock where over 20,000 tons of chlorinated DNAPLs were released.
Hanford Nuclear Reservation Remediation Modeling SSP&A is part of a multi-firm team developing remedial alternatives and strategies for the RI/FS and post Record of Decision (ROD) activities. 
Long Island, New York MTBE Groundwater Modeling SSP&A developed groundwater models to evaluate the migration and remediation of more than 30 large plumes dominated by MtBE (Methyl tertiary-butyl ether) on Long Island, New York.
San Francisco Bay Since 1984, SSP&A has directed the investigation and remediation of the 1990 Bay Road site in East Palo Alto, California.
Piceance Basin, Colorado SSP&A has conducted several field sampling programs, groundwater and gas geochemistry evaluations, and water resource studies related to the develpment of oil and natural gas resources in western Colorado, in addition to other states.

Our Expertise

S.S. Papadopulos & Associates was
established in 1979 to provide
professional groundwater
and hydrogeology consulting services.
With that cornerstone of expertise, we
have continued to grow and have
developed an internationally recognized
practice in contaminant studies,
environmental engineering,
remediation, geochemistry, and
surface-water hydrology
. Learn More


SSP&A has developed modeling and related software for over 20 years. SSP&A develops and distributes software for groundwater modeling and related analysis. Learn More


SSP&A Training Course - Introductory and Advanced PEST – Our Bethesda, MD office is hosting back to back PEST courses September 28 - October 1. The introductory course will introduce inverse methods, providing theoretical background based on least-squares, and provide practical experience in their implementation in conjunction with a range of environmental models. The advanced course will focus on highly parameterized inversion in calibration of ground and surface water models, and in exploration of the uncertainty associated with the parameters and predictions associated with these models.
SSP&A Training Course - Theory and Application of MODFLOW-USG – Our Bethesda, MD office is hosting a three day training course September 22-25. The unstructured grid foundations of MODFLOW-USG provide for a wide range of options for local grid refinement in the vicinity of focused areas of interest such as surface water features and pumped wells. This focused course will cover groundwater modeling with MODFLOW-USG from start-to-finish.

US Locations

International Locations