Contamination Studies

Groundwater, Soil and Sediment

Much of SSP&A's current work involves the investigation of groundwater, soil and sediment contamination at regulated sites. We have amassed considerable experience in RCRA, CERCLA,
and state programs nationwide.

Our work on contamination studies has involved:

  • Identification of potential sources of contamination, and evaluation of the extent of contamination in groundwater, soil and sediment;
  • Identification of potential receptors and assessment and simulation of the fate of contaminants;
  • Identification and evaluation of non-aqueous phase liquid (NAPL) and dense non-aqueous liquid (DNAPL) contamination;
  • Analysis of historical presence and transport of contaminant;
  • Analysis of soil/sediment/groundwater interactions and transport;
  • Analysis of sediment impact zone;
  • Modeling of contaminant flow and transport.

Moreover, SSP&A can provide the full scope of services for remediation of contamination.

Featured Projects

Stringfellow Superfund Site Feasibility Study and Remediation
Glen Avon, California

The Stringfellow Hazardous Waste Site is located within the Glen Avon Basin, a segment of the Chino groundwater basin, in Riverside County, California, approximately 50 miles east of Los Angeles. The disposal area was operated as a Class I industrial waste disposal facility from 1956 through 1972. Approximately 34 million gallons of industrial process wastes containing spent acids and caustics, solvents, pesticide by-products, metals and other inorganic and organic contaminants were discharged into evaporation ponds onsite during this period. SSP&A acted as principal technical advisor on groundwater issues, oversaw field investigations, and evaluated remedial activities. Read more...

Hardage Superfund Site
Criner, Oklahoma

SSP&A has conducted several investigations at this former hazardous waste disposal facility under the jurisdiction of the United States District Court of Western Oklahoma and operates under a 1990 Court Order and not under a traditional EPA Record of Decision. As part of the Feasibility Study SSP&A conducted groundwater flow and transport modeling. A three-dimensional flow model of the site was constructed, calibrated, and used to assess proposed remedial alternatives and to optimize well locations and pumping rates for the preferred alternative. Read more...

Toms River Plant Superfund Site Advisory
New Jersey

The Toms River Plant is operated by Ciba-Geigy, Inc. in Toms River, New Jersey. The area is underlain by the Cohansey/Kirkwood Formation, an aquifer contaminated as a result of plant activities. Dr. Stavros Papadopulos has acted in an expert capacity on the Scientific Advisory Committee, comprised of four internationally-renowned hydrogeologists, reviewing and analyzing existing site data. Read more...