Remediation Feasibility Studies & Design

Augmenting our capabilities in investigating and defining the presence and extent of contamination in soil, water and sediment, SSP&A has the expertise for addressing that contamination and identifying the appropriate approach for remediation. Not only are we familiar with state-of-the-art technologies, SSP&A's engineering and scientific staff can design innovative and supportable approaches for remediation of complicated contamination problems.

As often is the case for remediation issues, negotiations with local, state and federal regulatory agencies are necessary. SSP&A has successfully negotiated the level and degree of clean-up, remediation goals, and consent decrees on behalf of our clients.

The services that we offer for remediation include:

  • Evaluation of remedial alternatives and implementation of the selected/optimal system;
  • Design and optimization of pump-and-treat systems;
  • Design and installation of soil-vapor extraction, air sparging, and surfactant systems;
  • Development/design of innovative technologies;
  • Presentation of results and negotiations with regulatory agencies;
  • Evaluation of remedial system performance data.

Featured Projects

FAR-MAR-CO Subsite, Hastings Groundwater Contamination Superfund Site
Hastings Nebraska

SSP&A is providing ongoing services as the lead hydrogeological consultant for the groundwater operable unit of the FAR-MAR-CO subsite of the Hastings groundwater contamination site. SSP&A oversaw a Remedial Investigation (RI) of the FAR-MAR-CO subsite in 1993. Subsequently, SSP&A developed a Focused Feasibility Study (FFS), and Engineering Evaluation/Cost Analysis (EECA) Report that established plans for an innovative Interim Remedy for groundwater collection and treatment. Since implementation of that remedy (1996/1997), SSP&A has overseen collection and interpretation of monitoring data, and has been the primary technical contact for USEPA’s concerns. Read more...

Lone Pine Landfill Superfund Site
New Jersey

SSP&A performed an RI/FS for the off-site area surrounding the Lone Pine landfill. For the RI, SSP&A conducted field investigations and analyzed the data to describe the hydrogeologic and chemical systems. The extent and magnitude of existing off-site contamination and the potential for migration of this contamination in the groundwater and surface-water systems outside the landfill were assessed. For the FS, potential remedial alternatives for the off-site area were evaluated in detail. A three-dimensional groundwater flow model was used to predict the effects of the various potential remedial actions on the hydrogeologic system. Remedial alternatives that were considered and modeled included a slurry wall with french drain and impermeable cap, combined with various arrays of injection and extraction wells and interceptor trenches. Read more...

Chem-Dyne Superfund Site
Hamilton, Ohio

At this hazardous waste treatment plant, spills and dumping of chemicals had created a plume of VOC-contaminated groundwater that extended over 40 acres. SSP&A’s participation in this project included: delineation of the plume; development of the remediation plan that involved pumping and treatment of the contaminated water and injection of a portion of the treated water; design and supervision of the construction of related monitoring, extraction, and injection wells; assistance to the PRPs in negotiations with regulatory agencies; and annual assessment of operation and effectiveness of on-going remediation system. Read more...

Remedial Designs for Groundwater Contaminated by Fuel-Spills
Undertaken for the New York State Department of Environmental Conservation

SSP&A has provided technical oversight for the design and implementation of several pump-and-treat and SVE/Air-Sparging remedies for groundwater contaminated by fuel-spill related contaminants at numerous sites throughout New York State. This broad support has included simulations of groundwater flow and the migration of BTEX and fuel oxygenates such as MTBE, to guide the selection and sizing of ex-situ treatment streams; the design and interpretation of performance data collection activities; and the optimization of monitoring networks for assessing remedial performance and associated risk to receptors. In 2004, SSP&A was recognized as a co-recipient, together with the prime contractor, 2004 NGWA Outstanding Groundwater Remediation Project Award. Read more...