The following representative projects highlight SSP&A’s multi-disciplinary specialty services that help clients address water-resources and environmental remediation challenges.
Hanford Site Statistics and PHREEQC Geochemical Model
SSP&A was initially engaged to assess groundwater conditions and develop and apply models to design, evaluate, and optimize groundwater remedies for CERCLA operable units across the Hanford Site.
Coronet Industries Alternative Site
SSP&A was retained to develop a groundwater transport model that would explicitly account for the long-term fate of arsenic and boron in aquifers underlying the Coronet Industries Alternative Site, located in Plant City, Florida.
Manufacturing Facility Groundwater Investigation and Remediation Oversight
SSP&A was retained to identify the source of a 1,1,1-trichloroethane, 1,1-dichloroethene, and 1,4-dioxane plume in groundwater beneath the client’s facility was from the facility or from offsite source(s).
Agricultural Aquifer Storage and Recovery Geochemical Modeling
ASR is a water resource management strategy used in central California to make use of a source water, such as spring snowmelt that flows in rivers and canals.
Hanford Site: Groundwater Modeling
The USDOE Hanford Site transitioned over decades from a Manhattan Project mission to environmental assessment and cleanup. SSP&A was initially engaged to assess groundwater conditions and develop and apply models to design, evaluate, and optimize groundwater remedies for CERCLA operable units across the Hanford Site.
State of Minnesota vs. 3M Company
The State of Minnesota selected SSP&A to provide expert services for a natural resources damage lawsuit related to impacts to groundwater and surface water from releases of PFAS from the 3M manufacturing facility in Cottage Grove, MN.
Aquifer Parameter Tool (Texture2Par) Development
Texture2Par facilitates the assignment of aquifer parameter values directly to IWFM and MODFLOW model input files on the basis of sediment texture data acquired from stratigraphic logs.
Denver Federal Center Regulatory Compliance
SSP&A performed a detailed investigation that revealed contaminated soil remains at concentrations exceeding levels protective of residential/unrestricted use but are intertwined with subsurface utilities or in lenses that extend under buildings and roadways at the Denver Federal Center site.
Biggars Lane Landfill
SSP&A developed analyses to predict the evolution of the concentration of chloride at a compliance boundary downgradient from an existing landfill and proposed new landfill cells.
Former Halliburton Manufacturing Facility
SSP&A was initially retained to evaluate the fate and transport of CrVI (from historical plating activities) and the effectiveness of a combined strategy of in-situ and ex-situ remedies.
Transco-Williams Groundwater Remediation
SSP&A works with the Mississippi Department of Environmental Quality and the Federal Energy Regulatory Commission to manage monitoring oversight and long-term management of the Transco-Williams facility.
Denver Federal Center Groundwater Investigation and Remediation
In accordance with the Denver Federal Center (DFC) Site-Wide RCRA Facility Investigation (RFI) Quality Assurance Project Plan and corresponding standard operating procedures, SSP&A provides field and QA/QC sampling, data validation, sample result screening, evaluation, and data management, and reporting at the DFC site.
Texas Eastern Natural Gas Compressor Stations, PCB Support
For over 10 years SSP&A consulted to the NYSDEC spills department, evaluating and simulating the fate and remediation of fuel spills.
Leviathan Mine Site
SSP&A was initially retained to provide expert review and evaluation of hydrologic, hydrogeologic, and geochemical conditions at the former Leviathan Mine Site, and to assess the sources of impacts of mining-related residues on groundwater and surface water.
West Lake Landfill Site
SSP&A was retained to estimate and depict the lateral extent and the volume of radiologically-impacted material (RIM) within Areas 1 and 2 of Operable Unit 1 (OU-1) at West Lake Landfill Site
1990 Bay Road Site
SSP&A led site characterization, removal of contaminated soil, and stabilization and containment of remaining impacted soil to enable site redevelopment.
Columbia Basin Groundwater Management Area (GWMA) Groundwater Resources
Translating the developing conceptual model, complete with the natural and man-made complexities described above, is a challenging task that is being undertaken jointly by S.S. Papadopulos & Associates, Inc. (SSP&A) together with GSI Water Solutions in collaboration with the GWMA.
Water Resources Assessment, Salt Basin
On behalf of the New Mexico Interstate Stream Commission (NMISC), SSP&A was asked to provide expert insight into the State’s effort to assess feasibility regarding potential Salt Basin groundwater development for interbasin transfer either to the Pecos or Lower Rio Grande Basins.
EPA Region 5 Hydrogeological Synthesis and Numerical Modeling Support
Multiple Sites in EPA Region 5: Illinois, Indiana, Michigan, Minnesota, Ohio, and Wisconsin
Hyde Park Landfill – Remedial Action Assessment and Modeling
The Hyde Park Landfill is a hazardous waste landfill where approximately 20,000 tons of chlorinated compounds (primarily DNAPLs) were disposed in a fractured rock setting.
Denver Federal Center RCRA Facility Investigations (RFIs), Soil Remediation, and Regulatory Compliance
SSP&A has performed a wide variety of investigation and remediation activities at the Denver Federal Center (DFC) for U.S. General Services Administration (GSA) and other construction contractors working at the site in Colorado.
Regional Groundwater Flow Model for the Lower Nooksack River
SSP&A developed a groundwater flow model covering the western portion of the Washington Water Resources Inventory Area 1 in Whatcom County.
Water Resources Assessment, Lower Rio Grande Basin
SSP&A developed and calibrated a highly-detailed and refined historical groundwater flow model of the Lower Rio Grande Basin.
Geochemical and Hydrogeological Evaluation of Former Yerington Mine Site
For nearly a decade, SSP&A assisted with the development and implementation of long-term management of contaminated groundwater at the Anaconda Copper Mine Site in Lyon County, Nevada.
Castle East Mine
SSP&A was retained to develop a groundwater model to support a Category 3 Groundwater Permit to Take Water for Canada Silver Cobalt Works.
Lane Street Ground Water Contamination Site
SSP&A was retained by the U.S. Environmental Protection Agency (EPA) Region 5 to evaluate groundwater conditions at the site and to collect environmental media to support the microcosm studies.
OTIS AFB MMR Fate-and-Transport Analysis, Modeling, and Remedy Design
SSP&A developed and applied a 3D groundwater flow and contaminant transport model for the OTIS/MMR as part of remediation efforts at the site, and was subsequently retained to undertake wide-ranging data analysis, reporting, and remedy evaluation and optimization tasks.
PFAS Contamination in the Alabama River System
SSP&A provided expert services for four legal matters related to PFAS contamination in the Alabama River system in Georgia and Alabama.
Cape Cod Wastewater
In support of litigation, SSP&A evaluated the impacts to groundwater and surface water from a wastewater treatment system and septic leach field at a commercial complex in Harwich, Massachusetts.
Water Resources Assessment, Pecos River Basin
To assist the State in their management of water resources in the Carlsbad Basin, SSP&A developed a graphical user interface for evaluation of water rights transfer applications which integrates an existing superposition groundwater model and advanced applications of the Glover-Balmer and Theis equations for analysis of locations outside the active extents of the groundwater model.
Managed Aquifer Recharge Geochemical Evaluations in Basalts
SSP&A has designed sampling and analysis plans to determine groundwater and basalt chemistry, performed geochemical reactive transport modeling to predict the types and consequences of chemical reactions during ASR operations, and identified mitigation measures in cases where chemical incompatibilities between recharge water and basalt have been identified.
Assessing Potential Impacts of the Tulla Transfer Application
To address concerns regarding groundwater/surface-water interactions and potential Rio Grande Project Supply impacts, SSP&A provided expert hydrogeologic support in the evaluation of the Tulla Resources application and developed possible strategies for offsetting any potential impacts.
Bannister Federal Complex
Historical operations at the Bannister Federal Complex had led to extensive contamination with chlorinated solvents, PCBs, hexavalent chromium, and petroleum hydrocarbons.
Regional Municipality of Durham Groundwater Modeling Update
SSP&A was responsible for the local wellfield characterization for four communities including Cannington, Blackstock, Uxbridge, and Port Perry, in the Durham Region of Ontario, Canada.
Geochemical Analysis of Sources and Mechanisms of Groundwater Recharge, Saugus Formation
SSP&A evaluated geochemical data collected from depth-discrete intervals of a Saugus Formation pilot borehole.
Hanford Natural Resources Damage Assessment Upwelling Study
SSP&A was retained to evaluate the locations, timing, and quantities of historical contaminant discharges to the Columbia River to support a potential Natural Resource Damage Assessment (NRDA) claim.
Gold King Mine Release
SSP&A provided expert services for the State of New Mexico, New Mexico Environment Department (NMED), and members of the Navajo Nation in lawsuits related to a mine blowout at the Gold King Mine in Silverton, Colorado.
Fate and Transport Modeling of Fuel Additives
For over 10 years SSP&A consulted to the NYSDEC spills department, evaluating and simulating the fate and remediation of fuel spills at multiple sites.
The City of Muscle Shoals, Alabama, et al. v. 3M Company, et al.
SSP&A was retained by counsel for the Plaintiffs to evaluate and opine on PFAS contamination from the defendants’ facilities on the Tennessee River, as well as the effects of the ongoing remediation efforts occurring in and around Morgan County, Alabama on the City of Muscle Shoals and the Muscle Shoals Utility Board (MSUB).
Sparton Technology Remediation
SSP&A was retained by Sparton Technology, Inc., to assist in the development of a remedial plan, litigation support, and negotiations with federal, state, county and city regulatory authorities for its Former Coors Road facility in Albuquerque, New Mexico.
CenterPoint Oakland
SSP&A managed environmental risks during a multi-year, multi-phase project involving a 48-acre site at a former U.S. Army facility under consideration for re-development.
PG&E Eureka: Soil Remediation
SSP&A acted as the owner’s representative for PG&E, providing field oversight for a nine-month remediation project adjacent to Humboldt Bay.
