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Water Resources Projects
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Contamination / Remediation Projects
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Litigation Support Projects
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Water Resources Projects
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Contamination / Remediation Projects
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Litigation Support Projects

The following representative projects highlight SSP&A’s multi-disciplinary specialty services that help clients address water-resources and environmental remediation challenges.

2024-11-21T17:13:37+00:00

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.

2024-11-21T18:15:38+00:00
Hanford Groundwater Model figure

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.

2024-11-21T16:27:39+00:00

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.

2024-11-21T18:05:36+00:00
Salt Basin Groundwater Model figure

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.

2024-11-21T17:28:39+00:00
Columbia River Gorge

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.

2024-11-21T17:35:24+00:00
Biggars Lane Landfill Operation Timeline chart

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.

2024-11-25T22:15:30+00:00
Bannister Federal Complex site photo & Groundwater magazine

Bannister Federal Complex

Historical operations at the Bannister Federal Complex had led to extensive contamination with chlorinated solvents, PCBs, hexavalent chromium, and petroleum hydrocarbons.

2024-11-21T16:53:58+00:00

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.

2024-11-21T18:09:00+00:00
Wilson Dam

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).

2024-11-21T17:48:26+00:00
Coronet Industries Site – Main Plant and Pond 1S

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.

2024-11-21T17:02:07+00:00

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.

2024-11-21T17:55:18+00:00
Sparton Technology Remediation

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.

2024-11-21T17:09:28+00:00

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.

2024-11-21T18:22:54+00:00

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.

2024-11-21T17:58:55+00:00
NMISC Water Resources Assessment, Pecos River Basin figure

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.

2024-11-21T17:46:08+00:00
West Lake Landfill Site RIM Figure

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

2024-11-21T16:22:35+00:00

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.

2024-11-21T22:26:58+00:00
Minnesota vs. 3M scenic

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.

2024-11-21T18:17:24+00:00

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.

2024-11-21T18:03:28+00:00
Gold King Mine Release

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.

2024-12-06T22:38:50+00:00
Texture2Par SVSIM Examples

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.

2024-11-21T16:44:54+00:00

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.

2024-11-21T23:10:28+00:00
3D figure showing the Columbia Basin

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.

2024-11-21T17:03:37+00:00

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.

2024-12-06T22:56:05+00:00
Tulla Transfer Application assessment figure

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.

2024-11-21T22:24:16+00:00
Groundwater Sampling at the Lane Street Site

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.

2024-11-21T17:11:01+00:00

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.

2024-11-21T17:50:49+00:00
Cape Cod Wastewater

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.