Projects

From highly scientific studies to large construction projects, our staff has extensive experience, the latest tools and technologies, and dedication to client service.

Our mission is to help clients succeed through delivering exceptional service and best-value solutions for their endeavors involving the environment, natural resources, and infrastructure.

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Projects

Focused Feasibility Study Remedial Action Plan Development and Implementation

Focused Feasibility Study Remedial Action Plan Development and Implementation

Phytotechnology Feasibility Evaluation, Design, and Implementation for Mixed VOC / 1,4-Dioxane in Saprolite and Bedrock Groundwater

Phytotechnology Feasibility Evaluation, Design, and Implementation for Mixed VOC / 1,4-Dioxane in Saprolite and Bedrock Groundwater

Phytotechnology Remedial Design and Implementation of Carbon Tetrachloride in Glacial Till

Phytotechnology Remedial Design and Implementation of Carbon Tetrachloride in Glacial Till

Field Demonstration to Enhance PFAS Degradation and Mass Removal using Thermally-Enhanced Low-pH ISCO followed by Pump-and-Treat

Field Demonstration to Enhance PFAS Degradation and Mass Removal using Thermally-Enhanced Low-pH ISCO followed by Pump-and-Treat

Wastewater Treatment Expansion

Wastewater Treatment Expansion

Risk Assessment and Site Monitoring Associated with Disposal of Ground Calcium Carbonate Processing Residuals

Geosyntec retrofitted the Academy Museum of Motion Pictures, within the City of Los Angeles Methane Zone, with Level V methane mitigation.

Methane Mitigation for a Historical Building Retrofit

Launch Complex 39B

Launch Complex 39B

Decommissioning and Disposal of Former Rare Earth Processing Facility

Decommissioning and Disposal of Former Rare Earth Processing Facility

Slope Stability Evaluation for Film Production Location

Slope Stability Evaluation for Film Production Location

Boone Dam 3-D Geospatial Model

Boone Dam 3-D Geospatial Model

Site C Dam Compilation and Visualization Grouting and D-Wall Panel Data

Site C Dam Compilation and Visualization Grouting and D-Wall Panel Data

Chickamauga Lock Instrumentation and Data Management

Chickamauga Lock Instrumentation and Data Management

Folsom Dam Data Import and Progress Drawings

Folsom Dam Data Import and Progress Drawings

Rough River Dam GIS Application

Rough River Dam GIS Application

Bolivar Dam Seepage Barrier Wall Construction Data Management

Bolivar Dam Seepage Barrier Wall Construction Data Management

3-Dimensional Anchor Visualization

Bluestone Dam Interactive 3-Dimensional Model Development

Geosyntec’s deployment of tools to manage and visualize all project data, including instrumentation data; data associated with barrier wall construction elements; verticality measurements; and more, give the client and other project team members’ immediate access to key project performance metrics.

Wolf Creek Dam Data Rehabilitation Data Management

Chickamauga Lock and Dam - GroutTracker Developer

Chickamauga Lock and Dam - GroutTracker Developer

Center Hill Dam Data Management and Visualization

Center Hill Dam Data Management and Visualization

Herbert Hoover Dike Rehabilitation - “WallTracker”

Herbert Hoover Dike Rehabilitation - “WallTracker”

Candlestick Point / Hunters Point Naval Shipyard

Candlestick Point / Hunters Point Naval Shipyard

Rendering of Alta La Jolla Phase 2 design

La Jolla Alta Channel Repair and Geotechnical Stability Project

Geosyntec led the design and implementation of the first rigorous field test of acoustic vibration for in situ treatment of dense nonaqueous phase liquids.

In Situ Alkaline Hydrolysis of Organophosphorus Pesticides Enhanced by Acoustic Vibration and Surfactant Flushing

Geosyntec led the design and implementation of the first rigorous pilot test of sequenced ISCO-bioremediation of chlorinated solvent DNAPL in Denmark.

ISCO and Sequenced ISCO-Bioremediation for Remediation of Mixed Chlorinated Solvent DNAPL and Veterinary Antibiotics

The Danish government retained Geosyntec for technical expertise regarding cleanup of legacy contamination at wood treatment sites

Chromated Copper Arsenate (CCA) Wood Treatment Sites State-of-the-Practice Review of Remediation Technologies

Successful Full Scale Application of the STAR Technology to Clean Up a Former Coal Tar Facility in New Jersey

Successful Full Scale Application of the STAR Technology to Clean Up a Former Coal Tar Facility in New Jersey

Vapor monitoring well

Vapor Intrusion Assessment Near a Residential Development in United Kingdom

By assessing case studies, Geosyntec tailored development of tools for SITA site operators and environmental managers to use for data management, decision making, and analysis of aftercare conditions.

Evaluating Functional Stability and Completion of Landfill Aftercare in France, Italy, and the UK

At this highly contaminated pharmaceutical waste disposal site, Geosyntec led the design and implementation of the first rigorous pilot test of enhanced in situ bioremediation of chlorinated solvent DNAPL in Denmark.

Chlorinated Solvent DNAPL Bioremediation Pilot Test Demonstration in Denmark

Quantitative soil vapor survey output used to target subsequent intrusive investigations

Remedial Delineation and Feasibility Studies for a Manufacturing Site in Dublin

Geosyntec led the design and implementation of the first rigorous field test of acoustic vibration for in situ treatment of dense nonaqueous phase liquids.

Pilot Demonstration of In Situ Alkaline Hydrolysis of Organophosphorus Pesticides in Denmark

$A topographic survey design was used to measure ground heave and radius of influence during hydraulic fracturing to emplace bioactive fractures for stimulating in situ dechlorination of chlorinated solvents in low-permeability clay till.$

Pilot Test of Bioremediation via Hydraulic Fracturing of Clay Till In Denmark

Geosyntec led the design of this sheet-piled test cell for evaluating in situ remediation of DNAPL at a former manufacturing plant

Enhanced In Situ Bioremediation of a DNAPL Source Area in United Kingdom

Geosyntec directed the first rigorous field test of an innovative technology (EK-BIO) using an induced electric field to deliver bioremediation reagents.

Electrokinetic-Enhanced Bioremediation of Chlorinated Solvents Technology Evaluation for Source Area Remediation in Clay Till in Denmark

Geosyntec designed and led the first rigorous demonstration of enhanced reductive dechlorination of chlorinated solvents in Denmark.

Bioremediation of Chloroethenes via Groundwater Recirculation Field Demonstration in Denmark

$Geosyntec provided expert technical advice on the investigation of a dense non-aqueous phase liquid (DNAPL) source zone in fractured till and bedrock.$

Delineating the Distribution of Chlorinated Solvent DNAPL in Fractured Till and Bedrock at a Danish Megasite

Geosyntec designed and implemented a pilot test of jet injection of mZVI and nZVI for the remediation of chlorinated solvents diffused into dense clay soil.

Jet Injection of Zero Valent Iron into Glacial Clay Till Pilot Test Demonstration in Denmark

Geosyntec’s recommended ERD remedy is expected to save $2 million relative to operation of an existing pump-and-treat system.

In Situ Bioremediation of Chlorinated Solvents in Frankfurt, Germany

Brominated Pesticide Structure

Screening Matrix for Pesticide Treatment Alternatives in France

EVO Injection Manifold

Enhanced In Situ Bioremediation Biobarrier to Treat Chlorinated Ethenes in Switzerland

The Geosyntec-CAT Alliance team assisted the former owner of a complex manufacturing facility in developing environmental liability transfer options for this site in the Netherlands.

Environmental Liability Transfer Assistance at an Active Manufacturing Facility in The Netherlands

Geosyntec played a vital role in the direction and writing of the first national guidance document for the remediation of chlorinated solvents in Sweden.

Swedish National Guidance Manual on Chlorinated Solvent Remediation

Geosyntec co-authored the first guidance manual in Scandinavia for the use of bioremediation to treat chlorinated solvents in groundwater, like this plume under a residential neighborhood.

Guidance Manual for Anaerobic Bioremediation of Chlorinated Solvents in Groundwater in Denmark

Geosyntec played an important role in identifying and demonstrating innovative methodologies to remediate one of the most contaminated pesticide disposal sites in the world.

Treatment of Organophosphorous Pesticides by Chemical Oxidation and Zero Valent Iron in Denmark

Geosyntec’s Ph. I and II site assessments, vapor intrusion assessment, and human health risk assessment helped our client prepare a property in France for sale.

Site Investigation at a Closed Manufacturing Facility Lomazzo, Italy

Geosyntec assisted in the design and implementation of the first use of first bioaugmentation in Sweden for in situ treatment of chlorinated solvents in groundwater.

Bioaugmentation Pilot Test for Chlorinated Solvent Impacts in Sweden

The Danish government sought out Geosyntec’s experience in North America to apply to the unusual combinations of groundwater contaminants underlying this North Sea coastal site.

Feasibility Study and Treatability Testing for a Shoreline Site Impacted by Pharmaceutical Manufacturing Wastes in Denmark

Geosyntec worked as part of a select team to develop a national guidance manual for Sweden on the use of bioavailabality as part of the environmental risk assessment process.

Development of National Guidance Manual on Bioavailability Assessment in Sweden

Geosyntec and our team members implemented a bioremediation remedy that allows manufacturing operations to continue uninterrupted.

In Situ Bioremediation of Trichloroethene and Hexavalent Chromium in Denmark

This chlorinated solvent bioremediation project is the first such field application of KB-1® in Europe.

Biostimulation and Bioaugmentation for Passive In Situ Remediation of Chlorinated Solvents in Denmark

The underground construction monitoring network with station outlines and real time data updates of one of the Crossrail stations.

Underground Construction Information Management System in London

The Home Depot in Burbank, California was granted full regulatory closure (no further action determination) following the successful remediation of the site’s contaminated soil and groundwater

Brownfield Redevelopment for Home Depot in Burbank, California

Geosyntec’s Ph. I and II site assessments, vapor intrusion assessment, and human health risk assessment helped our client prepare a property in France for sale.

Site Investigation of a Closed Manufacturing Facility in France

Geosyntec is assisting the client with closure design of a fly ash pond including lowering of a high hazard dam, dewatering, and management of total suspended solids during construction

Design and Permitting for Closure of a Fly Ash Reservoir High Hazard Dam Modification

Geosyntec supported our client’s fast-turnaround project to construct a 130-car rail line extension atop a closed ash pond.

Foundation Design for Rail Line Extension Atop Closed Coal Ash Pond

Geosyntec provided four methods to mitigate the slopes at a fly ash disposal basin, which resulted in an estimated 50% savings in potential construction costs.

Slope Remediation Strategy and Implementation at a Fly Ash Disposal Basin

Geosyntec saved Duke significant costs by modifying a treatment pond instead of designing a wastewater treatment system to address nickel discharges to groundwater.

Design and Implementation of Nickel IWW Treatment to Reduce Groundwater Impact

Geosyntec authored three documents to provide guidance related to CCRs and ponds such as that shown above.

Coal Combustion Residuals Pond Closure Guidance Documents

On-site active coal combustion byproducts storage area.

Site Characterization Studies for Two Coal Combustion Byproduct Storage Facilities

Geosyntec pioneered a field verification methodology for the assessment and removal of coal combustion products.

Rapid Assessment and Removal of Coal Combustion Products JEA St. Johns River Power Park Area II Landfill

Tennessee Valley Authority's Kingston Fossil Plant

Coal Combustion Residuals Management Plans - Kingston Fossil Plant

Geosyntec is assisting the client with facility upgrades to address existing coal ash disposal and wastewater treatment and prepare for changes to federal regulations.

Design and Permitting for Coal Combustion Residuals Requirements and Effluent Limitation Guidelines

An extractive quantum cascade laser system provided field measurements at a selective catalytic reduction exhaust duct.

Continuous Measurement of Flue Gas SO3 Concentrations for Real-Time Monitoring of Process Changes

Geosyntec evaluated portable, real-time flue gas mercury monitoring options, and then integrated a complete monitoring package into the plant.

Evaluation of Process Monitors and Mercury Mitigation Technologies to Reduce Mercury Stack Emissions

Geosyntec provided Stack Testing and Oversight

Sulfur Trioxide and Sulfuric Acid Flue Gas Testing

Geosyntec provided services to TVA River Operations, such as unsteady hydraulic modeling, to develop flood inundation maps used for Emergency Action Plan updates.

Emergency Action Plan Flood Inundation Project for the Tennessee Valley Authority (TVA)

Geosyntec helped our client overcome significant technical challenges to design and permit an expansion of a flue gas desulfurization waste landfill.

Design and Permitting of a Flue Gas Desulfurization Residuals Waste Landfill Over an Existing Ash Pond

At the LCP Site, Geosyntec applied an innovative combination of materials handling techniques and on-site analytical services to minimize off-site disposal costs and conditioning requirements.

Marsh Sediment Removal Action and Ecological Risk Assessment, Brunswick, Georgia

Geosyntec developed a cost-effective sheet pile wall system that incorporated MSE erosion protection features (gabions) to withstand extreme temperatures, storm-induced wave loadings, and earthquakes.

Design and Build of Shoreline Sheet Pile Wall for Groundwater Flow Control

The final closure of the OSDF cells coincided with the completion of site restoration activities at this former Cold War nuclear materials processing site.

Onsite Disposal Facility for Low-level Radioactive Wastes from Fernald D&D Program

Geosyntec worked with We Energies at their Port Washington Generating Station to efficiently remove and manage tunnel sediments.

Sediment-Related Projects at a Gas-Fired Energy Plant, Port Washington, Wisconsin

Geosyntec led a team that conducted safety reviews and potential failure mode analyses reviews of four dams, three of which had suspected seismic deficiencies.

Dam Safety Reviews and Potential Failure Mode Analysis

Geosyntec's human health risk assessment of the Chicago Waterways System is a critical component to ensuring the continued safe recreational use of this important natural resource.

Public Health Risk Assessment in Support of Use Attainability Analysis in Chicago Waterways

Geosyntec developed an easy-to-use interactive recreational and environmental resource map for the entire length of the Shawsheen River.

Shawsheen River Interactive Recreational Map

Geosyntec has provided a wide range of engineering, design, and construction services at the Lopez Canyon Landfill since 1992.

Broad Scope Solid Waste Management Services at the Lopez Canyon Sanitary Landfill

Geosyntec is providing environmental and geotechnical engineering services to transform the closed Fresh Kills Landfill into a recreation destination for New Yorkers of the 21st century.

Environmental and Geotechnical Engineering Services for the Fresh Kills Landfill to Lifescape Project

Geosyntec overcame the challenges of soft, compressible subsurface materials with an innovative foundation improvement technique that saved DSWA almost $100 million

Innovative Landfill Foundation Improvement Technique at the Cherry Island Landfill Allows a Major Vertical Expansion

The proximity of this site to nearby residential neighborhoods has made completion of the RI/FS and site cleanup a high priority.

Nuclear Metals, Inc. Superfund Site Remedial Investigation and Feasibility Study

Geosyntec worked with the Robins AFB team to test paint system modifications and validate potential savings including avoided environmental and waste disposal costs.

Pollution Prevention to Reduce Maintenance Costs and Emissions at Robins AFB

Geosyntec worked hand-in-hand with GSA's business managers to develop an EMS that not only meets compliance requirements but also generates cost saving opportunities for the government.

Environmental Management System for GSA Denver Federal Center

The lower reaches of the Town Line Brook watershed, showing some of the urban resources at risk of damage from flooding.

Town Line Brook Stormwater Management Planning and Design

Geosyntec designed and implemented several LID techniques at Silver Lake, such as porous pavers and this newly planted bioswale.

Silver Lake LID Demonstration Project

Geosyntec water resource specialists and ecologists conducted 16 individual stream assessments as part of an overall study of the Chicopee River watershed.

Chicopee River Watershed Assessment

Low impact development design techniques, such as this vegetated swale, are helping to prevent contaminated stormwater runoff from entering Plymouth Harbor.

Low Impact Development Stormwater Designed to Improve Water Quality in Shellfish Habitat in Plymouth Harbor

Geosyntec developed a conceptual model of vapor fate and transport processes to allow development of an assessment and mitigation strategy for properties adjacent to the site.

Risk Assessment of Potential Subsurface Vapor Intrusion Adjacent to a Manufacturing Plant in the United Kingdom

Soil gas probes were installed adjacent to residences as part of the TriHydro program to assess the presence of vapors.

Analysis of Subsurface Vapor Intrusion to Indoor Air and Background Conditions near a Former Refinery in Ohio

Geosyntec provided site assessment, Florida Brownfields program enrollment, design, and permitting services to fast-track construction start dates to meet developer's obligations with tenants.

Engineering, Permitting, and Construction Services for Biscayne Commons Brownfields Site Redevelopment

The Danish government sought out Geosyntec's experience in North America to apply to the unusual combinations of groundwater contaminants underlying this North Sea coastal site.

Feasibility Study and Treatability Testing for a Danish North Sea Shoreline Site Impacted by Pharmaceutical and Related Wastes

Geosyntec designed, constructed, and operated a full-scale enhanced bioaugmentation system on-site to address groundwater containing PCE and TCE at this former manufacturing site.

Enhanced In Situ Bioremediation of Groundwater Impacted by Chlorinated Solvents at Intensol, LLC Site

Geosyntec's use of two first-to-field applications of bioaugmentation technologies may allow replacement of pump and treat for TCE-impacted groundwater at this site.

Innovative Application of Bioaugmentation in a Fractured Rock Environment at New Jersey Naval Air Warfare Center

The Geosyntec-designed website replaced a 4-inch binder with a content-rich, searchable resource for Massachusetts agencies, developers, and stakeholders involved in stormwater management.

Massachusetts DEP Nonpoint Source Pollution Guidance Manual and Technology Assessment Resource Tool

Design and installation of a vapor protection and detection system allowed productive redevelopment of the closed Rossman's Landfill as a Home Depot retail site.

Engineered Vapor Protection System Allows Brownfields Redevelopment of Closed Landfill as Home Depot Retail Site

Improved tidal flow access and sediment removal are key elements to Geosyntec's revitalization and restoration plan for the Ballard Street Salt Marsh.

Ballard Street Salt Marsh Restoration

Geosyntec's approach allows reuse of an existing fly ash reservoir as an FGD residuals landfill; thereby, avoiding the conversion of other land uses to long-term waste disposal.

Design of FGD Residuals Disposal Facility over Existing Fly Ash Reservoir for American Electric Power Cardinal Plant

Geosyntec's approach provided Crescent with significant savings during infrastructure construction and avoided expensive schedule delays due to the presence of residuals and impacted soils.

Environmental Services for Potomac Yard Redevelopment Project

Geosyntec served as the environmental compliance and geotechnical consultant of the AT&T network build-out team for more than 600 sites in Alabama, Florida, and Mississippi.

Environmental Compliance Program Support to AT&T Wireless Network

Ford relied on Geosyntec to revise its existing EMS to accommodate line shutdowns as the facility retooled for initiation of flexible manufacturing processes and new hybrid-powered products.

EMS/Environmental Compliance Auditing and Plant Decommissioning Support to Ford Canada

Geosyntec designed and installed a first-of-its-kind system to bioremediate chlorinated solvents in wetland seeps, resulting in 99% effectiveness within the first year.

Targeted Exposure-Point Treatment of Impacted Groundwater Seeps into Tidal Wetlands at Aberdeen Proving Ground

Geosyntec used an LC-34 facility above the TCE-impacted groundwater test plot to install and operate ethanol amendment and KB-1 augmentation injection equipment.

Biodegradation of DNAPLs through Bioaugmentation Verified at NASA Kennedy Space Center LC 34 Site

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