Project Experience

HTVFE System with Water Treatment for PFAS

GWTT was contracted to custom fabricate, install, and activate a High Vacuum Total Fluids Extraction (HVTFE) system for the treatment of PFAS impacted groundwater at a contaminated site in Massachusetts.

Build
Fabrication
O&M
Permanent Treatment
PFAS
System Design

Temporary Industrial pH Adjustment Wastewater Treatment System

GWTT was contracted to design, build, and install a temporary industrial pH adjustment wastewater treatment system at an industrial manufacturing facility in MA.

Build
Fabrication
Optimization
System Design

Landfill Leachate Modular Treatment System

GWTT was contracted to provide a 75 GPM program including engineering, procurement, fabrication, testing, delivery and installation, along with leachate pond collection equipment and piping, discharge install, and equipment startup and commissioning.

Build
Fabrication
Landfill Leachate
System Design

O&M of Solids-Handling Wastewater Treatment Plant

GWTT was awarded this contract to provide daily O&M services for an existing wastewater treatment facility.

O&M
Optimization

Tank Farm Historic Spill: Remediation System Rental

GWTT was contracted to design, build, and install a total fluids extraction and treatment system at an active tank farm.

Civil Work
Equipment Rental
Fabrication
Mobile / Temporary Treatment
Remedial Contracting
SVE / SSDS

Temporary Rental Water Treatment System

GWTT was contracted to design, supply, operate, and maintain a 450 GPM temporary water treatment system in support of dewatering activities at a highly visible highway-widening project in Virginia Beach, VA.

Build
Dewatering
Equipment Rental
Fabrication
O&M
System Design
VOCs

Municipal Water System Upgrade: PFAS Removal

GWTT was contracted by a Federal Government engineering consultant to construct a water treatment system to address a municipal drinking water well near a large military installation that was impacted by PFAS.

Build
Fabrication
PFAS
Remedial Contracting
System Design

PFAS Groundwater Treatment System (Maine)

GWTT was contracted to assist with design, build, and startup/prove out of PFAS treatment equipment to be installed and integrated into an existing permanent treatment system building at a former Navy base in Maine.

Build
Fabrication
O&M
Permanent Treatment
PFAS
Remedial Contracting
System Design

Biovent Pilot Study & Full-Scale Treatment System

GWTT was contracted to provide a short-term pilot study rental treatment system for the concept and design prove out of a biovent system.

Build
Fabrication
O&M
Permanent Treatment
Pilot Study

Customized Pipe Installation & Rooftop PFAS Treatment System

GWTT was contracted to build a rooftop stormwater collection and conveyance system, and a permanent water treatment system to recover & treat PFAS impacted stormwater at an industrial manufacturing facility in MA.

Build
Fabrication
Optimization
Permanent Treatment
Remedial Contracting
System Design

Oil Pipeline Spill Remediation: Water Treatment System

GWTT was contracted to design, construct, and operate a 1,500 GPM wastewater treatment system to remediate oil-contaminated groundwater during the repair of a broken pipeline and the construction of its replacement in Baltimore, MD.

Build
Fabrication
O&M
Remedial Contracting
System Design

Energy Center Rental

GWTT Provided equipment rental and O&M to an energy center located in NJ.

Build
Equipment Rental
O&M
System Design

Landfill Leachate Collection and Treatment System

GWTT was contracted to install a deep groundwater recovery system at a former landfill in New York. The system was designed to recover VOCs migrating from leachate into the down gradient groundwater.

Build
Fabrication
Landfill Leachate
Remedial Contracting
System Design

Emergency Response Spill Containment System

GWTT was tasked with designing, constructing, and operating a spill containment and treatment system to remediate a site impacted by a train derailment.

Build
Civil Work
Fabrication
Mobile / Temporary Treatment
System Design

Groundwater Treatment System: Chlorinated Solvents

GWTT was contracted to provide a 100 GPM temporary dewatering treatment system during excavation and construction of a 4-story underground parking garage.

Build
Dewatering
Equipment Rental
Mobile / Temporary Treatment
Remedial Contracting
System Design

Sub-Slab Depressurization System Installation

GWTT installed a sub-slab depressurization system in and actively operating 1-million-square-foot facility that was plagued with sub-slab soil vapor containing chlorinated solvents (PCE & TCE) for mitigation.

Build
Civil Work
O&M
Permanent Treatment
SVE / SSDS
System Design

Groundwater Recovery & Treatment System

GWTT was selected as the building and mechanical contractor for the design/build and installation of a groundwater recovery and treatment system.

Build
Civil Work
Fabrication
Permanent Treatment
Remedial Contracting
System Design

Hydraulic Control Treatment System

GWTT constructed a ground water extraction and treatment system in New Jersey designed to remediate groundwater contaminated with hexavalent chromium (Cr VI), dense non-aqueous phase liquid (DNAPL), and volatile organic compounds (VOCs) from a total of 42 hydraulic control wells installed within the confines of a slurry wall.

Build
Fabrication
O&M
Permanent Treatment
Remedial Contracting
System Design
VOCs

Self-Sustaining Treatment for Active Remediation (STAR) System

GWTT was selected to assist with the implementation of an innovative technology developed to remediate non-aqueous phase liquids (NAPLs) contamination using the principles of “self-sustaining smoldering,” or Self-Sustaining Treatment for Active Remediation (STAR).

Build
Fabrication
Remedial Contracting
System Design

In-Situ Chemical Oxidation of Dense Non-Aqueous Phase Liquid

GWTT was selected as part of the design/build team to construct an In-Situ Chemical Oxidation System (ISCO) for the remediation of subsurface dense non-aqueous phase liquid (DNAPL) contamination at a former chemical manufacturing facility in Newark, NJ.

Build
Permanent Treatment
Remedial Contracting
System Design

Temporary Iron Precipitation System: WetSep

GWTT was contracted to design and construct a temporary groundwater treatment system specifically targeting iron reduction at a former bulk oil storage facility in Fall River, Massachusetts.

Build
Equipment Rental
Fabrication
O&M
System Design

MGP Dredge Treatment System

GWTT was called to a former manufactured gas plant and petroleum storage facility in Utica, New York to treat groundwater during soil remediation activities, and water generated during dredging of contaminated sediments from the nearby harbor.

Build
Fabrication
MGP
O&M
Remedial Contracting
System Design

Oil & Water Separation Treatment System

GWTT designed, built, installed, and operated two 500 GPM oil/water separator treatment systems on a single project site in New York.

Build
Fabrication
O&M
System Design

Construction Activities Water Treatment System

GWTT incorporated the existing treatment system equipment into the newly designed system, which addressed the critical contaminants of concern from the influent water: total suspended solids (TSS), volatile organic compounds (VOCs), iron, and, in a later phase of the project, arsenic.

Build
Equipment Rental
O&M
Remedial Contracting

MGP Groundwater Treatment System

GWTT was called to a former manufactured gas plant and petroleum storage facility in Utica, New York, to treat groundwater during soil remediation activities.

Build
MGP
Mobile / Temporary Treatment
O&M
System Design

Groundwater Extraction Treatment System

The Former Curtiss Wright Aeronautical Testing Facility Groundwater Extraction, Treatment & Reinjection System (GWERS) was constructed in the early 1990’s.

Build
O&M
SVE / SSDS
System Design

MGP Sludge Dewatering and Water Treatment System

Former Manufactured Gas Plants (MGP) sites often contain mixtures of volatile and semi-volatile chemicals, as well as metals and cyanide at elevated concentrations.

Build
Fabrication
MGP
O&M
System Design

Pump & Treat System for Chlorinated Solvents & 1.4-Dioxane

GWTT was selected as the general contractor to construct a pump & treat system at an inactive industrial facility in Florida. The initial system was constructed for the treatment of chlorinated solvents in the localized groundwater, which were slowly migrating downgradient toward a major city production well.

Build
Remedial Contracting
System Design

Permanent Perched Groundwater Treatment System

GWTT was selected as part of the design/build team contracted to construct a perched groundwater remediation system for removal of arsenic and VOCs, as part of a large scale remediation project in New Jersey. GWTT was the general contractor for this project, with a construction contract of $1.5M.

Build
O&M
Permanent Treatment
Remedial Contracting
System Design
VOCs

Outage Wash Temporary Treatment System

GWTT designed, supplied, installed, and operated a temporary water treatment system for the treatment of precipitator and air preheater ash outage events.

Build
Fabrication
O&M
System Design

Coal Ash Pond Water Treatment

GWTT was originally contracted to design and build a 250 GPM temporary treatment system to reduce arsenic in the pumped interstitial water during the remediation of a fly ash pond in Kentucky. In addition, a separate 1,000 GPM sand filtration system was provided to reduce Total Suspended Solids (TSS) during unwatering of the pond.

Build
Coal Ash
System Design

Temporary Mercury Treatment System Rental

GWTT was contracted to assist with the design, mobilization, rental, and demobilization of a temporary treatment system to treat for mercury and pH adjustment at a superfund site in Virginia.

Build
Superfund
System Design

Chlorinated Solvents Groundwater Treatment System

GWTT was subcontracted for the installation of a groundwater extraction and treatment system at a site located in Union, New Jersey. The extraction system includes air operated recovery pumps installed in 40 wells, a submersible pump installed in a deep bedrock well, and a dual-phase extraction system.

Build
O&M
System Design

Ash Landfill Storm Water Temporary Treatment System

The ash landfill storm water temporary treatment system was installed to ensure that discharge permit limits were met for a broad range of constituents while a storm water management project was constructed.

Build
Mobile / Temporary Treatment
System Design

Coal Pile Runoff Treatment System

GWTT constructed the coal pile runoff treatment system based on client specifications, using pH adjustment and mechanical filtration for treatment. The coal pile runoff project was part of a larger project to treat and reroute low-volume wastewater due to closure of the ash ponds.

Build
System Design

Recirculation Water Conveyance and Injection System: Chlorinated Solvents

GWTT was contracted to provide remediation construction services at a former paint manufacturing site in support of an existing water treatment plant for the contamination of chlorinated solvents (TCE and PCE).

Build
Fabrication
O&M
Optimization
System Design

Groundwater Recovery System Optimization and Upgrade

GWTT was contracted to procure and modify a deep groundwater recovery system piping, pumps, and electrical at a Pharma site in North Haven Connecticut.

Dewatering
Equipment Rental
Optimization

Landfill Dewatering and Water Treatment System

GWTT was contracted to design, install, operate, and maintain two dewatering systems and a 325-GPM temporary water treatment system in support of the dewatering activities at a highly visible DEP landfill transformation project.

Dewatering
Equipment Rental
O&M
System Design

Construction Dewatering and Treatment for Suspended Solids, VOCs

This project included a high-rise residential tower with a basement in a geologically challenging environment. Two interior elevator pits were significantly below the general subgrade.

Dewatering
O&M
Remedial Contracting

CCR Ash Basin Dewatering & Treatment System

GWTT was contracted to design, procure, build, install, commission, and operate and maintain a site-specific Wastewater Treatment System (WWTS) to facilitate the treatment and discharging of compliant water from a large coal ash basin located in North Carolina.

Dewatering
O&M
System Design

PFAS Treatment System Integration

GWTT was engaged by a federal contracting firm to design and construct a water treatment system to address multiple municipal drinking water wells near a large military installation that was impacted by PFAS contamination.

Build
Fabrication
O&M
PFAS
Remedial Contracting
System Design

Groundwater Capture System Upgrade and O&M

GWTT was selected to provide Operation & Maintenance (O&M) services for an existing groundwater capture system located in Pennsylvania.

All
NAPL
O&M
Optimization

CCR Ash Pond Treatment for Contact Surface and Pore Water

GWTT was tasked with providing a water treatment system to assist the client in reducing the contact surface and pore water of several coal ash ponds at one of their power-generating sites.

All
Coal Ash
O&M
Remedial Contracting

Groundwater Collection & Treatment System

GWTT was contracted to build and start up a groundwater collection and treatment system at a former electronics manufacturing facility in Hanover, MD.

All
Equipment Rental
Remedial Contracting

1,200-LF Vacuum Wellpoint Dewatering System

This dewatering project required a 1,200-LF wellpoint dewatering system to be installed in suspended segments to consider a staged excavation and remediation across the site and also required excavation to depths of 30’ from the surface within a 24’ static water table.

All
Dewatering
Equipment Rental

PFAS Water Treatment System

All
PFAS

Permanent Groundwater Treatment System

GWTT was contracted to construct a groundwater treatment system at a large Superfund site located in New Jersey. The system has a capacity of 500 GPM and is capable of treating a wide range of metals, VOCs, and SVOCs.

All
Equipment Rental
Remedial Contracting
Superfund
System Design

LNAPL Recovery / Groundwater Treatment System O&M

GWTT was contracted to take over operations & maintenance from a prior service provider at a former petroleum processing site in Pennsylvania. GWTT staff worked with the prior provider on a carefully planned and executed transition of operational oversight, including an extensive review of historical system operations data.

All
NAPL
O&M

Ash Landfill Leachate Treatment System

GWTT was contracted to design, build, start up, and commission a 25-GPM leachate treatment system. Our bench-scale treatability test indicated that ozone out-performed other oxidants to convert the Arsenite into Arsenate for subsequent chemical precipitation.

All
Coal Ash
Landfill Leachate
Permanent Treatment

Coal Ash Pond Dewatering & Water Treatment

4,000 GPM treatment system consists of coagulation / flocculation, pH adjustment, a 250,000-gallon clarifier, mechanical filtration, and eight 10,000-lb media vessels.

Coal Ash
Dewatering
Fabrication
O&M
Optimization
Remedial Contracting
System Design

PFAS Groundwater Treatment System

GWTT served as project manager for the construction of a 200 GPM capacity groundwater extraction and treatment system at a former U.S. Air Force facility in Portsmouth, NH. The site is a former fire-fighting training area where aqueous film-forming foam (AFFF) containing PFAS compounds was used for many years.

All
Equipment Rental
PFAS
Remedial Contracting