Case Studies

MacKenzie Case Study 01

Montclair Glen Ridge Radium Sites
Montclair, New Jersey

The Montclair/Glenn Ridge Radium Sites in Essex County New Jersey were contaminated in the early 1900s by a nearby factory that manufactured luminescent watch dials. MacKenzie was contracted by the US Army Corps of Engineers to provide site remediation services of the five-acre Barrows Field Site, a contaminated ball field in the middle of a residential neighborhood.

MacKenzie provided environmental engineering, design and remediation services to remove the radium contaminated soil and restore the site as a neighborhood ball field. Approximately 100,000 cubic yards of radium-contaminated soil were removed and transported by rail to the Envirocare landfill in Clive Utah.

In addition to the successful completion of the pre-designed remedial action, MacKenzie provided value-engineering services to the U.S. EPA, regarding volume reduction of the contaminated material using the proprietary Segmented Gate System by Eberline Services Inc.

The contract for Barrows Field was part of one of the most expensive Superfund remedial actions undertaken by the U.S. EPA for a single site. In addition to completion of the scope of work, and the final environmental sampling and characterization of the site, MacKenzie played an integral role in public relations and community outreach. Our health physics field technicians monitored the site perimeter and provided weekly updates to the citizen groups involved in the cleanup.

MacKenzie Case Study 02

Salem Acres Superfund Site
Salem, Massachusetts

The Salem Acres Superfund Site contained over 100,000 cubic yards of hazardous sludge and soils in onsite lagoons. Contaminants of concern included PCBs, heavy metals, PAHs, dioxins, furans, and VOCs. MacKenzie was contracted by the South Essex Sewage District to remediate the entire site to Massachusetts regulatory standards. Under the direction of the U.S. EPA and the MA DEP, MacKenzie provided engineering and remedial construction services. In addition to the removal of all hazardous waste from the site, MacKenzie treated over 3 million gallons of contaminated surface and groundwater.

MacKenzie Case Study 03

McGillis & Gibbs Superfund Site
Minneapolis, Minnesota

MacKenzie completed the remediation of the McGillis & Gibbs Superfund Site as a prime contractor to the U.S. EPA. The site was an old pole wood treatment facility just north of Minneapolis. MacKenzie provided environmental engineering and construction services for the remediation of soils and groundwater throughout the site to Minnesota regulatory standards. Soil was transported to Subtitle C landfills using rail. An advanced groundwater extraction and treatment system was constructed and operated as part of the cleanup.

MacKenzie Case Study 04

Li Tungsten Superfund Site
Glen Cove, New York

MacKenzie completed the remediation of the Li Tungsten Superfund Site as a prime contractor to the U.S. EPA. The site was contaminated by radioactive tungsten ore- residue and debris. MacKenzie consolidated and provided secure disposal of approximately 8,000 cubic yards of radioactive contaminated material from various areas throughout the 26-acre site. In addition to the decontamination and remedial activities, MacKenzie contained the entire site with a structural marine bulkhead.

MacKenzie Case Study 05

Sayerville Landfill Superfund Site
Sayerville, New Jersey

MacKenzie completed the remedial action at the Sayerville Superfund Site as a prime contractor to the U.S. EPA. The site was a former landfill, which had received large quantities of RCRA hazardous and TSCA toxic materials for years. The scope of work included a complete RCRA cap on the old landfill, and the excavation of known dumping areas of hazardous waste. As part of the remediation, MacKenzie excavated, characterized and disposed of hundreds of 55-gallon drums of hazardous waste. The scope of work also included wetland restoration and replication, as well as continuous monitoring of the landfill for contaminant migration.

MacKenzie Case Study 06

Loring Air Force Base Closure
Presque Isle, Maine

Loring Air Force Base was shut down in the early 1990s as part of the base closure and realignment process. MacKenzie provided environmental consulting, engineering and remedial construction services to the US Army Corps of engineers in association with the closure of the base over a four-year period assisting in the return of the 9,000-acre site to non-military use. Under various contracts, MacKenzie completed decontamination and decommissioning of structures and remediation of soils and groundwater.

The project included the dismantling and removal of the entire jet fuel storage and distribution system including the demolition of pump houses, twenty 50,000-gallon tanks and miles of jet fuel piping. MacKenzie provided onsite remediation of jet fuel contaminated soils through the use of soil vapor extraction systems.

MacKenzie Case Study 07

Fort Bliss Oil and Pesticide Pits
El Paso, Texas

As prime contractor to the U.S. Army Corps of Engineers, MacKenzie completed the remediation of five separate Solid Waste Management Units contaminated with chlordane, aldrin, DDD, DDE, DDT, chlorinated compounds, PAHS, and heavy metals. All work was performed under Level B personal protective measures.

MacKenzie mobilized a transportable direct fired thermal desorption unit at the site and successfully treated over 30,000 tons of contaminated soils to Texas regulatory standards. Onsite treatment of the soils by MacKenzie resulted in significant cost savings to the Federal government. In addition to the remedial construction activities, MacKenzie also provided final site characterization and closure services.

MacKenzie Case Study 08

Former Scovill Brass Industrial Facility
Waterbury, Connecticut

The former Scovill Brass Industrial Facility was comprised of a 96-acre site contaminated from years of industrial use. As part of a $50 million dollar redevelopment project, the site required remediation of the buildings, soil and groundwater to regulatory standards.

As the prime environmental contractor, MacKenzie managed the remediation of the entire site within an accelerated schedule to facilitate the construction of the Town Center Shopping Mall. As one of the largest Brownfield redevelopments in Connecticut, the project generated extensive regulatory involvement and public awareness.

MacKenzie coordinated its remedial activities with those of the development contractor throughout the life of the project. Over 150,000 tons of contaminated soil was removed during the site cleanup. MacKenzie employed innovative soil remediation technologies to lower remedial costs, including the use of a molecular bonding agent to stabilize heavy metal contaminated soil for non-hazardous disposal, and vapor extraction to lower VOC levels to non hazardous.

MacKenzie Case Study 09

Medical City Brownfield Site
Worcester, Massachusetts

The Worcester Medical City project consisted of the environmental restoration of 42 commercial and industrial properties comprising 25 acres in the center of the second largest city in New England. As prime remedial construction contractor, MacKenzie performed the remedial actions to regulatory standards on a site-by-site basis. MacKenzie provided engineering and construction services to the Worcester Redevelopment Authority on this large scale Brownfield redevelopment.

MacKenzie designed and employed various on site remedial technologies to lower the overall remedial costs. Technologies employed included thermal desorption of VOC and petroleum contaminated soils, stabilization of lead contaminated soils, and vapor extraction of VOC contaminated soils.

MacKenzie Case Study 10

Natick RUST Remediation Program
Natick, Massachusetts

The Natick Residential Underground Storage Tank (RUST) Program was a first of its kind residential portfolio remedial action. Through a special fund provided by the U.S. EPA, MA DEP and Massachusetts Office of Community Development, grants were established to assist over 500 homeowners, with the removal of their heating oil UST and resulting contamination issues. The fund limited the potential exposure of any individual homeowner by funding remedial action over an established cap. The program was meant to serve as a prototype project for numerous communities in similar situations across the nation.

As prime contractor, MacKenzie managed the program, which included UST removal at over 500 home sites and remedial action to regulatory standards at approximately 200 sites. Each site was restored to its original condition. Many sites required extensive property restoration including foundations, driveways, decks, etc.

MacKenzie played an integral role in community relations and progress updates. Project scheduling was of utmost importance considering the invasive nature of such a project on an active residential community.

MacKenzie Case Study 11

Continental Airlines Terminal and Hanger Remediation
Newark and LaGuardia Airports

MacKenzie has been providing environmental services to the nation’s largest airlines since the early 1990s. As the first environmental consulting member of the Airports Consulting Council, MacKenzie established a reputation with airline facility managers as an experienced environmental consulting engineering firm.

One such client was Continental Airlines, where MacKenzie designed and managed a variety of remedial action projects at facilities throughout the NY and NJ area. From UST and contaminated soil removal to installation of groundwater pump and treatment systems, MacKenzie provided consulting and remediation field services at terminal and hangar facilities. MacKenzie designed and managed large-scale asbestos abatement projects at LaGuardia and Newark airports under occupied conditions. MacKenzie continuously monitored active terminal facilities throughout all work activities to ensure passenger safety in the terminals.