Sevenson Timeline

Sevenson Environmental Services, Inc.'s roots go back to 1917. In that year, architect Albert Elia of Niagara Falls, New York, founded a general contracting business specializing in residential building construction.


Our Environmental Roots

Albert Elia Building Co., Inc. constructed a commercial hazardous waste landfill cell for SCA Services, Inc.


Performs Work at the First US EPA Superfund Site

Elia receives subcontract to perform containment construction for Love Canal's Central and Northern Sectors.


Awarded Contract to Construct First Permanent Treatment Facility at Superfund Site

New York State Department of Environmental Conservation awards Albert Elia Building Co., Inc., Design/Build contract for constructing the Love Canal leachate treatment unit, the first permanent treatment facility built at a Superfund site.

Read more 1980

Awarded First Remedial Action Project by a Responsible Party

Sevenson awarded its first remedial action project for a potentially responsible party (PRP) lead cleanup operation at the Velsicol Chemical Superfund Site, St. Louis, Michigan.

Read more 1981

Sevenson Awarded its First Remedial Action Contract by US Army Corps of Engineers (USACE)

Awarded first remedial action contract issued by USACE at Krysowaty Farm Superfund Site, Hillsborough Township, New Jersey. Since then, Sevenson has successfully executed hundreds of fixed-price and cost-reimbursable contracts and task orders at over 40 USACE-managed Superfund sites.

Read more 1985

Sevenson Awarded First Contract for Radiological Remediation

Sevenson awarded its first contract for radiological remediation under the Formally Utilized Site Remedial Action Program (FUSRAP) at the Lake Ontario Ordnance Works Site, Lewiston, New York.

Read more 1986

Sevenson Opens a Regional Office in PA; Undertakes Work in Puerto Rico

Sevenson opens a regional office in suburban Pittsburgh, Pennsylvania, to service growing client needs. Sevenson mobilizes equipment and personnel to Puerto Rico to undertake challenging RCRA closure, the first remedial action contract executed by a company outside the continental United States.

Read more 1987

Sevenson shares listed on NASDAQ

Sevenson completes initial public offering and lists shares on NASDAQ. Proceeds are used to increase working capital to support greater bonding capacity needed for the rapidly growing size and scope of projects.

Read more 1989

Sevenson Introduces Bio-Remediation as a New Service

Sevenson acquires the laboratory, technology and equipment of start-up bio-remediation firm, Waste Stream Technology. Lab capabilities are later broadened to include stabilization/solidification and dewatering treatability studies.

Read more 1989

Sevenson Opens Midwest Office

Sevenson opens office in Merrillville, Indiana, after acquiring technology and assets of Maecorp, a Chicago-based remedial action contractor which provided chemical treatment services using the proprietary MAECTITE™ process.


Sevenson Awarded First Long-Term Remedial Action Contract by US Army Corps of Engineers (USACE)

Sevenson awarded first of USACE's Pre-placed Remedial Action Contracts (PRACs) for USEPA Region 2. PRAC's objective was to expedite remediation of Superfund sites under federal government lead where no viable responsible parties were identified.


Sevenson Purchases its First Hydraulic Dredge

Sevenson purchases its first hydraulic dredge. Commits to addressing sediment dredging material handling and processing issues unique to this emerging field.


Sevenson Successfully Completes First Former Manufactured Gas Plant Site Remediation Project

Sevenson successfully completes first remediation project at a former manufactured gas plant (MGP) site. Sevenson has since completed MGP site remediation projects for numerous public utility companies.


Sevenson Awarded USEPA Region 2 Long-Term Remedial Action Contract

Sevenson awarded first USEPA Region 2 Long-Term Remedial Action Contract (LTRA) from USACE. Objectives included providing O&M and optimization services at permanent waste water treatment plants at Superfund sites managed by USACE on behalf of USEPA.


Sevenson Returns to a Privately-Owned Company

Sevenson buys back public shares and returns to privately-owned company.


Sevenson Awarded its First Design/Build Contract

Sevenson awarded its first Design/Build contract at a US Department of Energy facility, the Oak Ridge Natural Laboratory's Boneyard Burnyard Site, Tennessee.


Sevenson Responds to Time Critical Coal Ash Remedial Action Project

Requested to respond to Time Critical Remedial Action at the Emory River Coal Ash Recovery site in Kingston, Tennessee, where Sevenson hydraulically dredged and processed 2.5 million CY of fly ash over 22 months.


Sevenson Awarded Dredging Subcontract Under GLNPO

As a key team member, Sevenson performs all dredging, dewatering, and material processing services under the USEPA's first Great Lakes National Program Office remediation contract.


Sevenson Celebrates 100 Years in Business

To date, Sevenson has successfully completed over 1,400 projects throughout the US and Canada, including remedial action at 128 Superfund sites. Focus remains on providing best-in-class remediation services to industry, PRP groups, and public agencies.


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