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.
1976
Performs Work at the First US EPA Superfund Site
Elia receives subcontract to perform containment construction for Love Canal's Central and Northern Sectors.
1979
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.
1993
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.
1995
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.
1996
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.
1996
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.
2001
Sevenson Returns to a Privately-Owned Company
Sevenson buys back public shares and returns to privately-owned company.
2002
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.
2004
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.
2009
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.
2012
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.
2017