Our History

In January 1999, the founding members of Sovereign Consulting Inc. pursued a shared vision of a new environmental consulting firm where financial strength, dedication to clients, and commitment to employees created a winning company. Their goal was to foster a singular corporate culture which encourages outstanding project performance through teamwork, winning, hard work, commitment to clients, and mutual respect. Sovereign set out to be the best place to work for the best people in the environmental industry.

Within 10 years, Sovereign grew to 10 times its original size without acquisition or merger. What started as 19 environmental professionals in one office is now a company of more than 200 employees spread across 15 offices in 10 states, earning more than $135M in revenue over the last 3 years.


Sovereign opens its doors on January 4, 1999 in Robbinsville, NJ.


Sovereign opens second office in Parsippany, NJ.


Sovereign opens offices in CT and western MA.


Sovereign recognized by Dun & Bradstreet / Entrepreneur magazine as one of the fastest growing businesses for 3rd consecutive year.


Sovereign begins its first Gulf Coast project in Axis, AL.


Sovereign begins work at a major client's divested refinery in southeastern PA.


Sovereign wins first federal prime contract with the U. S. Navy and 3 more with the U. S. Navy, U. S. Military Academy, and U. S. Army

Sovereign opens office in Virginia Beach, VA.


Sovereign wins environmental services bid for Shell Oil Products U. S. to become one of Shell's 6 primary U. S. environmental services contractors.

Sovereign opens offices in Edgewood, MD, eastern MA, Cherry Hill, NJ, Long Island, NY, and Cranberry Township, PA.

Sovereign wins environmental scoping services bid for 60 retail stations in PA for a major client.


Sovereign awarded $225M contract for construction services at Aberdeen Proving Ground for U. S. Army.


Sovereign ranked as Top Environmental Consultant for Shell Oil Products U. S. for performance in 2007.

Sovereign opens office in Burlington, NJ.


Sovereign opens first Gulf Coast office in Mobile, AL and Delaware Valley office in Exton, PA.

Sovereign wins first contract with U. S. Army Corps of Engineers.


Sovereign wins $30M remedial action operations & long term management contract with U. S. Navy.

Sovereign ranks at #5 on the Zweig Letter's 150 Hot Firms of 2010.


Sovereign opens first Pacific Northwestern office in Seattle, WA.


Sovereign opens an office in Concord, NH.


Sovereign opens first Rockies office in Denver, CO.