Offices


ManchesterGeolocation: 42.9717, -71.469

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Terracon's Manchester office is located in the heart of New Hampshire's "Queen City," in a historic shoe factory building situated along the Merrimack River. The Manchester office was originally founded in 1986 by Gary Jaworski, Ph.D., P.E., as Jaworski Geotech, Inc. (JGI). JGI was purchased by Terracon in 2007, becoming part of the national, award-winning, employee-owned consulting firm, which continues to provide reliable service to its Northeast regional clients.

Our primary services, offered to clients in both the public and private sectors, include environmental, geotechnical, and construction materials engineering and testing. Staff, in our Manchester office, provide hazardous building materials services (asbestos, lead paint, and mold related services), special onspections, and a full array of geotechnical assessment and design services, including our own drilling and geo physical equipment. Our environmental services include due diligence and investigation services, as well as compliance, permitting and forensic services, litigation support and expert testimony. We run a certified soil and concrete laboratory in Manchester and offer comprehensive Geographic Information Systems (GIS) mapping, database and visualization services. Our staff hold all applicable certificates and professional licenses, and manage projects that span many business sectors including transportation, energy, federal, legal, telecommunications, education, healthcare, and commercial and retail development.

Key Projects


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Legacy PlaceGeolocation: 42.2418, -71.1662

Legacy Place is a lifestyle center consisting of approximately 675,000 square feet with close to 80 shopping, dining, and entertainment venues.

Terracon provided construction materials engineering and testing services for the entire project site to the developer and for individual tenant spaces to multiple clients. Numerous technicians were onsite for approximately 16 months during construction monitoring and inspecting earthwork activities, as well as masonry, asphalt pavement, and specialty testing services.

Project challenges included winter construction, multiple…


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Lempster Wind FarmGeolocation: 43.2087, -72.1676

In 2003, plans began for New Hampshire's first utility-scale wind farm in Lempster. The wind farm went online in 2008 and has 12 wind turbines with a combined capacity of 24 megawatts and an annual production of more than 70,000 megawatt hours. The project provides electricity to the region through the Public Service of New Hampshire grid.

Terracon was hired to develop and complete a geotechnical investigation. 27 test borings were advanced at proposed locations of wind turbines, a meteorology tower, operation and maintenance buildings, and along proposed roadways, utilizing…


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Lone Pine Hunters ClubGeolocation: 42.7431, -71.5922

On behalf of the Lone Pine Hunter's Club (LPHC), Terracon completed a Supplemental Site Investigation (SSI) and Remedial Action Plan (RAP) in accordance with the New Hampshire Department of Environmental Services (DES) Contaminated Site Management Rules Env-Or 600 for the rifle and pistol shooting ranges located at 112 Rideout Road in the town of Hollis, N.H.

Based on the findings of the RAP, Terracon has proposed treatment of lead, arsenic, and antimony contaminated soil by on-site bullet separation via Pneumatic Separation Process with chemical stabilization of the remaining lead…