earth support systems

J. Derenzo Co. is a site work contractor based in Brockton, Massachusetts, serving New England for over 75 years. The company performs site clearing, grading, excavation, earth retention and foundation systems, utility installation, roadway construction, and snow and ice control for municipal and commercial clients. It was established in 1949 and operates four divisions with a large in-house fleet of site work equipment.

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curbingdeep hole excavationdemolitionexcavationgradingpavingroadway constructionsheet drivingsite clearingslurry wallsnow and ice controlsoil mixsoldier piles and laggingutility installation

J.H. Maxymillian, Inc. is a heavy civil and environmental remediation firm serving the private, federal, state and municipal sectors throughout the Northeast. Founded by James H. Maxymillian, P.E. in 1969, the company has completed thousands of civil and environmental contracts and is based in Pittsfield, Massachusetts. In 2025 it joined Wm. J. Keller & Sons Construction Corp.

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asphalt pavingbackfillcompactionconcrete workdam rehabilitationdeep excavationdemolitionEnvironmental Remediationgradinghorizontal directional drillingprecision hand excavationtrenchingwater management