TRC Companies Acquires Draper Aden Associates

TRC Companies Acquires ESS Group

February 16, 2022

Engineering Services

TRC Companies has acquired ESS Group, a Northeast-based environmental and coastal engineering firm, to strengthen TRC's power & renewable energy and coastal engineering capabilities. The acquisition brings ESS's expertise in coastal resiliency, flood hazard vulnerability studies, water resources, and offshore wind support into TRC's broader environmental and engineering platform.

SLR Consulting Acquires A. DiCesare Associates, P.C.

October 8, 2025

Engineering Services

SLR Consulting has acquired A. DiCesare Associates, P.C. (ADA), a Connecticut-based engineering firm specializing in highway and railroad bridge inspection, bridge design and underwater inspection services. The deal strengthens SLR’s transportation engineering and inspection capabilities and deepens its client relationships with state transportation agencies and rail clients across the U.S. Northeast.

Terracon Acquires TAM Consultants, Inc.

December 7, 2020

Engineering Services

Terracon has acquired TAM Consultants, Inc., a 15-person facilities engineering and design firm based in Williamsburg, Virginia. The acquisition expands Terracon's facilities services footprint in Virginia and the mid-Atlantic, and all TAM employees will join Terracon while continuing to operate locally as TAM Consultants, Inc., A Terracon Company.

TRC Companies Acquires Quatric

June 16, 2021

Energy

TRC Companies has acquired Quatric, a Montreal and Quincy-based engineering and technology firm focused on electric and gas utilities. The acquisition expands TRC's digital capabilities for utilities, adding Quatric's expertise in SCADA, ADMS, EMS, systems integration and distribution network planning to TRC Digital's offerings across North America.

TRC Companies Acquires Paustenbach & Associates

August 27, 2024

Environmental Services

TRC Companies has acquired Paustenbach & Associates, a specialist scientific consulting firm focused on toxicology, exposure science and risk assessment, to expand TRC’s health-hazard assessment and litigation-support capabilities. The acquisition adds Paustenbach & Associates’ expert witness and scientific-analysis capabilities to TRC’s environmental and engineering service offerings.

TRC Companies Acquires Gladstein, Neandross & Associates (GNA)

June 6, 2023

Environmental Services

TRC Companies, Inc. acquired Gladstein, Neandross & Associates (GNA) to expand its Climate Solutions offerings with sustainable transportation consulting, fleet electrification, incentive-grant expertise and event capabilities. GNA, based in Santa Monica, California, brings proprietary tools (Funding 360), marketing/event services (ACT Expo) and deep experience in low- and zero-emission commercial transportation to TRC's energy and infrastructure platform.