TRC Provides Environmental Engineering Services to Guam Power Authority

Project Supports Compliance With Clean Air Act and Other Regulations


LOWELL, MA--(Marketwire - Dec 12, 2011) - TRC Companies, Inc. (NYSE: TRR) has kicked off a project in support of the Guam Power Authority's (GPA) environmental compliance program. Under a multi-year contract with GPA, TRC is providing environmental engineering and technical services related to strategic environmental planning, ambient air quality monitoring and modeling, regulatory oversight, and training.

GPA provides electricity to the island territory's 175,000 residents. It has several initiatives underway to address increased demand and strain on infrastructure related to an unprecedented and ongoing population boom caused by US military buildup.

"TRC is proud to be a part of this important environmental compliance project for the Guam Power Authority," said Chris Vincze, Chairman and Chief Executive Officer. "As pioneers of many scientific and engineering methodologies used in the air and environmental industry today, our experts are committed to helping GPA meet its goals of delivering economical and environmentally friendly energy to its customers."

Over the course of the contract, TRC's work with GPA will include: formulating an overall strategic policy for environmental issues; facilitating the re-designation of non-attainment areas; performing air quality modeling for use in petition to US EPA and Guam EPA; assisting with revisions to the State Implementation Plan (SIP) for achieving compliance with the Clean Air Act; planning continued air emissions monitoring; establishing an air quality monitoring program; supporting responses to the Public Utilities Commission and other environmental regulators; and environmental permitting for GPA's fuel diversification initiative.

About TRC
A pioneer in groundbreaking scientific and engineering developments since the 1960s, TRC is a national engineering, consulting and construction management firm that provides integrated services to the energy, environmental and infrastructure markets. TRC serves a broad range of clients in government and industry, implementing complex projects from initial concept to delivery and operation. TRC delivers results that enable clients to achieve success in a complex and changing world. For more information and updates from the Company, visit TRC's website at www.TRCsolutions.com and follow us on Twitter at @TRC_Companies and on LinkedIn.

Forward-Looking Statements
Certain statements in this press release may be forward-looking statements within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934. You can identify these statements by forward-looking words such as "may," "expects," "plans," "anticipates," "believes," "estimates," or other words of similar import. You should consider statements that contain these words carefully because they discuss TRC's future expectations, contain projections of the Company's future results of operations or of its financial condition, or state other "forward-looking" information. TRC believes that it is important to communicate its future expectations to its investors. However, there may be events in the future that the Company is not able to accurately predict or control and that may cause its actual results to differ materially from the expectations described in its forward-looking statements. Investors are cautioned that all forward-looking statements involve risks and uncertainties, and actual results may differ materially from those discussed as a result of various factors, including, but not limited to, the availability and adequacy of insurance; the uncertainty of our operational and growth strategies; circumstances which could create large cash outflows, such as contract losses, litigation, uncollectible receivables and income tax assessments, including potential payments related to TRC's Houston lease litigation; regulatory uncertainty; the availability of funding for government projects; the level of demand for TRC's services; product acceptance; industry-wide competitive factors; the ability to continue to attract and retain highly skilled and qualified personnel; and general political or economic conditions. Furthermore, market trends are subject to changes, which could adversely affect future results. See additional discussion in TRC's Annual Report on Form 10-K for the fiscal year ended June 30, 2011, Quarterly Reports on Form 10-Q, and other factors detailed from time to time in the Company's other filings with the Securities and Exchange Commission.

Contact Information:

Company Contacts:
Angela Cincotta
(978) 656-3594
acincotta@trcsolutions.com

Catherine Stanley
(978) 656-3538
cstanley@trcsolutions.com

Investor Contact:
Sharon Merrill Associates
(617) 542-5300
trr@investorrelations.com