Wachovia Bank, N.A. Special Assets Management PA1246 7th Floor Philadelphia, PA 19109

Exhibit 10.1

Wachovia Bank, N.A.

Special Assets Management

PA1246

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February 15, 2006

VIA ELECTRONIC MAIL

TRC Companies, Inc.

Boot ▇▇▇▇▇ South

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▇▇▇▇▇▇, ▇▇ ▇▇▇▇▇

Attn: ▇▇▇▇▇ ▇▇▇▇▇▇, CEO

Telephone Number: ▇▇▇-▇▇▇-▇▇▇▇

Telecopy Number: ▇▇▇-▇▇▇-▇▇▇▇

Email: ▇▇▇▇▇▇▇@▇▇▇▇▇▇▇▇▇▇▇▇.▇▇▇

Re: Second Forbearance Agreement And Global Amendment To Credit Documents dated as of January 24, 2006 between Wachovia Bank, National Association, as Agent, the Lenders and TRC Companies, Inc. and the Subsidiaries (the “Forbearance Agreement”)

Dear ▇▇. ▇▇▇▇▇▇:

Please refer to the Forbearance Agreement. Capitalized terms not otherwise defined herein shall have the meanings ascribed thereto in the Forbearance Agreement.

The Borrowers have been unable to deliver certain financial projections to the Lenders upon which the Agent and the Lenders can establish financial covenants as required by ¶ E.13 of the Forbearance Agreement. The Borrowers have requested, and the Agent and the Lenders have agreed, upon the conditions set forth in this Amendment Letter, to amend certain provisions of the Forbearance Agreement as provided herein as follows:

1. Paragraph E. 7. of the Forbearance Agreement is amended (i) deleting the word “and” at the end of subparagraph (c) thereof; (ii) deleting the period at the end of subparagraph (d) and replacing it with a semicolon followed by the word “and”; and (iii) inserting a new subparagraph (e) to read as follows:

e. Upon any private investment in public equity, issuance of class of equity or making any capital contribution (each, an “Equity Raise”) by the Borrowers, the Borrowers shall remit 100% of the proceeds received on account of such Equity Raise (less any normal and actual fees, expenses and taxes incurred and directly payable as a result of such Equity Raise) to the Agent for the payment to the Lenders which shall be applied to the unpaid principal balance of

the Loans and, upon such payment, the Applicable Percentage of the proceeds of such Equity Raise so received shall permanently reduce the Maximum Available Revolving Credit Amount. For purposes of this subparagraph, “Applicable Percentage” shall mean: (i) 60% on or before March 31, 2006; and (ii) 70% after March 31, 2006.

2. Paragraph E.11 of the Forbearance Agreement is amended by: (a) replacing the date “March 15, 2006” with the phrase “the earlier of (i) 14 calendar days after the Borrowers receive final approval of their accounting treatment of certain Exit Strategy Contract revenues from an independent public accounting firm, or (ii) March 31, 2006”; and (b) replacing the date “March 31, 2006” with the phrase “the earlier of (i) 14 calendar days after the Borrowers file their Form 10K for Fiscal Year End 2005 with the SEC, or (ii) April 15, 2006.”

3. Paragraph E.13 of the Forbearance Agreement is amended by replacing the date “February 15, 2006” with the phrase “ the earlier of (i) five (5) calendar days after the Borrowers receive final approval of their accounting treatment of certain Exit Strategy Contract revenues from an independent public accounting firm; or (ii) March 15, 2006”.

In consideration for the Lenders’ agreement to the amendments provided herein, the Borrowers shall pay to the Agent a fee (for the benefit of the Lenders executing this Amendment Letter) (i) in the amount of $25,000.00 to be distributed to the said Lenders in accordance with their Pro Rata Share which shall be fully earned and paid on the date of execution of this Letter Amendment; and (ii) in the amount of $50,000.00 to be distributed to the said Lenders in accordance with their Pro Rata Share which shall be fully earned and paid on March 31, 2006; provided however, the fee payable pursuant to this clause (ii) shall be waived if, on or before March 31, 2006, the Loans and the Maximum Available Revolving Credit Amount have been permanently reduced to an amount equal to or less than $50,000,000.00.

All other terms and conditions of the Forbearance Agreement remain in full force and effect.

Each Borrower, on behalf of itself, and any person or entity claiming by or through it (collectively referred to as the “Releasors”), hereby unconditionally remises, releases and forever discharges the Agent, each Lender and their respective past and present officers, directors, shareholders, agents, parent corporation, subsidiaries, affiliates, trustees, administrators, attorneys, predecessors, successors and assigns and the heirs, executors, administrators, successors and assigns of any such person or entity, as releasees (collectively referred to as the “Releasees”), of and from any and all manner of actions, causes of action, suits, debts, dues, accounts, bonds, covenants, contracts, agreements, promises, warranties, guaranties, representations, liens, mechanics’ liens, judgments, claims, counterclaims, cross-claims, defenses and/or demands whatsoever, including claims for contribution and/or indemnity, whether now known or unknown, past or present, asserted or unasserted, contingent or liquidated, at law or in equity, or resulting from any assignment, if any (collectively referred to as “Claims”), which any

of Releasors ever had or now have against any of the Releasees, for or by reason of any cause, matter or thing whatsoever, arising from the beginning of time to the date of execution of this Amendment Letter, including, but not limited to, any and all Claims relating to or arising from the lending relationship between the Agent, the Lenders and the Borrowers. Each Borrower warrants and represents that it has not assigned, pledged, hypothecated and/or otherwise divested itself and/or encumbered all or any part of the Claims being released hereby and agrees to indemnify and hold harmless any and all of Releasees against whom any Claim so assigned, pledged, hypothecated, divested and/or encumbered is asserted.

This Amendment Letter shall bind and inure to the benefit of the respective successors and assigns of each of the parties, including all Lenders that are successors or assignees thereof.

This Amendment Letter and the Forbearance Agreement reflects the entire understanding of the parties with respect to the transactions contemplated hereby and shall not be contradicted or qualified by any other agreement, oral or written, before the date hereof. No amendment or waiver of any provision of this Amendment Letter or the Forbearance Agreement shall in any event be effective unless the same shall be in writing and signed by each party hereto (or with respect the Lenders, the Required Lenders if applicable), and then such waiver or consent shall be effective only in the specific instance and for the specific purpose for which given.

This Amendment Letter shall be construed under and governed by the internal laws of the State of New Jersey and may be executed in any number of counterparts and by different parties on separate counterparts. Each of such counterparts shall be deemed to be an original, and all of such counterparts, taken together, shall constitute but one and the same agreement.

[REMAINDER OF PAGE LEFT INTENTIONALLY BLANK]

Delivery of an executed counterpart of this Amendment Letter by telecopy shall be equally effective as delivery of a manually executed counterpart.

Very truly yours,

WACHOVIA BANK, NATIONAL ASSOCIATION, as Agent

/s/	▇▇▇▇▇▇▇ ▇▇▇▇▇▇▇▇
	▇▇▇▇▇▇▇ ▇▇▇▇▇▇▇▇
	Senior Vice President

SIGNATURES ON FOLLOWING PAGE

AGREED TO AND ACKNOWLEDGED:

TRC COMPANIES, INC.			TRC ENVIRONMENTAL CORPORATION

By:	/s/	▇▇▇▇▇▇ ▇. ▇▇▇▇	By:	/s/	▇▇▇▇▇▇ ▇. ▇▇▇▇
Name:		▇▇▇▇▇▇ ▇. ▇▇▇▇	Name:		▇▇▇▇▇▇ ▇. ▇▇▇▇
Title:		Senior Vice President	Title:		Senior Vice President


TRC ENGINEERS, INC.			TRC ▇▇▇▇▇▇ ASSOCIATES, INC.


By:	/s/	▇▇▇▇▇▇ ▇. ▇▇▇▇	By:	/s/	▇▇▇▇▇▇ ▇. ▇▇▇▇
Name:		▇▇▇▇▇▇ ▇. ▇▇▇▇	Name:		▇▇▇▇▇▇ ▇. ▇▇▇▇
Title:		Vice President and Secretary	Title:		Secretary


TRC MARIAH ASSOCIATES, INC.			VECTRE CORPORATION


By:	/s/	▇▇▇▇▇▇ ▇. ▇▇▇▇	By:	/s/	▇▇▇▇▇▇ ▇. ▇▇▇▇
Name:		▇▇▇▇▇▇ ▇. ▇▇▇▇	Name:		▇▇▇▇▇▇ ▇. ▇▇▇▇
Title:		Vice President and Secretary	Title:		Secretary


TRC SOLUTIONS, INC.			▇▇▇▇▇▇ ASSOCIATES


By:	/s/	▇▇▇▇▇▇ ▇. ▇▇▇▇	By:	/s/	▇▇▇▇▇▇ ▇. ▇▇▇▇
Name:		▇▇▇▇▇▇ ▇. ▇▇▇▇	Name:		▇▇▇▇▇▇ ▇. ▇▇▇▇
Title:		Assistant Secretary	Title:		Secretary

HUNTER ASSOCIATES TEXAS, LTD.			IMBSEN & ASSOCIATES


By:	/s/	▇▇▇▇▇▇ ▇. ▇▇▇▇	By:	/s/	▇▇▇▇▇▇ ▇. ▇▇▇▇
Name:		▇▇▇▇▇▇ ▇. ▇▇▇▇	Name:		▇▇▇▇▇▇ ▇. ▇▇▇▇
Title:		Secretary	Title:		Secretary


ENGINEERED AUTOMATION			GBF HOLDINGS LLC
SYSTEMS, INCORPORATED			By:		TRC Companies, Inc.,
					Its Managing Member

By:	/s/	▇▇▇▇▇▇ ▇. ▇▇▇▇
Name:		▇▇▇▇▇▇ ▇. ▇▇▇▇	By:	/s/	▇▇▇▇▇▇ ▇. ▇▇▇▇
Title:		Secretary	Name:		▇▇▇▇▇▇ ▇. ▇▇▇▇
			Title:		Secretary


PBWO HOLDINGS, LLC			SITE-▇▇▇▇▇▇▇▇ ENGINEERS, INC.
			(Virginia)

By:	/s/	▇▇▇▇▇▇ ▇. ▇▇▇▇	By:	/s/	▇▇▇▇▇▇ ▇. ▇▇▇▇
Name:		▇▇▇▇▇▇ ▇. ▇▇▇▇	Name:		▇▇▇▇▇▇ ▇. ▇▇▇▇
Title:		Secretary	Title:		Secretary


HUNTER ASSOCIATES, INC.			SITE-▇▇▇▇▇▇▇▇ ENGINEERS, INC.
			(New Jersey)

By:	/s/	▇▇▇▇▇▇ ▇. ▇▇▇▇	By:	/s/	▇▇▇▇▇▇ ▇. ▇▇▇▇
Name:		▇▇▇▇▇▇ ▇. ▇▇▇▇	Name:		▇▇▇▇▇▇ ▇. ▇▇▇▇
Title:		Secretary	Title:		Secretary

E/PRO ENGINEERING AND			ESSEX ENVIRONMENTAL, INC.
ENVIRONMENTAL CONSULTING, LLC

			By:	/s/	▇▇▇▇▇▇ ▇. ▇▇▇▇
By:	/s/	▇▇▇▇▇▇ ▇. ▇▇▇▇	Name:		▇▇▇▇▇▇ ▇. ▇▇▇▇
Name:		▇▇▇▇▇▇ ▇. ▇▇▇▇	Title:		Secretary
Title:		Secretary


NEW CENTURY ENGINEERING			▇▇▇▇▇ ENGINEERING, INC.
SUPPORT SERVICES, LLC

			By:	/s/	▇▇▇▇▇▇ ▇. ▇▇▇▇
By:	/s/	▇▇▇▇▇▇ ▇. ▇▇▇▇	Name:		▇▇▇▇▇▇ ▇. ▇▇▇▇
Name:		▇▇▇▇▇▇ ▇. ▇▇▇▇	Title:		Secretary
Title:		Secretary


SITE CONSTRUCTION SERVICES, INC.			BV ENGINEERING


By:	/s/	▇▇▇▇▇▇ ▇. ▇▇▇▇	By:	/s/	▇▇▇▇▇▇ ▇. ▇▇▇▇
Name:		▇▇▇▇▇▇ ▇. ▇▇▇▇	Name:		▇▇▇▇▇▇ ▇. ▇▇▇▇
Title:		Secretary	Title:		Secretary


SITE-▇▇▇▇▇▇▇▇ ENGINEERS, INC.			TRC RAVIV ASSOCIATES, INC.
(New York)

By:	/s/	▇▇▇▇▇▇ ▇. ▇▇▇▇	By:	/s/	▇▇▇▇▇▇ ▇. ▇▇▇▇
Name:		▇▇▇▇▇▇ ▇. ▇▇▇▇	Name:		▇▇▇▇▇▇ ▇. ▇▇▇▇
Title:		Secretary	Title:		Secretary

CUBIX CORPORATION			EAST CANYON HOLDINGS LLC
			By:		TRC Companies, Inc.,
					Its Managing Member

By:	/s/	▇▇▇▇▇▇ ▇. ▇▇▇▇
Name:		▇▇▇▇▇▇ ▇. ▇▇▇▇	By:	/s/	▇▇▇▇▇▇ ▇. ▇▇▇▇
Title:		Secretary	Name:		▇▇▇▇▇▇ ▇. ▇▇▇▇
			Title:		Secretary


SGS ▇▇▇▇▇▇, INC.			SITE-▇▇▇▇▇▇▇▇ ENGINEERS
			INTERNATIONAL, LLC

By:	/s/	▇▇▇▇▇▇ ▇. ▇▇▇▇
Name:		▇▇▇▇▇▇ ▇. ▇▇▇▇	By:	/s/	▇▇▇▇▇▇ ▇. ▇▇▇▇
Title:		Secretary	Name:		▇▇▇▇▇▇ ▇. ▇▇▇▇
			Title:		Secretary


ENVIRONOMICS, INC.			ENVIRONOMICS TX, LLC


By:	/s/	▇▇▇▇▇▇ ▇. ▇▇▇▇	By:	/s/	▇▇▇▇▇▇ ▇. ▇▇▇▇
Name:		▇▇▇▇▇▇ ▇. ▇▇▇▇	Name:		▇▇▇▇▇▇ ▇. ▇▇▇▇
Title:		Secretary	Title:		Secretary


PACIFIC LAND DESIGN, INC.			VPOINT


By:	/s/	▇▇▇▇▇▇ ▇. ▇▇▇▇	By:	/s/	▇▇▇▇▇▇ ▇. ▇▇▇▇
Name:		▇▇▇▇▇▇ ▇. ▇▇▇▇	Name:		▇▇▇▇▇▇ ▇. ▇▇▇▇
Title:		Secretary	Title:		Secretary

ENVIRONOMICS SOUTHWEST, LLC			ENVIRONOMICS WEST, LLC
By:		TRC Companies, Inc.,
		Its Managing Member
			By:	/s/	▇▇▇▇▇▇ ▇. ▇▇▇▇
By:	/s/	▇▇▇▇▇▇ ▇. ▇▇▇▇	Name:		▇▇▇▇▇▇ ▇. ▇▇▇▇
Name:		▇▇▇▇▇▇ ▇. ▇▇▇▇	Title:		Secretary
Title:		Secretary


PACIFIC LAND DESIGN-			▇▇▇▇▇ ENGINEERING, INC.
ROSEVILLE, INC.

			By:	/s/	▇▇▇▇▇▇ ▇. ▇▇▇▇
By:	/s/	▇▇▇▇▇▇ ▇. ▇▇▇▇	Name:		▇▇▇▇▇▇ ▇. ▇▇▇▇
Name:		▇▇▇▇▇▇ ▇. ▇▇▇▇	Title:		Secretary
Title:		Secretary


ECON CAPITAL, LP


By:	/s/	▇▇▇▇▇▇ ▇. ▇▇▇▇
Name:		▇▇▇▇▇▇ ▇. ▇▇▇▇
Title:		Assistant Secretary

[LENDERS’ SIGNATURES ON THE FOLLOWING PAGE]

AGREED TO AND ACKNOWLEDGED:

WACHOVIA BANK, NATIONAL			▇▇▇▇▇▇▇ ▇▇▇▇▇ BUSINESS
ASSOCIATION			FINANCIAL SERVICES, INC.
(formerly known as First Union National
Bank), Individually as Lender
			By:	/s/	▇▇▇▇▇▇ ▇. ▇▇▇▇▇▇
			Name:		▇▇▇▇▇▇ ▇. ▇▇▇▇▇▇
By:	/s/	▇▇▇▇▇▇▇ ▇▇▇▇▇▇▇▇	Title:		Vice President
Name:		▇▇▇▇▇▇▇ ▇▇▇▇▇▇▇▇
Title:		Senior Vice President



TD BANKNORTH, N.A.			ABELCO FINANCE LLC (assignee of
			Union Bank Of California, N.A.)

By:	/s/	▇▇▇▇▇▇▇ ▇. ▇▇▇▇▇▇▇▇
Name:		▇▇▇▇▇▇▇ ▇. ▇▇▇▇▇▇▇▇	By:	/s/	▇▇▇▇▇ ▇▇▇▇▇
Title:		Senior Vice President	Name:		▇▇▇▇▇ ▇▇▇▇▇
			Title:		Senior Vice President

Wachovia Bank, N.A. Special Assets Management PA1246 7th Floor Philadelphia, PA 19109

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