U.S. DEPARTMENT OF TRANSPORTATION CONTRACTOR'S RELEASE	CONTRACT NO.
CONTRACTOR (Name and address) Greater Southwest Constructors, Inc.	SUM OF:
DOLLARS:

In consideration of the sum stated above, which has been paid or is to be paid to the Contractor, or his assignees, the Contractor, upon payment of the said sum by the UNITED STATES OF AMERICA (herein called the Government), does remise, release, and discharge the Government, its officers, agents, and employees, of and from all liabilities, obligations, claims and demands whatsoever under or arising from the said contract, except:

1. Specified claims in stated amounts or in estimated amounts where the amounts are not susceptible of exact statement by the Contractor, as follows:

2. Claims, together with reasonable expenses incidental thereto, based upon the liabilities of the Contractor to third parties arising out of the performance of this contract, which are not known to the Contractor on the date of the execution of this release and of which the Contractor gives notice in writing to the Contracting Officer within the period specified in the said contract; and

3. Claims for reimbursement of costs (other than expenses of the Contractor by reason of his indemnification of the Government against patent liability), including reasonable expenses incidental thereto, incurred by the Contractor under any provisions of the said contract related to patents.

The Contractor agrees, in connection with patent matters and with claims which are not released as set forth above, that he will comply with all provisions of the said contract, including without limitation those provisions relating to notification to the Contracting Officer and relating to the defense or prosecution of litigation.

IN WITNESS WHEREOF, this release has been executed this ________day of _________________________, 19____

WITNESS	____________________________________________

(Contractor)

_____________________________________	BY ________________________________________________

_____________________________________	TITLE _____________________________________________

NOTE: In the case of a corporation, witnesses are not required, but the certification below must be completed.

CERTIFICATE

I, _____________________________________, certify that I am the _________________________________________ secretary of the corporation named as Contractor in the foregoing release; that _________________________________________ who signed said release on behalf of the Contractor was then ___________________________________________ of said corporation; that said release was duly signed for and in behalf of said corporation by authority of its governing body and is within the scope of its corporate powers.

(CORPORATE SEAL)	________________________________________________________

________________________________________________________________________________________________________

Form DOT F 4220.4 (2-71)