Document:

Exhibit
4.4

JOINDER
AGREEMENT

The undersigned hereby agrees, effective as of the
date hereof, to become a party to that certain Investor Rights Agreement, dated
as of February 9, 2006, by and among AECOM Technology Corporation (the “Company”)
and the parties named therein, as amended by that certain Amendment No. 1 to
the Investor Rights Agreement, dated as of February 14, 2006, by and among the
Company and the parties named therein (collectively, the “Agreement”),
and for all purposes of the Agreement, the undersigned shall be included within
the term “Investor” (as defined in the Agreement).  As of the date hereof the undersigned
represents and warrants that J.H. Whitney VI, L.P. is a Delaware limited
partnership, the sole general partner of which is J.H. Whitney Equity Partners
VI, LLC, a Delaware limited liability company, the managing members of which
are each a natural person who is a citizen of the United States.  For purposes of clarification, J.H. Whitney VI,
L.P. constitutes an “Investor” for purposes of, and as defined in, the
Agreement.  The address and facsimile
number to which notices may be sent to the undersigned is as follows:

	
  

  	
  Address:

  	
   

  
	
   

  	
   

  	
   

  
	
   

  	
  J.H. Whitney VI, L.P.

  	
   

  
	
   

  	
  177 Broad Street

  	
   

  
	
   

  	
  Stamford, CT 06901

  	
   

  
	
   

  	
  Attention: Kevin J. Curley

  	
   

  
	
   

  	
   

  	
   

  
	
   

  	
  Facsimile No.:

  	
   

  
	
   

  	
   

  	
   

  
	
   

  	
  (203) 873-1442

  	
   

  
	
   

  	
   

  	
   

  
	
   

  	
  with a copy to:

  	
   

  
	
   

  	
   

  	
   

  
	
   

  	
  Gibson, Dunn & Crutcher LLP

  	
   

  
	
   

  	
  2029 Century Park East, Suite 4000

  	
   

  
	
   

  	
  Los Angeles, CA 90067

  	
   

  
	
   

  	
  Attention: Jonathan Layne

  	
   

  
	
   

  	
   

  	
   

  
	
   

  	
  J.H. Whitney VI, L.P.

  
	
   

  	
   

  
	
   

  	
  By: J.H. Whitney Equity Partners VI, LLC

  
	
   

  	
  Its:  General
  Partner

  
	
   

  	
   

  
	
   

  	
  By:

  	
   

  	
   

  
	
   

  	
   

  	
  Name: Michael C. Salvator

  
	
   

  	
   

  	
  Title: Managing Member

  
						

 

 

	
  Acknowledged and agreed to by:

  	
   

  
	
   

  	
   

  
	
  AECOM Technology Corporation

  	
   

  
	
   

  	
   

  
	
  By:

  	
   

  	
   

  	
   

  
	
   

  	
  Name:

  	
   

  	
   

  	
   

  
	
   

  	
  Title:Exhibit 4.5

EXECUTION COPY

AMENDMENT NO. 1 TO INVESTOR
RIGHTS AGREEMENT

This
Amendment No. 1 (this “Amendment”) to
Investor Rights Agreement (this “Agreement”) is
made as of the 14th day of February, 2006, by and among AECOM
Technology Corporation, a Delaware corporation (the “Company”),
and the investors on the signature page hereto (together with any of their
Permitted Transferees and any other stockholders of the Company who from time
to time become party to this Agreement by execution of a Joinder Agreement in
substantially the same form attached hereto as Exhibit A, herein
referred to collectively as the “Investors” and individually as an “Investor.”  Capitalized terms not defined herein are
defined as set forth in Section 1 of the Agreement.

The
Company and the Investors, as parties to the Agreement, desire to enter into
this agreement in order to amend, effective as of the date hereof, certain
provisions of the Agreement in accordance with Section 11.4 of the Agreement.

NOW
THEREFORE, the Company and the Investors hereby agree as follows:

A.           Amendment to Certain Defined Terms.

1.             The definition of “PCG Holder” is hereby added to Section 1
of the Agreement by adding the following text thereto:

“PCG Holder”
shall mean CalPERS/PCG Corporate Partners, LLC and each Affiliate thereof to
whom the PCG Holder has transferred its New Preferred Shares.

B.            Other Amendments.

1.             Section 7 of the Agreement is
hereby amended and restated in its entirety by the following text:

“7.           Delivery
of Financial Statements

7.1          Annual
Financial Statements

Until the earlier of (i) the completion of an
Initial Public Offering and (ii) the date on which the Company becomes subject
to the reporting requirements under the Securities Exchange Act of 1934, as
amended, the Company shall deliver to each Investor Group Holder and the PCG
Holder, an audited consolidated balance sheet of the Company and its
subsidiaries as at the end of each fiscal year and audited consolidated
statements of operations and of cash flows of the Company and its subsidiaries
for each fiscal year, including all notes to such financial statements, at the
same time the Company delivers such financial statements to the borrowers under
the Senior Credit Facility.  In the event
that the Senior Credit Facility is terminated, the Company shall deliver such
financial statements pursuant to the requirements of the Senior Credit Facility
as of the date of termination.

7.2          Quarterly
Financial Statements and Annual Budget

Until the earlier of (i) the completion of an
Initial Public Offering and (ii) the date on which the Company becomes subject
to the reporting requirements under the Securities Exchange Act of 1934, as
amended, the Company shall deliver to each Investor Group Holder  and the PCG Holder (so long as such Holder or such
Holder’s Investor Group holds New Preferred Shares with a Liquidation
Preference of at least $10,000,000), a consolidated balance sheet of the
Company and its subsidiaries as at the end of each of the first three fiscal
quarters, consolidated statements of operations and of cash flows of the
Company and its subsidiaries for each of the first three fiscal quarters,
including all notes to such financial statements, and an annual operating
budget for the Company for the following fiscal year, at the same time the
Company delivers such financial statements and budget to the borrowers under
the Senior Credit Facility.   In the
event that the Senior Credit Facility is terminated, the Company shall deliver
such financial statements pursuant to the requirements of the Senior Credit
Facility as of the date of termination.”

2.             Section 8.1 of the Agreement is
hereby amended and restated in its entirety by the following text:

“8.1        Access
to Information

Until the earlier of (i) the completion of an
Initial Public Offering and (ii) the date on which the Company becomes subject
to the reporting requirements under the Exchange Act, the Company (A) agrees to
permit the Investor Group Holders and the PCG Holder and each of their agents
and representatives, upon reasonable advance notice to an officer of the
Company, reasonable access during normal business hours to (1) the premises of
the Company and its subsidiaries and (2) all the books, computer software
application systems, files and records of the Company and its subsidiaries,
including, but not limited to, lease, loan, real estate, financial, tax and
personnel files and records, and to furnish the Investor Group Holders and the
PCG Holder such financial and operating data, reports and other information
with respect to the business, assets and properties of the Company as the
Investor Group Holders or the PCG Holder shall reasonably request; and (B) will
provide the Investor Group Holders and the PCG Holder and  each of their representatives and agents,
reasonable access during normal business hours to the Company’s executives,
officers and other key employees for the discussion of the materials described
above in Sections 7 and 8 and other matters relating to the
Company’s business; provided that such inspection and access shall not (1)
extend to information that is the subject of government “classified,” security
or similar restrictions, (2) unreasonably disrupt the day-to-day business
operations of the Company and its Subsidiaries, (3) violate a confidentiality
agreement between the Company and a third party, or (4) result in the waiver of
any attorney-client, attorney work product or other similar legal privilege
asserted by the Company in good faith.”

3.             Section
8.2(b) of the Agreement is hereby amended and restated in its
entirety by the following text:

Amendment No. 1 to
Investor Rights Agreement

(b)           Notwithstanding any other provision contained herein, each Investor
Group Holder and the PCG Holder, with the prior review and written consent of
the Company, which consent shall not be unreasonably withheld or delayed, shall
have the right to issue a press release or other public statement, with respect
to the transactions contemplated by this Agreement and the Transaction Documents.  Each Investor Group, Investor Group Holder or
the PCG Holder shall also have the right to list the Company as a portfolio
company of such Investor Group, Investor Group Holder or the PCG Holder on the
web site or sites owned and maintained by such Person and, with the written
consent of the Company, which consent shall not be unreasonably withheld or
delayed, in any other marketing materials as such Investor Group, Investor
Group Holder or the PCG Holder shall determine.

4.             Section 8.3 of the Agreement is
hereby is hereby added to Section 8 of the Agreement by adding the
following text thereto:

“8.3        Access to Board Information

“As long as the PCG
Holder holds at least fifty percent (50%) of the New Preferred Shares it
initially acquired (or Registrable Securities converted therefrom), the Company
shall provide a representative of the PCG Holder with copies of all notices,
minutes, consents and other materials that it provides to its directors;
provided, however, that such representative shall agree to hold in confidence
and trust and to act in a fiduciary manner with respect to all information so
provided.”

5.             Section 10.3 of the Agreement is
hereby amended and restated in its entirety by the following text:

“The Company shall within
ten (10) Business Days following the appointment of each Investor Group
Director provide for and maintain indemnification of each Investor Group
Director on terms no less favorable than the indemnification, including,
without limitation, directors’ and officers’ liability insurance, in effect as
of such date in respect of the then sitting members of the Company’s Board of
Directors.  The obligation of the Company
pursuant to this Section 10.3, including directors’ and officers’
liability insurance, shall continue so long as an Investor Group Director
serves on the Board of Directors of the Company, and for a period of twelve
(12) months after such Investor Group Director no longer serves as a member of
the Board of Directors of the Company. 
For the avoidance of doubt, this Section 10.3 shall not affect
any indemnification obligation the Company may have, including those set forth
under the Company’s bylaws, and indemnification for matters based on, or
arising out of, any matter existing or occurring while such Investor Group
Director was a director, even though such Investor Group Director may no longer
be a director at the time any claim for indemnification is made, shall continue
following such director’s service on the Board of Directors.”

C.            Miscellaneous

1.             This Amendment is made by the parties to
the Agreement pursuant to Section 11.4 of the Agreement.  The Agreement, as amended by this Amendment, constitutes
the full and entire understanding and agreement between parties with respect to
the subject matter hereof, and collectively supersede all other prior agreements
and understandings, both oral and written, among the parties with respect to
the subject matter hereof.

2.             This Amendment shall be governed by and
construed in accordance with the laws of the state of New York (without regard
to its principles of conflicts of laws, except for New York General Obligations
Law Section 5-1401).

3.             This Amendment may be executed in two or
more counterparts, each of which shall be deemed an original but all of which
shall together constitute one and the same instrument.  Delivery of an executed counterpart of a
signature page of this Agreement by facsimile (which shall include a photocopy
distributed by e-mail) shall be effective as delivery of a manually executed
counterpart of this Agreement.  Delivery
of manually executed counterparts of this Agreement shall immediately follow
delivery by facsimile, but the failure to so deliver a manually executed
counterpart shall not affect the validity, enforceability, or binding effect
hereof.

[SIGNATURE
PAGES TO FOLLOW]

The parties have executed
this Amendment No. 1 to Investor Rights Agreement as of the date first written
above.

	
  

  	
  AECOM TECHNOLOGY CORPORATION

  	 

	
   

  	
   

  	 

	
   

  	
   

  	 

	
   

  	
  By:

  	
   

  	
   

  
	
   

  	
   

  	
  Name:

  	
  Eric Chen

  	 

	
   

  	
   

  	
  Title:

  	
  Senior Vice President, Finance, and

  General Counsel

  	 

							

 

	
   

  	
  GSO SPECIAL SITUATIONS FUND LP

  
	
   

  	
   

  
	
   

  	
  By GSO Capital
  Partners LP, its Investment 

  
	
   

  	
  Advisor

  
	
   

  	
   

  
	
   

  	
   

  
	
   

  	
  By:

  	
   

  	
   

  
	
   

  	
  Name: George Fan

  
	
   

  	
  Title: Authorized Signatory

  
	
   

  	
   

  
	
   

  	
   

  
	
   

  	
  GSO
  SPECIAL SITUATIONS OVERSEAS

  FUND
  LTD.

  
	
   

  	
   

  
	
   

  	
  By GSO Capital
  Partners LP, its Investment

  
	
   

  	
  Advisor

  
	
   

  	
   

  
	
   

  	
   

  
	
   

  	
  By:

  	
   

  	
   

  
	
   

  	
  Name: George Fan

  
	
   

  	
  Title: Authorized Signatory

  
	
   

  	
   

  
	
   

  	
   

  
	
   

  	
  GSO
  SPECIAL SITUATIONS OVERSEAS

  BENEFIT
  PLAN FUND LTD

  
	
   

  	
   

  
	
   

  	
  By GSO Capital
  Partners LP, its Investment 

  
	
   

  	
  Advisor

  
	
   

  	
   

  
	
   

  	
   

  
	
   

  	
  By:

  	
   

  	
   

  
	
   

  	
  Name: George Fan

  
	
   

  	
  Title: Authorized Signatory

  
	
   

  	
   

  
	
   

  	
   

  
	
   

  	
  GSO
  CREDIT OPPORTUNITIES FUND

  (HELIOS),
  L.P.

  
	
   

  	
   

  
	
   

  	
  By GSO Capital
  Partners LP, its Investment 

  
	
   

  	
  Advisor

  
	
   

  	
   

  
	
   

  	
   

  
	
   

  	
  By:

  	
   

  	
   

  
	
   

  	
  Name: George Fan

  
	
   

  	
  Title: Authorized Signatory

  
							

 

	
  

  	
  J.H.
  WHITNEY VI, L.P.

  
	
   

  	
   

  
	
   

  	
  By: J.H. Whitney
  Equity Partners VI, LLC

  
	
   

  	
  Its: General
  Partner

  
	
   

  	
   

  
	
   

  	
  By:

  	
   

  	
   

  
	
   

  	
   

  	
  Name:  Michael C. Salvator

  
	
   

  	
   

  	
  Title:  Managing Member

  
					

 

	
   

  	
  CALPERS/PCG CORPORATE PARTNERS,

  LLC

  
	
   

  	
   

  
	
   

  	
  By:

  	
  PCG Corporate
  Partners Investments LLC

  
	
   

  	
  Its:

  	
  Manager

  
	
   

  	
   

  	
   

  
	
   

  	
  By: Pacific
  Corporate Group Holdings, LLC

  
	
   

  	
  Its: Managing
  Member

  
	
   

  	
   

  
	
   

  	
  By:

  	
   

  	
   

  	
   

  
	
   

  	
   

  	
  Name:

  	
   

  	
   

  
	
   

  	
   

  	
  Title:

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