EXHIBIT A
JOINT FILING AGREEMENT
We, the signatories of Amendment 7 to the statement on Schedule 13D
filed with respect to the Common Stock of Quanta Services, Inc., to which this
Agreement is attached, hereby agree that such statement is, and any amendments
thereto filed by any of us will be, filed on behalf of each of us pursuant to
and in accordance with the provisions of Rule 13d-1(k) of the Securities
Exchange Act of 1934.
Dated: March 15, 2005
FIRST RESERVE FUND IX, L.P.
By: First Reserve GP IX, L.P., General Partner
By: First Reserve GP IX, Inc.,
General Partner
By: /s/ Xxxx X. Gold
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Name: Xxxx X. Gold
Title: Assistant Secretary
FIRST RESERVE GP IX, L.P.
By: First Reserve GP IX, Inc., General Partner
By: /s/ Xxxx X. Gold
--------------------------------------
Name: Xxxx X. Gold
Title: Assistant Secretary
FIRST RESERVE GP IX, INC.
By: /s/ Xxxx X. Gold
------------------------------------------
Name: Xxxx X. Gold
Title: Assistant Secretary
