EXHIBIT 1.1 17,500,000 Shares of Common Stock QUANTA SERVICES, INC. UNDERWRITING AGREEMENT September 30, 2004 J.P. MORGAN SECURITIES INC. CREDIT SUISSE FIRST BOSTON LLC BANC OF AMERICA SECURITIES LLC FIRST ALBANY CAPITAL INC. c/o J.P. Morgan...Letter Agreement • October 1st, 2004 • Quanta Services Inc • Electrical work • New York
