EXHIBIT 10.1 FIRST AMENDMENT TO CREDIT AGREEMENT This FIRST AMENDMENT TO CREDIT AGREEMENT (this "Amendment") dated as of November 26, 2003, among INSITUFORM TECHNOLOGIES, INC. (the "Borrower") and the Lenders referred to herein and signatories hereto...Credit Agreement • December 1st, 2003 • Insituform Technologies Inc • Water, sewer, pipeline, comm & power line construction • Missouri
