TRB's Airport Cooperative Research Program (ACRP) Report 87: Procuring and Managing Professional Services for Airports provides guidance for procuring and managing professional services at airports for use by airport owners and operators. For the purposes of this report, professional services include planning, environmental, architectural and engineering, information technology, financial, legal, and other key professional services provided to airports. The report covers the procurement process, including scoping, pre-selection process, selection criteria, evaluation, and contract negotiations, and processes for managing professional services contracts. " -- Publisher's description.