LAHORE: Water and Power Development Authority (Wapda) on Wednesday sought proposals from a pre-qualified consortium to provide consultancy services for the Diamer-Bhasha dam, said a statement. Wapda issued a request for proposal (RFP) to three pre-qualified consortiums to provide consultancy services for the project. The consortiums, led by AECOM of the United States, Mott MacDonald Limited of the United Kingdom and Lahmeyer of Germany, have been asked to submit their proposals for construction supervision and…