Authorizing the incurring of indebtedness, with the approval of the electors, of $500,000,000 for the purposes of providing financing in the form of grants and loans for the cost of dam removal, restoration and repair projects with priority given to certain high-hazard unsafe dams or deficient high-hazard dams or impoundments, providing for the powers and duties of the Pennsylvania Infrastructure Investment Authority and the Department of Environmental Protection, and establishing the Dam Project Bond Fund and the Dam Project Bond Sinking Fund