Chesapeake Bay Program Reauthorization and Improvement Act

[AI summary unavailable — showing source text] Chesapeake Bay Program Reauthorization and Improvement Act - Amends the Federal Water Pollution Control Act (commonly known as the Clean Water Act or CWA) to establish: (1) financial reporting requirements for restoration activities in the Chesapeake Bay watershed and (2) the Independent Evaluation and Technical Advisory Committee to review and report on restoration activities in the Bay ecosystem and to provide recommendations to the Administrator of the Environmental Protection Agency (EPA) and the Secretary of the Department of Agriculture (USDA) on such activities. Authorizes appropriations for FY2013-FY2018. Requires the Administrator to: (1) complete an economic analysis of each EPA statement (i.e., guidance, policy, memorandum, regulation, or statement of general applicability and future effect that is designed to implement, interpret, or prescribe law or policy relating to water quality in the Bay); and (2) establish technical guidelines to be used by the Chesapeake Bay Nutrient and Sediment Trading Commission in establishing a voluntary interstate nitrogen, phosphorus, and sediment trading program for the Bay. Prohibits such guidelines from applying to agricultural nonpoin…