a State for the period described in subsection (d), the State must demonstrate to the Secretary that project will not result in a net increase in the aggregate expenditures under the Medicaid program for such period for the State above the level of such expenditures if the demonstration project had not been implemented. (f) Evaluation and report to Congress (1) Evaluation The Secretary shall conduct an evaluation of the demonstration project in order to determine the impact of the project and to make recommendations on improvements to the performance of the health and mental health service system and on individuals enrolled in the Medicaid program, with particular emphasis on individuals who are high utilizers of inpatient psychiatric hospital services and substance abuse residential services. (2) Items included in evaluation Such evaluation shall include the following: (A) An assessment of the delivery of inpatient psychiatric hospital services, substance abuse residential services, and community-based services under the Medicaid program