Specifications include, but are not limited to: The SCHA may only provide Project-Based Voucher assistance for up to 25 units or 25% of the units in a project, unless the project is in a census tract with a poverty rate of 20% or less, in which case it is capped at 40%. The following units are excluded from the project caps noted above: • Units exclusively serving elderly families. • Units housing households eligible for supportive services available to all families receiving PBV assistance in the project. In order for the supportive services exception to apply to a unit, the project must make supportive services available to all assisted families in the project, and the family must be eligible for one or more of the services and meet all applicable laws, regulations, and rules. The family may, but is not required to, participate in the services. Approved supportive services are intended to help ensure stability and to maximize each tenant’s ability to live independently. Supportive services must be easily accessible and available to the tenant in the PBV assisted project. Approved supportive services may include: general supportive services, education and instructional services, independent living skills, health and medical services, mental health services, substance abuse services, vocational services, and services for families. When supportive services are provided, whether on site or not, the following conditions apply: a) The statement of family responsibility in the lease agreement must contain the family’s obligation to participate in the designated service program. b) Failure of the family to comply is good cause to terminate the family from the program. c) At least one member of the family must be receiving the supportive service for the unit to remain excepted from the 25% cap.