; (2) by redesignating subparagraph (B) as subparagraph (C); (3) in subparagraph (C) (as redesignated by paragraph (2) of this section), by striking subparagraph (A) and inserting subparagraphs (A) and (B) ; and (4) by inserting after subparagraph (A), the following new subparagraph: (B) contain assurances that not less than 10 percent of expenditures for services and activities the State will fund under the State program carried out pursuant to this subpart shall be for developing and providing ongoing support for a comprehensive mental health system for youth in a foster care placement that meets the requirements of subparagraph (A) and— (i) is established through partnerships with pediatricians, mental health professionals, child-serving agencies, child advocates, family groups, housing services, alternative programs that support mental health and well-being, and other key organizations to ensure youth in a foster care placement have timely access to non-pharmaceutical mental health and substance use disorder treatments and services; (ii) includes services and activities for youth in a foster care placement who are at risk of developing, or have, a mental health or substance use disorder, at the prevention, early intervention, and treatment stages; (iii) includes processes for— (I) recruiting, hiring, supervision, or training of individuals with lived experience to serve as peer specialists who deliver services to youth in a foster care placement as they navigate the child welfare system and other health and social services programs and who check in with such youth weekly; (II) training of caseworkers and other staff working within the child welfare system with a series of trauma-informed and addiction-based professional development training sessions to better connect youth with resources for treatment and services as they enter the child welfare system, including the therapeutic supports and community-based resources developed and implemented in accordance with subclause (III)