S.C. Code Ann. § 44-15-40

At the beginning of each fiscal year the Department of Behavioral Health and Developmental Disabilities shall allocate available funds to the mental health programs for disbursement during the fiscal year in accordance with such approved plans and budgets. The department shall, from time to time during the fiscal year, review the budgets and expenditures of the various programs, and if funds are not needed for a program to which they were allocated, it may, after reasonable notice and opportunity for hearing, withdraw such funds as are unencumbered and reallocate them to other programs. It may withdraw funds from any program which is not being administered in accordance with its approved plan and budget.