Ethics Committees in Community Mental Health Settings?

I am in the process of trying to organize an ethics committee at a large community mental health center in Central Massachusetts and am seeking advice from anyone with experience in this or a similar milieu. The agency is a large (almost 700 employees), nonprofit, community-based program that operates under the auspices of a broad, academically affiliated, behavioral health system. An independent board of trustees, responsible to the parent organization governs the agency. The agency primarily provides outpatient care and treatment to adults and children with mental health, substance abuse, developmental disabilities, and homelessness issues. It does not provide any psychiatric emergency or acute in-patient mental health services but does operate an inpatient detoxification unit for substance abuse treatment and “first offender” DUI program. Additionally, the agency has a vast network of residential programs and transitional facilities for individuals with a history of chronic mental illness and substance abuse problems. Outpatient medical care is also provided to homeless clients who reside in area shelters (including a “wet” shelter for men and women) and a large number of clients who have HIV/AIDS and/or who have been dually diagnosed (substance abuse and mental illness), and are part of a scattered-site supportive housing program.