ACLS in telemetry or intermediate care units

What are your hospital or unit policies or norms for the percentage of ACLS nurses on any given shift when ACLS is required for your unit.

For example, I manage a 12 bed intermediate care unit. ACLS is required for my nurses. When we have sick calls the float pool nurses that cover the unit do not have ACLS. I'm wondering if there are other units in this same situation and what percentage of non-ACLS trained nurses would be appropriate and safe for patient care?

Thanks!