How to claifiy a permanet no-smoking signate

We recently got a mid-review for IEQp2. The exterior smoking policy of the project is entirely composed of a taped-on sheet of paper. The review team think that this signage system appears to be temporary in nature and can be easily removed, and it is not clear if the non-smoking policy will be reasonably viewable by all building occupants over time. But actually the non-smoking policy will be managed by the Property management staff to ensure that this signage system will stay there permanetly and every occupants will know this policy. What should we do to clarification this credit, or some other pernament signage should we provided?