An amalgam separator system shall not be required for the offices or clinical site of:
A. a dental office that is not engaged in amalgam placement, removal or modification;
B. an orthodontist;
C. a periodontist;
D. an oral maxillofacial surgeon;
E. an oral maxillofacial radiologist;
F. an oral pathologist; or
G. a portable dental office without a fixed connection for wastewater discharge.