15A NCAC 11
... adequate radiation survey and radiation measurement equipment appropriate to ... (D) samples of three reports of diagnostic radiation output measurements; and ...
http://reports.oah.state.nc.us/ncac/title%2015a%20-%20environment%20and%20natural%20resources/chapter%2011%20-%20radiation%20protection/15a%20ncac%2011%20.0213.html