Visible area means that portion of the input surface of the image receptor over which incident x-ray photons are producing a visible image.
Visible emissions means any emissions, which are visually detectable without the aid of instruments, coming from RACM or asbestos-containing waste material, or from any asbestos milling, manufacturing, or fabricating operation. This does not include condensed, uncombined water vapor.
Visible sheen means the presence of a film or sheen upon or a discoloration of the surface of the discharge. A sheen can also be from a thin glistening layer of oil on the surface of the discharge.
Visible means capable of being seen, whether or not legible, without visual aid by a person of normal acuity.
Accessible Letter(s) means the correspondence used to communicate pertinent information regarding AT&T- 21STATE to the CLEC community and is (are) provided via posting to the AT&T CLEC Online website.