HUD requirements for termite inspection

Is the termite inspection required for the entire public housing complex? Or can select units representing a certain percentage of the complex be inspected thereby representing the entire complex? I am searching for a Federal Register document to help me answer these questions.

Both of these seem like good places to look. Neither appears to have the answer. But I didn’t have time to go through them thoroughly.

http://www.hud.gov/offices/pih/publications/notices/06/pih2006-11.pdf
http://www.hudclips.org/sub_nonhud/cgi/pdfforms/HUDGB7.pdf