HUD shall periodically review PHA performance in carrying out its approved modernization program to determine compliance with HUD requirements, the adequacy of a PHA's inspections as evidenced by the quality of work, and the timeliness of the work. HUD's review may be conducted either in-office or on-site. Where conducted in-office, a PHA shall forward any requested documents to HUD for post-review. Where deficiencies are noted, a PHA shall take such corrective actions as HUD may direct.