(a) Verifying that all information required by § 3282.603 has been submitted by the manufacturer;

(b) Reviewing and approving the manufacturer's designs, quality control checklist, site inspection checklist, site completion instructions, and quality assurance manuals for site work to be performed;

(c) Maintaining all records and approvals for at least 5 years;

(d) Revoking or amending its approvals in accordance with § 3282.609; and

(e) Reviewing its approvals under this section at least every 3 years or more frequently if there are changes made to the Manufactured Home Construction and Safety Standards, 24 CFR part 3280, to verify continued compliance with the Standards.