13 C.F.R. § 108.1830 – NMVC Company's Capital Impairment definition and general requirements.

(a) Significance of Capital Impairment condition. If you have a condition of Capital Impairment, you are not in compliance with the terms of your Leverage. As a result, SBA has the right to impose the applicable remedies for noncompliance in § 108.1810(g).
(b) Definition of Capital Impairment condition. You have a condition of Capital Impairment if your Capital Impairment Percentage, as computed in § 108.1840, exceeds 70 percent.
(c) Quarterly computation requirement and procedure. You must determine whether you have a condition of Capital Impairment as of the end of each fiscal quarter. You must notify SBA promptly if you are capitally impaired.
(d) SBA's right to determine NMVC Company's Capital Impairment condition. SBA may make its own determination of your Capital Impairment condition at any time.