Whoever shall be found guilty of violating the regulations in this part while on the property is subject to a fine of not more than $50 or imprisonment of not more than 30 days, or both (see 40 U.S.C. § 318c). Nothing contained in these regulations shall be construed to abrogate any other Federal laws or regulations of the District of Columbia applicable to the property referred to in § 407.2 and governed by the regulations.