The City may withhold or cause to be withheld from the contractor so much of the accrued payments as may be considered necessary:to pay such laborers, mechanics, and apprentices employed by the contractor or any subcontractor the full amount of wages required by the provisions of this subtitle; and to satisfy any liability of any contractor or subcontractor for any penalties as provided herein. The City may also withhold payments from any contractor who has failed to post and keep posted a copy of the regular hourly rates as required herein, until such default shall have been corrected. City Code, 1976/83, art. 1, §19(f) Ord. 67-969 Ord. 73-348