590.124—Schedule of operation of official plants.
Operating schedules for an official plant shall be subject to approval of the Administrator. The normal operating schedule shall consist of a continuous 8-hour period per day (excluding not to exceed 1 hour for lunch), 5 consecutive days per week, within the administrative workweek, Sunday through Saturday, for each full shift required. Clock hours of daily operations need not be specified in a schedule, although as a condition of continuance of approval of a schedule, the hours of operation must be reasonably uniform from day to day.