Specifications include, but are not limited to: qualified Plumbing Contractors that have both a skilled workforce and appropriate equipment to complete various work assignments on a time and material bases. The work that may be required under this invitation includes both routine work that would be done during normal work hours (Monday – Friday 7:00am to 4:00pm) and emergency or high priority work that would need to be done on nights, weekends, or holidays. Hourly rates are to be designated for normal work hours and a separate rate for nights, weekends or holidays. All engagements outside of normal work hours will be paid as minimum 4-hours, with each hour thereafter being charged at the normal hourly rate for after hour work.