Specifications include, but are not limited to: provide Portable Toilet Rental and Cleaning Service for the Frederick Maintenance Shop located in Frederick County, Maryland. -Portable Toilet, Regular - Mounted on trailers; to be serviced 3 times a week – Monday, Wednesday & Friday before 7:30 a.m. -Portable Toilet, Regular – One to be located at I-70 Eastbound MSP Weigh Station (near New Market, MD) and one at I-70 Eastbound Truck Rest Area; to be serviced 2 times a week – Monday and Thursday. -Portable Toilet, Regular – One to be located at MD180 Salt Dome, one to be located at the US40 Salt Dome, one located at the MD464 Slat Barn & one located at the MD26 Salt Barn, to be serviced 2 times a month – (by the 1st and 15th).