Job Description. Job Description. Salary: Based on Experience. The Landscaper Maintenance Laborer must be skilled with their hands. You must know how to operate motorized machines and tools such as weed whackers, lawnmowers, tree trimmers, blowers, electric saws. You will be providing ground maintenance to several WMATA sights the maintenance will include but is not limited to lawn mowing, mulching, tree branch removal and leaf removal. Laborers ...