Not sure what you think an "Environmental Service Aide" position is, but in case you don't, you do know it is a cleaning position. It is a new fancy word for janitor, so obviously there is demand for it like cleaning up a fast food business, or cleaning up a retail establishment. You can clean up motels, or hotels. You can work for the city and perform various janitorial position functions.
Here are other titles for "Environmental Service Aide":
Housekeeper, Environmental Services Worker, Housekeeping Laundry Worker, Environmental Services Aide, Housekeeping Aide, Cottage Attendant, Room Cleaner