Facilities - Environmental Services (EVS) Technician (Graveyard) Three Rivers Casino ResortFacilities - Environmental Services (EVS) Technician (Graveyard)ORThe Graveyard Environmental Services Technician (EVS Tech) is responsible for maintaining the cleanliness of Three Rivers Casino by completing various cleaning tasks. While performing the duties of this job, Team Members may be exposed to secondhand tobacco smoke, including regular exposure for those working on the casino floor.