Clean, without direct supervision, plant-wide in Environmental Zone 3 (areas in exposed product rooms that are away from product contact surfaces; walls, sinks, forklifts, etc.).Clean, without direct supervision, plant-wide in Environmental Zone 4 (areas outside of rooms where there is exposed products; warehousing, racks, floors, walls, etc.). With direct supervision from a Level 4 Sanitation Worker (Team Leader), or above, clean in Environmental Zone 1 (food contact surfaces, belts, elevators, shakers, etc.) and Zone 2 (areas immediately adjacent to food contact surfaces; framework, aprons, items directly over food contact areas, etc.) in pre-blanch areas ONLY (Level 2 sanitation work).