| Industrial Electrician 1 (Wastewater) | Civilian |
| Industrial Electrician 2 (Wastewater) | Civilian |
| Industrial Maintenance Mechanic 1 (Wastewater) | Civilian |
| Industrial Maintenance Mechanic 2 (Wastewater) | Civilian |
| Industrial Occupational Safety Specialist (Wastewater) | Civilian |
| Industrial Occupational Safety Supervisor (Wastewater) | Civilian |
| Inspector 1 | Civilian |
| Inspector 2 | Civilian |
| Inspector 3 | Civilian |
| Integrated Library System Tech | Civilian |