Simi Valley: Plant Operator III (20511333) 1. Do you possess a Grade II or III Wastewater Treatment Plant Operator certificate issued by the California State Resources Control Board? Yes No 2. Do you possess a valid Class C California driver’s license? Yes No 3. Standard working hours are during the weekdays. However, are you willing and able to work nights, weekends, holidays, and on-call shifts if needed? Yes No