Principal Plant Operator This position is for a Principal Plant Operator, night shift (6pm-6am), focusing on plant operations at Chesterfield County's wastewater treatment plants. The Principal Plant Operator will perform all operational aspects required to maintain compliance with federal, state and local regulations governing wastewater treatment. This requires observations and/or adjustments of physical, chemical, and biological treatment processes at the wastewater treatment plant. This includes but is not limited to the following: Operate process equipment and systems associated with wastewater treatment. Monitor the Supervisory Control and Data Acquisition System (SCADA). Observe and record process trends related to equipment operation and plant performance on daily log sheets. Monitor and adjust process control instrumentation. Inventory chemicals and inspect chemical dosing pumps and storage tanks. Ensure proper operation of samplers, collect process monitoring samples ...