Repeated emission spikes during truck loading were traced to oxygen entering the vapor recovery unit and shutting it down. Rerouting the vapor line fixed it.

Emissions were climbing even though the flare's temperature looked normal, tracing back to a blower without proper feedback control. Fixing the airflow balance brought emissions back down.

A failing regulator, a leaking hatch, and corroded seals were compounding emissions before equipment damage set in. Catching it early avoided about $9,000 in costs.