Since August 2003, the AP002 (AP = anti-pollution) emulsion treatment station at Issoire, France, has allowed the Alcan Aerospace, Transportation and Industry business unit to treat 20 cubic metres per day of rolling oil and used oils from other shops.

Opened at a cost of approximately US$1 million, the station complies with current environmental standards, which the former SATIM incinerator that was dismantled in November 2004 could not meet. The treatment involves separating oil from water, followed by a biological process to reduce chemical oxygen demand. The water is tested in the station's laboratory before being discharged into the Allier River. The process thus separates water, reusable oils, and sludge that is sent to treatment facilities.

Running the emulsion treatment centre is a full-time job. In addition to monitoring the station, the operator is responsible for tests and waste disposal.