Our environmental activities are governed by our Corporate Environment, Health and Safety (EHS) Policy. This framework is based on documents such as the Responsible Care Global Charter of the chemical industry; it also draws on ISO 14001 and OHSAS 18001, two internationally recognized standards that govern environmental management systems as well as occupational health and safety systems. Our policy is implemented through internal guidelines such as our EHS, Security and Quality Manual.
Since 2009, we've had an ISO 14001:2004 group certificate for our environmental management system. We successfully passed the surveillance audits conducted in 2015. These audits also examined whether we were meeting the new ISO 14001:2015 requirements released in September 2015. The analysis showed that we already have good practices in place to meet all major new requirements. We plan on expanding these efforts as well as adapting our environmental management system, EHS Policy, and our EHS, Security and Quality Manual accordingly. In 2015, we furthermore had nine facilities achieve OHSAS 18001 certification for the first time.
We have set the goal of reducing our greenhouse gas emissions by 20% by 2020, relative to the 2006 baseline. All respective activities have been consolidated under our EDISON program, which was launched in 2009.