European Commission announced in October 2008 that it expects Member States to apply the Seveso II Directive (96/83/EC) to on-shore storage of natural gas in underground natural strata, such as depleted reservoirs. This is to ensure that equivalent regulatory requirements apply across the European Union.

The UK Institute fe Occupational Safety and Health has issued a bulletin  on http://www.iosh.co.uk/index.cfm?go=groups.news_item&id=2623&sgid=17