Commission Recommendation of 30 May 2008 on risk reduction measures for the substances 2,3-epoxypropyltrimethylammonium chloride (EPTAC), (3-chloro-2-hydroxypropyl) trimethylammonium chloride (CHPTAC) and hexachlorocyclopentadiene (notified under document number C(2008) 2316) (Text with EEA relevance)