ISO TC59 SC17 WG3 is currently working on the development of an ISO Standard, ISO 22057 to provide a format for EPD for use in BIM, following the principles of ISO 23386 and ISO 23387 for data templates, data dictionaries based on ISO 12006-3 and IFC and data sharing according to ISO 16739.
The aim is to provide a common digital format for EPD (using either EN 15804 or ISO 21930) so that they can be used in BIM and Building LCA tools as you suggest.
The DIS draft will be available for comment through National Standards Bodies in the Autumn.