EASA are in the process of amending EU OPS 1 to become EASA OPS 1. The notice of proposed amendment went out some time ago. The comment response document is due out literally any day now. This will show which comments on the proposed implementing rules have been adopted and which have not.
Until then the latest EU OPS 1 doc rules. It was a transposition of JAR OPS 1 with little or no major changes.
Hope this helps, and yes their website sucks.
Sir George Cayley