The major EDI problem was due to B1 being under water therefore u/s. Each 06 departure had to wait for the inbound to vacate before entering at C1 and backtracking the whole length ahead of the next inbound.....15 mile spacings required (not to mention the ground movement nightmares), hence the holding. Coupled with all the other problems (ATIS, G/P,twys) a fun 16 hours!
BTW a big cheers to the crews who didn't complain, also TLA and GAL for the reciprocal runway coordinations.......