That is quite possibly the ugliest setup I've seen for submersible relays. The dispenser power could be feed from another panel since there aren't any neutral disconnect breakers seen in the panel. But they might have just fed them with regular breakers by looking at the rest of the setup. I see there are some two pole breakers for the submersibles.
Why can you not replace those seal with vertical/horizontal seals, then run down to gutter?
The credit card/pump control wires running to the Verifone box should be a twisted pair according to Wayne and Gilbarco specs, but I don't know what dispensers your working with.
I'd be curious to see where they brought in their sump sensor, line leak, double wall sensor, and tank probe conduits also. If they have a tank monitor on site anyway.