I've installed wastewater pumping stations for the last 15 years and have never seen a "Walt Disney" application like this one. Not only does it present an obvious trip hazard to the operators working around the wetwell, but is also subject to physical damage, and operator error. And after further review of the '05 NEC believe there are issues in 501.10(A)(2)& 501.140 & 504.30 that cover the installation.
