Pull a plumbing permit for the corrections.
Two compartment sink.
a. Glue the fitting that are not glued.
b. Support the horizontal drain to the the floor sink.
Water Heaters.
a. Replace the defective expansion tanks.
Three compartment sink.
a. Provide a 3" air gap on the drain to the floor sink.
Ice Machine:
a. Provide a 1" air-gap on the 3/8" drain to the floor sink.
Gas Line. Plug the 3/4" gas line in the cash register area.
Men's and Women's restrooms.
a. Install tempering valve at the lavatory sinks.