Can combiner be mounted on roof deck?

We have an approved plan from the city which allows for us to use a currently unused 30A circuit in my house to supply the main service panel. The approved plan specifies the Enphase combiner part, but it is not in the diagram therefore there is no location specified for it.

The house has roof deck with walls and we were thinking of mounting the combiner on the roof deck and then feed the circuit in the house from the combiner. The notes in the plan are as follows:

#10THHN FROM THE ROOF TO A JUNCTION BOX IN HOUSE, THEN SWITCH TO ROMEX

MAIN SERVICE PANEL AS THE “LOCKABLE DISCONNECT” AS PER CEC 705.22(7).

THE PV DISCONNECT AS PER CEC 705.22 IS THE SOLAR BREAKER IN THE MAIN SERVICE PANEL.

So there is no disconnect at the MSP other than the breaker, no combiner, and panel looks like a normal, non-solar service panel minus the placard.

Plan is approved but my worry is the combiner location is not specified and they come out and say we can’t mount it up on the roof deck. Whereas if that’s the case it’s probably better just to run a conduit down the side of the house but would have to redo the plan.

So is it possible to mount the combiner up on the roof deck and installed in this fashion?