I recently purchased a home and am finishing the basement. A bathroom was roughed in, with an ejector system. My question is about the connections for the tub. The overflow pipe comes up through the slab, and connects to a T junction below the slab. One side of the T goes to the ejector pump, the other side is open, for connecting the tub drain. My concern is that there is no trap on the overflow, and the plumbing inspector has confirmed that every fixture needs to be trapped (though he hasn't looked at my setup in person). Can anyone tell me why the system is connected this way, and how I might fit a trap in here? Thanks!