My best guess is that in the distant past, a washer was down there with a hose running outside to drain.

I had a fire-hose of deals, average list time to sell a completed flip was measured in hours and days. 

Its a pump, about 150- 200, All you do is put a hose on it and have it go outside

His partner hosed him by telling his wife about the stripper girl friend, so he's not in the business any more.

They said that it was missing a hose, there was no slope, that the drain pain was too small and there should be two drain lines and not one.  

Yes, all the ideas, podcasts, books, forums that BP has available is kinda like drinking from a fire hose; overwhelming. 

.:  Hi Jacob,You seem like a newbe at this.If you can find this square space you can slip a bathroom into it.If you can find a space 6 inches longer, and your renter pool has a lot of overweight people in it, you can opt for a 60 in x 36 in shower pan setup to keep them from bumping up against the walls.Also you can easily put in a bathtub if you think you renters would rather have that (small children typically) .With no bath you may turn away renters with small children--It's unpredictable, but I think a big shower makes the space feel bigger, and with the flexi hose wand part, ladies can comfortable use it instead of a bath--although for some you may have to point that out.So for a shower, there could be downsides, with a bath less risk--that's your call.I put in a storyboard to help you think about it better.Also I swapped the window for a bathroom type window.Many say windows in a shower can be problematical, but you have one now and when showing the unit in other than winter, having that window open makes the bath feel fresh, and a surround would cover the old window.

Now the bank is hosed. 

That often leads to tenants not monitoring water usage from running toilets, kids playing with a hose and leaving it running, tenants cranking heat to 90 degrees in winter while opening windows, and more abuse stories.

This was found by a friend of ours that has a sewer inspection hose (really cool thing with a camera and a light at the end).I don’t understand how the vapor ends up getting past the trap, but it does and smells awful.