Newbie to the forum here. Will upload photos this evening, but thought I'd start with the question/context:
Just bought a fixer upper farmhouse in Portland, OR area. House is at least 1930s, could be older (long story). We also don't know if it was originally post and beam with foundation added later, but it's safe to assume that the house's sewer connection was only added in the late 40s/early 50s when the surrounding farm land became a neighborhood.
The house sits on half crawlspace, half unfinished basement. In the basement area, the sewer line leaves the foundation approx. two feet up the wall, then runs approx. 19 feet to the sewer main. A sewer scope has shown this line to be clean. There's an exterior clean-out, but the plumber couldn't find it.
Back inside, there is also a basement floor drain (below the sewer outtake). It appears to be old galvanized, and does not have a p-trap bypass. To me, this suggests it's not sewer, but after sucking with a shop-vac over the pipe opening it certainly smelled like sewer. I poured ~1 gallon of water down the hole and it drained well. There is a lot of visible debris, though.
Additionally, there are two 2" PVC pipes that drop vertically into the floor of the basement (again, below the sewer outtake). One is a drain for both the bathroom sink (upstairs) and the washer (in basement); the other appears to be a vent (goes up through the floor), but am still trying to determine. There is no sump/sewer pump in the basement.
One last detail: public records of the local sewer system indicate that my property has two sewer laterals. I have no idea where the second one goes, but it appears to be further away from the house.
My question(s), then: Is it possible the floor drain and 2" PVC pipes connect to the main sewer line out of the house? Aside from scoping them (the original scope didn't inspect these), is there an easy way to find out? Alternatively, could they go to the second mystery sewer lateral, or to a drywell?
Thanks everyone, apologies for the novel.