[jyl]

House has a full basement, unfinished. Main stack is in basement, 25' further from the street than the corner of the house shown (in the second picture, if you go to the corner of the house, turn left, walk 25' through the foundation/basement walls, that's about the location).

The trees are important. The street is busy, and the trees provide a noise shield and privacy. Not having them would reduce my property value noticeably. So I'm very motivated to not damage them. Obviously sewage comes first but ideally both aims could be met.