I'm in need of some work on our house. We live on Major Rd in Sharpsburg (North Sharpsburg - between Fischer and Minix Rd). It will involve building a retention wall and staircase from our driveway down to our backyard. We have reason to believe that our builder burried our septic tank over six feet deep. They added backfill after the septic install was signed off by the county. A 6+ foot riser to the two openings wont work. I'm thinking...excavate, find the tank, using a retention wall, we could leave just a 12" riser down to the two openings. Its a steep dropoff from the driveway to the backyard so I wanted a staircase anyway. The builder will have to excavate and install the riser and main retention wall on his dime. The staircase would be on my dime.
I'm in need of some advice and an estimate.