We had a scam artist well known in community plumbing company come out and show us a video of our Aspen entangled septic line. For $8000 we could have it dug up and replaced. Thank heavens we called Pro Plumbing . They scanned our line for $325 dollars and there was no such problem. The movie they made was not our line. Pro Plumbing is nice . They show up on time. reasonably priced and ethical .