Marvelous Mark recently replaced about 50 feet of old cast iron sewer line as well as the 14 corroded return air duct that was lying over the sewer line on the dirt in the very tight crawl space under our house. He did this in a day and a half and managed to leave one of our bathrooms functioning at all times. He was so pleasant, considerate, hard-working, and reasonably priced!The cost was under $100 per linear foot , whereas we had received a bid from another company that was 5 times more for replacement of the sewer line and over 3 times more for a trenchless repair (which, BTW, would not have uncovered the large hole in the return air vent leading to the furnace.) How refreshing to find an honest, decent plumber who does excellent work at a fair price. We are so grateful to Mark and to our friend who gave us the referral!