HelloThe seperation and plugging of the lateral line was within 4 foot of the main line. It happened where the lateral line turns 90 degrees and drops several feet into the main sewer line located approximately 40 feet from the property line. The $25k included partial excavation of a two lane road and tunneling under one lane of the road, removal of 10 feet of a neighboring concrete driveway. A 10 foot concrete parking pad at the residence also had to be removed adjacent to the property line. The excavation also passed under a 2 inch natural gas branch line and a 6inch natural gas main line. The excavation depth started at approximately 5 feet at the property line and dropped to a depth of 13 feet at the 90 degree turn and then dropped another 2 to 3 feet to the main sewer line..The local municipality required all back fill under the road to be crushed stone, this excavation required over 50 tons of crushed limestone. and complete restoration of the roadway with a specific asphalt mix to a specified depth. In addition the neighboring driveway and concrete parking slab had to be replaced. This is in addition to the 50+ feet of new pipe and an additional clean out riser on the line to meed plumbing requirements for the area. The work required utility searches, permits, traffic control and shutdown for two emergency shutdown due to natural gas leaks that occured when the gas lines were uncovered and found to be extremely corroded and leaked when the earth surrounding them was removed.
When the main sewer line was worked on the house was only occupied by one person who worked long hours. Limited water usage and the length of the lateral line allowed it to fill during use and slowly leak and drain down . Two years after the work a compainin moved into the residence and when both residents were at home and using water the sewage would slowly back up into the basement of the home and then drain off. The investigation of the problem determined that the line was full of black tar like sludge up to the seperation point ndicating the blockage had been occuring for a long time