Tank stays full almost to the top with water - waste floats and sinks quickly - but because the water level is so high all the time , I'm sure that some of the waste has been deposited out into the drain-field. The leech lines sit right along side a monster of a maple tree , new 8 inch lines where installed about 8 years ago and 2 years ago I added about 40 feet of additional 12 inch infiltrator pipe. But I believe the tree has probably filled everything up with roots as the old leech lines where so root impacted that not even light could penetrate. So when weather permits I would like to run a new 4 inch solid line to the back yard where the maple trees are 60 - 70 feet away. The solid line would run about 60 - 70 feet - I would make sure line is level with min. fall & would hook up 4 runs of 12 inch infiltrator pipe 60 feet for each run. My soil is a gravely mixture that drains beautifully even after heavy rains. I would not abandon the front lines , but maybe treat them with a root kill and let them hopefully recover My question is - is there a distance limit on how far away the leech line can be from the septic tank?

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