transitive. 1  To reverse the winding or twisting of: unwind a ball of yarn. 2  To separate the tangled parts of; disentangle. 3  To free (someone) of nervous tension or pent-up energy.
A leach field is an important part of a septic system. It disperses fluid from the septic system over a large area of soil adjacent to the building it services.he distribution box has another pipe that leads to the leach field. From this pipe, you will dig the trenches. Decide where to dig your trenches. You will need to dig three trenches, each about 12 inches wide and 20 feet long.
Because each home's leach field and septic system is different, pricing a leach field replacement is done on a case-by-case basis. As a ballpark, a backhoe operator can excavate about 9.5 linear feet of soil per hour to dig a new leach pit, while a typical installer can install about 12 feet of leach line per hour.