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.
Generally, the septic tank is located approximately 10 to 15 feet downhill from the house. Probe with a metal rod, pushing it gently into the ground to locate the gravel drain field. The leach lines usually are 6 to 18 inches below the surface of the soil. Work your way out and away from the house.enerally, the septic tank is located approximately 10 to 15 feet downhill from the house. Probe with a metal rod, pushing it gently into the ground to locate the gravel drain field. The leach lines usually are 6 to 18 inches below the surface of the soil. Work your way out and away from the house.