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.
1 Most counties and states require a building permit for installing or replacing a septic system, at a cost of $250-$1,000 or more depending on the location and the complexity of the project.ype: treating the leach field. I had a septic company come to do a septic tank pump for $150 but they said I needed a more expensive leach field treatment at a cost of over $2500 even thought there is no back up or smell anywhere.