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.
Even a decorative garden pond may be affected by the bacteria and nutrients from a leach field, especially if it's downhill from the septic system. In general, a pond and the leach lines of your septic system should be separated by 50 to 100 feet, depending on your local building codes.our local building permit office usually has a form that explains not only how to apply for a septic system permit, but also provides the minimum setbacks. In general, leach fields must be 100 feet from streams, rivers, water supply wells, oceans, lakes or reservoirs.