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A septic drain field, a septic tank, and associated piping compose a septic system. The drain field typically consists of an arrangement of trenches containing perforated pipes and porous material (often gravel) covered by a layer of soil to prevent animals (and surface runoff) from reaching the wastewater distributed within those trenches. [1]
Unlike the traditional septic system, the aerobic treatment system produces a high quality secondary effluent, which can be sterilized and used for surface irrigation. This allows much greater flexibility in the placement of the leach field, as well as cutting the required size of the leach field by as much as half. [1]
A percolation test (colloquially called a perc test) is a test to determine the water absorption rate of soil (that is, its capacity for percolation) in preparation for the building of a septic drain field (leach field) or infiltration basin. [1] The results of a percolation test are required to design a septic system properly.
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The leaching process in a salty soil to be reclaimed is illustrated in the leaching curves of figure 1, derived from data of the Chacupe pilot area, Peru. [2] It shows the soil salinity in terms of electrical conductivity (EC) of the soil solution with respect its initial value (ECi) as a function of amount of water percolating through the soil.
A total of 0.345 square miles (0.89 km 2) of the watershed of South Branch Leach Creek is situated within coal measures, which are common in a band running from west-central Lackawanna County to northeast Lackawanna County. [3] [4] A mid-20th-century report listed the creek as being part of the North 3 Watershed, along with several other creeks ...
Hayfield Township is a township in Crawford County, Pennsylvania, United States. The population was 2,774 at the 2020 census, [3] down from 2,940 at the 2010 census. [4]
Leach Creek is a tributary of Leggetts Creek in Lackawanna County, Pennsylvania, in the United States. It is approximately 1.9 miles (3.1 km) long and flows through Scranton. [1] The watershed of the creek has an area of 2.55 square miles (6.6 km 2). The creek loses substantial amounts of water to underground mine pools.