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2. Percolation test - Wikipedia

   en.wikipedia.org/wiki/Percolation_test

   Percolation test. 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.

3. Septic drain field - Wikipedia

   en.wikipedia.org/wiki/Septic_drain_field

   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]

4. Solid Waste Authority of Central Ohio - Wikipedia

   en.wikipedia.org/wiki/Solid_Waste_Authority_of...

   Website. www.swaco.org. The Solid Waste Authority of Central Ohio (SWACO) was established by the Ohio General Assembly in 1989 as part of Ohio House Bill 592, which created Ohio’s current solid waste management planning and regulatory programs. [1][2] SWACO is a government-run entity responsible for the safe and sanitary management of all ...

5. Frost line - Wikipedia

   en.wikipedia.org/wiki/Frost_line

   The frost line —also known as frost depth or freezing depth —is most commonly the depth to which the groundwater in soil is expected to freeze. The frost depth depends on the climatic conditions of an area, the heat transfer properties of the soil and adjacent materials, and on nearby heat sources. For example, snow cover and asphalt ...

6. Battelle Memorial Institute - Wikipedia

   en.wikipedia.org/wiki/Battelle_Memorial_Institute

   US$ 6.2 billion [1] Number of employees. 3,200. Website. www.battelle.org. Headquarters in Columbus. Battelle Memorial Institute (or simply Battelle) is a private nonprofit applied science and technology development company headquartered in Columbus, Ohio. The institute opened in 1929 but traces its origins to the 1923 will of Ohio ...

7. Haitians, residents in Springfield, Ohio, respond to being at ...

   www.aol.com/haitians-residents-springfield-ohio...

   September 11, 2024 at 6:43 AM. SPRINGFIELD, Ohio — This Ohio city is in the middle of a heated political conversation about immigration after President Donald Trump and his running mate, Ohio ...