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2. Fill dirt - Wikipedia

   en.wikipedia.org/wiki/Fill_dirt

   Fill dirt is taken from a location where soil is being removed as a part of leveling an area for construction; it may also contain sand, rocks, and stones, as well as earth. Fill dirt should be as free of organic matter as possible since organic matter will decompose creating pockets of empty space within the fill which could result in settling.

3. List of Superfund sites in Tennessee - Wikipedia

   en.wikipedia.org/wiki/List_of_Superfund_sites_in...

   This is a list of Superfund sites in Tennessee designated under the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) environmental law. The CERCLA federal law of 1980 authorized the United States Environmental Protection Agency (EPA) to create a list of polluted locations requiring a long-term response to clean up hazardous material contaminations. [1]

4. Topsoil - Wikipedia

   en.wikipedia.org/wiki/Topsoil

   Topsoil is composed of mineral particles and organic matter and usually extends to a depth of 5-10 inches (13–25 cm). Together these make a substrate capable of holding water and air which encourages biological activity. There are generally a high concentration of roots in topsoil since this is where plants obtain most of their vital nutrients.

5. Unified Soil Classification System - Wikipedia

   en.wikipedia.org/wiki/Unified_Soil...

   The Unified Soil Classification System (USCS) is a soil classification system used in engineering and geology to describe the texture and grain size of a soil. The classification system can be applied to most unconsolidated materials, and is represented by a two-letter symbol. Each letter is described below (with the exception of Pt): If the ...

6. Should You Use Banana Peels In The Garden? Experts Weigh In - AOL

   www.aol.com/lifestyle/banana-peels-garden...

   Experts Weigh In. Lauren David. September 3, 2024 at 6:04 PM. It's not as straightforward as you may think. Getty Images. You've likely heard that burying banana peels in your garden is a good way ...

7. AASHTO Soil Classification System - Wikipedia

   en.wikipedia.org/wiki/AASHTO_Soil_Classification...

   The AASHTO Soil Classification System was developed by the American Association of State Highway and Transportation Officials, and is used as a guide for the classification of soils and soil-aggregate mixtures for highway construction purposes. The classification system was first developed by Hogentogler and Terzaghi in 1929, [1] but has been ...