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2. 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.

3. Structural Soil - Wikipedia

   en.wikipedia.org/wiki/Structural_Soil

   Structural Soil is a medium that can be compacted to pavement design and installation requirements while permitting root growth. It is a mixture of gap-graded gravels (mostly made of crushed stone) and soil (mineral content and organic content). It provides an integrated, root penetrable, high strength pavement system that shifts design away ...

4. Soil in the United States - Wikipedia

   en.wikipedia.org/wiki/Soil_in_the_United_States

   Each year thousands of sites complete soil contamination cleanup, some by using microbes that “eat up” toxic chemicals in soil, [5] many others by simple excavation and others by soil vapor extraction, air stripping, or solvent extraction, with the choice of method influenced by the nature of the contaminants involved as well as by costs ...

5. Dump truck - Wikipedia

   en.wikipedia.org/wiki/Dump_truck

   As of 2007, a triple transfer costs a contractor about $105 an hour, while a A/B configuration costs about $85 per hour. Transfer dump trucks typically haul between 26 and 27 short tons (23.6 and 24.5 t ; 23.2 and 24.1 long tons ) of aggregate per load, each truck is capable of 3–5 loads per day, generally speaking.

6. Wayne County leader: 'Make it very, extremely expensive' to ...

   www.aol.com/wayne-county-leader-very-extremely...

   Several officials were previously concerned about the plan after the Free Press reported that Wayne Disposal will take 6,000 cubic yards of soil and concrete, and 4,000 gallons of groundwater ...

7. Universal Soil Loss Equation - Wikipedia

   en.wikipedia.org/wiki/Universal_Soil_Loss_Equation

   The Universal Soil Loss Equation (USLE) is a widely used mathematical model that describes soil erosion processes. [1]Erosion models play critical roles in soil and water resource conservation and nonpoint source pollution assessments, including: sediment load assessment and inventory, conservation planning and design for sediment control, and for the advancement of scientific understanding.