It can be found in many different types of soil, including : highly porous soils, some silt and clay soils, and especially very sandy soils.
22.
There were also engineering problems with few sources of water to tap into, compounded by porous soil on the summit level, which led to water shortages.
23.
An example of climate resilience provided by nature is the manner in which porous soil more effectively allows for the drainage of flood water than more compact soil.
24.
Howell said, " and if the water table is low, you don't even get the benefit of the water percolating up, as it will in porous soils ."
25.
Mixed with 15 percent compost and 30 percent sand, this porous soil ( www . stalite . com; 877-737-6284 ) has to be fertilized about once a month.
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Even environmentalists embrace this part of the plan, because storage of water below ground in the sandy, porous soil here is generally considered less damaging to the surroundings than reservoirs.
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Scientists now say that MTBE, if gasoline leaks from underground storage tanks at service stations or otherwise gets into the environment, moves quickly into groundwater-- a problem particularly severe in some rural areas with porous soil and heavy reliance on wells for drinking water.
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The mechanism of the formation of patterned ground had long puzzled scientists, but the introduction of computer-generated geological models in the past 20 years has allowed scientists to relate it to frost heaving, the expansion that occurs when wet, fine-grained, and porous soils freeze.
