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2. Bioretention - Wikipedia

   en.wikipedia.org/wiki/Bioretention

   Runoff passes first over or through a sand bed, which slows the runoff's velocity, distributes it evenly along the length of the ponding area, which consists of a surface organic layer and/or groundcover and the underlying planting soil. Stored water in the bioretention area planting soil exfiltrates over a period of days into the underlying ...

3. Compost - Wikipedia

   en.wikipedia.org/wiki/Compost

   Although it is rarely used alone, plants can flourish from mixed soil that includes a mix of compost with other additives such as sand, grit, bark chips, vermiculite, perlite, or clay granules to produce loam. Compost can be tilled directly into the soil or growing medium to boost the level of organic matter and the overall fertility of the soil.

4. Rain garden - Wikipedia

   en.wikipedia.org/wiki/Rain_garden

   The sandy soil (bioretention mixture) cannot be combined with a surrounding soil that has a lower sand content because the clay particles will settle in between the sand particles and form a concrete-like substance that is not conducive to infiltration, according to a 1983 study. [24]

5. Slow sand filter - Wikipedia

   en.wikipedia.org/wiki/Slow_sand_filter

   However, some slow sand filter operators use a method called "wet harrowing", where the sand is scraped while still under water, and the water used for cleaning is drained to waste. For municipal systems there usually is a certain degree of redundancy , since it is desirable for the maximum required throughput of water to be achievable with one ...

6. AOL Mail

   mail.aol.com

   Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

7. Soil moisture - Wikipedia

   en.wikipedia.org/wiki/Soil_moisture

   The amount of water remaining in a soil drained to field capacity and the amount that is available are functions of the soil type. Sandy soil will retain very little water, while clay will hold the maximum amount. [29] The available water for the silt loam might be 20% whereas for the sand it might be only 6% by volume, as shown in this table.

8. Sand filter - Wikipedia

   en.wikipedia.org/wiki/Sand_filter

   Larger sand grains can be used to overcome this problem, but if significant amounts of large solids are in the feed they need to be removed upstream of the sand bed filter by a process such as settling. [5]: 302–303 The depth of the sand bed is recommended to be around 0.6–1.8 m (2–6 ft) regardless of the application.

9. Can I use sand as cat litter? We asked a vet to find out! - AOL

   www.aol.com/sand-cat-litter-asked-vet-120000565.html

   Cons: 1. Limited absorbency Sand is not as absorbent as the best cat litter, which can lead to excess moisture in the litter box.. 2. Poor odor control Sand does little to neutralize odors ...