| 21. | That can help decompose organic matter and prevent silt buildup.
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| 22. | Prehistoric formations were covered with silt when a sea flooded the area.
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| 23. | The smoke from a thousand fires hung over the asphalt like silt.
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| 24. | Your tide pulls the silt over the side with it.
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| 25. | And it's graveled, not choked with silt.
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| 26. | Wash away any accumulated silt or leaves with a hose.
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| 27. | Then rake or shovel off the silt to the previous ground level.
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| 28. | It is the first tunnel built in the silt of southeast London.
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| 29. | If trapped, they will tag it and relocate it near Silt.
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| 30. | Most of what they dug up under tons of silt were houses.
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