| 1. | It may also carry away soluble materials in the surface drainage waters.
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| 2. | Surface drainage must be allowed for precipitation to drain away from the structure.
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| 3. | In the long run surface drainage can help to reclaim acid sulfate soils.
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| 4. | Checked surface drainage systems are also found in terraced lands used for rice.
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| 5. | The sewers were mainly for the removal of surface drainage and underground water.
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| 6. | Concrete rectangular drains were installed along the road for the road surface drainage system.
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| 7. | There are a number of surface drainage features in the vicinity of the stream.
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| 8. | For example, a city project to improve surface drainage would indirectly aid the urban poor.
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| 9. | Q . I had to have a sub-surface drainage system installed in my yard and around the foundation.
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| 10. | Surface drainage is generally good with almost all the rivers being seasonal, notably river Aya and river Be.
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