| 21. | We built retaining walls and mud-flow channels and took other steps.
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| 22. | Stones from an excavation can be used in a retaining wall.
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| 23. | Then build a retaining wall to hold back the high ground.
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| 24. | Concrete piers were poured behind retaining walls to protect them from outward pressure.
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| 25. | The approaches include a considerable retaining wall on the Maldon side.
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| 26. | The contracts were for rebuilding a retaining wall that collapsed in December 2001.
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| 27. | Whatcom and Thurston counties have cracked down on building bulkheads and retaining walls.
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| 28. | The stone retaining wall had projecting stone towers spaced about every.
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| 29. | No, the retaining wall didn't have to be replaced, he said.
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| 30. | This erosion needs to be checked by building a retaining wall.
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