39.1. Sections: An above-ground sand-filter bed may be constituted of only 1 section or be built in several sections having the same area.Notwithstanding the foregoing, the minimum distance between the sections must comply with the standards in the following table, according to the permeability of the disposal site:
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Permeability of Minimum distance between
the disposal site sections (metres)
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High permeability soil 1.2
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Permeable soil 2.5
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Low permeability soil 5.0
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