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Line 116:
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→Karst
Designers should consult local utility design guidance for the horizontal and vertical clearances required.
Designers should consult local utility design guidance for the horizontal and vertical clearances required.
===Karst===
===[[Karst]]===
Tree trenches designed to drain primarily by infiltration are unsuitable in areas of known or implied karst topography.
Tree trenches designed to drain primarily by infiltration are unsuitable in areas of known or implied karst topography.