I’m confused about ‘maintenance’ and ‘capital’ dredging. What is the difference?

A:
  • Regular maintenance dredging is carried out to prevent the natural occurance of silting up.  Otherwise the channel would soon be too shallow for most port operations. 
  • This dredged spoil is barged out and dumped in a hole past the entrance to the Trinity Inlet.  Dredging is carried out within strict regulations.
  • Capital dredging is a one-time project to deepen and widen part of the port.  Dumping spoil from capital dredging at sea has recently been banned.
  • Putting spoil on land is usually more expensive than dumping it at sea.

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