Construction. Activities which produce new capital improvements and increase the 
value of usefulness of existing property. 
Code of Federal Regulations / Title 50 - Wildlife and Fisheries / Vol. 9 / 2013-10-01635

Suggested:

Construction means the act of building or significantly altering, renovating, or repairing a structure. In CVA, construction includes actions that create infrastructure for a pumpout facility, such as docks, gangways, floats, slips, and boats.