You must submit an Architectural Change Request and wait for written approval BEFORE proceeding.
From covenants section VIII:
VIII. T. Swimming Pools. No above ground swimming pool extending twelve (12) inches or more above the finished grade of the Lot shall be permitted upon any Lot except that this Article VIII, Paragraph S shall not be intended to prohibit the installation of a hot tub or sauna.
Full covenants section is here.