Water-tight sump-pump basin cover back-up device

A sump-pump basin cover, comprising:

• a water-tight, impermeable, non-mechanical, sump-pump basin cover, constructed for being water-tightly sealed using a gasket (18c) directly to a floor surrounding a sump-pump basin opening, further comprising,
• a first aperture through said cover to receive and engage in a water-tight manner a vertically oriented discharge pipe through which water in the sump-pump basin is pumped by a sump-pump to an outside drain providing for a water-tightly sealed water-tight sump-pump basin cover back-up device that prevents water in the sump-pump basin from flooding the floor adjacent to the sump-pump basin, while retarding the escape of pump noise, odor, and radon and other gases that are known to emanate from sump-pump basins, and
• a second aperture (16c) extending through said cover, said cover and said second aperture structured to be at or just below the floor surface, said second aperture having a removable water-tight cover (16d) so as to provide for drainage of water from the floor about the sump-pump basin into the sump-pump basin when, and only when, the water-tight cover (16d) is removed, and
• said cover comprising a first (14) and a second (12) cover section, said first section being independently removable from said sump-pump basin to provide access to the interior thereof,
• said second cover section (12) having a first cover section receiving aperture (12b) located therethrough for receiving and being water-tightly sealed to said first cover (14) section.