System and method for grease containment with water draining utility

A grease containment apparatus arranged to receive grease from a rooftop grease exhauster, the grease containment apparatus comprising:

• a plurality of trough sections including multiple corner trough sections and at least one trough or runner section intermediately arranged and sealingly engaged between the multiple corner trough sections, wherein the plurality of trough sections comprise polymeric materials;
• a plurality of hangers joined to the rooftop grease exhauster or a support structure thereof, and arranged to support the plurality of trough sections in an elevated position relative to a roof surface, wherein each hanger comprises multiple bends to impart flexibility in supporting the plurality of trough sections;
• and
• flashing extending over or across the plurality of hangers and arranged to direct grease received from the rooftop grease exhauster into the at least one trough section;
• wherein the grease containment apparatus includes at least one of the following features (i) to (iv):
• (i) at least one trough section comprises a drain aperture and a removable drain plug arranged to seal the drain aperture;
• (ii) each trough section of the plurality of trough sections is devoid of grease absorbent material;
• (iii) at least one trough section comprises a drain aperture and a drain conduit or drain assembly coupled to the drain aperture, and wherein at least a portion of a flow path defined by the drain conduit or drain assembly is elevated above a bottom wall of the at least one trough section;
• and
• (iv) at least one trough section comprises a drain assembly arranged to drain fluid from the at least one trough section, the drain assembly comprising (a) an inner conduit disposed within an outer conduit, the outer conduit including an inlet opening, and the inner conduit including an inlet opening and an outlet opening, wherein the inlet opening of the inner conduit is disposed above the inlet opening of the outer conduit, and is further disposed below the upper end of the outer conduit;
• (b) a first flow passage extending between the inlet opening of the outer conduit and the inlet opening of the inner conduit;
• and (c) a second flow passage extending between the inlet opening of the inner conduit and the outlet opening of the inner conduit.