Abstract: A mobile fluid storage tank having a base, a substantially vertical front wall, a substantially vertical rear wall, a pair of substantially parallel vertical sides walls, and a roof. The roof has a rear roof portion and a front roof portion. The rear roof portion extends across the rearward portion of the side walls, while the front roof portion is comprised of two different portions, a sloped portion and at least a two-stepped portion. The sloped and step portions are substantially parallel to each other. The stepped portion is comprised of at least two steps. The storage tank also has an inclined stairway attached to the front wall and extending from the stepped portion adjacent one side wall downwardly to the base portion adjacent the opposite side wall.
Abstract: The invention is directed to an improved cover for a waste container composed of multiple formed cover sections, the cover sections interlock to fluid proof seal. The cover sections have a cross section which induces fluids to flow outwardly off of the cover sections, thereby preventing fluids from leaking into the material within the container. The cover sections are secured on the container by their own weight and are stackable, providing for compact storage when not in use.