Embodiments of the present disclosure describe a raceway comprising a sloped base with an apex, a divider extending upward from the apex, two side walls, each opposing and parallel to the divider sufficient to form two elongated channels on the sloped base； and at least two tapered ends in fluid communication with the channels, each tapered end including an end wall, a pit, and a sloped floor extending from the sloped base to the end wall or pit.
