Patent ID: 7540295

Claim:
A low profile wash liquid and debris containment system comprising: a flat wash pad which rests upon a ground level surface, the wash pad comprising: a first side and a second side; and a top liquid impervious surface, said surface being impervious from the first side to the second side, said surface spanning continuous to at least one peripheral non-central pad edge upon which to position a debris-carrying vehicle or other item to be washed, said surface being configured to provide an area upon which the vehicle is supported on top of the surface between the first side and the second side such that flow of wash liquid and debris drains to the pad peripheral edge to prevent buildup of debris on the impervious surface; a peripheral edge collecting trough immediately above the ground level surface and extending along and in liquid and debris communication with the peripheral non-central edge of the surface to which liquid and debris flow from the top surface; the impervious top surface being slightly above ground level accommodating placement of the peripheral edge collecting trough below the top peripheral edge of the top surface and above the ground level surface; a drip edge positioned between the peripheral edge of the top surface and the peripheral edge collecting trough; the peripheral edge collecting trough comprising at least one weir positioned within the peripheral edge collecting trough to facilitate settlement of solids in the collecting trough.