Specifications include, but are not limited to:. The intent of this specification is to provide for the purchase of (1) one new and unused single engine combination sewer and catch basin cleaner used for removing all debris commonly found in storm basins and leads and/or sanitary sewer lines and manhole structures using a front mounted operating station. The unit shall consist of a dual centrifugal compressor vacuum system, a hydraulically driven single piston high pressure water pump, an enclosed sealed body for storage of collected debris and equipped with a self-contained water supply as the source for the water pump system. The unit shall have the capability of operating both vacuum and water system simultaneously at full operating speeds continuously. The Dual Centrifugal Compressor system shall be powered by a hydrostatic drive system via a heavy duty transfer case