A. GENERAL REQUIREMENTS The contractor shall furnish all materials, equipment, gauges, pumps, etc. for performing work under this item. For sewer construction projects (new or rehabilitation), a sketch will be required to show any deviation from the design drawings. B. PIPE CLEANING The Contractor may elect to use either high velocity jet, or mechanically powered equipment, as described in the NASSCO Standard Specifications. Selection of equipment shall be based upon field conditions such as access to manholes, quantity of debris, size of sewer, depth of flow, etc. All sludge, dirt, sand, rocks, grease, and other solid or semisolid material resulting from the cleaning operation shall be disposed of in accordance with all applicable regulations and in a method acceptable to the Owner. Pipe cleaning shall be performed in advance of pipe television inspection. The Contractor shall be responsible for the legal disposal of all debris removed from the sewers during the cleaning operation including any costs incurred. The Contractor shall not expect the Owner to provide a dump site. Acceptance by the Engineer of the cleaning results will be based on the results of television inspection. If the results are unsatisfactory, the Contractor shall repeat the cleaning until accepted by the Engineer at no additional cost to the Owner. C. HEAVY CLEANING Heavy Cleaning shall be defined as any cleaning done after an initial three passes with a jet flusher as required by Clean and CCTV. All sewer lines with remaining debris, roots, or other obstructions shall be Heavy Cleaned until the line is completely clear and able to be fully inspected by a CCTV camera. The itemization of Heavy Cleaning is detailed in Items 211. D. TELEVISION INSPECTION The contractor will submit closed circuit television camera inspection (CCTV) digital files and reports to the Department of Public Works and Parks on an external hard drive for review and approval. The external hard drive will become the property of the City of Worcester, Department of Public Works & Parks.
