Specifications include, but are not limited to: The Project includes cleaning and televising of the areas of sanitary sewer pipe. The intent of the Project is to clean, perform root removal, and to televise afterwards to the best extent possible while staying within the allotted budget. The CONTRACTOR will provide all, labor, materials, and equipment to perform the work.; A. Line cleaning and Television Inspection: The CONTRACTOR shall provide all labor, materials and equipment required for sewer line cleaning and television inspection of sanitary sewer by means of closed circuit television, in sanitary sewers to locate constrictions and pipe damage within manhole-to-manhole segments.; The CONTRACTOR will provide hydraulic cleaning of those sewers to be inspected to the extent needed for inspection, which will include performing a minimum of two (2) passes of a high-pressure hydraulic sewer cleaner. Roots shall be removed from any area with substantial intrusion using a root cutting head. Any sand or debris, which is cleaned from the sewer pipe during this operation will be collected in a sand trap and be disposed of by the CONTRACTOR in a proper manner. The CONTRACTOR shall be responsible for transportation and disposal of the debris. No material shall be disposed of in the downstream sewers. Debris shall be disposed at the CITY landfill at no cost to the CONTRACTOR.; The CONTRACTOR shall obtain approval from the CITY prior to opening any fire hydrants.; The CONTRACTOR will regulate existing sewage flow during inspection to a depth that allows all pipe defects and leaks to be observed. When flows in the sewers are too high, in the CITY’s opinion to adequately view the pipe’s internal condition, the CONTRACTOR shall perform the television inspection between the hours of midnight and 6:00 a.m. or other low flow period as determined by the CITY. When upstream sewers are plugged, the CONTRACTOR shall monitor the extent of surcharging and will ensure that the surcharge does not result in overflows from manholes or backups into the basements of buildings. The CONTRACTOR will coordinate the operation of upstream pump stations with the CITY to ensure that overflows do not occur.; The CONTRACTOR will use a pan and tilt closed circuit color television camera to observe and document the internal condition of sewers inspected. The television camera will be moved through the sewer line at a prudent rate so that all pipe leaks and defects are observed and recorded. Each service line will be internally viewed from the mainline utilizing the pan and tilt camera. Closed circuit color television inspection shall be performed after the high-pressure hydraulic sewer cleaner has been removed from the sewer line.; The CONTRACTOR will estimate, by observation, the discharge rate of all continuously running service connections and leakage into the pipe.; Television inspections with the accompanying audio shall be recorded in MPEG-1 format. Inspections shall be conducted one at a time, with each segment recorded as a separate file. Stationing shall be recorded at a minimum of every foot and at all points of interest, to allow instant access to any given footage. Filenames shall contain upstream and downstream subarea and manhole designations as well as camera direction e.g. “BS-1 to BS-2 Downstream”.; The CONTRACTOR will develop a typewritten log of observations for each sewer segment inspected. The logs shall be provided in PDF format (one log per PDF file) and in an Excel spreadsheet or Microsoft Access File provided by the City. The excel spreadsheet or Access file shall be provided to allow for easy upload into the City’s Asset Management Program. General information on each log will include date inspected, weather condition, segment location (including a house number for the upstream manhole of each set-up), segment length, average depth of sewer, ground surface description, pipe size, pipe type, pipe length, and joint material. The inspection log will indicate, by reference points, point of entry of service connections, infiltration sources, continuously running service connections, bad joints, pipe sags, cracks, and other potential problems. The inspection log will utilize a clock system for indicating points of reference. Information identifying the location of each sewer segment, including sub-area and manhole identification numbers and footages, shall be shown on the television screen and recorded during each inspection.
