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4. The CONTRACTOR shall use a 180-degree rotating head color camera for pipe sizes 6 inch and larger in diameter. The color camera shall be operative under 100 percent humidity conditions in the sewer. The center of the camera lens shall be at or above the springline of the sewer being televised. The camera and ancillary equipment shall not block the sewage flow at any time. In cases where it will not be possible to remove a trapped camera by excavation of a sewer line, a tag line shall be attached to each end of the camera to allow the camera to be pulled out from either end. If the camera gets stuck in the sewer pipeline, the CONTRACTOR shall be responsible for all costs involved in extracting it, and shall extract the equipment in a timely manner in order to avoid interruption to sewer flow. The CONTRACTOR shall call the Engineering and Construction Department at (650) 780-7397 to notify of the situation. 5. Lighting and camera quality shall be suitable to allow a clear in-focus picture for a minimum of six lineal feet of the entire inside periphery of the sewer pipe. The camera shall have a minimum capability of 350 lines of resolution and should be of the "articulating head" type to allow laterals and defects to be viewed directly. To ensure peak picture quality throughout all conditions encountered during the survey, a variable intensity control of the camera lights and remote control adjustments for focus and iris shall be located at the monitoring station. Focal distance shall be adjustable through a range of from six inches to infinity. Continuously displayed on the monitors as part of the video presentation and digital database image capture system shall be the date of the survey, number designation of the upstream and downstream manholes of the section being surveyed, and a continuous forward and reverse read-out of the camera distance from the manhole of reference. 6. At the beginning of each manhole the footage counter shall be set at zero to accurately document the distance within the sewer line. 7. A primary goal of this inspection program is to accurately determine the quantity and location of the building laterals or side sewers and conditions that appear unusual or uncommon to a good sound sewer. The operating technician shall provide a verbal description and have control of the movement of the television camera at all times. This may be accomplished by means of remote control winches or by telephone or other suitable means of communication between the winches at either end of the manhole section being surve}~ed. The travel speed of the camera shall be uniform and shall not exceed 30 feet per minute or as would result in video that could be comfortably viewed. Any means of propelling the camera through the sewer that would exceed this rate of speed or produce non-uniform or jerky movements will not be acceptable. The operating technician shall at all times be able to move the camera through the line in either direction without loss of quality in the video presentation on the monitor. The picture at all times shall be free of electrical interference and provide a clear, stable image of the resolutions specified. 8. If during the inspection operation the television camera cannot pass through the entire sewer section due to an obstruction other than roots or grease, CONTRACTOR shall set up his equipment so that the inspection can be performed from the opposite manhole. If, again, the camera fails PAGE 2 OF 3