2018-125-E Planning - Transstate LLC Phase 3+5 Sewer Cleaning

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DocuSign Envelope ID: 6E30952E- 74C9- 4C59- B050- B1AE415FDFED Exhibit A: Proje�t Specifications for Sewer Line Cleaning and Video Recording this contract. Conditions such as broken pipe and major blockages that prevent cleaning from being accomplished without further damage to the sewer lines should be reported to Orange County's Staff Engineer. The Contractor will not be responsible for cleaning the specific pipe portions if a situation like this is determined by the Staff Engineer to exist, unless Orange County has the obstruction removed. Cleaning equipment should be capable of removing dirk, sand, grease, roots, rocks, and other obstructions or materials as necessary to clean the sewer lines. Due diligence and precaution shall be taken while using this cleaning equipment in order to prevent the flooding of public or private property during the course of the cleaning procedure and in order to prevent any damage to the sewer lines themselves. All material cleaned from the lines, e.g. sludge, dirt, sand, rocks, grease, etc., shall be removed from the sewer lines at the downstream manhole of the section of the line being cleaned. Allowing material cleaned from the lines to pass from pipe segment to pipe segment will not be allowed. The material, once removed from the lines, must be removed from the work site and disposed of properly at the end of every day. Material shall not be allowed to be stored in direct contact with the ground during the workday. Foreign material from the cleaning process may be disposed of at no cost at the City of Mebane Wastewater Treatment Plant at 636 Corrigidor Street, Mebane, NC 27302. All foreign material must be free of chemicals to be disposed of at the City of Mebane Wastewater Treatment Plant. Additionally, disposal must be coordinated with Greg Barts at the City of Mebane. After sewer pipe segments have been cleaned, the Contractor will perform a video inspection of the lines. If the inspection shows that the cleaning previously done is unsatisfactory, the Contractor will need to re- clean and re- inspect the lines at his expense. The determination of satisfaction shall be up to the County Engineer. Video Inspection When performing the video inspection, the flow must be below 20% of the pipe diameter, as determined by inspecting the flow in the upstream manhole of the section to be videoed. If the flow is higher than this, the Contractor will need to either plug the flow during the inspection, or reschedule the inspection to a low -flow time, which could entail working after dark. At no time will it be acceptable to cause an overflow due to any Contractor action. Bypass pumping will not be allowed, and should not be necessary, on this project. The Contractor shall perform CCTV inspections of all sewer components that were cleaned within the scope of this project. All video recordings shall be submitted in a digital format approved by the County Engineer and stored on a DVD. The data on the DVD's shall be labeled and indexed in an orderly manner such that a selected pipe segment can be queried without viewing the entire contents of the DUD. VHS video tape recordings will not be accepted. All video recordings shall be presented to the County at the completion of the project. The camera equipment shall produce a clear, crisp color image. Lighting shall be adequate to display a panoramic view of the pipe including all visible defects within the pipe segment regardless of pipe diameter. All sewer connections shall be displayed with adequate lighting to determine if pipe fittings and connections are leaking or otherwise defective. The camera shall be able to change the direction of view by at least 90 degrees from the axis of the camera and shall be able to rotate 360 degrees. The length from beginning point of each segment shall be displayed by numbers within the video display. Measurement units shall be recorded in standard units and the video display readout shall read in units of one tenth of a foot.