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When obstructions are encountered, an attempt will be made to clean the sewer from both <br />upstream and downstream manholes. <br />The sanitary sewer main cleaning shall be conducted in accordance with the standard NASSCO <br />specifications for sewer main cleaning. <br />Assumptions: A maximum of 5% of the total footage (total footage estimated at 141,963 linear <br />feet based upon available information) shall be cleaned without request for additional <br />compensation. A listing of the sanitary sewer main cleaning candidates shall be provided to the <br />City project manager for approval before the cleaning operation begins. If cleaning of the pipe <br />segment cannot be satisfactorily accomplished within three passes of the sewer main, the <br />segment shall be turned over to City for heavy duty cleaning, removal of roots /heavy debris, <br />and /or removal of other obstructions as required or the City will allow a reasonable and customary <br />charge to be added to the contract cost to accommodate this type of sewer main cleaning. Any <br />debris /sediment removed from the collection system during this operation shall be disposed of at <br />a location designated by City and in accordance with all state and local regulations. <br />Required from Others: The City shall provide water for cleaning operations and an approved <br />disposal site for debris /sediment removed from the system. The City shall provide review, input, <br />and approval of line segments recommended for cleaning. <br />Deliverables: Electronic and hard copy deliverables provided in Task 13 — Draft Report. The <br />report will provide tabular listings of the pipe segments cleaned during this operation, as well as <br />any defects noted during this operation. <br />Task 8 — Sanitary Sewer Main Internal Television Inspection <br />This task consists of the internal TV inspection, using closed circuit color television equipment, of <br />the recommended sewer lines for leak evaluation and location of buried manholes. ENGINEER <br />will perform an analysis of the collected field data to prepare a listing of recommended sewer lines <br />for approval by the City. The TV inspection will be recorded on videotapes and DVD. Concurrent <br />dyed water flooding will be performed with television inspection to verify locations of mainline <br />defects. Field inspection log sheets will be used to document problems and defects discovered <br />during inspection. <br />When obstructions are encountered, an attempt will be made to televise the sewer line from both <br />upstream and downstream manholes. <br />The sanitary sewer main cleaning shall be conducted in accordance with the standard NASSCO <br />specifications for sewer main inspection. <br />Assumptions: A maximum of 5% of the total footage (total footage estimated at 141,963 linear <br />feet based upon available information) shall be televised without request for additional <br />compensation. A listing of the sanitary sewer main internal inspection candidates shall be <br />provided to the City's project manager for approval before the operation begins. The locations of <br />noted defects shall be within the specified accuracy of the footage counter as published by the <br />manufacturer of the counter. <br />Required from Others: The City shall provide the personnel and equipment necessary to remove <br />the television camera should it become lodged in the sewer main during operations. The City, <br />however, assumes no liability for damage to the television camera and /or other equipment. <br />ENGINEER shall exercise every reasonable caution to avoid lodging the camera equipment in the <br />pipeline. The City shall provide review, input, and approval of line segments recommended for <br />inspection. <br />City of San Marcos, Texas Portions of <br />Basins 10 Assessment Page 5 <br />Project Work Plan <br />11/8/2011 <br />