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4. Unsatisfactory restoration of the right-of-way, as determined by the Engineer, <br />shall be promptly corrected by the utility. If necessary, unsatisfactory restoration <br />may be corrected by the County and billed to the utility. <br />5. Reinforcement, protection and security of existing utilities and facilities under <br />construction are the responsibility of the permit holder. <br />6. In roadway restoration, the design shall consider the protection of existing <br />utilities without sacrificing the geometrics of roadway design. <br />B. Traffic Control and Public Safety <br />1. Traffic controls, including detours for utility work, shall conform to the most <br />current edition of the MUTCD and any other requirements by the County Traffic <br />Engineer. <br />2. All construction and maintenance operations shall be planned to minimize <br />interference with traffic flow. On heavily traveled roads, no activities interfering <br />with traffic flow will be allowed during peak hours. Work shall be planned so <br />that closure of intersecting streets, road approaches, or other access points is <br />minimized. <br />3. Adequate provisions shall be made to safeguard any open excavation or <br />construction site, including barricades, lights, flaggers, or other protective <br />features in accordance with the requirements of the Washington State <br />Department of Labor and Industries. <br />4. The storage of materials, including spoils, on roadways shall not be allowed <br />unless identified on the traffic control plan with appropriate protective measures. <br />Parking of construction or personal vehicles on roadways shall be kept to a <br />minimum. <br />5. Any signing or mailboxes removed during construction shall be replaced daily. <br />Temporary signing and channelization may be required. <br />C. Emergency Repairs <br />If emergency repairs disturb the right-of-way, the right-of-way shall be restored <br />immediately. Approval of the final restoration of the right-of-way shall be obtained from <br />the County as quickly as possible. <br />D. Striping Replacement <br />All traffic striping and walkway delineation removed during a construction project shall <br />be replaced. Temporary striping shall be used on a limited basis and only as approved <br />by the Traffic Engineer. All permanent striping and channelization shall be installed by <br />County forces at the expense of the utility or permit holder. If County forces are <br />unavailable to perform the striping installation within an appropriate timeframe, the <br />utility or permit holder shall contract for the striping installation. Traffic Operations shall <br />be contacted at least 2 days in advance of installation to verify channelization layout. <br />E. Final Cleanup <br />1. The responsible utility or permit holder shall care for adjacent areas in compliance <br />with Sections 1-04.11 "Final Cleanup" and 8-01 "Erosion Control" of the <br />WSDOT/APWA Specifications. <br />8-17 Engineering Design and Development Standards <br />September 17, 2021 <br />