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Utility Construction and Use of the Right-of-Way Policies and Procedures Manual Page 12 <br /> The permittee shall be responsible for maintaining trench cuts and/or panel replacements until such <br />time as the road is resurfaced or fully reconstructed by City project and will be required to repair <br />settlement or damage from trench cuts and/or panel replacement settlement indefinitely. <br /> <br />3.03.2 Street Cuts and Restoration - Portland Cement Concrete (“PCC”) Pavements <br /> Unless an exception is approved by the Public Works Maintenance Surface Technical Supervisor, <br />trench cuts will not be allowed on PCC streets constructed in the year 2000 or later, identified as <br />historical, or having excessively large panels as determined by the Surface Technical Supervisor <br />or designee. Cuts in these streets will require full panel replacement. Requests for a utility trench <br />street cut exception must be made in writing to the Public Works Maintenance Surface Technical <br />Supervisor and shall include a description of the work proposed to be performed and the details of <br />why a full panel replacement cannot be performed. If the request is approved, the requirements <br />below apply and additional conditions for the permanent restoration of the street may be imposed <br />at the sole discretion of the Public Works Maintenance Surface Technical Supervisor and will be <br />included in the approved permit. An application to request a utility trench street cut exception can <br />be obtained from the Public Works Maintenance Surface Technical staff or found on the City of <br />Eugene website under Permits and Right-of-Way Use . <br /> Trench/street cuts shall be completed per DET 1601& 1601A Current DET Specs and can be found <br />via the following link under Standard Drawings and Cataloged within DET Series Drawings. <br />https://www.eugene-or.gov/444/Standard-Specifications-for-Construction <br /> PCC in a utility trench restoration shall be placed to a depth matching the existing pavement or 7 <br />inches, whichever is greater. Where the existing pavement is PCC over Cement Treated Base <br />(CTB) or Asphalt Treated Base (ATB), The CTB and ATB shall be replaced to their original depth <br />prior to repaving the trench cut. <br /> Trench compaction shall meet current City Standard Specifications 00405.46(c)(2). Class A, B, <br />C, or D Backfill - Backfill the trench above the pipe zone in successive lifts not exceeding 24 <br />inches in trench backfill area when more than 4 feet from final surface grade; do not exceed 12- <br />inch lifts in the trench backfill area when less than 4 feet below final surface grade. Do not allow <br />the backfill to free-fall into the trench until at least 3 feet of cover is provided over the top of the <br />pipe. Modify the method of compaction as necessary to protect the pipe. The Utility Inspector will <br />direct field testing of compaction at various lifts during the backfilling of the trench when deemed <br />necessary. In all instances, the compaction of the trench backfill shall be such that the arithmetic <br />average of all tests taken in one day shall not be less than 95 percent of maximum density, and no <br />individual test result shall be less than 93 percent within the rights-of-way. The cost of testing shall <br />be borne by the permittee.