8514 SHADOW WOOD DR Lot 3 2024-03-29

or reconstructed with permeable pavement within the past three (3) years unless a deviation is approved by the Engineer. This restriction does not apply to roads with a chip -seal surface. Further information is provided in Subsection B. "Installation," below. 3. Prior to construction, the contractor/utility may be required to submit a proposed haul route for review by the Engineer. Based on this review, the Engineer may require that a haul route agreement be administered by Public Works in accordance with SCC Title 13. 4. All utility excavation outside of the improved right-of-way (existing road and fill slope) shall, to the extent required by Title 30 SCC, undergo appropriate environmental review to ensure all impacts to wetlands, streams, fish and wildlife habitat areas and buffers are adequately mitigated. B. Installation 1. Lateral trenching shall not be permitted in roads that have been constructed, reconstructed, or resurfaced with either an asphalt overlay or permeable pavement within the past 3 years, unless it is shown by the utility that alternatives, such as boring or jacking, are not feasible and a deviation is approved by the Engineer. 2. Where boring is the required or approved installation method: i. The length of the bore shall extend a minimum of 4 feet from edge of pavement, if sufficient right-of-way exists. ii. Unused holes or abandoned casings shall be backfilled. iii. Water boring under roadways shall not be permitted. iv. Existing carriers and conduit installed under a roadway shall be physically located prior to boring. 3. When trenching through existing pavement, the open cut shall be a neat -line cut made by either saw -cutting or jackhammering a continuous line. Trench sides shall be kept as nearly vertical as possible. i. Trench width shall equal the diameter of the pipe plus a minimum of 12 inches on each side to ensure adequate compaction by mechanical means. See Standard Drawing 8-030. ii. Where a trench crosses pavement, the pavement cut shall be at least 12 inches wider on each side than the width of the trench to ensure adequate compaction. 4. The pipe or carrier, including backfill, shall be installed in a manner that ensures no deformation of the pipe likely to cause leakage or degradation to the structural integrity of the roadway. Compaction and restoration shall be accomplished as detailed below immediately after the trench is backfilled. 5. Plowing of communication and electrical lines on or adjacent to existing roads by means of a vibratory plow may be allowed by the Engineer provided the structural integrity of the roadway will not be impaired. Plowing may be no closer than 4 feet from the pavement. Use of a "static" type plow is not allowed. 8-5 Engineering Design and Development Standards September 17, 2021