Laserfiche WebLink
(� 'S <br />Required Easements and ROW <br />Typical easements for the project include a 60-foot-wide permanent easement and 20-foot- <br />wide temporary construction easement through private, agricultural properties for the 60- <br />inch pipeline; a 75-foot minimum working area within the existing E-470 MUE; and an 80- <br />foot permanent easement for trenchless pipeline crossings as required by launching and <br />receiving pit excavation. The minimum construction width will be 20 feet to allow <br />construction access or material stockpile. Temporary easements are planned to supplement <br />existing ROW and/or permanent easements to provide room to maneuver equipment or <br />materials. Temporary easements will be used for materials storage or equipment at <br />launching and receiving pits for microtunneling and pipe jacking operations. <br />Construction Considerations <br />The following basic sequence will be used to construct each pipeline: <br />1. Perform final pre-construction environmental surveys and perform any required <br />mitigation prior to starting construction, <br />2. Clear and grade pipeline alignments, <br />3. Excavate trench for pipe installation, <br />4. Haul pipe to construction sites, <br />5. Place pipe along trenches, <br />6. Place pipe in trenches and connect pipe, <br />7. Backfill trenches and grade surface, and <br />8. Clean up and restore areas disturbed by construction. _ <br />Aurora Water and its team ofprofessionals have completed thorough environmental <br />assessments for the segment. In addition, immediately prior to starting construction, a final <br />pre-construction environmental survey will be performed by the City's environmental <br />consultant, to re-confirm any sensitive areas and identify appropriate protection or <br />preservation measures to be implemented prior to or at the start of construction, possibly <br />including revisions to the construction sequence or schedule, addition of fencing, or where <br />permitted, relocation of species. Clearing will be performed in accordance with the permits <br />and conditions in easement agreements with public and private landowners. This will <br />include proper disposal of debris, stockpiling topsoil for use in site re-vegetation, and <br />appropriate environmental and drainage controls. Open-trench construction will comply <br />with OSHA safety standards and will include minimum cover of 5 to 8 feet (S feet where <br />necessary to prevent service disruptions to existing utilities). Groundwater encountered in <br />trenches will be pumped into temporary land application systems or routed to portable <br />treatment facilities. Turbid water will be treated before discharge into streams or storm <br />drains with settling facilities. Pipe will be installed in lengths 40 to 48 feet (20 to 25 feet at <br />pipe-jacking locations). Permits will be obtained prior to any discharges, to comply with all <br />local, state, and federal regulations. Topsoil and native earth stockpiled from the trench <br />excavation will be retained on-site for surface restoration. <br />Utility conflicts are not expected because the Segment 1 route avoids residential and <br />commercial areas; through the selection of the alignment within the E-470 MUE. This <br />alignment will avoid service laterals such as gas, electrical, telephone, water and sewer <br />through the City of Brighton and other rural residential areas. Prior to final design, <br />16 <br />