The work in this contract is for the Oakbrook Sanitary Sewer Improvements for Clear Lake City Water Authority located in Oakbrook Section 1, along Buccaneer Lane. The purpose of this project is to provide sanitary sewer relief for the residents within this service area, specifically the residents along Diana Lane, near Reseda Drive. While the goal of this project is aimed specifically at residents in the upstream portion of this service area, the work proposed is downstream, along Buccaneer Lane, between Seafoam Road and Bay Area Boulevard. This project generally consists of two parts. The first part includes the removal of an existing sanitary sewer manhole, installation of a new concrete sanitary sewer manhole at a new location, and corresponding sanitary sewer replacement and realignment in order to reduce storm water inflow and correct the sanitary sewer alignment. The second part includes upsizing two line segments by pipe bursting method in order to provide additional capacity and lower the hydraulic grade line for this service area. In general, this work consists of: Removal of existing sanitary sewer manhole within existing driveway, and installation of new sanitary sewer manhole outside of existing driveway. Sanitary sewer within the excavation limits shall be removed and replaced. Proposed slopes and flow lines depend on existing conditions. Contractor shall field verify location and flow line of existing sanitary sewers at proposed points of connection prior to installation. The existing locations and flow lines shall be communicated to the Engineer for the determination of the final proposed elevations and slopes. Installation of new concrete sanitary sewer manholes on existing sanitary sewer and sanitary sewer by trenchless construction, connecting to both new manholes. Contractor shall uncover location of water line prior to installation. Abandonment and grouting of existing sanitary sewer. Removal and replacement of existing concrete including curb, gutter, sidewalk, driveways, and other pavement in areas specified in the plans. Contractor shall coordinate construction, including timing and duration of driveway and/or parking lot restrictions, with the Riviera at the Clear Lake Apartment Homes. Control of ground water, as necessary and as directed by Engineer. Control of surface water shall be incidental to the project. Pipe bursting of sanitary sewer lines including service reconnections. The nominal diameter of the existing sanitary sewer is 12-inch and shall be upsized by pipe burst method. The new sanitary sewer shall be high-density polyethylene pipe with a minimum inside diameter of 15-inches and outside diameter of 16-inches. Site restoration including removal and replacement of necessary and/or damaged irrigation lines, turf, plants, shrubs, fences, trees, pavement and other miscellaneous items. Pavement, sidewalks, and driveways damaged outside of the area, purposefully removed, as specified on the plans shall be included within site restoration. Implementation, maintenance, and removal of the traffic control plan and of bypass pumping, as necessary; storm water pollution protection best practices; and trench safety as required per Section 01561. Post-installation television inspection, from manhole to manhole, is required for all new and rehabilitated sanitary sewers.
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