RECOVERY - XUMU061023B - Repair California Blvd, Hwy 1 to Utah Ave

Repair California Boulevard from Highway 1 to Utah Avenue / Modification 03 General: Restore Three Storm Drain Culverts / Re-line Three Culverts Corrosion of the existing corrugated steel culvert pipes will lead to underground piping of the subgrade soils leading to erosion of the subgrade soils creating sinkholes or settling the new pavement. This project is based on relining 3 culverts with HDPE Snap Tite Pipe. Once the liner has been installed and placed in a comfortable position to allow a good section for the slurry, then pressurized grout (slurry) will be applied in the void between the existing pipe and the liner to fill the void. With the installation of the liner it will require labors and masons working in the confined area of the drain inlet basin for the grout tie in, this will require safety measures for confined spaces and will consist of a certified safety monitor with proper PPE supplied for the confined space entry, ventilation fan, harness, safety man lift winch. Restore discharge opening areas by installing an energy dissipater at the discharge end of the culvert on the down stream side. Traffic control will be used during the concrete installation for the mixers and pump to stage. Coordination with service contracts for irrigation run off water will need scheduling.