Item 13 - SR-55/Ritchey Street Water Improvements

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existing water system on the west side and at Newport Circle, and about 1,444 feet will be new 16-inch DR18 C905 PVC pipe, and about 120 feet of new 16-inch Class 250 DIP to replace the existing piping within Ritchey Street within the limits noted on the Plans. The proposed water main will reconnect existing commercial services, construct new fire hydrants, and reconnect existing fire department connections as well as all connections to the existing water system. This work will also include construction of concrete encasement for thrust restraint, installation of a 16-inch line stop, abandoning the existing 16-inch water main, potholing of crossing utilities and points of connection, establishing traffic control during construction, repaving the roadway and restriping new pavement. SA-7 Pressure Reducing Station Relocation, Project No. 19-6439: This work is for the relocation of the existing SA-7 Pressure Reducing Station. The proposed station will be an above ground station located upon a concrete slab surrounded by an 8-foot high block wall with a rolling gate entrance to the site. Portions of the main line header and discharge piping will be buried and encased in concrete for thrust restraint. The piping and valves for the pressure reducing component of the station will be above ground. The pipe and valves have varying diameter sizes, including 8-inch, 10-inch, 14- inch, 16-inch and 24-inch. The new work includes installing an energy dissipater for discharging waters from the station. This discharge line will be temporarily connected to the existing 21-inch storm drain at the existing SA-7 site until the final work is completed by Caltrans for the new storm drain within the Freeway widening project. The work also includes a new antenna pole, electrical equipment, lighting, instrumentation and controls. There will be a portion of this work that will be phased since the block wall on the side of the freeway cannot be installed until the storm drain culvert for State Route 55 Widening Project is installed. In the interim a chain link fence will be installed. Once the installation ofthe storm drain culvert is completed, the chain link fence will be removed, and the Phase 2 site construction, including the 8-foot high block wall, will be constructed to complete the site work. Demolition and removal of the above ground existing station components is included in this work. SR-55 Water Crossing Relocation, Project No. 19-6440: This work is for the bore and jack installation of two new transmission mains across the Costa Mesa Freeway (State Route 55) and the partial removal and abandonment of the existing transmission mains. The new mains include 249 LF of 12-inch Class 350 DI carrier pipe within a 30-inch steel casing and 249 LF of 24-inch steel carrier pipe within a 42-inch steel casing. The crossing will also include fiber optic conduits within the casing for future use. The existing carrier pipes and casing crossing the freeway will be slurry filled and abandoned in place. This work also includes: the construction of new 12-inch piping on both sides of City of Santa Ana RFP 21-066 Page Al-2