The Project would replace aging and deteriorating asbestos cement pipe water mains in the Tri-Palms Estates and County Club housing subdivision. The domestic (drinking) water system was installed 48 years ago and is deteriorating due to age. The community has experienced leaks which result in lack of water service to CVWD customers during repairs, disruption to the community, unexpected expenses and additional staff time to address the impacts resulting from pipe leaks/failures. Additionally, the existing water mains are located in the back of each residential lot, resulting in additional disruption to residents when repairs are made due to the presence of fences, sheds, and other structures located near or over the water main.
The Project would replace and relocate water mains and service connections to the roadway right-of-way. The Project would replace approximately 3,500 linear feet (0.7 mile) of 8-inch asbestos cement pipe with 8-inch zinc-coated ductile iron pipe, install 103 1-inch service connections, and relocate service connections from the back of lots to the front of the properties. Replacement water pipelines, water service laterals, and new water meter boxes would be constructed within the existing Riverside County roadway right-of-way (ROW). Approximately eleven (11) fire hydrants would be installed in the roadway ROW. Staging would also occur in the roadway ROW. The terrain throughout the entire project area has been disturbed extensively by residential development, utility installations, and road maintenance. Pipeline construction would include surface preparation to remove pavement from work areas, trench excavation (with a width of approximately 3 feet and to a maximum depth of 11 feet) and shoring, pipeline installation, and surface restoration, including paving. The existing asbestos cement pipe water main would be abandoned in place and filled with slurry. The 1-inch service laterals would be replaced by open trench construction or a trenchless method, depending on the presence of paved areas and structures on private properties. The Project would be installed in a previously disturbed area within the developed residential community. The duration of construction is estimated at four months.
A cultural resources study was prepared for the project in January 2021. The report concluded that project would not have a significant effect on historical or archaeological resources, and no adverse effect on historic properties under Section 106 of the National Historic Preservation Act.
A biological resources memorandum was prepared for the Project in July 2020. The study found that no state or federally listed threatened or endangered species have the potential to occur in the area of potential effect. No special-status plant or animal species were observed during the pedestrian survey. The Project would have no effect on endangered or threatened botanical and wildlife species or on designated critical habitat.
The project site is not located within or immediately adjacent to a conservation area associated with the Coachella Valley Multiple Species Habitat Conservation Plan (CVMSHCP). The project is not subject to the Coachella Valley Conservation Commission’s Local Development Mitigation Fee because the project location is an existing, disturbed domestic alignment and parcel(s).