support columns which showed cracks, but did not yet demonstrate any structural weakness. Palos Verdes (Crenshaw Ridge Supply & D-500 Project): The Palos Verdes water system is comprised of 100 percent purchased water which is distributed via two major pipelines. 90 percent of the supply is pumped to tanks located at the top of the mountain via a single transmission system (Ridge) then distributed to customers downgradient. The lower elevation areas (D-500) are served from a single pipeline and pump stations. The pipe in both transmission pipeline systems is over 60 years old, and located in cross-country alignments that have become inaccessible due to development that has occurred since the system was installed. In the event either of these pipelines were to leak or fail due to age or other emergency, residents of the peninsula could face lengthy water outages. Cal Water will install a redundant system parallel to the Ridge System, and replace portions of the D-500 pipeline. These projects will provide redundancy to the Ridge system and provide additional reliability to Palos Verdes customers. Salinas (155 Hydraulic Zone and Station 47): This zone has experienced several wells failing because of contamination. Cal Water initially proposed drilling a new well to increase supply reliability in the zone. After negotiation the parties propose lower cost options of taking higher nitrate water from well 21-01 and blending it to safe levels using water from well 47-01, along with additional capacity improvements to Station 47. Westlake (Thousand Oaks Zone III Emergency Interconnect): Cal Water proposes an emergency interconnection with the City of Thousand Oaks because all 3 purchased water connections serving Zone III are supplied from the Calleguas Municipal Water District’s
support columns which showed cracks, but did not yet demonstrate any structural weakness. Palos Verdes (Crenshaw Ridge Supply & D-500 Project): The Palos Verdes water system is comprised of 100 percent purchased water which is distributed via two major pipelines. 90 percent of the supply is pumped to tanks located at the top of the mountain via a single transmission system (Ridge) then distributed to customers downgradient. The lower elevation areas (D-500) are served from a single pipeline and pump stations. The pipe in both transmission pipeline systems is over 60 years old, and located in cross-country alignments that have become inaccessible due to development that has occurred since the system was installed. In the event either of these pipelines were to leak or fail due to age or other emergency, residents of the peninsula could face lengthy water outages. Cal Water will install a redundant system parallel to the Ridge System, and replace portions of the D-500 pipeline. These projects will provide redundancy to the Ridge system and provide additional reliability to Palos Verdes customers. Salinas (155 Hydraulic Zone and Station 47): This zone has experienced several wells failing because of contamination. Cal Water initially proposed drilling a new well to increase supply reliability in the zone. After negotiation the parties propose lower cost options of taking higher nitrate water from well 21-01 and blending it to safe levels using water from well 47-01, along with additional capacity improvements to Station 47. Westlake (Thousand Oaks Zone III Emergency Interconnect): Cal Water proposes an emergency interconnection with the City of Thousand Oaks because all 3 purchased water connections serving Zone III are supplied from the Calleguas Municipal Water District’s