The Project is a Pipeline Extension within Rancho Water’s service area. The Project will construct a total of 1,050 linear feet of potable water pipeline, consisting of approximately 725 linear feet of 12-inch and 325 linear feet of 24-inch diameter pipe. Additionally, 45 linear feet of 24-inch steel casing will be utilized to install the pipeline under a jurisdictional dry wash. The pipeline will extend from the existing 12-inch potable water pipeline at the easterly terminus of Morgan Hill Drive. The Project continues to the east on unimproved Morgan Hill Drive to the future intersection of Anza Road and Morgan Hill Drive. The Project is centered along the centerline of future Anza Road to a point of connection with the existing 24-inch potable water pipeline located in Rancho’s California Water District’s easement centered along the future centerline of Anza Road.
The Project will be implemented using open trench and jack and bore construction methods. Construction will require excavation of approximately 120 cubic yards for the jack and bore pits; approximately 80 cubic yards for jacking pit, and approximately 40 cubic yards for receiving pit. Excavation requires the preparation of the Project Site, possibly with shoring, amending the soil to fill the bottom of the trench, and then backfilling the trench. Inspection will occur at different stages of excavation of the trench, by measuring the depth of engineering fill. In addition, approximately 560 cubic yards for the entire length of the 12-inch pipeline and 450 cubic yards for the entire length of the 24-inch pipeline will be excavated for open trench construction. Approximately 300 cubic yards of export are anticipated. The entire area that will be disturbed for Project construction, access, and staging is shown on Project plans and is herein referred to as the “Project Site”.
A majority of the pipeline will be buried underground. However, there are two locations along the pipe where two small appurtenances that are above ground, where the air release and vacuum valve are located. Both above-ground valves will be enclosed in cylinders, 18 inches in diameter and about 36 inches tall. The enclosures will be protected by bollards, likely 2 or 4 metal posts surrounding each valve. Each bollard will be approximately 4 inches in diameter and 4 feet tall.
Project construction is anticipated to last for five months, beginning in the third quarter of 2023 and ending in the last quarter of 2023. Construction involves four to six workers, employed, or contracted, that will be on site. Construction will occur between 7:00 a.m. and 5:00 p.m. Monday through Friday, except during District holidays.