SCH Number 2023020255

Project Info

Title

Draft Initial Study/Mitigated Negative Declaration for the Anza Road 1550 Pressure Zone Pipeline Extension [Project No. D1988]

Description

Rancho California Water District proposes to extend a potable water pipeline within the 1550 pressure zone from Morgan Hill Drive to Anza Road. The proposed Project will improve reliability of the water system. The pipeline extension is a total of 1,050 linear feet of potable water pipeline beginning at the end of the existing easterly terminus of Morgan Hill Drive within an existing residential development. The project is located easterly and 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. The Project will be implemented with open trench and bore and jack construction. The Project consists of approximately 725 linear feet of 12-inch and 325 linear feet of 24-inch diameter potable water pipeline. The Project will extend from the existing 12-inch potable water pipeline at the terminus of Morgan Hill Drive in an easterly direction and connect to the existing 24-inch potable water pipeline located in the Rancho California Water District easement. In addition, approximately 45 linear feet of 24- inch casing will be utilized to install the pipeline where it passes under an unnamed jurisdictional wash. The casing construction will require the removal of approximately 120 cubic yards (CY) of excavated material (80 CY for jacking pit and 40 CY for receiving pit). Excavation of the trench will involve preparation of the trench (shoring, etc.), amending soil to fill the bottom of the trench, and backfilling the trench. Inspections will occur throughout the excavation of the trench to ensure depths are consistent with engineering fill. Additional removal of approximately 560 CY of excavated material for the entire length of the 12-inch pipeline and 450 CY of excavated material for the entire length of the 24-inch pipeline is required. While most of the Project is underground, two locations along the pipeline will be above ground where the two-air release and vacuum valves are located. The above ground features will be protected by bollards likely 2 or 4 metal posts, each one being approximately inches in diameter and 4 feet tall. Project construction is anticipated to last for five months, beginning in the second 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 7AM and 5PM Monday through Friday, except during weekends and district holidays. Construction within 600 feet of the closest residences shall not occur before 8AM.

2 documents in project