Zone 1 Reservoir Project

Zone 1 Reservoir Project

Final Project Map

Irvine Ranch Water District will be installing a second, smaller reservoir at Sand Canyon Avenue and Elysian to increase water storage capacity and create a necessary backup supply of drinking water that will ensure uninterrupted service to Irvine residents. The site is owned and operated by IRWD and contains several drinking-water-related facilities, including a large reservoir.

The project has been designed to maintain the visual character of the neighborhood and to minimize the visual impact of the new reservoir. A graded slope, extensive landscaping and other features have been incorporated into the design to help screen the new reservoir from view. Construction is scheduled to begin in late September, and will take approximately 18 months to complete.

Work hours: 8:30 a.m. to 5 p.m. Monday through Friday.

Contact information: For questions or comments, please email info@irwd.com or call 949-453-5500. During non-business hours, please call 949-453-5300 (24 hours).

Project Updates+

Week of Jan. 14, 2019:

Work continues on the inlet and outlet pipeline installation located underneath the tank.

Week of Jan. 7, 2019:

Inlet and outlet pipeline will be installed this week.

Week of Dec. 31, 2018:

Soils compaction of the reservoir footprint has been completed, and all associated structural fill material is scheduled to be in place by the end of this week.

Week of Dec. 17, 2018:

Trucks will be hauling dirt off the site this week. The shoring system has been installed, and excavation for the tank foundation was completed.

Week of Dec. 3, 2018:

Grading activities, over-excavation and backfill will require a lot of truck activity at the site into January. Pipeline installation will begin toward the end of December or early January.

Week of Nov. 19, 2018:

Grading is continuing on site and work will begin soon on over-excavation and compaction of the tank subgrade. A permanent construction fence will be installed along Sand Canyon Avenue by the end of next week.

Week of Nov. 12, 2018:

Shoring has been installed and over-excavation of the tank footprint is underway.

Week of Nov. 5, 2018:

Grading will begin this week, with trucks hauling dirt from the site over the next couple of weeks.

Week of Oct. 29, 2018:

Clearing and grubbing has been completed and the owner of an onsite cellular facility is installing new conduit to power its operations during construction.

Week of Oct. 8, 2018

All necessary landsaping has been cleared for construction, and several trees were boxed up for use at other locations. Replacement trees have been identified that are taller and denser than those that were originally on site. They will be planted once the project is completed. Construction fencing was installed this week.

Week of Sept. 10, 2018

Crews began setup on site this week. Clearing work will follow, with healthy, mature trees being boxed up for storage or replanting.

Week of Aug. 12, 2018:

Some tree removal is expected to begin in September, with construction mobilization to follow.

Click on the video above for a computer-generated illustration of the project as viewed from adjacent streets.

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