Week of Nov. 18, 2019:
Work is nearly completed and the project is expected to be wrapped up in December.
Week of Oct. 21, 2019:
A critical pipeline connection has been completed, effectively converting most of the Irvine Lake Pipeline from untreated water to recycled water. With this connection, most customers who historically received untreated water from Irvine Lake for irrigation are now receiving recycled water. All other construction activities are nearing completion soon.
Week of Oct. 14, 2019:
A temporary shutoff of irrigation water earlier this month has been completed as crews secured new pipeline connections associated with the project. In the coming weeks, work will focus on paving reservoir sites, testing the new pipelines and starting work at the strainer facility.
Week of April 22, 2019:
All roadwork associated with this project has been completed. Any other construction work is being conducted on-site and is not anticipated to impact surrounding neighborhoods.
Week of Jan. 14, 2019:
Construction has begun on the retaining wall, which will result in the temporary removal of a portion of the existing access road to the Zone 5 tank. Final pipeline connections are expected to be completed in March.
Week of Dec. 18, 2018:
Backfilling around the reservoir is nearly complete. Once done, crews will begin to construct the form work for the concrete structure and to cut the slope for the installation of a retaining wall.
Week of Nov. 12, 2018:
Backfilling has begun around the reservoir and preparation has begun for the relocation of the 4-inch highline. The pipelines portion of the project is done, with a notice of completion submitted and approved by the Board of Directors this week.
Week of Oct. 29, 2018:
Final punchlist of items related to the pipeline project and roadwork to be completed this week. For the reservoir project, trucks will soon begin hauling dirt to the site to backfill around the tank.
Week of Sept. 17, 2018:
Final paving was completed last week. Final road-striping, raising valves and manholes to grade, and completion of punch-list items will be completed next week. Final conversion of the the pipelines will occur when the reservoir tank is completed in early 2019.
Week of Sept. 10, 2018:
All roadway pipeline work is complete. Final paving began last week and is scheduled to be completed this week along with the associated raising valves and manholes to grade. Striping, turnover of the intersection video detection systems to the City of Orange, vacating and cleaning up the storage and laydown yard, and the final punch list are anticipated to be completed next week. Reservoir work connecting pipeline is ongoing, and a redesign of the reservoir retaining wall system is under review.
Week of Aug. 27, 2018:
Construction at the intersection of Jamboree Road and Chapman Avenue/Santiago Canyon Road is mostly completed, with final cleanup and testing occurring into early September and final street paving and restoration along Jamboree and in the intersection to follow.
Week of Aug. 12, 2018:
Complications in pipeline construction delayed work at the intersection of Chapman Avenue and Jamboree Road. With 80 feet of pipe remaining, construction will continue through next week. Work hours will be from 9 a.m. to 3 p.m.
Week of Aug. 6, 2018:
Installation of the 42-inch line was delayed by the discovery of underground pipeline that did not conform to as-built drawings. This prompted an earlier 5 a.m. start time for construction this week to complete the pipeline installation. Construction hours will revert back to 9 a.m. to 3 p.m. next week, with traffic reduced to one lane in each direction during construction hours. Most roadwork expected to be completed by Aug. 17.
Week of July 30, 2018:
Leak-testing of the reservoir is taking place this week. A 42-inch backfill was installed and concrete is being poured for a pipe barrel. Installation of a 42-inch storm drain line is ongoing.
Week of July 2, 2018:
East Santiago Canyon Road will be repaved during nighttime hours this week, from Jamboree Road east to just beyond the reservoir site. Construction hours will be from 7 p.m. to 5 a.m. Friday, July 6 and Saturday, July 7.
Week of June 25, 2018:
Excavation work and back-filling has begun at the intersection of Jamboree Road and Chapman Avenue/Santiago Canyon Road. Construction hours for this portion of the project will be from 9 a.m. to 3 p.m. Monday through Friday. Construction hours for the final portion of the project in the westbound lanes of Santiago Canyon Road will take place from 5 a.m. to 3 p.m. Monday through Friday, through July.
Week of May 21, 2018:
All major night work on Santiago Canyon Road and day work along Jamboree Road has been completed. Nighttime construction at the intersection of Jamboree Road and Chapman Avenue began this week and is anticipated to be completed in August. All work will occur at night, Sundays through Thursdays, to minimize traffic impacts. Remaining day work includes removal of K-rail and temporary re-striping, replacement of curb and gutter, testing of cathodic protection test stations and pipeline pressure testing. Final street paving and re-striping is anticipated to occur in July.
Week of May 14, 2018:
Santiago Canyon Road roadwork associated with pipeline construction has been completed. Pipeline construction will begin at the intersection of Chapman Avenue and Santiago Canyon Road the week of May 21, and will continue through early June.
Week of April 30, 2018:
Installation of the lower 20 feet of the drain pump station has been completed, and the roof hatches, reservoir ladder, and overflow spools inside the reservoir have been installed. Excavation for the inlet/outlet vault has been started.
Week of April 23, 2018:
Road work along northbound Jamboree has been completed; the permanent K-rail will be removed and temporary striping retouched. Cathodic protection tests and other checks must be completed before traffic lanes returned to pre-project conditions.
Week of April 9, 2018:
The shotcrete application has been completed, and Zone C pipeline at Rattlesnake has been installed up to the connection points at both ends. Staff is now planning for Zone C pipeline connection to the 54-inch pipeline. Work on installing vaults and yard piping is progressing.
Week of April 2, 2018:
Crews this week will be applying a protective layer of Shotcrete on the pre-stressed cables wrapped around the reservoir tank. Coordination of the upcoming pipeline connections at the reservoir site continues to move forward.
Week of March 26, 2018:
Construction of all PVC pipeline along Jamboree, and nearly 4,000 of 10,000 feet of 42-inch welded steel pipeline along Jamboree and Santiago Canyon Road has been completed. ILP shutdown and cut-in work has also been completed.
Week of March 12, 2018:
The recycled water reservoir is scheduled to be wrapped next week. Pipeline continues to be installed.
Week of Feb. 19, 2018:
Crews are now working to lay pipeline on Jamboree south of Santiago Canyon Road, and trenching along Santiago Canyon Road is being done during nighttime hours.
Concrete work for the underground reservoir is completed, and false work used during the curing process is being removed.
Week of Jan. 22, 2018:
Construction on Jamboree Road north of Santiago Canyon Road continues and is nearly complete. PVC pipeline is being installed.
Construction of the buried concrete reservoir continues. The reservoir is expected to be completed in September 2018 and operational in early 2019.
