Reach V Rehabilitation and Improvement Project

If you have any questions regarding this project, please contact SAWPA at or at (951) 354-4223.

The work includes lining of approximately five miles of the Inland Empire Brine Line in the Temescal Valley, Riverside County and the City of Corona. The project begins at Temescal Canyon Road at Tom Barnes Road and continues southbound on Temescal Canyon Road to Glen Ivy Road.

Funding for this project has been provided in full or in part through an agreement with the State Water Resources Control Board. The contents of this document do not necessarily reflect the views and policies of the State Water Resources Control Board, nor does mention of trade names or commercial products constitute endorsement or recommendation for use. (Gov. Code § 7550, 40 CFR §31.20)


Project: SAWPA Inland Empire Brine Line Reach V Rehabilitation Project – Task 4

Contractor: Weka, Inc.

Construction Manager: Vali Cooper & Associates, Inc.

SAWPA’s Phone No.: (951) 354-4220

As part of the Santa Ana Watershed Project Authority’s (SAWPA’s) Inland Empire Brine Line Reach V Rehabilitation and Improvement project, Construction crews will be completing a variety of work activities along Temescal Canyon Rd., between Stellar Ct. and Trilogy Rd. Work activities will include the installation of a temporary bypass brine line and the rehabilitation of approximately 14,000 linear feet of pipe using a trenchless repair technique termed “cured-in-place pipe”.

The following work activities are anticipated to take place during the week of September 11th, 2017:

Construction Activities for Cured-in-Place lining will be completed continuously for a 36-hour duration. Traffic control will be set up through the entirety of these activities with crews working in the streets through the night.

  1. Cured-in-place lining activities will take place between Dawson Canyon Rd and the I-15 Freeway. The North bound Right lane and South bound left lane will be closed, reducing traffic to a single lane in either direction. Traffic control will be set-up the morning of 9/11/17 and removed from lanes on the evening of 9/15/17. (9/11 – 9/15)
  2. Liner pit excavation and pipeline appurtenance installation will take place North of Dawson Canyon. Traffic will be reduced to a single lane, with flagmen directing the flow of traffic. (9/11 – 9/15)
  3. Roadway maintenance will be performed on the excavated pipeline installation trench line from Stellar Ct. to Trilogy Rd. This work activity is completed on an as needed basis with traffic control set up at various locations for various durations for the entire length of the project.  (9/11-9/15)

NOTE: Construction activities are subject to change due to field conditions, weather, or other operational issues. Updates will be provided when significant changes to planned activities occur

Location Date and Time  Detour/Closure
Temescal Canyon: Dawson Canyon to I-15

9/11/17 – 9/15/17
24 hours

Single lane in both directions.
Temescal Canyon: North of Dawson Canyon

9/11/17 – 9/15/17
8 am – 5 pm

Single lane with flagmen directing traffic.
Temescal Canyon: Stellar Ct to Trilogy

9/11/17 – 9/15/17
8 am – 5 pm

Various closures for various duration.

Progress Report:  Inland Empire Brine Line Improvement Project

We are pleased to report two significant steps toward completing the Brine Line Improvement Project along Temescal Canyon Road in Corona and unincorporated Riverside County.

On August 2, the Commission of the Santa Ana Watershed Project Authority terminated, for cause, the Contractor for the Project.  This step was taken because the contractor failed to meet contractual terms and quality standards while causing extensive delays in the work.

The SAWPA Commission also voted to move quickly in hiring a new contractor – a partner who can finish the project in a timely manner for a reasonable cost.  A traditional re-bidding process would have taken four months, on a project already behind schedule.  To streamline this step is to finish the work faster, reducing public and customer disruption while decreasing risk to the environment.

Once a new contractor is hired, SAWPA can share a feasible timeline.  The priority will be completing the work on the first phase of the project, near The Shops at Dos Lagos in Corona, and removing the bypass pipe visible along Temescal Canyon Road.  Work will then proceed on the two additional project phases to the south.

Project Overview:  SAWPA is working to test, fortify and/or replace 5 miles of the Brine Line, an underground pipeline that conveys salty water from the Inland Empire to the Pacific Ocean.  The brackish water comes from key sectors of the Inland economy, including power plants, manufacturers, and groundwater desalters that produce large volumes of drinking water.

The project calls for placing new pipes within older pipes which have lost their shape over time.  With loss of shape comes increased risk of spills, and the upgrades follow a 2011 Brine Line leak that was remediated.  Water from the Brine Line poses no health risk but, if left untreated, could damage the local environment over time.

Past Construction Activities

The Inland Empire Brine Line provides a cost-effective, sustainable means of disposal of non-reclaimable wastes for utilities and industry within the Santa Ana Watershed.   In October 2011, a catastrophic failure of the Brine Line occurred on Reach 5, a 22 mile portion of the Brine Line that provides service to customers within Eastern Municipal Water District’s service area.  Subsequent excavation and repair of the brine line revealed the pipe is “out of round” or slightly oval.

SAWPA performed extensive investigative work in the area of the failure to determine the quality of the original construction and the structural integrity of the Reach V pipeline.  The work included exposing the pipeline to determine the composition and compaction of the soil around and over the Brine Line and to measure the pipe ovality.  Testing of the soil and visual inspection revealed poor compaction in the pipe bedding and trench backfill, pipe deflection in the range of 2.7 – 7%, large cobbles in the backfill and no sand in the pipe zone.

In September 2012, SAWPA convened a panel of pipeline experts to evaluate the data and investigative work completed to date, comment on the possible cause(s) of failure, and evaluate options for rehabiliation or replacing the pipeline.  The panel concluded the pipe failure was caused by a variety of factors that combined to develop an over-deflection condition and ultimately a failure at the pipe joint.  The expert panel recommended rehabilitation or replacement of pipe in over-deflected areas and to prepare a condition study and risk assessment to identify potential high risk areas and rehabilitation methods.

In February 2013, SAWPA hired RMC Water and Environmental to perform a risk assessment of the Reach V Pipeline. The work included preparation of a pipeline condition study to evaluate approximately eight (8) miles of Reach V.  The results of the study found that of the 41,000 feet of pipe evaluated, about 21,000 feet of pipe were in the high and medium risk categories and recommended repair with a trechless repair method such as a cured-in-place pipe lining (CIPP).  The remaining 20,000 feet of pipe were placed in the low risk category for continued monitoring through periodic CCTV inspection.  The installation of several maintenance access structures and isolation valves were recommended in order for by-pass pumping during installation of the CIPP liner and in the future for pipeline inspection and cleaning.  In addition, the replacement of 20 air vacuum valves was recommended to prevent the possibility of pressure surges on the system which could potentially damage the pipeline.

In September 2013, SAWPA hired Dudek Engineering to implement the design of the Inland Empire Brine Line Reach V Rehabilitation and Improvement Project.  The work includes preparation of preliminary design, final design, and preparation of plans and specifications for the construction of the project.  The work is a result of the Pipeline Condition Study recommendations completed in May 2013.

Final construction plans and specifications for the project were completed in July 2014.  The project as presented in plans and specifications includes installation of 23,000 feet of Cured-in- Place-Pipe (CIPP) within the existing 24-inch polyvinyl chloride (PVC) pipe.  CIPP is a lining system in which a felt tube or liner is impregnated with resin and inserted in the existing pipe.  The liner is inverted in the existing pipe by water or air pressure through an existing manhole or access pit.   The fluid pressure expands the liner into position, giving the liner a tight fit against the inner wall of the existing pipe.  Once in place, the resin material is allowed to harden or cure through heating of the water or air to a set temperature of about 180 degrees.  The cure process can take several hours and is dependent on the length and thickness of the lining.  By-pass pumping of exisiting flows is necessary with this rehabiliation method.  Four separate by-pass systems will be necessary to implement the project.  The longest by-pass is about 12,000 feet.  In order to by-pass flows around the CIPP work areas five 5 maintenance access structures will be constructed that include a mainline shut-off valve and by-pass connections to connect the 18-inch High-Density Polyethylene (HDPE) by-pass pipe.  Fourteen (14) additional maintenance access structures will be constructed to provide future access to the pipeline for inspection and cleaning.

In August 2014, SAWPA issued a notice inviting bids for construction of the project.  On October 21, 2014, SAWPA awarded the construction of the project to Charles King Company.  The total contract amount is $12,561,000.  A notice to construct was issued to the contractor in January 2015.  The construction is anticipated to be complete in late 2016.    Funding for the Project is through the California State Water Resources Control Board Clean Water State Revolving Fund Loan Program.