Costa Mesa Sewer Rehabilitation Along the I-405

CONSTRUCTION UPDATE

A lot of progress has been made on rehabilitating the sewer pipeline. We appreciate your patience as this work is being done to enhance the aging infrastructure to extend the life of the regional sewer system another 25-30 years. 

🚧LOCATION: Pacific Arts Plaza on Park Center Drive

What:  Manhole access improvements, include adding a new gate and driveway entrance location to an existing manhole. 

When: Ongoing – early August*

Hours: Monday – Friday, 7 a.m. – 5 p.m.

What to Expect:  No full road closures are to be expected. The impacts are anticipated to be minimal outside the work area other than increased noise and activity due to the construction.

🚧 LOCATION: Brookview Community

What: Manhole access improvements, includes adding a wider gate opening and driveway

When: Immediately after Pacific Arts Plaza work is completed, starting approximately early to mid-August and lasting 3-4 weeks.

Hours: Monday – Friday, 7 a.m. – 5 p.m.

What to Expect:

• Designated parking spaces near the work will be unavailable during working hours.
• Increase construction activity and noise levels are expected.

🚧 Various Locations Along Recently Rehabilitation Pipeline

With the rehabilitation of the sewer pipeline recently completed, crews are coming back to rehabilitate the insides of the manhole and replace manhole covers. 

When:  Starting in August and lasting approximately 2-3 months

Hours: Monday – Friday, 7 a.m. – 5 p.m.

What to Expect: Work locations will move throughout the project area, with approximately 4-7 days per manhole. 

🚧 STREETS NEAR WORK AREA: South Coast Drive, San Leandro Lane, Concord Street

The sewer pipeline crossing under the 405 freeway will be rehabilitated using the cured-in-place-pipe (CIPP) method.  More information about CIPP is listed at the end.

When:  Schedule is TBD.  We are coordinating with the city on other non-OC San construction activity in the area.  Exact date will be provided when schedule is confirmed.

Hours: Nightwork 9 p.m. – 6 a.m. 

What to Expect:  

• Increase in activity and noise levels from construction vehicles and equipment.
• Vactor trucks will be used to vacuum wastewater out of the pipeline from a nearby manhole to keep flows out of the section of pipe that will be rehabilitated. This activity can be loud.
• Some odors may be noticeable in the immediate area but are temporary.

*All dates and times are subject to change due to operational factors or inclement weather.

About Cured-in-Place Pipe (CIPP)

A pre-measured liner is delivered in a refrigerated truck and inserted through a manhole opening into the existing pipeline. After the liner has been inserted, it is filled with water that is heated to a certain temperature and cured for several hours. When fully cured, the liner now acts as the new pipeline. Once the CIPP operation begins, it cannot be stopped until completed, thus requiring the 24/7 continuous work. Crews will be onsite for monitoring throughout the entire process.