Construction Updates

Pipeline Construction Update – May 2016

 

As a follow up to the February 2016 Pipeline Construction Update, the Pipeline Contractor, Steve P. Rados Inc. (SPR), successfully completed the replacement of the electrofusion saddles at the end of March.  Each replacement was completed by a certified electrofusion installer as well as witnessed by an inspector.  Once the saddle replacements were completed, SPR filled the pipeline with water and pressure tested the new couplings and factory manufactured T’s as specified in the contract.  All sections of the pipeline passed the pressure test in mid-April and SPR proceeded to complete the final patch paving of the road where the saddles were replaced.

At the end of April, SPR and the Operations Staff from the Lincoln Waste Water Reclamation Facility (WWTRF) started to pump treated effluent water down the pipeline in order to test the new pump station at the SMD-1 Sewer Treatment Plant.  The Engineer ran the pump station through a series of tests and scenarios and confirmed the new equipment worked and displayed data properly. Water will continue to be pumped down the pipeline until the SMD-1 Sewer Treatment Plant is taken offline.

The Regional Sewer System is still anticipated to be placed into service during June of 2016 with the final decommissioning, demolition, and construction activities at the SMD-1 Sewer Treatment Plant complete by the end of August of 2016.

Clean-up along the pipeline route is in progress and the final road restoration requirements are being confirmed and coordinated with Placer County Department of Public Works. Final roadway restorations will start and hopefully complete by July of 2016.

If you have any further questions or inquiries, please consult the Project website, www.regionalsewer.org or contact the Project Resident Engineer, Mr. Jack Harbour at 530-601-3551.

Pipeline Construction Update- Saddle Connection Replacement Process- February 2016

Construction activities on the Regional Sewer Pipeline reached basic completion in late December 2015. The pipeline has been installed over its entire 13.5 mile length from Highway 193 to the SMD-1 Wastewater Treatment Plant on Joeger Road near Highway 49. During quality control testing of the pipeline in September and October of 2015, several of the saddle connections to the pipeline failed, which required additional field investigation and evaluation of reliability of the saddle system. The saddles are an attachment made to the main pipeline using an electrofusion process, where heating elements in the saddle attachments provide bonding to the high density polyethylene (HDPE) pipe, and provide for ancillary control components, such as vacuum breakers and low point drains. Follow up investigation of the cause of failure was limited to pressurizing the entire pipe system. Upon full evaluation of the operating and design criteria of the pipeline, the Project Team concluded that the long term reliability of the electrofusion saddle system does not meet the failsafe operational criteria of the pipeline, and a decision has been made to remove all 68 saddles, and replace them with factory manufactured T’s that are produced under factory quality control and testing, which is conducted at pressures substantially above pressures available for testing in the field, and significantly above the pipeline maximum pressure.

The Pipeline Contractor, Steve P. Rados, Inc. (SPR) will be commencing installation of the factory replacement T’s in early February 2016, with the field installation to be complete in May of 2016. Final road restorations and site clean-up along the pipeline route will follow the construction activities, and be coordinated with Placer County Department of Public Works. Final roadway restoration will be accomplished during the summer of 2016 in conjunction with other County road maintenance and rehabilitation programs.

The Regional Sewer System will be placed into service during June of 2016 with the final decommissioning, demolition, and construction activities at the SMD-1 Sewer Treatment Plant complete by the end of August of 2016.

Replacement of the saddle fittings will be much less intrusive in the roadway than the general construction of the past year. Every effort will be made to maintain open through traffic during construction periods. The projected duration of activity at any one individual location is anticipated to be between 3 and 5 days.

If you have any further questions or inquiries, please consult the Project website, www.regionalsewer.org or contact the Project Resident Engineer, Mr. Jack Harbour at 530-601-3551.