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TRTP Undergrounding
TRTP Hotline Website and Email Card

Southern California Edison (SCE) is working in the TRTP right-of-way. SCE has hired multiple contractors to complete the underground construction in multiple locations in order to keep the project on time to meet deadlines to deliver renewable energy. It is anticipated that work will continue through late 2016 / early 2017.

SCE TRTP 3rd Quarter Newsletter September 2015
SCE TRTP 2nd Quarter Newsletter June 2015
SCE TRTP Transition Stations Brochure - June 2015
SCE TRTP Project Update Presentation to City Council - June 23, 2015

Construction Activities from February 8 - 14, 2016 
During the period of February 8 - 14, 2016 construction activities as part of Southern California Edison’s (SCE’s) Tehachapi Renewable Transmission Project (TRTP) will include the following:    

  • Surveying, dust control, vegetation, net inspection, soil and material exportation throughout the project route
  • Tower construction east of the Eastern Transition Station at Pipeline Avenue and SR71
  • Mainline trenching which includes trenching and increased truck traffic along adjacent streets at the following locations: South of Prairieview Circle (west of Lost Trail Drive), South of Garden Court (west of Cork Drive)
  • Vault excavation/installation work south of Garden Court and north of Alder Place (east and west Lobelia Drive and Cork Drive)
  • Horizontal directional drilling south of Prairieview Circle (west of Lost Trail Drive), south of Garden Court (west of Cork Drive). HDD Brochure    
  • Grading work south of Eucalyptus Avenue (east and west of Canon Lane) and south of Eucalyptus Avenue (east of Western Hills Country Club). 
  • Concrete restoration at Avenida Cabrillo and partial lane closure.
  • Landscape restoration on Chino Hills Parkway and partial lane closure.
  • Transition station construction eastern Transition Station (Pipeline Ave north of Chino Hills Parkway), western Transition Station (southwest of western end of Eucalyptus Avenue).  Transition Station Brochure
  • Wire Stringing activities west of the Western Transition Station in Chino Hills to Tonner Canyon in unincorporated Los Angeles County, east of Pipeline Avenue and continuing across the 71 Hwy. in Chino until just west of Central Avenue.  *A small helicopter will be used to position equipment and personnel.  There will be periods when the helicopter will hover in the project area to perform these activities.   
  • Cable pulling activities just south of Prairieview Circle (west of Lost Trail Drive) and south of Garden Court (west of Cork Drive).

*Please Note: Schedule is tentative and may change depending on weather and other factors.

A water truck will be on the utility right-of-way to help control fugitive dust. If at any time you have concerns, please call SCE at (877) 795-8787. While dust is a part of construction and cannot be completely eliminated, SCE implements measures to minimize impact and to ensure compliance with dust level requirements. A water truck will be used in the utility right-of-way to minimize such dust. 

Eastern Transition Station
Work at the Eastern Transition Station, located between Pipeline Avenue and the Chino Valley Freeway (SR71) is underway.  There will be periods of night work at this location in order to reduce construction noise impacts to the Montessori School of Chino Hills.

Horizontal Directional Drilling
Horizontal Directional Drilling (HDD) is a method of installing underground utilities when trenching work is impractical to perform.  The 500 kV underground project in Chino Hills will require two HDD sites along the route.  Southern California has developed an informational brochure that provides additional information.  HDD construction activity is anticipated to begin in November of 2014 and continue through the end of 2015.

Construction hours are:
Chino Hills locations: 7:00 a.m. - 7:00 p.m., Monday – Friday; 8:00 a.m. – 6:00 p.m., Saturday
Chino locations: 7:00 a.m. – 8:00 p.m., Monday – Saturday  
Tips for Minimizing Construction Impacts 
SCE is committed to minimizing any inconvenience and ensuring the safety of both the public and project personnel during this work. In addition to SCE and contractor efforts to minimize the impacts to residents and businesses during construction, here are some simple tips that may help you reduce construction disturbance:

  • Close windows and doors facing the construction area in order to reduce noise and dust
  • Watch for project information updates to ensure you have the most up-to-date information about construction activities taking place in your area.

Stay Informed and Encourage your neighbors to sign up to receive updates, too! 

SCE Town Hall Was Held on October 9, 2013
Southern California Edison held a Town Hall Meeting back on October 9, 2013 regarding the Chino Hills Undergrounding of the Tehachapi Renewable Transmission Project.

If you missed the Town Hall Meeting or attended and have questions about the project, please call the TRTP project hotline at (877) 795-8787 and leave a message with your specific question and your call will be returned.  
TRTP History 

TRTP Chino Hills Undergrounding Project Area
Construction Area Map

SCE Undergrounding Presentation
For a general overview of the undergrounding plans for the Southern California Edison (SCE) Tehachapi Renewable Transmission Project (TRTP), review the SCE update which was presented at the Tuesday, September 23, 2014 City Council meeting by clicking on the links below: 
Undergrounding Construction Update Video (September 23, 2014) 
Undergrounding Construction Update PowerPoint 
Southern California Edison TRTP 3rd Quarter Newsletter

Construction Update:
Southern California Edison Construction Traffic Impacts Update (February 2015)