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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 August 8 to August 21, 2016 

During the period of August 8 - 21 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.
  • Horizontal directional drilling, including moving sound walls, south of Prairieview Cir (west of Lost Trail Dr), south of Garden Ct (west of Cork Dr), and south of Garden Court (Cork Drive to east of Lobelia). HDD Brochure    
  • Grading work south of Prairie View Circle (west of Lost Trail Drive), south of Garden Court (west of Cork Drive), and south of Garden Court 9 Cork Drive to east of Lobelia).
  • Landscape, fencing and concrete restoration south of Prairie View Circle (west of Lost Trail Drive), south of Garden Court (west of Cork Drive), and south of Garden Court 9 Cork Drive to east of Lobelia).
  • Transition station construction at Eastern Transition Station (Pipeline Ave north of Chino Hills Pkwy) and Western Transition Station (southwest of western end of Eucalyptus Ave).  Transition Station Brochure
  • Cable installation (pulling) activities, west of Canon Lane.  There is potential for this work to continue through 9:00 pm in which case portable work lights and flashlights will be in use.  Reflector shields will direction illumination away from homes to the extent possible.

*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. 

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)