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

Construction Update:  July 27th - August 2nd
Southern California Edison contractors will be trenching across Chino Hills Parkway, south of Eucalyptus Avenue, adjacent to Veterans Park, as part of the project to underground the Tehachapi Renewable Transmission Project. Work will be conducted from 8:30 am to 7:00 pm Monday through Friday. One lane of travel will be maintained in each direction during the trenching. The majority of the work will be occurring in the southbound lanes starting in early August.  

Construction activities as part of Southern California Edison’s (SCE’s) Tehachapi Renewable Transmission Project (TRTP) will include the following:            

  • Surveying, dust control, and vegetation net inspection throughout the project route
  • Grading work south of Calle Bienvenida (east of Avenida Cabrillo), north of Paseo Del Palacio and south of Calle Bienvenida (west of Calle Madrid), east of Calle Madrid (south of Paseo Tortuga), west of Chino Hills Parkway (north of Avenida Marguerite)
  • Mainline trenching and increased truck traffic on adjacent streets at south of Eucalyptus Avenue (west of Avenida Cabrillo), south of Eucalyptus Avenue and north of Turquoise Circle N (west of Coral Ridge Park), between Maplewood and Foxwood, Chino Hills Parkway
  • Trenching at street crossings on Morningfield Drive (through July 31st), Chino Hills Parkway (through August 31st), Little Bend Road (through July 31st), Pipeline Avenue (through July 29th) -- there will be lane closures at these locations
  • Vault excavation/installation work south of Eucalyptus Avenue (east of Western Hills Country Club), south of Eucalyptus Avenue and north of Turquoise Circle N (west of Coral Ridge Park), south of Calle Bienvenida (east of Avenida Cabrillo)
  • Vault delivery south of Eucalyptus Avenue (east of Western Hills Country Club)
  • Horizontal directional drilling - south of Prairieview Circle (west of Lost Trail Drive) and south of Garden Court (west of Cork Drive)     
  • Lattice steel tower foundations - west of the Western Transition Station (for more information please see the SCE TRTP Transition Stations Brochure - June 2015

*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
Demolition 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)