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Update on TRTP Construction in Chino Hills and Chino

Update 3/30/2015

During the period March 30 – April 5 construction activities as part of Southern California Edison’s (SCE’s) Tehachapi Renewable Transmission Project (TRTP) will include the following:

Activity Location
Surveying - Throughout the project route
Grading work - Western Transition Station
- South of Eucalyptus Ave (east of Western Hills Country Club)
Mainline trenching - South of Garden Court and north of Alder Place
(east and west Lobelia Dr and Cork Dr)
(Trenching, including increased truck traffic along adjacent streets)
Trenching at Street Crossings - Pipeline Ave (There will be street lane closures and night work at this location)
Vault excavation/installation work - South of Eucalyptus Ave (west of Canon Ln)
- South of Hiddenspring Cir (west of Sleepyglen Cir)
- South of Eucalyptus Ave and North of Turquoise Circle N
(west of Coral Ridge Park)
- East of Calle Madrid (south of Paseo Tortuga)
- West of Chino Hills Parkway (north of Ave Marguerite)
Vault delivery - East of Calle Madrid (south of Paseo Tortuga)
- North of Champion Street (east of Little Bend Road)
- East of Morningfield Drive
- North of Avenida Marguerite (west of Chino Hills Parkway)
Horizontal directional drilling (HDD) activities - South of Prairieview Cir (west of Lost Trail Dr)
- South of Garden Ct (west of Cork Dr)
*A second drill rig will be added as part of the HDD work. The second drill rig will be placed on the SCE right-of-way, south of Garden Court / west of Cork Drive and will drill from east to west. Sound wall will be installed at this location to reduce construction impacts.

This work will take place within the existing utility right-of-way corridor in the cities of Chino and Chino Hills between the west end of Eucalyptus Avenue and the Chino Valley Freeway (71).

Eastern Transition Station

Demolition work at the eastern transition station, located between Pipeline Avenue and the Chino Valley Fwy (71) 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.

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 give us a call.

Tips for Minimizing Construction Impacts

SCE is committed to minimizing any inconvenience and ensuring public safety during this work. In addition to SCE efforts to minimize the impacts to residents and businesses during construction, here are some simple tips that may help you reduce construction disturbance:

  • Close all windows and doors facing the construction area in order to reduce noise and dust
  • Watch for information updates in the form of mailers, door hangers, etc. to ensure you have the most up-to-date information about construction activities taking place in your area.
  • Cover items such as vehicles and swimming pools

Construction hours are:

Chino Hills locations: 7 a.m. - 7 p.m., Monday – Friday; 8 a.m. – 6 p.m., Saturday

Chino locations: 7 a.m. – 8 p.m., Monday – Saturday

If you have any questions about the scheduled work or other project-related activities, please contact us:

SCE’s 24-hour toll-free line: (877) 795-8787
Email: trtp@sce.com

Questions & Answers

Visual Materials at Project Open House (Oct 2013)


In the News: Chino Hills / Chino Underground Construction

Construction Overview

Constructing the Underground Portion in Chino Hills and Chino

Beginning in early August 2014, SCE and its contractors will begin activities necessary for constructing the Tehachapi project underground in portions of Chino Hills and Chino. Below is a description of the construction activities.

Oct. 2014 Update

What you will see:

  • Clearing of vegetation and any impeding structures within the project area
  • Installation of chain-link fencing along the project area to ensure safety of the public and project personnel during construction
  • Trenching and underground drilling
  • Installation of underground electric transmission wires (500 kilovolt), conduit, vaults and related equipment
  • Installation of two (2) transition stations to enable wires to go from overhead towers to underground conduits at each end of the underground area; each station will be approximately three (3) acres in size, with an 8-foot perimeter wall with some equipment approximately 133-ft in height
  • Installation of two (2) new lattice steel transmission structures, one adjacent to each transition station described above, to feed the overhead wires into the stations
  • Use of large construction equipment, including cranes and drilling equipment
  • Periods of temporary lane closures and traffic control on:
    • Chino Hills Pkwy (between Carbon Canyon Rd and Eucalyptus Ave) and;
    • Pipeline Ave (between Chino Hills Pkwy and Eucalyptus Ave)
Extended periods of lane closures and traffic control

There are several major components associated with undergrounding a 500 kV line. The majority of the work will be completed using a method called “trenching.” Trenching generally refers to digging or excavating, which will be conducted with use of large construction equipment in order to install the electrical transmission facilities underground.

Most of the trenching work will be conducted within the utility right of way corridor. However, at times, Southern California Edison (SCE) crews will trench across residential streets and significant thoroughfares through the city, including Chino Hills Parkway and Pipeline Avenue. Construction activities may require periods of road and/or traffic lane closures.

The duration of the temporary lane closures will vary depending on the location:

  • At most residential streets, SCE crews will temporarily close half the street during construction and upon completion, the second half of the crossing will be constructed. This work typically takes approximately ten working days per residential street.
  • On Cork and Lobelia Drive, SCE crews will implement full street closures during construction working hours. This work will take approximately 15 working days per street to complete. (Note: at least one street, Cork or Lobelia Drive, will be open at all times).
  • At Chino Hills Parkway and Pipeline Avenue, this work can take up to 30 days at each location.

SCE understands that construction may be disruptive to daily activities of residents and area businesses. We are committed to minimizing impacts and ensuring safety of the public and project personnel during this work. Please visit the “More Information” tab on this web page for valuable information to help keep you safe when around construction areas.

Anticipated Construction Period
Approximate dates: Early August 2014 and continuing through 2016
Approximate hours

Chino Hills locations*:
Mon–Fri: 7:00 am–7:00 pm
Sat: 8:00 am–6:00 pm

Chino locations (west of Pipeline Ave)*:
Mon–Sat: 7:00 am–8:00 pm

*Hours are in accordance with city noise ordinance; may include limited 24-hour underground boring as needed

Note: Schedule is tentative and may change depending on weather and other factors, as well as additional regulatory clarification from the CPUC. Construction schedule may change to include extended hours as well as Sunday work.

Tips for Minimizing Construction Impacts

SCE understands that construction may be disruptive to daily activities of residents and area businesses. While dust during construction cannot be completely eliminated, SCE and its contractors are taking steps to minimize potential impacts to residents and businesses. To help minimize dust or noise from these project activities, residents may choose to close windows or doors facing the construction area and cover items such as vehicles and swimming pools.

Thank you for your understanding and cooperation as our project personnel work as safely and quickly as possible to complete these important electric system upgrades.

Contact Us

We’re here to answer your questions. Give us a call, send an e-mail or visit our web site if you have questions about construction related activities. SCE is committed to providing available information to minimize construction impacts to the extent possible.

Project hotline: (877) 795-8787
E-mail: trtp@sce.com
Project web site: www.sce.com/trtp