• Pipeline Operations (Mechanical) | Transmission (Pipeline Design) | Storage
    (Cota, Guava, Mason Street, Olympic Orangethorpe, Westridge Bridges | O&M Transmission)
  • PSEP (Pipeline Safety Enhancement Program)
  • Mobile Home Utility Upgrade Program (conversion of electric & natural master-metered services at Mobile Home Parks/Manufactured Housing Communities)
  • Transmission (Piping Design) | Integrity (Mapping & Records) (Olive Hill, Willow Street, & Casa Mira View Bridges, Line 49-11 Abandonment for Pipeline Safety Enhancement, Bear Valley North Parkway Pipeline Relocation Project, and Final Features Study for Line 49-15 for Pipeline Safety Enhancement)


  • Tehachapi Renewable Transmission Project (TRTP) (Construction Project Management | QA QC on underground pipeline work for natural gas)
  • Crenshaw/LAX Transit Corridor Project (CAD drawings for the Crenshaw Silver Line Metro Rail Project for the Waterproofing and Tunneling Departments, and inputting Survey Data Points)
  • California High Speed Rail (CHSR) (Civil Utility Engineering | CAD Management – annotate, analyze and verify utilities and layout in CAD, and generate data for environmental footprint GIS test data)
  • Westside Transit Corridor (Purple Line)
  • I-405 Freeway (Sepulveda widening pass)

Why Choose Us?

A highly sought-after engineering design and technical resource firm, Darnell Technical Services was founded more than 20 years ago.

Prepare for the unexpected

Please let us know if you have a question, want to leave a comment, or would like further information about our services.