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City of Santa Clarita, Overlay and Slurry Seal Program

Santa Clarita, CA
BG of Energy Industry

Twining has held the Annual Overlay and Slurry Seal contract with the City for multiple fiscal years.

Twining performs construction materials testing and inspection at various project sites and the batch plant. Our firm performs mix design verification and laboratory testing.

Twining also assists the City in performing slurry seal placement inspection and testing. During plant inspection services for this project, Twining provided asphalt binder plant inspection as well and identified viscosity and blending issues that the supplier was experiencing. Through this proactive inspection approach, not a single out of compliance load of rubberized asphalt concrete was shipped to the project.

Our team coordinates with the construction team and the City Public Works inspector to resolve issues during construction as needed. Our team inspects and verifies that all construction materials are in total compliance with applicable rules and regulations.


  • 2019 League of California Cities Local Street and Road Award Program
  • 2019 Construction Management Association of America, Southern California Chapter Public Works Project Achievement Award

“The whole team goes above and beyond to make project sucessful.”

– Francisco J. Lujan,
Former Santa Clarita Administrator

City of Santa Clarita
Services Provided
Asphalt Testing
Special Inspection