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Combining Excellent Service with Quality Engineering 

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Geotechnical Engineering

  • Percolation Testing/Septic System Design

  • Infiltration Testing

  • Soils Reports

  • Phase 1-4 Environmental Studies

Construction Inspection

  • Compaction Testing

  • Grading Inspection

  • Special Inspection

Material Testing

  • Concrete

  • Asphalt-concrete

  • Structural steel

  • Aggregate or road base materials

  • Pile Load Testing

Geological Studies

  • Fault Studies

  • Hydro-Geology

  • Liquefaction Analysis

  • Slope Stability Analysis



Bruin GSI provides geotechnical services to clients ranging from individual home owners, to large development companies.

Bruin GSI has the knowledge and experience to provide services for any type of project, whether it’s commercial, industrial, green energy (solar and wind) or residential development.

We offer unlimited access to our team in order to answer questions, discuss design concepts or relate any concerns about your project. Bruin GSI believes in satisfied clients. We want your reference and will work diligently to get it.

With over 30 years of soil and material related experience and the relationships we have nurtured with local agency personnel, Bruin GSI assures quality engineering with competitive pricing for a smooth submittal and approval process to the governing agency.



Year Established




Green Energy






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(661) -273-9078

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Head Office

44732 Yucca Avenue, Lancaster, CA 93534

Tel: 661-273-9078

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To apply for a job with Bruin GSI, please send a cover letter together with your Resume to:

Accessibility Statement

Conformance Status

The Web Content Accessibility Guidelines (WCAG) defines requirements for designers and developers to improve accessibility for people with disabilities. It defines three levels of conformance: Level A, Level AA, and Level AAA. Bruin GSI Home is fully conformant with WCAG 2.1 level AA. Fully conformant means that the content fully conforms to the accessibility standard without any exceptions.


We welcome your feedback on the accessibility of Bruin GSI Home. Please let us know if you encounter accessibility barriers on Bruin GSI Home:

  • Phone: 661-273-9078

  • E-mail:

  • Visitor Address: 44732 Yucca Ave Lancaster, CA

  • Postal Address: 44732 Yucca Ave Lancaster, CA

We try to respond to feedback within 5 business days.

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