Established in 2004, we provide quality soil testing, material testing, enviromental site assessments and engineering services to the Antelope Valley and surrounding areas at competitive rates.Friendly, reliable and experienced, Bruin GSI will help bring any project from conceptual design to construction completion, no matter how small or large.Bruin GSI provides geotechnical services for all types of development: Residential (single-family, subdivision, multi-family developments), commercial, light and heavy industrial, green energy (solar and wind) as well as capital improvements.