Meet the team

Sergio Sanchez

Sergio Sanchez

Regional Manager East Texas

Sergio has over 13 years of experience in the environmental consulting industry with specific emphasis on project management. Sergio's areas of technical expertise include asbestos, mold, and lead inspections, turnaround support services, asbestos surveys, air monitoring, and safety audits. He is primarily responsible for the day-to-day management of the Turnstone EH&S, Inc. Houston and East Texas Regional operations, including client relations, field management interface, and continued business development and oversight. Sergio is an experienced environmental professional recognized by the state of Texas as a licensed Asbestos Project Manager, Asbestos Air Monitoring Technician, and Asbestos Building Inspector, and is an Authorized Asbestos Training Instructor.

Dr. Brent Mattox

Dr Brent Mattox

Corporate Industrial Hygienist

Dr. Brent Mattox brings over 30 years of experience in environmental and occupational health to Turnstone. He has a Bachelor of Science degree in Botany from Marshall University, a Master of Science in Industrial Hygiene from the University of Central Missouri, and a Ph.D. from the University of Missouri in Leadership and Policy Analysis. Work experience includes development and management of industrial hygiene programs, and as a consultant in industrial hygiene. Areas of expertise include IAQ, OSHA VPP, general industrial hygiene, and health and safety program development. He is a Certified Industrial Hygienist (CIH), a Registered Sanitarian, and is a Licensed Mold Assessment and Asbestos Individual Consultant.