Our Team

Luis Hernandez

Luis Hernandez

Chief Executive Officer

As Chief Executive Office, Luis Hernandez oversees all business units within Turnstone, including client management, employee relations, business development and overall financial performance. With over 15 years of experience in the field of health and safety, project management and compliance, Luis is responsible for the ongoing operational infrastructure of systems, processes, and personnel designed to meet the expectations and needs of our clients. Luis' areas of technical expertise include industrial hygiene services, turnaround support services, asbestos surveys, air monitoring, and safety audits.

Andy Steranko

Andy Steranko

Director of Operations

Andy Steranko brings over thirty-five years of experience in environmental, health, and safety consulting to Turnstone. He has excelled at serving customers in many market sectors including petrochemical, manufacturing, construction, and commercial clients. Areas of expertise include environmental sampling, asbestos and lead program management, and technical training. Andy serves Turnstone as a TDSHS Asbestos Consultant and Training Manager and a TDLR Mold Consultant.

Michael Fannin

Michael Fannin

Operations Manager

Mike Fannin, our Operations Manager, has 15 years of experience in the areas of asbestos, indoor air quality and compliance. Mike is responsible for all aspects of project management, including control of project costs, scheduling, compliance, and quality control. Mike strives to establish long-term professional relationships with clients by providing superior service from start to finish and within budget.

Arnold Peters

Arnold Peters

Certified Industrial Hygienist

Arnold Peters is our Corporate EHS Manager and CIH. Arnold is responsible for assisting clients with developing plans to assess potential occupational exposures, developing sampling procedures and mentoring our Industrial Hygiene (IH) Technicians. After graduating from University of Texas with a Chemistry degree, he worked in laboratories analyzing industrial hygiene samples. He transitioned into conducting industrial hygiene field work and advanced into ever increasing roles of responsibility. He has over 15 years of experience as a Certified Industrial Hygienist (CIH) and Certified Safety Professional (CSP) in chemical manufacturing settings. Areas of expertise include hazard assessment, lab safety, indoor air quality, and technical research. Arnold also serves Turnstone as a TDLR Licensed Mold Consultant.

Alonso Montero

Alonso Montero

International Trainer

Alonso holds a Ph.D. in Geo-Environmental Engineering from Hokkaido University with several years of experience working in environmental and fuels projects for the U.S. Military in Japan. Credentials include: Registered Environmental Professional (REP) by the American National Registry of Environmental Professionals (NREP), Certified Industrial Hygienist (CIH) by the American Board of Industrial Hygiene, AHERA asbestos certified building inspector, AHERA asbestos contractor/supervisor, EPA Lead-Based Paint (LBP) inspector and supervisor, Certified Radon Measurement Provider and Certified Radon Residential Mitigation Provider by the U.S. National Radon Proficiency Program (NRPP).

Laura Morales

Laura Morales

Regional Project Manager

Cynthia Fisher

Cynthia Fisher

Quality Assurance/Quality Control

Karen Garcia

Karen Garcia

Accounts Manager