About JSA
Founded by family.
Focused on you.
Jesus Sustaita founded JSA more than 30 years ago. Today, his son Christopher leads the company, carrying forward the same commitment to personal attention.
Christopher Sustaita
Leads JSA today, with a focus on clear communication and attention to each client’s project.
Jesus Sustaita
Founder & Senior Environmental Consultant. Continues to support technical review and quality assurance.
We treat every client with the attention we would give our only client—whether you represent a city, an agency, a business, or your own home. Based in Fresno, we serve projects across California.
CDPH lead disciplinesDOSH asbestos disciplinesIndustrial hygiene support
30+ yearsA family-founded California company
Insurance projectsLoss-related assessment and documentation
DGS certifiedCalifornia Small / Micro Business
English & SpanishClear, responsive coordination