Diversified Environmental Field Services

Diversified Environmental Field Services offers professional soil testing, soil gas sampling, remediation, and pilot testing to ensure safe environmental practices. We’re a small, experienced team offering hands-on field support for environmental consultants and engineers across Southern California. Whether it’s soil testing before a construction project or remediation during a cleanup, we show up on time, ready, and with the right tools. For over 20 years, DEFS has been the go-to partner for accurate pilot testing, dependable soil gas sampling, and trusted field solutions. We don't just send techs we work as part of your team.