JD

John D Duffy

Shell Beach, CA Geologist
Verified Active
Verify this license on the California Board for Professional Engineers, Land Surveyors, and Geologists board

About

John D Duffy holds a Geologist license in California. The credential is registered under license number 5127 and is currently active. It has been on record since 1991. Licensure is issued and verifiable through the California Board for Professional Engineers, Land Surveyors, and Geologists.

License Verification

License # 5127
Status Active
State CA
Expires Feb 28, 2026
Board California Board for Professional Engineers, Land Surveyors, and Geologists
Verify at Licensing Board