Mark T Duffy
San Francisco, CA
Geologist
Verified Active
About
Mark T Duffy is a licensed Geologist in California. The credential is registered under license number 9330 and is currently active. It has been on record since 2016. Licensure is issued and verifiable through the California Board for Professional Engineers, Land Surveyors, and Geologists.
License Verification
License #
9330
Status
Active
State
CA
Expires
Nov 30, 2026
Board
California Board for Professional Engineers, Land Surveyors, and Geologists