Biologist, biotech entrepreneur and Marshall resident Corey Goodman does not hesitate to lend his expertise to problems great and small. Before he became involved in the Drakes Bay Oyster Company debate, he helped locate the source of a virus contaminating Tomales Bay oysters and exposed a surreptitious plan to allow the expansion of Point Reyes National Seashore to the east shore of the bay. His determination will come in handy in a new role announced…