The Sacramento Bee reports that “Steven Bohlen, the head of California’s embattled oil and gas division, is resigning after about 18 months on the job.”  

“In a resignation letter Monday obtained by The Sacramento Bee, Bohlen, supervisor of the state’s Division of Oil, Gas and Geothermal Resources, said he plans to return to Lawrence Livermore National Laboratory, where he previously worked.”  

“He said in an interview that he will stay on as an unpaid science adviser to the division.”