BY ADRIANA HERNANDEZDaily Post Staff Writer San Mateo County Sheriff Ken Binder has appointed a new captain to act as police chief in North Fair Oaks, Portola Valley and Woodside. Capt. Brandon Hensel started his new position on Sunday, according to sheriff’s spokeswoman Gretchen Spiker. Hensel is filling the vacancy left by Frank Dal Porto, who was promoted to assistant sheriff on Jan. 16. Hensel has worked in the sheriff’s office for approx…