When the Marin County Board of Supervisors meets at 9 a.m. Tuesday, it will receive an update on the Muir Woods memorandum of understanding with the National Park Service. The board will also consider approving a $1.5 million grant and a $1.1 million loan for the acquisition of a property at 2626 Sir Francis Drake Blvd. in Fairfax for permanently affordable housing. The board will reconvene at 5:30 p.m. for an informational workshop on the county’s fair housing work plan. Reporter @HalsteadRichard post live. Join the conversation on Twitter with #MarinSupes.