The federally-endangered San Francisco garter snake (SFGS) and its food of choice  the federally-threatened California red-legged frog (CRLF)  may get new landlords at their beachside wetland home  the 417-acre San Francisco-owned and -managed Sharp Park in Pacifica  if the San Francisco board of supervisors passes legislation today that would clear the way for a transfer of its management to the National Park Service