The owners of vehicles damaged at UCLA parking garages by last week’s flood are expected to begin retrieving them today. The university announced Monday that it has established a loan-assistance program for students and staff whose vehicles were damaged. Information on the program is available the Campus Human Resources website at www.chr.ucla.edu. Sunset Boulevard was reopened Monday, six days after being closed down by a 20-million-gallon flood that resulted from a water main rupture and also inundated parts of the UCLA campus.