Irreplaceable ?Photograph ‘Vandalized \BERKELEY, Calif. (AP) —A vandal sprayed chemicals ion a giant “irreplaceable’1 iprint of a Richard Avedon tphotograph exhibited at the IUniversity Art Museum, authorities said. £The photograph was a 10- lt;■foot high, 35-foot wide portrait 1of pop-artist Andy Warhol and rmembers of The Factory, a New York-based group of ae- £tors, poet s, ar tists and ot hers swhose doings charmed the fashionable and perplexed the average person.' Campus police arrested Eric Weill, 40, for investiga-' tion of felony vandalism after museum guards apprehended him Wednesday shortly before closing. The print was sprayed with a chemical mix tentatively thought to be iodine and water,' museum officials said. I