High-density library storage facilities are admittedly not too exciting but without them, our collections face some very serious problems. In case you missed this illuminating Op-Ed in the Daily Cal from professors Todd Hickey and Geoffrey Koziol, I encourage you to check it out and express your concerns to your campus representatives.
While there is little public information about this imminent crisis, a team of librarians from CDL and most of the UC campuses have prepared recommendations to free up space in both NRLF and SRLF called the UC shared Print Road Map for 2014-2018 which provides further insight but no long-term solution.