That number seems so high for a single, healthy, young individual.
Edited to add that you might be able to get away with the lowest cost plan if you don’t think you will be using the insurance much – just for accidents or major illnesses that might require hospitalization. But you would need to check with the college to see if their coverage amounts are acceptable to SLO.
And SLO should/will also have a student health center where you can go for minor illnesses or injuries – usually the visits are free but the colleges themselves charge a mandatory, annual fee for access to the health center. Based on 3 colleges I know, that fee can be as much as $700 or so a year.