I hope he gets an environment job this summer, too, not only because it would make him happy, but because it would increase the odds of his getting the Real Job, using his degree, once he graduates.
But if not, he has plenty of job skills and self confidence, and he can get a better “pay the bills” job for six or eight months until graduation. One reason he was hanging in at Chipotle was that he liked most of his coworkers, but a lot of the people he liked have already quit!