Analytical Writing Placement Exam Exemptions

I got accepted into UCSB, but to be exempt from taking the writing placement exam I would have to have at least a 680 for the SAT writing section or at least a 30 on the ACT writing section. When I applied during November, I only sent my SAT scores but not my ACT. I only got 620 for the SAT, but on one of my times taking the ACT I got a 30 for the writing section but I did not send it. Is it too late to send the ACT score? Will anything bad happen if I send the ACT score now, since I believe that you were supposed to send the UCs all your scores?