EPT & ELM

Hello everyone, I’m Exempt from taking my ELM (600 on the math portion of the SAT) placement test but Conditionally Exempt from my EPT (received a score of 490 on the CR portion of the SAT). Can someone clear the difference between exempt and conditionally exempt to me? Also, will I still be required to take the EPT if I pass both semesters of senior ERWC with an A? Thank you in advance!