Tri-County Job and Career Fair Employer Registration. Early Bird Registration Deadline Feb. 27, Job Fair on April 7. College of Southern Maryland, La Plata Campus, Physical Education (PE) Center, 8730 Mitchell Road, La Plata. Employer registration for the Tri-County Job and Career Fair is open. Early Bird registration is $265 through Feb. 27 and $325 through March 27. The Tri-County Job and Career Fair is free and open to all individuals seeking employment. Employer registration is through CSM Career Services at www.csmd.edu/JobFair or contact Career Services at 301-934-7569 or CareerServices@csmd.edu.