42ND ANNUAL COLUMBIA COUNTY MERCHANTS FALL FAIR: opens at 5 p.m.; at the Columbia County Fairgrounds off Columbia Road across from Patriots Park; will run through Saturday with gates opening at 5 p.m. weekdays, and noon Saturday; fair hotline is (706) 210-3603.
MOLD SEMINAR BY DR. ANDREW CAMPBELL: 6:30 p.m.; Jabez Sanford Hardin Performing Arts Center, in Evans; (706) 595-7620.
TUESDAY NIGHTS TOGETHER, SINGLES FELLOWSHIP: 7 p.m.; administration building of First Baptist Church of North Augusta, 625 Georgia Ave.; for area single adults; fellowship and Bible study; (803) 279-6370.
MONA-VIE TASTING PARTY: 7 p.m., Balancing Your Health, 4901 Columbia Road, Grovetown; (706) 364-2270.
TUESDAY'S MUSIC LIVE: Pianist Konstantin Soukhovetski; noon Tuesday, St. Paul's Episcopal Church, Sixth and Reynolds streets at Riverwalk Augusta; lunch by Very Vera, $7, reservations required for lunch; call (706) 722-3463.
FREE WORKSHOP: 10 a.m. to 4 p.m. Tuesday; East Central Regional Hospital, 3405 Mike Padgett Highway; consultants from Yale University will present free workshop; held by the National Alliance on Mental Illness.
HARLEM'S LAUREL AND HARDY MUSEUM: 10 a.m. to 4 p.m.; downtown Harlem; closed on Sundays and Mondays; (706) 556-0401.
AIKEN GENERAL AVIATION COMMISSION: 5 p.m. to 6 p.m.; Aiken Municipal Airport.
AIKEN DESIGN REVIEW BOARD: 6:30-7:30 p.m.; room 214 at City Hall.
SPEECH AND HEARING SCREENINGS: By appointment Monday-Friday, University Hospital Speech and Hearing Center, 1430 Harper St., Suite C3, or Professional Center 2, Suite 102, 4321 University Parkway, Evans; $10 for children and adults; (706) 774-5777.
HEALTH RISK ASSESSMENT : Daily, University Hospital, Weight Management and Nutrition Center, 4106 Columbia Road; $35; registration required; (706) 868-3241.