The Gwinnett County Department of Water Resources will offer a gardening/composting workshop from 7 p.m. to 8:30 p.m. Sept. 15 at the Gwinnett Justice and Administration Center Auditorium, 75 Langley Drive, Lawrenceville.

Those who attend and who live in unincorporated Gwinnett or the City of Lilburn will qualify for a 5 percent stormwater utility fee credit for the following year. To pre-register, send an e-mail with your name, address and phone number to dwrswreg@gwinnettcounty.com or call 678-376-7126.