Sondra Nierenberg will be the facilitator. Cobb County Water Lab Training Room, 662 So. Cobb Drive, Marietta All these books are available from the Cobb County Library System. Our meetings are open to the public and are held at 10:15 am at the Cobb County Water Lab, Bldg. B, 662 South Cobb Drive, Marietta. Enter from Atlanta Road.