Lake Hartwell pushes its coves right up to Lavonia's back door, and on a July morning the water lies like glass until the first boat wakes it. Foster's Lawn Care Inc. is already working by then — mowing, cutting the edge along the walks, trimming fence lines and shore paths where the grass runs wild toward the water. Franklin County heat builds all afternoon, so early starts and tight routes are simply how the day gets done. What comes of it is a level cut, a firm border and a drive blown down, one week after another. Lavonia, Hartwell, Toccoa and the lake roads that link them.