Late July, when thunderstorms roll east over Macomb County and leave the evening washed and glowing, is the finest hour to stand back and look at a lawn. Sunsational Services keeps Chesterfield Township yards mowed, trimmed and edged straight through the growing months, when a week of heat and rain can add inches overnight. Cleanups in spring and fall take the year in hand at both ends — beds opened up, leaves gathered, the turf left orderly. The evidence is plain and immediate: a straight line at the sidewalk, an unbroken sweep of green from the house to the curb. Ordinary work, done attentively, for the neighborhoods off 21 and 23 Mile.