February squalls come over the Route 8 ramps sideways, filling in a cleared apron on Coram Avenue almost as fast as it is opened. K & X Construction Services LLC meets that weather head-on in Shelton with plowing, walkway clearing, shoveling and ice treatment, working the downtown grid and the streets that climb out of it. Storms that arrive in waves have to be answered in waves, which means going back rather than calling it done. The good moment is the last pass, when the pavement finally stays dark behind the blade. Shelton's older blocks sit close together, and clearing one well means knowing exactly where the snow can go.