At three in the morning a nor'easter owns Portland: Congress Street empty, the Observatory lost in the blow, the side streets of Munjoy Hill filling in faster than anyone can keep up with. Hodge's Snow & Ice Management LLC is out in that, plowing lots and driveways, stacking snow where it will not block a sightline, and getting entries and walks shoveled before the first shift arrives. Ice is the real adversary on these hills, so treatment goes down on the steep pitches and the shaded brick where a midday thaw refreezes by dawn. Storms come off the water heavy and wet here, and the plan changes with every inch that falls. By the time the city plows have finished the main streets, the private ground is open, treated and ready for the day.