Newcomers to Greeley learn it in their first spring: the heaviest snow along the Front Range often falls in March, wet and sudden, bending branches that had only just budded. Aleman Sprinklers and Snow Removal LLC is out in it before four in the morning, when the town is one long blue field and the only tracks on the street are its own. Driveways cleared, walks shoveled, ice broken up at the curb line, lots opened so the day can start on time. That first pass — the clean black line opening behind the blade — is the whole reward. Work runs across Greeley and the nearby towns of Evans, Garden City and Milliken.