At dusk the Brigantine Bridge holds the last of the light, and the Marina District glows over the back bay in good weather and bad. Sean Patrick Services LLC works the whole calendar underneath it: mowing, trimming and cleanups while the ground is green, then plowing, shoveling and salt when a storm shuts the shore down. The two halves ask for different things, patience in July, speed at four in the morning in February. What links them is one standard, a property that looks handled, a drive that is genuinely clear, edges you can follow with your eye. Atlantic City, Brigantine and Absecon are the ground covered.