The Fourth of July celebration in Bolinas went relatively smoothly, thanks to its dedicated organizers and a groundswell of volunteers. Around 5,000 people came to town on the holiday, though 2,000 of those headed straight to the Palomarin trailhead. The fire department responded to seven emergency calls: a man who rolled his A.T.V., a woman who was short of breath, a miscommunication, a car in a ditch, an intoxicated person and a man with a…