 That's Anthony Smith, an arborist and union steward who spent the holiday weekend at parks across the city, picketing from 10 a.m. to 6 p.m. each day. The board estimates about 40 percent of the more than 300 unionized park workers didn't show up to work on the 4th. But Smith says the impact will be more clear once the holiday weekend passes. A lot of people had vacation with the 4th, so we'll probably have a better estimate once we see who comes back to work.