Riverkeeper cleanup of Dutchman's Landing Park on the fourth annual Riverkeeper Sweep, a day of service for the Hudson River. All Sweep volunteers are asked to wear sturdy shoes or boots, clothing that can get dirty and to bring a hat, sunscreen, a reusable water bottle and snacks. This site is not recommended for elementary-aged children. Information at sweep@riverkeeper.org or jkhunka@1x.netcom.com.