(Portland, OR)  --  Boaters will have to stay out of Willamette [[ wil-AM-eht ]] Cove through September 5th.  That's the area on the east side of the Willamette River downstream from the Burlington Northern Railroad Bridge in north Portland to North John Avenue.  Crews will be taking water, sediment, and soil samples as they develop a cleanup plan.  That area is part of the Portland Harbor Superfund Site where industries polluted the river for more than a century.