STOCKTON, Calif. – For a fifth day, state and federal crews were on Stockton’s Smith Canal after an illegal dumper caused an oil spill. “I think they got most of it,” said neighbor Chris Collins who came to the levee to observe the cleanup efforts as one last pickup truck was being loaded with barrels of waste from the canal’s waters.” You can still see that like rainbow-looking sheen on the water, but it’s not the big sludge – creek of sludge – coming down through no more.”