The contractor shall provide debris removal services for an obstruction in the Quillayute River Federal channel, Washington. The scope of work is for services to remove and dispose of a tree submerged... The contractor shall provide debris removal services for an obstruction in the Quillayute River Federal channel, Washington. The scope of work is for services to remove and dispose of a tree submerged in the Quillayute River channel. The services provided under this contract are presented in detail in Part 5-Specific Tasks. See attached for further details.