The Dalles City Council accepted an updated 20-year transportation systems plan at their Monday night meeting.  Adoption did not come without significant discussion around roundabouts proposed by the Oregon Department of Transportation, and an extension of 19th Street in the plan.  Councilors decided the document could be amended over time, even though Mayor Steve Lawrence was concerned about how it will be interpreted in the future.  In other business, the Council authorized entering into a cost recovery agreement with the U.S. Forest Service for environmental studies to support permitting of the Dog River Pipeline Replacement Project.  Lawrence says he still hopes construction can begin next year.