The Hood River County Commission will conduct a first reading on Tuesday of a proposed change to commission district boundaries that would see the Cascade Locks area move from District 1 with the Westside area to District 4 with the Upper Valley.  Commissioners are in the midst of the boundary revisions done every ten years using updated census information, but have struggled with how to best balance the population size of each district and allow for growth over the next ten years.  Commission Chair Mike Oates says after looking at a number of possible configurations, this seemed to be the best for population balance.  A public hearing will be held on the subject in February.