The first in a series of community meetings on the BPA’s I-5 Corridor Reinforcement Project is set for this afternoon and evening in Castle Rock. The Bonneville Power Administration is exploring possible routes for a new 500-kilovolt transmission line, looking at a route between Castle Rock and Troutdale, with a large substation at the northern end of the route. After an initial series of public input sessions, BPA officials say that they’ve made some adjustments, now looking at three sites for the substation, and refining the proposed route for the line itself. Several segments have been removed from consideration, moving the line further away from populated areas and difficult terrain. Still, some questions remain; the Cowlitz County Commissioners are asking for a formal response as to why a route called the “Pearl Option” isn’t being considered, saying that this route would do more to serve the southwest Washington area than the other routes under consideration. Today’s meeting runs from 4 to 7 pm at Castle Rock Elementary School. That will be followed by a meeting tomorrow at Skyview High School in Vancouver, on September 8th in Amboy, and on September 12th at Union High School. More information is also available on the BPA website.