I understand that the problems at Hanford have complex causes with long history. But what the former governor seems to be concerned about is a lack of transparency from DOE, which is an issue that people in the Northwest have been fighting for years (hence the lack of trust).
Listen, I understand that some level of contamination is unavoidable. But they've got liquid nuclear waste leaking out of tanks into the soil at the banks of the Columbia River, and they can't just keep telling us that they're "working on it". I'm sorry that they did such a terrible job planning for future needs, and I get that part of the reason for that is because they were doing completely new work, but another part of it was a wanton disregard for the environmental and human consequences of building their nuclear arsenal. There was plenty of money to build the bombs, but today it seems to have dried up: DOE budgets something like $3 billion per year for cleanup, but actually gets about $2 billion. I realize that's not all DOE's fault, but this is the reality. The federal government made an enormous, toxic mess in Eastern Washington and now they're dragging their feet when it comes time to clean it up.
But again, the issue in this article is a lack of trust. The DOE may be completely sincere in their cleanup efforts, but if they won't communicate about it, and we have to pry details out of them with FOIA requests, then there is no reason for the states to believe in that sincerity. This is, after all, the organization that turned 586 square miles of Washington State into the most heavily contaminated nuclear waste dump in the country. Why should the people of Washington believe that this organization has their best interests in mind?
[Also, one note: though many shipments of waste to Hanford have been stopped before they occurred, there are at least 2 shipments of nuclear waste that were delivered there from a DOE facility in California. The amount transferred is obviously dwarfed by the scale of waste products generated on site, but there is great fear that DOE just wants to ship all of this mess to Hanford and then leave it there indefinitely--likely in "temporary" storage facilities that are a continuation of the same irresponsible policies that created this problem in the first place.]