Extracted from the 2017 4th quarter Executive Summary of the Allen Steam Station:
An update to the 2016 human health and ecological risk assessment was conducted. There is no evidence of unacceptable risk to humans and wildlife at Allen attributed to CCR constituent migration in groundwater from the ash basins. The only evidence of potential unacceptable human related risks estimated in the 2016 risk assessment was under the hypothetical subsistence fisherman scenario due to concentrations of cobalt in fish tissue. This risk assessment update supports that the fisher risks were overestimated based on conservative exposure (it is unlikely subsistence fishermen exist in the area) and modeled fish tissue uptake assumptions (modeled concentrations likely exceed actual fish tissue concentrations if measured), supporting a risk classification of “Low” based upon groundwater related considerations.
This is not research, it's rhetoric, carefully crafted to leave the reader confident there's nothing to worry about. The "cobalt in fish" thing is simply a red herring, if you'll pardon my use of a salt water species to drive home a point. If they reported they'd found nothing at all, people wouldn't believe them. So we get cobalt in fish, that nobody's going to eat anyway. Just an aside: Cobalt concentrations detected in at least three common species have been proven to reduce appetite, subsequently stunting growth in the fish affected. The truth is, there are several other toxins even worse than cobalt leaking from the Allen plant: