As others have pointed out, the article contains almost no details about the waste. Here are the details directly from the government meeting: https://documents.dps.ny.gov/public/Common/ViewDoc.aspx?DocR...

Full details of the meeting (including video and transcript): https://dps.ny.gov/event/indian-point-decommissioning-oversi...

Edit: I have no context as to know if the proposal is good or bad, environmentally or morally, but the slideshow is for public consumption so it's pretty readable (not that it'll give you that context).