Projects totaling 500 MW in three states that resolved alleged federal permit and stormwater rule violations were built by Swinerton and a spinoff firm, which were not settlement parties but whose enforcement status EPA declined to confirm.
Utility says "first of a kind" utility-scale pilot at Kentucky coal plant could expand to ash impoundments at 20 other sites, pending environmental review and regulator approval.
The Oct. 14 crash on a Philadelphia bridge that killed union workers Victor R. Martins and Donato G. Fiocca remains under probe by the National Transportation Safety Board and other agencies.