For example, the 550 MWe boiler at Kansas City Power &amp; Light Company's Hawthorne Generating Station required rebuild and NOX, SO2, and PM simultaneous control retrofits.
The Hawthorne Generating Station required several simultaneous refits.
As this letter makes clear, as Comptroller General of the United States, I have broad discretion to conduct audits, investigations, and examinations of executive branch activities either at the request of Congress or on my own authority.