The phrase "adding that the commissioners" is correct and usable in written English.
It can be used when you want to include additional information or clarification provided by the commissioners in a statement or report.
Example: "The report concluded with several recommendations, adding that the commissioners would review the findings in detail."
Alternatives: "noting that the commissioners" or "stating that the commissioners".
He added that the commissioners hope the public and city officials who appointed them trust them enough to know that they read all documents in every case and make decisions based on what they've read.
"At no time have the commissioners invested directly in Wonga or in other payday lenders," the commissioners' statement said, adding that the indirect exposure was "considerably less than 0.01% of the value of Wonga".
"Illegal guns continue to plague us," the commissioner said, adding that the shooting of the teenager, Kimani Gray, occurred after Mr. Gray pointed a loaded.38-caliber revolver at the officers.
The students have waited too long," said the commissioner, John B. King Jr., adding that the new plan would "help improve teaching and learning and give New York City students a much better opportunity to graduate from high school with the knowledge and skills they need to succeed in college and their careers".
"That was certainly one of the rough spots," said Mark H. Topping, a deputy buildings commissioner, adding that the system is now running smoothly.
"It's a work in progress," said Nicholas Scoppetta, the city's child welfare commissioner, adding that the methodology would be refined and expanded next year.
"Most of the northern parks were bought or improved with federal or state money," said Joe Stout, the county parks commissioner, adding that the open-door policy was a condition of accepting the money.
"What kind of luxury will we have if we have this monster-sized bathroom?" The concrete stilts are designed to protect the building from future storms, said Kevin Jeffrey, the Brooklyn parks commissioner, adding that the site of the destroyed building was the best location for the restroom in terms of spacing and access.
Adrian Benepe, the Manhattan parks commissioner, added: "That's the most heartwarming part of the whole thing.
