The request also comes amid intensifying scrutiny of Perrotta, the former Secret Service agent at the epicenter of most decisions to boost spending on security at the EPA, including around-the-clock bodyguards for Pruitt and biometric locks in his office.
The GAO-which is the federal government's independent watchdog-also found that the EPA allocated the funds in a way that violated a second federal law, the Antideficiency Act.
The EPA did not immediately respond to request for comment; the organization had said that the phone booth should not be included as part of office decorations, a claim the GAO rebutted in its report.
House Oversight Chairman Trey Gowdy, a South Carolina Republican, said he's troubled by recent reports of EPA chief Scott Pruitt's unprecedented spending on his personal security and luxury travel. Thus, the booth was a practical addition to the administrator's office and did not violate the specific appropriations law provision since it was not "an aesthetic improvement" contemplated by that measure, according to the agency.
Gowdy is also seeking documents from the EPA on the changes past year to round-the-clock security protection for Pruitt, contracts to sweep Pruitt's office for electronic surveillance, his trips to Italy and Morocco, and travel by Pruitt's security chief.
"EPA is addressing GAO's concern, with regard to Congressional notification about this expense, and will be sending Congress the necessary information this week", said Liz Bowman, an EPA spokeswoman.
Pruitt's continued leadership of the environmental agency has been under fire since the revelation two weeks ago that he lived in a bargain-priced Capitol Hill condo tied to a fossil fuels lobbyist. Last week, Democratic lawmakers asked him to provide documents about ethics issues they said were revealed to them by a former agency official, including spending on bulletproof vests, guns and a contract with an Italian security service.
The auditors said EPA clearly spent in excess of $5,000 and the space in question was certainly a part of Pruitt's office.
"It is critical that EPA and all federal agencies comply with notification requirements to Congress before spending tax payer dollars", Senator John Barrasso, a Republican, said in a statement. "EPA must give a full public accounting of this expenditure and explain why the agency thinks it was complying with the law".