SUPPLEMENTARY INFORMATION:

This is a proposed extension of the ICR, which is currently approved through November 30, 2024. An agency may not conduct or sponsor and a person is not required to respond to a collection of information unless it displays a currently valid OMB control number.

Public comments were previously requested via the Federal Register on May 18, 2023 during a 60-day comment period (88 FR 31748). This notice allows for an additional 30 days for public comments. Supporting documents, which explain in detail the information that the EPA will be collecting, are available in the public docket for this ICR. The docket can be viewed online at www.regulations.gov or in person at the EPA Docket Center, WJC West, Room 3334, 1301 Constitution Ave. NW, Washington, DC. The telephone number for the Docket Center is 202-566-1744. For additional information about EPA's public docket, visit https://www.epa.gov/​dockets.

Abstract: The National Emission Standards for Hazardous Air Pollutants (NESHAP) for the regulations published at 40 CFR part 63, subpart GG were proposed on June 6, 1994; promulgated on September 1, 1995; and amended on ( printed page 93581) both December 7, 2015 and August 3, 2016. These regulations apply to existing and new aerospace manufacturing and rework facilities where the total hazardous air pollutants (HAP) emitted are greater than or equal to 10 tons per year of any combination of HAP, or where the total HAP emitted are greater than or equal to 25 tons per year of any combination of HAP. New facilities include those that commenced construction or reconstruction after the date of proposal. Operations covered include: cleaning, primer and top coat application, depainting, chemical milling maskant application, handling and storage of waste, and specialty coating operations. This information is being collected to assure compliance with 40 CFR part 63, subpart GG.

In general, all NESHAP standards require initial notifications, performance tests, and periodic reports by the owners/operators of the affected facilities. They are also required to maintain records of the occurrence and duration of any startup, shutdown, or malfunction in the operation of an affected facility or any period during which the monitoring system is inoperative. These notifications, reports, and records are essential in determining compliance, and are required of all affected facilities subject to NESHAP.

Form Numbers: None.

Respondents/affected entities: Aerospace manufacturing and rework facilities.

Respondent's obligation to respond: Mandatory (40 CFR part 63, subpart GG).

Estimated number of respondents: 144 (total).

Frequency of response: Initially, semiannually, annually.

Total estimated burden: 154,000 total hours (per year). Burden is defined at 5 CFR 1320.3(b).

Total estimated cost: $16,800,000 (per year), includes $224,000 annualized capital or operation & maintenance costs.

Changes in the Estimates: There is no significant change in burden from the most recently approved ICR as currently identified in the OMB Inventory of Approved Burdens. This is due to two considerations. First, the regulations have not changed over the past three years and are not anticipated to change over the next three years. Second, the growth rate for this industry is very low or non-existent, so there is no significant change in the overall burden. There is an increase in capital and operation & maintenance costs due to an adjustment to increase from 2007 to 2022 $ using the CEPCI Equipment Cost Index.