# National Ambient Air Quality Standards for Particulate Matter; Correction
**AGENCY:**
Environmental Protection Agency (EPA).
**ACTION:**
Proposed rule; correction.
**SUMMARY:**
In the Proposed Rules section of today's *Federal Register* , the EPA is proposing to revise the national ambient air quality standards (NAAQS) for particulate matter (PM). This action corrects a typographical error in one table contained in the preamble.
**FOR FURTHER INFORMATION CONTACT:**
Questions concerning the “National Ambient Air Quality Standards for Particulate Matter” proposed rule should be addressed to Ms. Beth Hassett-Sipple, U.S. EPA, Office of Air Quality Planning and Standards, Health and Environmental Impacts Division, (C504-06), Research Triangle Park, NC 27711, telephone number (919) 541-4605, email *[email protected].* Questions related to the Regulatory Impact Analysis for the proposed revisions to the PM NAAQS should be addressed to Ms. Lillian Bradley, U.S. EPA, Office of Office of Air Quality Planning and Standards, Health and Environmental Impacts Division, (C439-02), Research Triangle Park, NC 27711, telephone number (919) 541-5694, email *[email protected].*
**SUPPLEMENTARY INFORMATION:**
In today's *Federal Register* , a proposed rule titled, “National Ambient Air Quality Standards for Particulate Matter,” with the same RIN as this correction (RIN 2060-AO47) was published. This correction corrects a typographical error in section X.A, Table 4 of the preamble. This correction will make a change to the summary of the potential costs and benefits of attaining several alternative PM <sub>2.5</sub> standards as presented in the Regulatory Impact Analysis (RIA). In NAAQS rulemaking, the RIA is done for informational purposes only, and the proposed decisions announced in today's *Federal Register* are not in any way based on consideration of the information or analyses in the RIA. Specifically, the net benefits presented in Table 4 (3% discount rate) for alternative PM <sub>2.5</sub> standard levels of 11/35 μg/m <sup>3</sup> (annual and 24-hour standards) were incorrectly identified as $8,900 to $2300 million in the proposed rule. The correct estimates are $8,900 to $23,000 million. Table 4 is corrected to read as follows:
| Alternate PM
standards (annual/24-hour, in μg/m
) | Total costs | 3% Discount rate | 7% Discount rate | Monetized benefits | 3% Discount rate | 7% Discount rate | Net benefits | 3% Discount rate | 7% Discount rate |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 13/35 | $2.9 | $2.9 | $88 to $220 | $79 to $200 | $85 to $220 | $76 to $200 | | | |
| 12/35 | 69 | 69 | 2,300 to $5,900 | 2,100 to $5,400 | 2,300 to $5,900 | 2,000 to $5,300 | | | |
| 11/35 | 270 | 270 | 9,200 to $23,000 | 8,300 to $21,000 | 8,900 to $23,000 | 8,000 to $21,000 | | | |
| 11/30 | 390 | 390 | 14,000 to $36,000 | 13,000 to $33,000 | 14,000 to $36,000 | 13,000 to $33,000 | | | |
Dated: June 25, 2012.
Gina McCarthy,
Assistant Administrator, Office of Air and Radiation.