Policy assessment for the reconsideration of the National Ambient Air Quality Standards for particulate matter, external review draft.
| Other author | United States. Environmental Protection Agency. Health and Environmental Impacts Division, issuing body. |
| Format | Electronic |
| Publication | Research Triangle Park, NC : U.S. Environmental Protection Agency, Office of Air Quality Planning and Standards, Health and Environmental Impacts Division, 2021. |
| Description | 1 online resource (649 pages in various pagings) : color illustrations, color maps |
| Supplemental Content | https://purl.fdlp.gov/GPO/gpo172798 |
| Subjects |
| General note | "October 2021." |
| General note | "EPA-452/P-21-001." |
| General note | GPO Cataloging Record Distribution Program (CRDP). |
| Bibliography note | Includes bibliographical references. |
| Source of description | Online resource; title from PDF (EPA, viewed Dec. 13, 2021). |
| Technical rpt number | EPA-452/P-21-001 |
| GPO item number | 0483-E-22 (online) |
| Govt. docs number | EP 4.52:P 25/9/DRAFT |