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RECORD NUMBER: 278 OF 376

OLS Field Name OLS Field Data
Main Title Quantitative risk and exposure assessment for carbon monoxide : Amended.
CORP Author Environmental Protection Agency, Research Triangle Park, NC. Office of Air Quality Planning and Standards.
Publisher U.S. Environmental Protection Agency, Office of Air Quality Planning and Standards, Health and Environmental Impacts Division,
Year Published 2010
Report Number EPA/452/R-10/009; PB2010-114173
Stock Number PB2010-114173
OCLC Number 670512419
Subjects Carbon monoxide--Environmental aspects. ; Air quality management--United States. ; Air quality--Standards--United States.
Additional Subjects Carbon monoxide ; Quantitative risk ; Exposure assessment ; Ambient air quality standards ; Air pollution standards ; Air quality ; Health effects
Internet Access
Description Access URL
http://nepis.epa.gov/Exe/ZyPDF.cgi?Dockey=P1007V96.PDF
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
EKBD  EPA-452/R-10-009 Research Triangle Park Library/RTP, NC 10/27/2010
NTIS  PB2010-114173 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 01/21/2011
Collation 1 v. (various pagings) : col. maps, charts (some col.), 28 cm.
Abstract
This amended Quantitative Risk and Exposure Assessment for Carbon Monoxide (CO REA) contains revised results reflecting corrections to one of the input variables used in the dose model to generate estimates of carboxyhemoglobin (COHb). Modeling results presented in the May 2010 CO REA were generated with erroneous values for altitude for both the Los Angeles and Denver study areas. This error has been corrected and the model simulations repeated resulting in increases to the COHb estimates in both study areas. These increases, in terms of the ambient contribution to COHb levels, were small for the Denver study area and negligible for the Los Angeles study area, with somewhat larger increases to the total COHb estimates. Because altitude was not used in calculating exposure estimates, none of the exposure results previously presented were affected by this error. The sections of the REA revised to reflect the corrected dose estimates include several tables and associated text in chapters 5, 6, 7 and 8 and Appendix B. The specific areas of the report containing revisions to address this error include section 5.10.4 (Table 5-27), section 6.2 (Tables 6-15 through 6-23, Figures 6-5 and 6-6), section 6.3 (Tables 6-24 and 6-25), section 7.2.1.2 (Table 7-4), section 7.2.2 (Tables 7-5 through 7-8, 7-10, 7-11, and 7-14), chapter 8 and Appendix B.6 (Tables B-4 through B-6, Figures B-2 through B-5). In addition, the presentation of exposure estimates has been modified to reflect a correction to the rounding convention for percentages of the population less than 0.1%. Previously, values between 0.05 and 0.09% were rounded upwards to 0.1%. This correction is reflected in the presentation of exposure estimates in Tables 6-4, 6-7, 6-10, 6-13, and 6-14.
Notes
EPA project officer: Deirdre Murphy. Updating EPA-452/R-10-006. July 2010. Final report. Includes bibliographical references. "EPA452/R-10-009." PB2010-114173