EHTB Air Representative 20080925 The Countylevel_PM25_Indicators_2006.xls file is the output data file from a SAS program which calculates the air indicators as developed by CDC's Environmental Public Health Tracking (EPHT) Air Team and approved by the Content Working Group (CWG) steering committee. The indicators use EPA air quality data (from ambient air monitors) and the methodology described in the air team's indicator report. The file contains, for each county having complete monitoring data: the year, state FIPS code (individually and combined with county FIPS), county name, county population, county PM2.5 annual avarage, percent of monitored days above benchmark (default: US Federal NAAQS), and the number of person-days above benchmark (default: Federal NAAQS). The data are intended for use in CDC's EPHT portal for displays describing PM2.5-related air quality across the U.S. by county. They are not intended for performing health assessments and otherwise directly relating to health data. 2006 ground condition Complete None planned -77.119905000000003 -76.909395000000004 38.995106999999997 38.791518000000003 ISO 19115 Topic Category environment EPA GIS Keyword Thesaurus Air None United States None As general indicators of air quality over space and time. These indicators are not intended for use in performing health assessments or otherwise being directly linked (related) with health data. Acknowledgement of the EPA would be appreciated. EHTB Air Representative Environmental Health Tracking Branch, CDC EHTB Air Representative mailing and physical address

4770 Buford Highway, Mail Stop F-57

Atlanta GA 30341 United States Of America 7704883670 trackingsupport@cdc.gov 9am-5pm Use email first FIPS Pub 199 No Confidentiality Standard Technical Controls The air quality indicators are created using a window XP Professional operating system environment using SAS version (9.1). The SAS code produces Microsoft Excel files including a worksheet of indicators by county. None The air quality data used in calculating the indicators is tested to ensure that there are 11 samples per quarter and 4 quarters per year for each area's year. If data for a county do not achieve this completeness test, then no estimate is made for the county. Calculate the indicators 20080925 Metadata produced. 20080925 The Countylevel_PM25_Indicators_2006.xls file is the output data file from a SAS program which calculates the air indicators as developed by CDC's Environmental Public Health Tracking (EPHT) Air Team and approved by the Content Working Group (CWG) steering committee. The indicators use EPA air quality data (from ambient air monitors) and the methodology described in the air team's indicator report. The file contains, for each county having complete monitoring data: the year, state FIPS code (individually and combined with county FIPS), county name, county population, county PM2.5 annual avarage, percent of monitored days above benchmark (default: US Federal NAAQS), and the number of person-days above benchmark (default: Federal NAAQS). Air team's report: Air Part I Recommendations to CWG SG EHTB Air Representative Environmental Health Tracking Branch, CDC EHTB Air Representative mailing and physical address

4770 Buford Highway, Mail Stop F-57

Atlanta GA 30341 United States Of America 7704883670 trackingsupport@cdc.gov 9am-5pm Use email first Online Data Although these data have been processed successfully on a computer system at the CDC, no warranty expressed or implied is made regarding the accuracy or utility of the data on any other system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. It is also strongly recommended that careful attention be paid to the contents of the metadata file associated with these data to evaluate data set limitations, restrictions or intended use. The U.S. CDC shall not be held liable for improper or incorrect use of the data described and/or contained herein. 20080925 EHTB Air Representative Environmental Health Tracking Branch, CDC EHTB Air Representative mailing and physical address

4770 Buford Highway, Mail Stop F-57

Atlanta GA 30341 United States Of America 7704883670 trackingsupport@cdc.gov 9am-5pm Use email first FGDC Content Standards for Digital Geospatial Metadata None None