| Abstract |
The work reported was undertaken to provide the EPA with a user-oriented data base containing recent county-based information, for all counties in the contiguous United States, on population demographics, population mobility, climatology, emissions, air quality, and age-adjusted death rates. The completed data base, called 'POPATRISK,' contains approximately 27.5 million characters and is in SYSTEM 2000, Version 2.80 format, facilitating access with minimal user computer training. Population demographics are as of the 1970 Census; population mobility is described spanning the years 1965 to 1970 for 6 sex-race categories in 7 age groupings for both 'in' and 'out' migrants climatology information contains county summaries of temperature, precipitation and hours of sunshine; county point and area source emission estimates are provided for 5 criteria pollutants--TSP, SO2, NO2, CO, and Ozone--based on the NEDS-USER file; air quality information is based on 1974 data contained in SAROAD; age-adjusted death rates were computed for the combined years 1969, 1970, and 1971 for 4 sex-race categories in 50 groupings of ICDA categories (8th revision). |
