Appraisal of air pollution in Tennessee : report of a cooperative survey by the U.S. Public Health Service and the State of Tennessee Dept. of Public Health, December 1956-July 1957 / Paul A. Kenline, senior assistant sanitary engineer.

  • United States. Public Health Service.
Date:
1957
Catalogue details

Licence: Public Domain Mark

Credit: Appraisal of air pollution in Tennessee : report of a cooperative survey by the U.S. Public Health Service and the State of Tennessee Dept. of Public Health, December 1956-July 1957 / Paul A. Kenline, senior assistant sanitary engineer. Source: Wellcome Collection.

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    DEFINITION OF THE REGIONS the examination of air pollution problems and the State 1s divided corresponding gener- ow purpose of a detailed potential problems, into five regions, ally to the topographic provinces dis- cussed previously. These régions are shown in Figure 10, AIR POLLUTION IN REGION | Topographically, this area may be visualized as a broad plain character- rolling surface. ‘There’ are not the high mountains, deep valleys, Walkd.e3 and other topographic features which tend toretard the disper- ized by a howls, sion of pollutants. The prevailing winds are southerly throughout most of the and the average annual hourly wind speed is ahout 10 m.p.h. Calms average ahout 20 percent. Average annual pre- cipitation is about 50 inches, and days few, around six per While the possibility of cli- matic conditions leading to atmospheric Stagnation cannot he ruled out, year, of heavy fog are 1 6 year. it would appear that the comhined topographic- climatic conditions are generally favor- able to the dispersion of pollutants. Of a total population ip thi sees gion of approximately one million (est. 1955), 53 percent live in Shelby County (includes Memphis). This is also the industrial center of the area, account- ing for two-thirds of the manufacturing employees. Three counties (Shelhy, Gib- son, and Madison) in this 2l-county area have over 80 percent of all manufactur- ing employment. Leading industries are lumber, and wood products, food products, textile, apparel, furniture, machinery and chemicals. Primary fuel used in the urban areas of this region is natural gas. Use of coal limited. 1s correspondingly Consideration of the combination of favorable topographic-climatic con- ditions, the limited use of coal, and the type and location of industry in this area leads to the general expecta- tion that air pollution problems will be of a localized type and not of a general community-wide nature. PIREICW@P (© TATION (M.P.H JANUARY FEBRUARY MARCH APRIL MAY JUNE Rs AUGUST SEP TEMBER OCTOBER NGVEMBER DECEMBER —DNAWAONWHOADND OOO oO~woa wo —N —-N MHoOAWHORDhDWDANA!A ote oo ) 44 1:94904054002° PREVAILING WIND DIRECTION PERCENT POSS BEE SUNSHINE HEAVY FOG (DAYS) NNUMMNHHNNHNWW me Sen NS eo OMNNATAUIINDTDNWwUW ——~ 6 © 8 © © 8 8 me ee ee