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LEAD INDUSTRIES ASSOCIATION, INC. * MAOItON a v k n u i NCW YOAK* N. t. 10017 - AMA Oftftft It> mi i mm *V 26, 1965 Lsad in Air j i | Vs have nov had on opportunity to review is tort detail tha Public Health Service Publication Ho. 999-AP-l2 entitled "Survey of Lead Is the Ataoejhere of Three Urban Coczrunltles*. Ae seotlooed Is our previous announcement to you, dated April 20, this i report cover* oat at the aoet Intensive air pollution atudlea ever conducted anywhere. Data freo this study effectively corroborate earlier Hndlnga that the aaount of lead Is the ataospbere la very lov, aad aa auch doe* not constitute a public health problea In air pollution. The findings confirm and add to those of the Satlooal Air Sampling Vetvork, revealing no Increase In the concen tration of lead in the atsoephere Is these three cities Is the lsat five years. In fact, data Indicate that Is Cincinnati the trend has bees downward sines 19**6. Recognizing that envlronaental data alone have Halted validity as far as public health Is concerned, the Investigators Included s human taspllng prograa In the study. The results of these biological samplings show that there baa been no algoIf leant accumulation of lead In the huoan body. Blood and urine ipeclaens analyzed for lead were collected from groups of the population who have high, but non-occupational, exposure to lead. These groups Included traffic control police, letter carriers and long distance coaruters via freeways, all of whoa had been involved Is these - sctlvltles st the sane location at least five years. Mess blood lead values for these groups, expressed In ecg. %, (nlcrograas ' of lead per 100 grass of thole blood) ranged froa a low of 13 la Philadelphia to a high of 31 la Cincinnati. Accepted blood lead noraal values for occupationally exposed individuals are froa bO to 60. In a Halted study of persons with chronic diseases, nou effect of these disease* on the blood lead level could be deson. strated. The range of neon blood lead value* for the chronically 111 suffering frea respiratory, liver, blood and bone conditions was froa a high of 2b to a low of lb ncg. I \*VV JUW.-. wiy gj u u l j mw b i a iy of tbe U. 8. Public Health Servlet In Houston, Hay 7, at the Annual Heating of the Aaerlcan Industrial Hygiene Association, and vlll b reprinted In an early latue of tbe Journal of the Aaerlcan Induatrlal Hygiene Association. Because of the Importance and tinelinen of this report, vt art taxing thla naans to present to you soot of tbe factual data contained therein. Ho public distribution of the report has yet beta aede. /J 1 Dan C. fowler I>lrector of Health and Safety F s w I ajMawaMWjp.euM.wtf j