Health impact catalytic converters

Risk-benefit analyses" and "public health impact estimates" were the basis of "draft reports" released by the EPA in January 1975 (40, 41) (after they had been unofficially "leaked"). These "issue papers", which either included no references (41) or made references primarily to internal EPA memos, studiously overlooked completely the EPA s own clinical studies on the health effects on animals of exhaust from non-catalyst and from catalyst-equipped engines, which had been reported to the scientific public (42) and at the EPA S3nnposium on "Impact of Mobile Emission Controls" in April of 1974 (43). Those studies indicated no adverse effects on animals exposed to 1 10 diluted catalytic converter-treated exhaust during a period (1 week) which produced mortality rates of greater than 70% in infant rats exposed to similarly diluted non-catalyst-treated exhaust. 

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