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J • <br /> Jeff Van Slooten <br /> Page 7 <br /> November 29 , 1989 <br /> IV. Conclusions <br /> The documents provided need substantial revisions before the <br /> actual risk to the environment and to the public health can <br /> be determined. The potential health impacts have been <br /> underestimated in this document since PCP was not considered <br /> as a carcinogen, chromium (inhalation) was not considered as <br /> a carcinogen, PCDDs and PCDFs were not included in <br /> evaluation of risk and multiple routes of exposure have not <br /> been considered. If you have any questions or comments, <br /> please feel free to contact us (916-323-6557 , Parker or <br /> 916-324-9613 , Becker. ) <br /> Judith A. Parker, Ph. D. , DABT <br /> Staff Toxicologist <br /> Toxicology and Risk <br /> Assessment Unit <br /> Technical Services <br /> Richard A. Becker, Ph.D. <br /> Staff Toxicologist <br /> Toxicology and Risk <br /> Assessment Unit <br /> Technical Services <br /> Attachments: TRAU Scientific Guidance 89-2 (Non-dect) and <br /> TRAU Scientific Guidance 89-3 (PCP) <br /> cc: See next page. <br />