Laserfiche WebLink
1 2 . 5. 4 Arsenic, depending on the concentration level, is a <br /> 2 poison and a human carcinogen. Arsenic poisoning may be acute <br /> 3 ` or chronic. Acute arsenic poisoning usually results from <br /> i <br /> 41 <br /> ingestion of arsenic compounds and chronic poisoning results <br /> 5i from either ingestion or inhalation. The oral TDLO (Toxic D--se, I <br /> 6II Low) is the lowest dose of a substance introduced by any roue, <br /> 7 other than inhalation, over any given period of time and <br /> 8 reported to produce any toxic effect in humans or to produce <br /> 9 carcinogenic, neoplastigenic, or teratogenic effects in animals <br /> 10 or humans. A TDLO(mouse) of 120 milligrams per kilogram has <br /> 11 been established. The federal drinking water standard for <br /> 12 arsenic is 0. 05 mg/1 : The proposed MCLG is also 0 . 05 mg/1 . <br /> 13 2 . 5. 5 Copper may be toxic in higher exposures. In particular, <br /> 14 acute exposure to copper dust or fumes may result in metal fume <br /> 15 fever and, at least for occupational exposures, may lead to <br /> 16 increased risk of toxic effects due to copper retention in the <br /> 17 body for persons with Wilson's disease. Other potential acute <br /> 18 effects include skin and eye irritation, gastrointestinal system <br /> 19 or respiratory distress, and anemia. chronic exposures may <br /> 20 result in ulceration of the nasal septum. The human TDLO for <br /> 21 copper is 120 microgram of copper per kilogram of body weight. <br /> 22 A federal secondary maximum contaminant level for copper in <br /> i <br /> 23drinking water is 1 mg/1. However, a 1. 3 mg/1Maximum <br /> 24 <br /> Contaminant Level Goal has been proposed by the U. S. EPA for <br /> 25 drinking water. <br /> 26 <br /> 27 <br /> -7- <br /> 4:0URT PAPER <br /> nwrs ,1CALI"NNIA <br /> STV. 11wtv. - xi <br /> a6 34700 <br />