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r w spontaneous motor activity and reduced performance connected with disturbances of the motor coordination system; however the severity of these effects does not indicate serious toxic damage, to the CHS. The f study concluded that HTBE "does not even minimally increase the r� neurologic effects with respect to gasoline itself." The level of exposure or the species which were tested were not reported (2293) . t-Rutvt alcohol At high concentrations, c-butyl alcohol causes narcosis in animals and it is expected to cause the same effect in humans. Other than E. slight skin irritation, no effects have been reported from industrial exposure. The oral LD., in the rat is 3500 mg/kg (46) . T Ethanol Ethanol is irritating to the eyes and mucous membranes. It is F also a CNS depressant. The acute toxicity of ethanol is low for both an4miifa and man. Overexposure causes ataxia, incoordination and drowsiness (2,46) . An oral LD., of 14 g/kg was reported for the rat i (47) . --; 1 Methanol f Methanol causes optic neuropathy and metabolic acidosis. Poisoning has occurred primarily from ingestion of adulterated alcoholic beverages. After ingestion there is a latency period of 18 to 48 hours after which exposed individuals develop symptoms of nausea, abdominal pain, headache and shortness of breath. Visual symptoms range from blurred or double vision to changes in color perception, constricted visual fields and complete blindness. Other symptoms of intoxication include dizziness, behavioral disturbances. neuritis and acidosis. The degree of acidosis has been found to parallel the severity of the poisoning. Evidence suggests that exposure to vapor concentrations of 200-375 ppm causes recurrent headaches and visual disturbances are seen at vapor levels of 1200-8300 ppm (2.46) . An oral LD., of 13 g/kg was reported in the rat (47) . Tri-Ortho-cresvi phosphate (TOCP) TOCP affects the spinal cord and peripheral nervous system. Symptoms of acute exposure, including nausea, vomiting. diarrhea and abdominal pain, are followed by a latent period of 3 to 30 days. At -� this time. there is muscle soreness, numbness of fingers. calf muscles and toes which progresses to foot and wrist drop. These effects are manifested after ingestion, inhalation or dermal absorption (54) . An oral LDSo of 1160 mg/kg has been reported in the rat (47) . More information on TOCP can be found in Chapter 49 of the Installation Restoration Program Toxicology Guide. Volume 2. 6/87 L T,