REMOVAL_1998 - Laserfiche WebLink

Home Browse Search

high rate, or for prolonged periods at a lower rate, may give rise to a variety of symptoms which include mild anxiety, toxic delirium with hallucinations, delusions, convulsions, and acute toxic psychosis. Physical signs are not prominent; but bradychardia, hypotension, increased reflexes, tremor, and slight weight loss have been reported. When the interval between the termination of exposure and the onset of symptoms is short, an early fatal outcome may result.Exposure to TML may produce insomnia, bad dreams, restlessness, anxiousness; hypotension; nausea; aneroxia, delirium, mania, convulsions; coma. The points of attack for both TEL and TML are the central nervous system, cardiovascular system, kidneys and eyes. The acceptable method for monitoring lead contamination in humans is hair or blood analysis. The permissible level of lead in blood is 70 micrograms/milliliter. The airborne PEL is 0.1 mg/m3, and is determined by air monitoring and analysis by NIOSH Method 7300. Other constituents of gasoline can include but are not limited to benzene, toluene and xylene. Exposure to there compounds can cause nausea, dizziness, visual disturbances, narcosis and collapse. Chronic effects include central nervous system disorders, respiratory tract irritation, tearing, lassitude and immunological disorders. The PEL/TLV (permissible exposure limit, threshold limit value), STEL (short term exposure limit) and IDLH (immediately dangerous to life and health) values are listed below: PEL/TLV STEL IDHL Lead 0.1 mg/m3 Tetraethyllead 0.075 mg/m3 0.3 mg/m3 40 mg/m3 Tetramethyllead 0.07 mg/m3 0.5 mg/m3 40 mg/m3 Benzene 10 ppm 25 ppm 2,000 ppm Toluene 100 ppm 150 ppm 2,000 ppm Ethylbenzene 100 ppm 125 ppm 2,000 ppm Xylene 100 ppm 150 ppm 10,000 ppm 3.3 HEAT STRESS Adverse climatic conditions (both heat and cold) are important considerations in planning and conducting site operations. Ambient temperature effects can include physical discomfort, reduced efficiency, personal injury and increased accident probability. Heat stress is of particular concern due to the prevailing climactic conditions in California. All appropriate procedures regarding heat stress shall be met. Additionally, one or more of the following control measures can be used to help control heat stress: