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1 <br /> Personnel working on the site may also be exposed to diesel and gasoline exhaust both from <br /> the trucks and machinery in use during project activities and from local traffic As the area is <br /> outside and therefore well ventilated, exhaust levels should not reach concentrations capable <br /> of causing any adverse health effects Symptoms of exposure to high levels of exhaust <br />' include nausea, headache, dm mess, coughing andirritation of the eyes and upper respiratory <br /> system <br />' <br /> Liquid samples will be preserved with hydrochloric acid <br /> to maintain their integrity until they <br /> can be analyzed. Addition of the sample to the preservative can result in the release of <br /> corrosive mists, or may result in splashing Inhalation of corrosive mists or contact with <br />' hydrochloric acid can result in tissue damage similar to a burn <br /> Methanol and hexane may be used during decontamination of sampling equipment Inhaling <br /> high concentrations of methanol vapor may result in symptoms resembling intoxication, and <br /> can cause damage to the kidneys and central nervous system Methanol may also be absorbed <br /> through the skin with similar toxic effects Contact with liquid methanol may also result in <br /> skin untation The effects of hexane are similar to those of the VOCs discussed above <br /> Grouting materials continuing small amounts of soca may be required during field activities <br />' Prolonged exposure to respirable silica dust can result in unpaired pulmonary function, and <br /> may result in cancer High dust levels may also be generated during excavation activities, <br /> potentially increasing both the levels of aubome contaminants and the extent of <br />' contamination <br />' Activities required during the project may result in some slight exposure of site workers and <br /> visitors to substances that have been determined by the State of California to cause cancer, <br />' both defects or other reproductive harm. The State of California's Safe Dnnking Water and <br /> Toxic Enforcement Act of 1986 (Proposition 65) requires notification to all persons who may <br />' be exposed to such chemicals These substances are described in Tables 1 and 2 of this <br /> HASP <br />' MZ(11-29-94/RHS/HASP/94-0037 7AF 3_2 <br />