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\%W. <br />M <br />Mild cases of gasoline ingestion can cause inebriation, vomiting, vertigo, <br />drowsiness, confusion, and fever. Aspiration into the lungs and secondary <br />pneumonia may occur unless prevented. Gasoline can cause hyperemia of the <br />conjunctiva and other eye disturbances. Inhalation of gasoline during bulk <br />handling operations produced no physiological effects. Gasoline is a skin <br />irritant and a possible allergen. Repeated or chronic dermal contact can result <br />in drying of the skin, lesions, and other dermatologic conditions. <br />The permissible Exposure Limit (PEL) for gasoline is 300 ppm and the Short <br />Term Exposure Limit (STEL) is 500 ppm. <br />Appendix A includes chemical descriptions for other chemicals of concern. <br />5.2 Physical Hazards <br />The potential physical hazards at the site during the planned activities stem from heavy <br />machinery use and the hazardous nature of the excavation work The potential physical <br />hazards are listed in Section 5.0 <br />6.0 WORK REQUIREMENTS <br />6.1 Respiratory Protection <br />Field operations will be initiated in Level D. The primary route of potential exposure <br />for chemicals is inhalation. Respirators must be kept available during excavation <br />activities. Respirators will be equipped with NIOSH approved high efficiency <br />particulate / organic vapor combination cartridges (such as North 7600). <br />6.2 Dermal Protection <br />Unless adequate precautions are taken, chemicals may contact the skin or clothing <br />Potential physical contact with chemicals of concern are possible under the following <br />circumstances: <br />Tank excavation <br />Soil sampling <br />6.2.1 Personal Protective Equipment <br />