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2.1 Chemical Hazards (REPLACE THIS SECTION) <br /> Personnel involved in field activities may be exposed to petroleum hydrocarbon impacted soil <br /> from a hydraulic oil leak. If additional hazards are later identified on the site, the additional <br /> health hazard summary information shall be included with this plan as an addendum. <br /> Petroleum hydrocarbons have been detected at the site in the diesel and hydraulic oil range (C12 <br /> to C32). This class of compounds causes irritation of the upper respiratory tract and can cause <br /> nervous system effects ranging from dizziness and headache to coma and respiratory arrest if <br /> inhaled in large quantities. Ingestion causes throat, lung, and stomach irritation. Skin exposure <br /> causes a burning sensation. <br /> Pentachlorophenol and creosote may be detected in the railroad ties. They were used as a wood <br /> preservative. Pentachlorophenol causes irritation to the eyes, nose, throat, and can cause nervous <br /> system effects ranging from dizziness and headache to nausea. It is highly toxic by ingestion, <br /> inhalation, and skin absorption. Creosote vapors cause moderate irritation of nose and throat. <br /> Liquid creosote causes sever burns of eyes and reddening and itching of skin. Prolonged contact <br /> with skin can cause burns. Ingestion can cause salivation, vomiting, respiratory difficulties, <br /> headache, hypothermia, and mild convulsions. <br /> Compound PEL STEL <br /> Total petroleum hydrocarbon none none <br /> Pentachlorophenol 0.5 mg/m3 (skin) none <br /> Creosote none none <br /> Respirable Dust 5 mg/m3 none <br /> PEL=permissible exposure limit <br /> STEL=short-term exposure limit <br /> Skin=Compound may be absorbed directly through the skin <br /> Rough&Ready Island 6 Tetra Tech,Inc. <br /> Final Work Plan Addendum December 11, 1998. <br />