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`+/ N„r/ <br /> r <br /> " Xylenes 100 150 900 No Yes <br /> Ceiling <br /> of 300 <br /> 4-methyl-2- N/A N/A N/A N/A N/A <br /> pentanone <br /> Dimethyl- N/A N/A N/A N/A N/A <br /> methyloxime- <br /> cyclohexene <br /> Benzaldehyde N/A N/A N/A N/A N/A <br /> Notes: <br /> 1. PEL = Permissible Exposure Limit. <br /> 2 . TLV = Threshold Limit Value. <br /> 3 . TWA = Time-Weighted Average. <br /> L 4 . STEL = Short-Term Exposure Limit. <br /> 5. IDLH = Immediately Dangerous to Life and Health. <br /> 6. N/A = Data not available. <br /> 7. Data is taken from the NIOSH Pocket Guide to Chemical <br /> Hazards, 1994 , and the ACGIH Threshold Limit Values, <br /> 1994-1995. <br /> 8 . The PEL or TLV is the lowest of the two values. <br /> The constituents anticipated to be encountered on site are volatile <br /> in nature. As such, the primary potential route of exposure to <br /> site personnel is expected to be through inhalation, although <br /> exposure through direct skin contact and ingestion is also <br /> possible. Absorption through intact skin is a potential route for <br /> those constituents so designated in the table. Symptoms of <br /> "' exposure to high levels of these constituents include irritation of <br /> eyes, nose, throat, and mucous membranes; dermatitis; headaches; <br /> dizziness; central nervous system depression; narcosis; nausea; and <br /> �.• vomiting. <br /> Exposure through the inhalation route will be controlled through <br /> the use of air monitoring equipment, with upgrades in respiratory <br /> protection based on monitoring results. Dermal exposure will be <br /> controlled by limiting contact through the use of chemical <br /> protective clothing and personal hygiene. Ingestion hazards will <br /> be controlled by strict limitation of eating, drinking, and smoking <br /> in the exclusion areas, and by rigorous application of <br /> decontamination and personal hygiene protocols. None of the <br /> i.. chemicals found on site is listed under California's Safe Drinking <br /> Water and Toxic Enforcement Act of 1986 (Proposition 65) . <br /> -3- <br /> :.r <br /> Environmental Health Consultants <br />