Laserfiche WebLink
ito the chemicals found onsite to date are presented below in terms of the <br /> following types of occupational exposure limits.' <br /> LPEL - Permissible Exposure Limit <br /> C - Ceiling <br /> TLV - Threshold Limit Value <br /> TLV-STEL - Short Term Exposure Limit <br /> OSHA Permissible Exposure Limits (PELs) and ACGIH Threshold Limit Values <br /> (TLVs) , time weighted averages (TWAs) are defined'l�as concentrations for an 8-hour <br /> work day, 40-hour work week to which almost all workers can be repeatedly exposed <br /> without suffering adverse health effects. <br /> Short Term Exposure- Limit (STEL) is defined as the concentration to which <br /> workers can be exposed for short timeeriods without irritation tissue <br /> P damage, <br /> or narcosis sufficient to likely cause impairment of self-rescue or precipitate <br /> accidental injury. The STEL is a 15-minute time-w'eight'ed average that should not <br /> be exceeded at any time during the work day. <br /> A ceiling value (c) is a concentration that should not be exceeded at any <br /> time in any work day. <br /> Gasoline <br /> �t PEL/TLV — 300 ppm TLV-STEL s 500 ppm <br /> Gasoline is an eye and throat irritant apt levels around the PEL, and <br /> causes narcotic effects (with symptomsincluding headache, nausea, <br /> dizziness, and blurred vision) at higher levels'. Long term exposure can <br /> effect liver and kidney function. Some studies indicate a potential for <br /> gasoline to be an animal carcinogen, b this has not been fully <br /> established. Because gasoline is a mixture of varying proportions of <br /> dozens of hydrocarbons, a mean odor threshold has not been determined. <br /> Used Motor Oil <br /> Crankcase oil consists of several classes of hydrocarbon including linear <br /> and branched alkanes, cycloalkanes, alkylbenzenes, naphthalenes and <br /> . polycyclic aromatic hydrocarbons RAW . It is likely to be immobile in <br /> soil •and degrade slowly over time through 'weattering and biodegradation <br /> (USAF-IRP, 1990) . <br /> CHEVMERC.H50 11 <br />