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found in the contaminated soil in the work area Additionally, it is not anticipated that workers will be exposed to any other significant VOCs, however, monitoring for the VOC's found as very minor constituents in the subsurface, will be performed These workers also may be exposed to airborne dust that may contain some hazardous materials To protect these workers from skin contact and breathing vapors and dust, they may be required to use Level C protection as described in the Personal Protective Equipment section of this plan Work will be initiated in Level D after screening ambient background concentrations with a dust meter and Photoionization detector (PID) 6.1 Hazard Assessment Exposure limit data are expressed as time weighted averages *(TWA) or ceiling limits TWAs promulgated in OSHA regulations are referred to as permissible exposure limits (PELs) TWAs found in NIOSH publications are recommended exposure limits (RELs) The American Conference of Governmental and Industrial Hygienists (ACGIH) adopts values for exposure limits referred to as threshold limit values (TLVs) ACGIH further divides TLVs into TWAs, ceiling limits, and short-term exposure limits (STELs) The exposure limits for the chemicals found in the work area, that the workers may come in contact, are given in Table 1 SThe exposure routes, exposure limits, symptoms from exposure, and the concentrations that are immediately dangerous to life and health (IDLH) for chemicals, which may occur in the work area, are listed in Table 1 Activities at the site will be conducted in open, non-confined areas and will not require air monitoring for oxygen and combustible gas levels The potential for injuries inherent in operating heavy equipment represents another hazard, especially because operators may be wearing restrictive clothing The use of heavy equipment creates the potential for contact with overhead electric lines and underground utility lines Underground utility lines will be located and avoided Underground Service Alert (USA) will be contacted at least two working days prior to the initiation or work activities Additionally, the minimum safe distances from overhead utility lines, as specified in 8CCR2946 will be followed If an accident occurs, the nearest medical assistance will be sought as specified in the section entitled Contingency Plan and Emergency Procedures 6.2 Contaminant/Waste Characteristics: Avalon Environmental Consultants 9627-001-2 Kashmar Singh Joes Truck Stop October 20, 1998 7 Lathrop, California