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sbl 6.2.1 Direct Reading Instrumentation As a precautionary measure, on-site worker exposure to airborne contaminants may be ' monitored during intrusive site activities. When pyroytic oil is encountered, a calibrated photoionization detector [PID] with a lamp strength of 10.6 eV] will be used onsite. The PID will not be used to determine changes in respiratory protection, however it will be used as a scanning device, to monitor and document changes in exposure to volatile organic compounds [VOCs]. The meter detects total hydrocarbons in parts per million. Specific chemical compounds are not detected, although some extrapolation of data may occur through familiarity of the instrument as well as expertise in industrial hygiene practices and the appropriate sampling strategy program. ' Note: Real time dust monitoring will not be conducted at the site. Instead the use of samples collected for laboratory analyses will be instituted at the project to ,j determine the migration of particulates. ' 6.2.2 Employee Exposure Assessment ,i SBES developed an air monitoring strategy, which includes the collection of personal i air samples. Prior to collection, and in keeping with good standards of industrial hygiene practice, the laboratory was consulted as to the best sampling methods for detecting the suspected contaminants. The sampling strategy was developed in accordance with the collection criteria outlined in the NIOSH [National Institute of '} Occupational Safety and Health], OSHA [Occupational Safety and Health -} Administration] and EPA [Environmental Protection Agency] Methodologies. This section details the sampling strategy, methodologies and analyses that will be used to -i monitor the following contaminants and document their levels in the exclusion and ;) contamination reduction zones. [Refer to Table 6-1 for details]. The selective monitoring of high-risk workers [i.e., heavy eQuipment operators, laborers, etc. approximating contaminated areas], will be conducted. This approach is based on the rationale that the probability of significant exposure varies directly with distance from the source. If workers closest to the source are not significantly exposed, than all other workers are, presumably, also not significantly exposed and therefore do not reQuire daily monitoring. .' Since occupational exposures are linked closely with active material handling, personal v air sampling should not be necessary until site mitigation has begun. Personal monitoring samples will be collected in the breathing zone (placed on the worker's lapel]. These samples represent the actual inhalation exposure of workers who are not -j wearing respiratory protection and the potential exposure of workers who are wearing .,r respirators. Samples will be collected every day during the Tracy Tire Fire Remediation Project. j Each day samples will be collected for antimony, arsenic, cadmium, chromium lead, Sb Environmental Services,ALC O October,2003 California Integrated Waste Management Board - Site Specific Health and safety Plan Page 39 or 62 Tracy Tire Fire Remediation Project