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Project No.4-419-0381 August 29,2019 Page No.26 6.0 MONITORING PROCEDURES The monitoring procedures are divided into a medical monitoring program and a field personnel monitoring program.Medical monitoring verifies an employee's ability to work in potentially hazardous environments. Field personnel monitoring evaluates the specific hazards present during site work activities. 6.1 Medical Monitoring Program Excavation and grading supervision, soil sampling, and stockpile management and disposal work is expected to involve active physical work and potential exposure to petroleum hydrocarbons and other chemicals, climatic stress, noise, and physical safety hazards. The work will require people of reasonable health with normal vision and hearing acuity. The companies involved with this project will be asked to provide documentation of employee medical fitness to perform the required work, (e.g., susceptibility to heat stress, normality of liver, kidney, and heart function, etc.) evidenced by a signed document from the examining physician dated no later than one year before project start up. This documentation should also indicate the employee's ability to perform the required work while wearing an air purifying respirator. 6.2 Field Personnel Monitoring Program Exposure of personnel to combustible gas, organic vapors, and acidic or caustic contaminants will be monitored intermittently to ensure that personnel exposures do not exceed acceptable limits and that the appropriate selection of protective equipment is made. The following safety instruments may be used in the field: • Photoionization detector(PID) The SALEM field team member(s)will be knowledgeable in the operation of the instrument.A manual on the operation of each instrument will be available to field team personnel, if requested. Work area monitoring will rely upon direct reading instruments to measure and monitor employee airborne exposures. The PID used for this project will be the MiniRae Photoionization Detector equipped with a 10.0 eV lamp.Field personnel monitoring will be conducted using one PID per work zone.Each instrument will be calibrated at the beginning of each day with 100 parts per million hexane calibration gas. The instrument will be used to measure hydrocarbon vapor concentrations at breathing zone locations within the work zone.Areas downwind of the work zone will also be monitored,if necessary,to ensure that organic vapor emissions do not impact off-site areas. The PID measurements will identify conditions for respirator use and site evacuation.These conditions are described in Chapter III under the sections entitled"Fire/Explosion Hazards" and"Chemical Hazards." 7.0 RECORD KEEPING The following documents and records will be maintained in the SALEM project files: • A copy of this plan; • Documentation of employee's medical ability to perform work and wear respirators; • Health and safety training certification forms; • Respiratory training certification; • Field notes and field data pertaining to enforcement of health and safety practices; and • Accident and illness reports. 161 SALEM engineering group. inc. 9 9 9 P