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Whenever possible,stay at least two feet from turning or rotating machinery. This includes augers, cathead, engine power takeoff, and drill rods. Learn where the rig kill switch is to shut the rig off in case of an emergency. A discussion should be held with the driller on each drill rig at the startup of the field work to discuss the location and use of the kill switch and for documentation of a Safety Inspection such as the Monthly Heavy Equipment Safety Inspection Checklist found in Appendix C. 3.4 Noise Hazards and Controls Exposure to high levels of noise may occur when working near drill rigs or other heavy equipment. Also, depending upon where the work is being performed, local equipment(e.g.,airports,factory machines,etc.) may produce high levels of noise. Employees exposed to noise levels in excess of the action level of 85 decibels(A-weighted,Slow Response)will be included into the ATC Policy on Hearing Conservation (Policy No. 34). The SSHO may evaluate employee noise exposures using a Noise Survey Meter or a Noise Dosimeter. The RSC may conduct additional noise monitoring to determine the appropriate response to be taken. Employees will be provided with ear plugs and/or earmuffs when exposed to noise levels in excess of the 8-hour Permissible Exposure Limit(PEL)of 90 decibel(A-weighted,weightehearing n Response). This hearing protection shall have a Noise Reduction Rating(NRR) protect accordance with Policy No.34,including the NRR de-rating factor of[(NRR-7)/21. 3.6 Biological Hazards Site activities on this Site may expose workers to other hazards such as poisonous plants, insects, animals, and indigenous pathogens. Protective clothing and respiratory protection equipment, and being capable of identifying poisonous plants, animals,and insects,can greatly reduce the chances of exposure. Thoroughly washing any exposed body parts, clothing, and equipment will also protect against infections. If working in wooded/grassy areas, use appropriate insect repellants(containing DEET and/or Permethrin)and apply them per the manufacturers' directions. 4.0 -AIR MONITORING AND PERSONAL PROTECTIVE EQUIPMENT 4.1 Site Air Monitoring Requirements To prevent exposure to hazardous conditions and aid in the selection of personal protective equipment, monitoring for the presence of airborne contaminants will occur when knowledge of the Site indicates their potential presence. One or more of the following direct-reading instruments may be used to aid in this determination. Photoionization Detectors(PID)and Flame Ionization Detectors(FID)will measure non- specific organic gases and vapors. Combustible Gas Indicators(CGI)will detect explosive atmospheres. Oxygen(02)meters will detect fluctuations in oxygen concentrations.These instruments should be calibrated or bump tested daily and whenever the readings may be erratic. All readings should be recorded in the field log books. Colorimetric detector tubes supplement PID and/or FID readings to measure specific gases and vapors. Other direct-reading instruments are available for use to monitor for the presence of specific airborne Site contaminants. The breathing zone of the employee(s)anticipated to have the highest potential for exposure for each task will be monitored using an appropriate combination of some or all of these direct-reading instruments. Air monitoring will occur every 15 minutes during non-intrusive activities, or every 5 feet of penetration during intrusive activities. Site tasks and air monitoring requirements are shown in Table 4-1. Additional Site monitoring may occur at the descretion of the SSHO, Site Supervisor, or RSC. 20160613 Stockton,March Ln 2016 HASP 5-6 6/13/16)