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<br /> ' Regardless of actual instrument readings, if all sources of ignition can not be controlled, operations should be immediately
<br /> shut down if readings equal or exceed 10% of LEL and the area evacuated until ignition sources have been eliminated.
<br /> Ignition sources include, but are not limited to: smoking, static electricity, lighting, open Flames, spontaneously ignitable
<br /> substances, frictional heat or sparks, hot surfaces, radiant heat, electrical sparks, stray currents, cutting and welding, and
<br /> ovens,furnaces and heating equipment.
<br /> ' ® Heat and Cold Stress. Overexposure to temperature extremes can represent significant risks to personnel if simple
<br /> precautions are not observed. Typical control measures designed to prevent heat stress include dressing properly,drinking
<br /> plenty of the right Fluids, and establishing an appropriate work/break regimen. Typical control measures designed to prevent
<br /> cold stress also include dressing properly,and establishing an appropriate work/break regimen.
<br /> ' ® Moving Vehicles, Traffic Safety. All vehicular traffic routes which could impact worker safety must be identified and
<br /> communicated. Whenever necessary, barriers or other methods must be established to prevent injury from moving vehicles.
<br /> This is particularly important when field activities are conducted in parking lots,driveways, ramps or roadways
<br /> ' ® Noise. Noise exposure can be affected by many factors including the number and types of noise sources (continuous vs.
<br /> intermittent or impact), and the proximity to noise intensifying structures such walls or building which cause noise to bounce
<br /> back or echo. The single most important factor effecting total noise exposure is distance from the source. The closer one is
<br /> ' to the source the louder the noise. The operation of a drill rig, backhoe or other mechanical equipment can be sources of
<br /> significant noise exposure. In order to reduce the exposure to this noise,personnel working in areas of excessive noise must
<br /> use hearing protectors(ear plugs or ear muffs).
<br /> Ruie-of-Thumb: Wherever actual data from sound level meters or noise dosimeters is unavailable and it is necessary to raise
<br /> one's voice above a normal conversational level to communicate with others within 3 to 5 feet away, hearing protection
<br /> should be worn.
<br /> ® Overhead Utilities and Hazards. Overhead hazards can include low hanging structures which can cause injury due to
<br /> ' bumping into them. Other overhead hazards include falling objects suspended loads, swinging loads and rotating
<br /> equipment. Hardhats must be worn by personnel in areas were these types of physical hazards may be encountered.
<br /> Barriers or other methods must also be used to exclude personnel from these areas were appropriate. Electrical wires are
<br /> another significant overhead hazard. According to OSHA (29 CFR 1926.550), the minimum clearance which must be
<br /> maintained from overhead electrical wires is 10 feetfrom an electrical source rated < 50 W. Sources rated > 50 kV require a
<br /> minimum clearance of 10 feet plus 0.4 inch per kV above 50 W.
<br /> ® Pedestrian Traffic. The uncontrolled presence of pedestrians on a drilling or excavation site can be hazardous to both
<br /> pedestrians and site workers. The site should be surveyed to determine if, when and where pedestrian may gain access.
<br /> This includes walkways, parking lots, gates and doorways. Barriers or caution tape should be used to exclude all pedestrian
<br /> traffic. Exclusion of pedestrian traffic is intended to prevent injury to the pedestrians and eliminate distractions which could
<br /> cause injury to AEI pefsonnel or othersite workers
<br /> ❑ Test Pit and/or other Excavations. All provisions of the OSHA trenching and excavation standard (29 CFR 1926.650-
<br /> 652) must be followed during excavation activities. This includes all test pit excavation and sampling actMNes The
<br /> estimated location of utility installations, such as sewer, telephone, electric, water lines and other underground installations
<br /> ' that may reasonably be expected to be encountered during excavation work, must be determined prior to opening an
<br /> excavation.
<br /> A ladder or similar means of egress must be located in excavations greater than 4 feet in depth so as to require no more than
<br /> ' 25 feet of lateral travel for employees. No person should be allowed to enter an excavation greater than 5 feet in depth
<br /> unless the walls of the excavation have been protected using an approved shield(trench box), an approved shoring system,
<br /> or the walls have been sloped back to an angle of 34 degrees,and the excavation is free of accumulated water. If personnel
<br /> enter an excavation, the spoils pile and all materials must be placed at least 2 feet from the edge of the excavation to
<br /> ' prevent the materials from rolling into the excavation. Personnel must remain at least 2 feet away from the edge of the
<br /> excavation at all times Upon completion of a test pit exploration, the excavation should be backfilled and graded.
<br /> Excavation should never be left open unless absolutely necessary, and then only with proper barricading and controls to
<br /> prevent accidental injury.
<br /> ® Underground Utilities and Hazards. The identification of underground storage tanks (USTs), pipes, utilities and other
<br /> underground hazards is critically important prior to all drilling, excavating and other intrusive activities. In accordance with
<br /> OSHA 29 CFR 1926.650, the estimated location of utility installations, such as sewer, telephone, electnc, water lines and
<br /> other underground installations that may reasonably be expected to be encountered during excavation work, must be
<br /> ' determined prior to opening an excavation. The same requirements apply to drilling operations and the use of soil-gas
<br /> probes. Where public utilities may exist, the utility agencies or operators must be contacted directly or through a utility-
<br /> sponsored service such as Dig-Safe. Where other underground hazards may exist, reasonable attempts must be made to
<br /> AEI Health&Safety,Injury&Illness Prevention Plan
<br /> Mardi 15,2012
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