COMPLIANCE INFO_1986-1997 - Laserfiche WebLink

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The potential hazard of concern is methane gas in the soil pores. Although this poses no exposure hazard to worker health, it is considered to be an explosion hazard. Small amounts of methane gas could be released during the installation f the probes, but the amount will be minimal since no large excavations will be made. Also there will not be a movement of methane gas to the installation point since underground pressures are equivalent to above ground pressure. PHYSICAL HAZARDS The following hazards will be present throughout the work described in the work plans for the soil vapor extraction system and tank removal. Soil Vapor Extraction System There will be no special physical hazards of concern because of heavy equipment will be used for this phase of work. Tank Removal Table C-2 lists hazards and how they will be controlled. Table C-2. Physical Hazards Control Hazard Control 1. Heavy equipment/ Eye contact with operator prior to approaching equipment. drilling equipment 2. Open excavations Open excavations will be marked with tape during work hours and blocked with fencing or equipment during the off hours. 3. Uneven or slippery Care will be taken when traversing the site and the site will be walking areas site be kept as clean as possible. Sunburn. Working outdoors on sunny days for extended periods of time can cause sunburn to the skin. Excessive exposure to sunlight is associated with the development of skin cancer. Field staff should take precautions to prevent sunburn by using sun -screen lotion and/or wearing hats and long-sleeved garment. Heat Stress. The potential for heat stress is a concern when field activities are performed on warm, sunny days, and is accentuated when chemical protective clothing is worn. Heat stress prevention measures and monitoring will be implemented if site temperatures are above 70 degrees Fahrenheit (F). Precautions to prevent heat stress will include work/rest cycles so that rest periods are taken before excessive fatigue occurs, and regular intake of water to replace that lost from sweating. Work/rest cycles will be based on monitoring the heartrate (pulse) of each individual worker. Rest breaks will be long enough to reduce the heart rate (HR) below levels calculated according to the following methods: 1. The worker will initially determine their resting HR prior to starting work activities. 2. At the start of the first rest period the worker will determine their HR> This initial HR should not exceed the individual's age-adjusted maximum HR, which equals [(0.7)(220 - age in years)].