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i <br /> SECTION 4 <br /> HAZARD EVALUATION <br /> f <br /> The potential hazards to personnel worldng at this site have been identified,as chemical and <br /> physical. Each potential hazard relative 'to the potential for exposure is described below. <br /> 4.1 Chemical Contamination <br /> Table 4-1 presents general information on the potential chemicals of concern at the site. The <br /> information includes exposure limits and.recommendations, routes of exposure, typical signs <br /> s and symptoms of exposure and ionization potentials. The:personnel protection measures for <br /> specific field activities at the site will be;based on direct instrument readings which will <br /> screen for petroleum hydrocarbons and aromatic hydrocarbons. <br /> 4.2 'Physical Hazards <br /> 4.2.1 General <br /> Physical hazards associated with this project include working around heavy equipment <br /> (drilling rig), overhead utilities, electrocution, noise, and thermal eztermes. <br /> Noise levels around the soil vapor rig during probe installation and sampling during <br /> operation may exceed a comfortable range in which case ear plugs are recommended. <br /> The use of ear plugs is highly recommended at all`times during soil;vapor field <br /> activities. Hearing_nrotective devices_(HPD5) will'be available on site at all times. <br /> Use of HPDs will be required whenever the noiselevei equals or Lxg�g¢a N SBA <br /> Personnel will be aware of the movement of heavy equipment onsite at all times. <br /> Underground services alert will be contacted prior to commencement intrusive <br /> :activities. If plans are available, they will be reviewed prior to field"activities. <br /> 1 <br /> Hand-augering to approximately 5 feet will be conducted in areas where underground <br /> lines are suspected. <br /> ;i <br /> 4.2.2 Sunburn i <br /> Working outdoors on sunny daysfor extended periods of time can cause sunburn to <br /> the skin. Excessive exposure to sunlight is associated with the development of skin <br /> cancer. Field staff should take precautions to prevent sunburn by using sun-screen <br /> lotion SPF at least 15 and/or wearing hats and long-sleeved garments. <br /> UNICE.SSITY <br /> 6.9.94l4182a00]-00 4-1 <br /> A i <br />