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JOB HAZARD ANALYSIS: <br /> Hazards likely to be encountered on-site include those commonly <br /> encountered when operating any mechanical equipment, such as the <br /> danger of falling objects or moving machinery. Simple precautions <br /> will reduce or eliminate risks associated with ,operating such <br /> equipment . All precautions will be taken to assure a smooth flow <br /> of traffic in and out of the location. A crane company has been <br /> employed to operate all lifting equipment. Qualified personnel <br /> onlv will have any contact with this equipment. All on-site <br /> personnel are required to wear hard hats when in close proximity <br /> to lifting equipment. Latex sampling gloves will be worn by <br /> persons collecting or handling samples to prevent exposure to <br /> contaminants. Gloves will be changed between samples, and used <br /> ones discarded, to avoid cross contamination. Proper respiratory <br /> equipment will be worn if vapor contamination levels on-site exceed <br /> action levels as determined using P. I . D. . Furthermore , no on-site <br /> smoking, open flame, or sparks will be permitted to prevent <br /> accidental ignition. <br /> RISK ASSESSMENT SUMMARY: <br /> Exposure to chemicals anticipated on-site include volatile <br /> aromatics such as benzene, toluene , xylene , and ethylbenzene. <br /> These chemicals represent a hazard because they are moderately to <br /> extremely toxic and highly flammable . Threshold Limit Values <br /> (TLV' s ) , Short Term Exposure Limits (STEL' s ) , and Toxicity Levels <br /> i (LD 50, oral-rat ) , all in mk/kg (ppm) are listed below, <br /> Compound TLV STEL Toxicity <br /> Benzene 10 25 4894 <br /> Toluene 100 150 5000 <br /> Xylene 100 150 4300 <br /> Ethylbenzene 100 150 4300 <br /> Benzene is considered an extreme cancer hazard. applicable MEDS <br /> forms are attached. <br /> EXPOSURE MONITORING PLAN: <br /> A Photo-Ionization Detector ( PID) will be used to monitor vapor <br /> concentrations around the site . Should concentrations exceed <br /> TLV' s, protective measures will be taken. Passive dosimeter badges <br /> will be placed in downwind locations if PID readings indicate high <br /> levels of volatile organics in the breathing space . <br /> PERSONAL PROTECTIVE EQUIPMENT: <br /> All personnel on-site will have access to respirators with organic <br /> vapor cartridges. Replacement cartridges will be available on-site <br /> as needed . When handling samples, the on-site geologist will wear <br /> l <br />