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Exposure symptoms are potentially extremely variable. <br />Symptoms may include nausea, headache, abdominal pain, <br />twitching, weakness, slurred speech and vomiting. It is <br />expected that dust control measures, personal protective <br />equipment and employee work practices will adequately control <br />potential exposures to the materials present at the site. <br />4.0 RISK ASSESSMENT SUMMARY <br />The anticipated risks resulting for the potential hazards <br />discussed above depend on the control measures implemented. <br />It is believed that the control procedures established will <br />reduce the overall.risk to acceptable levels for all worker's <br />involved. The primary control measures for the main hazards <br />are indicated below. <br />Chemical Exposure - The contamination levels at the site are <br />the result of the residual materials and not high volumes, or <br />concentrations, which would have been present during <br />production. Waterspray is expected to prevent dust and <br />volatile hydrocarbon generation during excavation operations. <br />Employee work practices and protective clothing are expected <br />to prevent exposures during excavation/decontamination and <br />construction activities. <br />Heat Stress - Employee awareness is the primary control for <br />this hazard. The risks of this hazard will remain for the <br />duration of the project. The project length is relatively <br />short, with the projected time frame of two weeks. <br />Equipment Operation - Only trained, experienced operators <br />will be allowed to use the equipment. <br />Personal protective equipment will be provided for all on <br />site employees. This protection is based on the potential <br />chemical and physical hazards and prior experience. The site <br />Health and Safety Officer will be responsible for determining <br />the appropriate level of protection and may designate <br />alternate levels than those described, where site conditions <br />warrant such action. <br />Employees involved in excavating and decontamination <br />activities will wear Level C protection, which consists of <br />hard hat, full face respirator with combination organic <br />acid/high efficiency dust cartridges with dust prefilters, <br />