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y • Heat cramps are caused by heavy sweating with inadequate electrolyte replacement. Signs and symptoms include: muscle spasms, heavy sweating, dizziness, nausea and fainting. • Heat exhaustion occurs from increased stress on various body organs including inadequate blood circulation due to cardi vascular insufficiency or dehydration. Signs and symptoms include: pale, cool, moist skin; heavy sweating; dizziness; nausea and fainting. • Heat stroke is the most serious form of h at stress. Temperature regulation fails and the body temperature rises to critical levels. Immediate action must be taken to cool the body before serious injury and death occurs. Competent medical help must be obtained. Signs and symptoms are: red, hot, unusually dry skin; lack of or reduced perspiration; nausea; dizziness and confusion; strong, rapid pulse and coma. 4.3.1 Heat Stress Monitoring All personnel working for Clearwater at the job site shall be monitored for heat stress. Because workers at the job site are expected to be wearing permeable. clothing (e.g. standard cotton or synthetic work clothes), m nitoring for heat stress will consist of personnel constantly observing each other or any of the heat stress symptoms discussed above. The Site Safety Officer shall mandate work slowdowns as needed. 4.4 Fire Hazards: The potential for fire or explosion exists whenever flammable liquids or vapors are present above lower explosions limit (LEL) concentrations and sufficient oxygen is present to support combustion. These potential fire hazards are addressed below: o The potential exists for petroleum hydrocarbon vapors to exceed LEL concentrations within the wells. Howev r, well-gas generally does not contain sufficient oxygen to support combustion. o In addition to the above, an operative fire extinguisher will be provided by Clearwater or Clearwater's subcontractc r at the site. All personnel shall be familiar with its location and use. 4.5 Electrical Hazards: No electrical enclosures will be opened unless power is disconnected. Power will be verified disconnected with a meter prior to working on any circuits. 5.0 PERSONAL PROTECrIVE EQUIPMENT Level D personal protection equipment is ex ected to be the highest protective level required .to complete the field activities for this project. Modified Level C protection may also be required at the discretion of the Site Safety Officer. The following lists summarize the personal protective equipment that shall be available to allfield personnel working in the work area: 4 1/18/95