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of C O N T R A C T O R S BALCH PETROLEUM & BUILDERS, INC. C.L. #396575 A&C - 10 HAZ ft • If personnel are required to enter the excavation, walls must be sloped or shored. Work areas must be barricaded to protect the public and removal personnel. Removal crew must wear personal protective gear and have a fire extinguisher and first aid supplies on hand. • Employees shall not work in excavations where there is accumulated water unless adequate precautions have been taken to protect employees. • Daily inspections of excavations, the adjacent areas, and protective systems shall be made by a competent person for evidence of a situation that could result in a possible cave in, indications of failure of protective systems, hazardous atmospheres, or other hazardous conditions. An inspection shall also be made after every rainstorm or other hazard increasing occurrence. • Where the competent person finds evidence of a situation that could result in possible cave in, indications of failure of protective systems, hazardous atmospheres, or other hazardous conditions, exposed employees shall be removed from the hazardous area until the necessary precautions have been taken to insure their safety. • All personnel working on the job site must wear safety gear. Hard hats, safety glasses, ear plugs, work boots, and gloves. Ladders and a safety harness should also be on site. C.) Potential Health and Safety Hazards: Fire: All sources of ignitions will be removed from the tank vicinity while vapor freeing the tank. Explosion: Gastech meter will be on site to measure the lower explosion limit of vapors in the tank to be removed. Physical: No one is allowed to enter a trench or tank excavation deeper than five feet. - Watch out for heavy equipment. - Contact with dry ice may cause burns. Chemical: The primary route of entry for aromatic hydrocarbons is through the lungs. Inhalation of aromatic hydrocarbons causes Central Nervous System depression and can lead to other effects such as damage to the liver, kidneys, and bone marrow. Vapors can also be absorbed through the skin. Prolonged exposure to the vapors can cause defatting of the skin and dermatitis.