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s i i Obtain the required permits and notify all regulatory agencies. Locate all utility, gas and water lines. CALL USA or local utility locator. Ensure that all trained employees are briefed on current conditions, understand their role in the work plan, and review the MSDS on tank contents. Have knowledge and understanding of contents of the tank. Secure the area; fence, post warning signs around the site, control pedestrians&traffic. Ban smoking. Control static electricity. Disconnect all electrical and internal combustion equipment not required to remain. Shut down all open flame and spark producing devices within the vapor hazard area. Hot days with no breeze should be treated with added caution as vapors may not dispurse. Tank should be approached from the sides as explosions typically release their energy through the ends of the tank. Tank Preparation If a significant amount of product remains in the tank remove product prior to commencing with tank preparation. Any existing product, residues and rinsates will be removed from the tank and either hauled to waste by vacuum truck or temporarily stored on-site in an approved tank(stored until a significant amount of liquid, residue and rinsate is accumulated, then hauled by vacuum truck to an owner approved certified disposal facility). The material will be manifested by both the transporter and the disposal facility. A copy of the manifest will be submitted to the regulatory agencies. Excavate to the top of the tank and expose product lines. During all excavations monitor the excavated material for signs of contamination (odor, staining, ect.) . If excavated material is suspected of being contaminated the material shall be kept separate from clean material. The suspected material shall be stockpiled on a impervious barrier unless the material is being loaded into trucks for immediate removal. I