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` Site Health and Safety Plan <br />Petroleum Related UST Removal <br />STORAGEE. DESCRIPTION OF BASIC WORK TASKS ASSOCIATED WITH UNDERGROUND <br />ePROJECTS. <br />Job tasks are identified as follows: <br />1. Identify, locate, and mark utilities and verify tank location. <br />This task involves locating all utilities prior to operation to minimize service interruptions. Utilities may include <br />water, natural or propane gas, sewer, electric, and phone lines. Site should be marked with white paint. Institute <br />lockout / tagout procedures if necessary. <br />2. Site Setup. <br />This task involves the setup for site operations which includes setup of equipment and containers, staging of <br />heavy equipment, and the establishment of work zones. <br />3. Tank inspection and initial testing. <br />This task involves the identification of the tank lines which include the fill, feed and vent lines. Initial tank testing is <br />performed to determine if product or waste requires removal. Oxygen concentration and lower explosion limit <br />(LEL) in the tank head space is evaluated. <br />NOTE: Please follow local regulatory agency guidelines for 02 and LEL limits prior to removal. <br />4. Excavation / surface removal to expose tank. <br />This task requires the use of heavy and light equipment in order to remove asphalt, concrete, metal, and soil, to <br />expose the top of the tank. Examples of heavy equipment includes excavators, loaders, backhoe, tractor -trailers. <br />light equipment includes concrete cutting, picks, shovels, air compressors, jackhammers, etc. <br />5. Product / waste removal from tank. <br />In certain conditions, UST still contains product / waste or water combinations. These liquids and sludge must be <br />removed prior to removing the tank. Equipment such as hand, double diaphragm, peristaltic, other motorized <br />pumps may be used as appropriate to remove tank contents. All equipment should be grounded. <br />6. Tank Cleaning. <br />Some tanks require cleaning to aid in removing scale, sludge, and sediment from inside the tank. Tank cleaning <br />can also aid in reducing organic vapors thus reducing the LEL. <br />Equipment such as water hoses, and pressure washers may be used to accomplish this task. Materials may <br />include petroleum, organic polar, or aqueous solvents for decontamination. <br />Inert tank atmosphere. <br />Should organic vapors and / or oxygen levels inside the tank be above the local agency's level for removal, dry ice <br />(solid carbon dioxide) is generally placed into the tank in order to displace volatile organic vapors and oxygen <br />concentrations. Testing to verify acceptable levels is <br />required prior to tank removal. <br />8. Rigging for tank removal. <br />This task involves the attachment of straps or cables to the tank for the purpose of lifting the tank out of the <br />ground. <br />K <br />