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A properly calibrated flammable/combustible gas and oxygen analyzer is required on <br /> the job site prior to excavation or removal. Calibration of the meter must be within the <br /> last three months. <br /> All electrical lines, piping, and like items known to be associated with the tank shall be <br /> isolated or disconnected. <br /> If at anytime during the excavation, the lower explosive limit of the atmosphere around <br /> the tank exceeds 25 percent, all work will cease and proper mitigation procedures <br /> initiated. <br /> 9.3.4 CONFINED SPACE <br /> DO NOT ENTER TANK SUMP (S) FOR ANY REASON. Appropriate control <br /> measures, such as fencing and confined space supervision, must be <br /> employed prior to any worker entering into the tanks sumps. <br /> All tank sumps are considered permit required confined spaces until they are <br /> removed, and after the new sumps are installed and the concrete tank slab <br /> has been poured. Monitoring and all other confined space procedures must <br /> be followed when entering the sumps. THERE ARE NO EXCEPTIONS <br /> 10.0 SOIL REMOVAL, DISPOSAL AND SAMPLING <br /> Any and all soil removal and disposal is the sole responsibility of the client, and all soil samples <br /> will be analyzed per clients' requirements. <br /> 11. Lock-out / Tag-out procedures (Energy Isolation) <br /> Lock-out procedures must be followed during the cleaning, servicing, or adjusting of <br /> machinery or electrical equipment. LOTO procedures shall be implemented as required <br /> by applicable Federal, State, or Property Owner rules and regulations. <br /> 12. FALL PREVENTION <br /> 100% fall protection shall be employed for all work at heights. Fall protection shall <br /> include scaffolds, aerial lifts, and personnel hoists. Also guardrails, toe boards, and other <br /> primary systems may be implemented. In addition, provisions for secondary fall protection <br /> (full-body harness and fall arrest systems) shall be used for employees working or traveling <br /> more than six (6) feet above a lower level and are exposed to an imminent fall hazard (this <br /> includes working conditions hat present hazards such as leading edge, open holes, and <br /> skylights on building rooftops and/or other elevated towers/structures). All fall protection <br /> devices used shall be manufactured in accordance with an acceptable recognized standard <br /> 11/07/2005 revision 5 17 <br />