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used on the tank or piping at any time. Any source of ignition shall be at least 50 feet <br />away from the excavation site. <br />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 />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 />.-001111 <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 />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 />11/07/2005 revision 5 17 <br />