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AL1. , SAFEW 2007 <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 />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 />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 />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 />utilizing a design approved by a professional engineer. No job —built devices or equipment are <br />allowed. <br />12.1 Fall arrest systems shall include: <br />11/07/2005 revision 5 17 <br />