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• The water runoff around the decontamination area will be controlled to avoid the <br />accumulation of mud, minimizing the potential for lost traction and slipping. <br />3.4.2.4 Excavation Hazards <br />No excavation greater than four (4) feet will be entered by IT personnel. The excavation will <br />be barricaded at all times and warning signs posted. <br />3.4.2.5 Biological Hazards <br />No biological hazards are anticipated during tank removal operations. <br />3.4.2.6 Chemical Hazards <br />Chemicals encountered during these activities represent a wide array of individual species, <br />some of which are anticipated to be present in trace amounts. Material Safety Data Sheets <br />(MSDS) of all chemicals used shall be provided by IT before work begins and will be <br />available in the work areas on-site at all times. <br />All chemicals, including fuel, will be secured after hours and over weekends by IT personnel. <br />All personnel working with chemicals will be required to wear, at a minimum, chemical <br />resistant gloves and boots and a splash guard on their hardhat. A portable eyewash station <br />will be maintained on-site when chemicals are used. <br />Though individual chemicals may vary in their physical properties, they share three common <br />exposure pathways: inhalation, skin absorption, and ingestion. Ingestion will be prevented by <br />emphasizing the importance of proper personal hygiene during tailgate safety meetings. The <br />presence of food or smoking materials within the work area will be strictly prohibited, and <br />the HSO will occasionally audit breaktime activities to ensure that safe personal hygiene <br />practices are being followed. <br />Absorption of chemicals through the skin will be minimized by the use of protective clothing <br />as described in Section 3.7. Should inadvertent skin contact with chemicals occur, the <br />affected employee will be removed from the work area for decontamination. <br />MZ/07-07-92/EES/ENG/2054r 3-5 <br />