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lb J� <br /> GENESIS ENGINEERING& REDEVELOPMENT <br /> compromise safe operating procedures at any time. If any field staff are unclear about any aspect <br /> of their job, they should immediately discuss issues with their supervisor. Project personnel and <br /> subcontractors are responsible for reporting any unsafe condition, accident, or near miss to the <br /> Field Team Leader. <br /> 3.0 HAZARD ASSESSMENT AND CONTROL MEASURES <br /> 3.1 Human Exposure Pathways <br /> Impacted soil at the Site is the primary media of concern for personnel exposure during <br /> implementation of field activities. The potential exposure pathways for constituents of concern <br /> include dermal contact, incidental ingestion, and inhalation of vapors during the field activities. <br /> The overall potential for inhalation of dust or vapors is expected to be relatively low,because <br /> most of the Site area is paved. Dermal contact and incidental ingestion pathways will be <br /> minimized through a vigilant personal hygiene program and the use of respiratory and Personal <br /> Protective Equipment("PPE")when thresholds are exceeded. Air monitoring in the breathing <br /> zone will be performed to confirm that ambient VOC concentrations are below prescribed action <br /> levels (Section 4.0). Field personnel are required to control exposure primarily through the use <br /> of safe work practices and PPE. <br /> 3.2 Chemical Hazards <br /> The primary constituents of concern that are anticipated to be in the soils at the Site include: <br /> • Petroleum Hydrocarbons (gasoline, fuel oil) <br /> • Lead <br /> • Mercury <br /> • Hexavalent Chromium <br /> Attachment D-2 includes the Material Safety Data Sheets ("MSDS") for gasoline, fuel oil; lead, <br /> mercury, and Hexavalent Chromium. All personnel are required to review the MSDS and ensure <br /> that they understand all the information presented in them; all MSDSs are based on essentially <br /> 100%pure chemical, thus, if the MSDS information is adhered to, the project personnel will <br /> receive the highest level of protection from adverse health affects. <br /> The Permissible Exposure Limits ("PEL") are defined as the time-weighted average <br /> concentrations for a nominal eight-hour work day and a 40-hour work week, to which nearly all <br /> workers may be repeatedly exposed without adverse effect(Title 8 CCR 5155). The <br /> Immediately Dangerous to Life and Health("IDLH") criteria are defined as the maximum level <br /> Health and Safety Plan 4 of 16 <br /> DePaoli Property <br /> November 14,2007 <br />