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I Mr. Robert McClellon <br />September 22, 2004 <br />Page 8 of 11 <br />POTENTIAL CHEMICAL HAZARDS <br />Heave Metals <br />Burn ash sample analysis obtained from previous waste characterization investigations from <br />other sites indicate that non -hazardous household or municipal waste contains various heavy <br />metals. Test results indicate the predominant metals of concern in burn ash are not readily <br />soluble in water; therefore, not readily leachable into ground water. However, burn ash can pose <br />a risk if it becomes airborne and is inhaled, ingested, or in direct contact with the skin. Site <br />workers will utilize dust control measures to minimize airborne dust. <br />Landfill Gas Constituents <br />Landfill gas is generated as a result of the waste breakdown at a landfill. Methane is the major <br />component of gas generated during biodegradation of solid waste buried in landfills. It is an <br />odorless and colorless gas. It does not chemically react with the body, but may cause <br />asphyxiation by displacing the oxygen in the air. Methane monitoring conducted by CIWMB <br />staff and their consultants did not detect appreciable methane gas. Staff workers will continue to <br />use appropriate precautions when excavating and trenching landfill areas, however. <br />Unidentified Drums <br />Unidentified drums may be present on-site. If drums are uncovered during an excavation, the <br />area shall be cordoned off and the CIWMB and EHD officer will be notified. The area shall be <br />flagged and excluded from the work zone until the drum can be better characterized. At no time <br />shall any site personnel attempt to remove/handle any such item. <br />If any suspicious odors or other materials are identified by site workers, the suspect debris and/or <br />source will be cordoned off and Ground Zero will be contacted to conduct air monitoring or other <br />identification as appropriate. <br />PHYSICAL HAZARDS <br />There are numerous potential physical hazards associated with this project which, if not <br />identified and addressed, could present operational problems as well as accidents and personal <br />injury to the work force. In order to minimize physical hazards, standard safety protocols have <br />been developed and will be followed at all times. Mr. Palomino will observe the general work <br />practices of all personnel and enforce safe procedures to minimize physical hazards. <br />Tripping, Slipping, and Falling Hazards <br />Site personnel will be reminded daily to maintain sure footing on all surfaces. In order to <br />minimize tripping hazards caused by debris, job supplies, and equipment, material will be <br />removed daily from the work areas and stockpiled in their respective storage areas, if feasible. <br />G:\G ROUNDZE\Palomino\wp_sitemittinal.doc <br />