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Site Safety Plan: Subsurface Investigation and Safety Plan Page 4 <br /> Remedial Excavation of Hydrocarbon-affected Soil <br /> Proposed Cintra Park Phase II Development, Tract 2705, Tracy, California <br /> 3.3.2 Heat Stress. If protective wear is required, workers will be provided beverages, <br /> shaded rest areas, and breaks to circum ent problems with heat stress. <br /> 3.3.3 Physical Hazards. Walk-through safety inspections of the work area will be <br /> conducted daily before the start of work and as conditions change. The results of <br /> these surveys will be communicated to the work crews during regularly scheduled <br /> "tailgate safety" meetings. The safety I rocedures and the day's planned operations <br /> will be discussed at these sessions. <br /> 4.0 ENVIRONMENTAL CONTROLS <br /> 4.1 Flammable Atmosphere <br /> If combustible gas indicator readings anywhere on the site are greater than 10%LEL, work will be <br /> suspended, monitoring will continue as necessary to is late the area of concern, and some or all of <br /> the following environmental controls will be carried out as appropriate. <br /> 4.1.1 Contaminated soils. Contaminated sol s will be sprayed down (if necessary) with <br /> water or deodorizing chemicals to reduce vaporization of VOCs or permeation of <br /> other gases. <br /> 4.1.2 Petroleum product vapors. Vapors from pooled petroleum product will be <br /> suppressed(if necessary)by spraying wi h foam or appropriate chemical suppressant <br /> or covering with soil. <br /> 4.1.3 Stockpiled soil. Portions of the stockpiled soil will be covered with plastic or <br /> visqueen sheeting. <br /> 4.1.4 Air movers. Air movers will be used toventilate the areas or concentration to below <br /> 10% LEL. <br /> 4.1.5 Wells. Wells emitting excessive concentrations will be capped, or shut-in as <br /> necessary. <br /> 4.2 Toxic Atmosphere <br /> If airborne concentrations of the chemicals of concern exceed the TLV for the chemical, the above <br /> environmental control measures will be carried out to reduce concentrations to below the TLV, if <br /> practical. If such reduction is not possible, personal protective equipment will be used to limit <br /> worker exposure during operations. If airborne concentrations of the above-mentioned chemicals <br /> W'.1PRDlECTSU 023051ENRP01.WPD <br />