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PLANNED ONSITE ACTIVITIES <br /> Drill soil borings <br /> Install groundwater monitoring well <br /> POTENTIAL PHYSICAL HAZARDS <br /> Potential hazards Actions to reduce hazards <br /> Drilling equipment Wear hardhats, steel-toed boots. <br /> Utilities USA will be noted. <br /> Traffic Watch for traffic, use appropriate traffic <br /> controls, if necessary (cones, fluorescent <br /> vests,warning signs). <br /> POTENTIAL CHEMICAL HAZARD <br /> constituent Boiling matirx PEL's Actions for Protection <br /> Point <br /> Petroleum Soil 300 ppm NMe gloves,level D respirator <br /> protection available <br /> Benzene 176 Sal NIOSH 0.1 ppm 104iour TWA Nitrile gloves,level D respirator <br /> 1 ppm 15-min STEL protection available <br /> OSHA 1 ppm 8-hour TWA <br /> 5 ppm 15-min STEL <br /> Toluene 232 Soil NIOSH/OSHA Nitrile gloves,level D respirator <br /> 100 ppm 10-hour TWA protection available <br /> 150 ppm 15-min STEL <br /> Ethyl 277 Soil NIOSH/OSHA Nitrile gloves,level D respirator <br /> Benzene 100 ppm 10-hour TWA protection available <br /> 125 ppm 15-min STEL <br /> Xylenes 269-292 Sal NIOSH/OSHA Nitrile gloves,level D respirator <br /> 100 ppm 10-hour TWA protection available <br /> 1502M15-min STEL =j <br /> Use benzene as target compound for air monitoring. Action level= 1/2 PEL. Don half-face <br /> respirators(10x protection factor)if>1 ppm detected on PID(lowest detection of PID). Can <br /> use differentiating quatitative monitoring (Draeger, Gastech) to determine percentage of <br /> benzene being read by PID. Back out of work environment if PID reading multiplied by <br /> benzene percentage exceeds 1 ppm. Re-evaluate alternate protection. <br /> HAZARDOUS MATERIALS HANDLING PROCEDURES <br /> All soil cuttings will be stored on-site with existing stockpile. Stockpile to be fenced and <br /> covered. <br />