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' TABLE 5-1 <br /> Potential Petroleum Contaminants and Exposure Limits <br /> ' Compound OSHA-PEL TLV-TWA TLV-STEL REL ppm Odor threshold Odor Characteristic <br /> PPM PPM Ppm values,ppm <br /> Benzene 1 10 5 0.1 3.9 aromatic,sweet <br /> ' (Ca) <br /> PXTY1111-. - <br /> 100 too 150 100# 39 sweet,pungent <br /> 100 100 150 1009 190 aromatic,sweet <br /> PEL OSHA Personnel Exposure Limit. <br /> TLV ACGIH Threshold Limit Values. <br /> ' TWA Time Weighted Average. <br /> STEL Short Term Exposure Limit. <br /> REL NIOSH Recommended Exposure Limit. <br /> Ca Suspected carcinogen, 1988-89 ACGIH TLV. <br /> # 60 minute ceiling, 10 hour TWA,200 ppm 10 minute ceiling. <br /> 1 <br /> 1 <br /> 1 <br /> 1 <br /> sh <br /> ' `� <br /> CONDOR <br />