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Table <br />INTEGRATED SURFACE WALK VOLATILE ORGANIC COMPOUND AND METHANE DATA <br />Sample <br />Number <br />Sample <br />Date <br />Sample <br />Time <br />VC <br />BENZ <br />Volatile <br />EDB <br />Organic <br />DCA <br />Compound <br />MECL <br />PCE <br />Concentration <br />CCL4 <br />TCA <br />(ppb) <br />TCE <br />CHCL3 <br />OVA <br />Reading <br />(ppm) <br />Methane <br />SW -1 <br />2/24/88 <br />10:53 to 11:18 <br />ND <br />0.4 <br />ND <br />ND <br />ND <br />ND <br />ND <br />0.2 <br />ND <br />ND <br />3 <br />SW -2 <br />2/24/88 <br />14:18 to 14:43 <br />ND <br />0.5 <br />ND <br />ND <br />ND <br />ND <br />ND <br />0.3 <br />ND <br />NO <br />23 <br />Regulatory <br />2 <br />2 <br />0.5 <br />0.2 <br />1 <br />0.2 <br />0.2 <br />0.5 <br />0.6 <br />0.8 <br />NA <br />Detection Limit <br />Laboratory <br />0.2 <br />0.09 <br />0.06 <br />0.1 <br />1.0 <br />0.1 <br />0.07 <br />0.08 <br />0.09 <br />0.09 <br />NA <br />Detection Limit <br />Abbreviations: <br />VC <br />= vinyl chloride <br />BENZ <br />= benzene <br />EDB <br />= ethylene dibromide <br />DCA <br />= 1,2-dichloroethane <br />MECL <br />= methylene chloride <br />ND <br />= not detected <br />ppb <br />= parts per billion <br />PCE <br />= tetrachloroethylene <br />CCL4 <br />= carbon tetrachloride <br />TCA <br />= 1,1,1 -trichloroethane <br />TCE <br />= trichloroethylene <br />CHCL3 <br />= chloroform <br />NA <br />= not applicable <br />ppm <br />= parts per million <br />PJ9 9390405.000 2-8 Rev. 0 09/0788 <br />