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'k 1 <br /> i lil li <br /> Project No 58080-06-02 <br /> May 5, 1995 <br /> ' TPHg vapor concentrations ranged from 35,000 to 43,000 mg/m3 while extracting from VW-1 and <br /> 18,000 to 70,000 mg/m' while extracting from VW-6 Benzene was not detected in any of the <br /> ' isainples collected with the exception of sample A-1209-TNF6, which was collected after the flowrate <br /> from VW-6 was increased to the maximum achievable Benzene was detected at a concentration <br /> ' of 170 mg/m3 after the extraction flowrate from VW-6 was increased from 29 to 67 scfm <br /> 1 <br /> 1 <br /> i <br /> -20- <br />