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r-77 r.,= r--7 L,..__-,., ■,_r: r7-77 l —"'T 1.,-.=4 <br /> 10.0 CONSTITUENTS OF POTENTIAL CONCERN AND MAXIMUM CONCENTRATIONS IDENTIFIED ONSITE <br /> Listed below are the maximum concentrations of contaminants in the air and/or groundwater that have been encountered at the site to date. <br /> Sample <br /> Substance Date of Sample Media Concentration <br /> 1,2-Dichloroethane(Ethylene Dichloride, DCE) 12/20/2006 Groundwater 19.5 pgIL <br /> TPH-g 12/20/2006 Groundwater 65 pgIL <br /> TPH-d 12/20/2006 Groundwater 66 pg/L <br /> TPH-g 2/20/2007 Vapor 900 ppmv <br /> Benzene 2/20/2007 Vapor 1.5 ppmv <br /> 4 <br /> F , ' <br /> STANTEC Consulting Corporation <br /> 10-1 <br /> R <br />