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1 <br /> 1 <br /> background on a organic vapor meter (OVM) The OVM is a field portable photo <br /> ionization detector that uses a 10 0 eV lamp to detect compounds with ionization <br /> potential below 10 0 eV (hydrocarbon range). <br /> i The soil borings will be closed as follows after the last soil sample has been collected <br /> the augers removed from the boring and 25 pounds of bentonite will be poured into the <br /> boring and hydrated with clean tap water. The remaining borehole will be closed by <br /> ipounng a neat cement grout through the annulus up to grade <br /> 1 <br /> i <br /> 1 <br /> 1 <br /> I <br /> I <br /> I <br /> I <br /> I <br /> I <br /> i <br /> I <br />