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Ferrous iron will be measured in groundwater samples with a ferrous iron HACH kit before and after <br /> treatment to asses the changes in dissolved iron concentrations as a result of treatment and to <br /> estimate the extent of precipitation anticipated by treatment. The pH, oxygen- reduction potential <br /> (ORP), and conductivity will be measured before and after treatment using an Orion ISE meter. <br /> Soil Oxvaenloxidant Demand Testina : <br /> Soil oxygen/oxidant demand testing will be conducted using potassium permanganate, because it is <br /> the most accurate method of measuring soil oxidant demand. The test will be conducted according <br /> to the attached procedure. <br /> 1:1BP-ARCO\04 BP Valley PortfoliokBP Valley Sites\21301Work Plan12130 workplan 2-07.doc <br />