Laserfiche WebLink
acid (pH 1, pH 2, and pH 3) and dilute sodium hydroxide (pH 10, 11, 12, and 13) in a 1 1 <br /> soil to liquid ratio and the pH of the aqueous phase monitored over time MW-3 <br /> groundwater was titrated with dilute sulfuric acid (H2SO4) and with dilute sodium <br /> hydroxide (NaOH) Clean site tap water was titrated with dilute sulfuric acid <br /> (Groundwater was titrated to estimate how much residual soil acidity or alkalinity it may <br /> neutralize, while clean site tap water was titrated in order to determine how much acid <br /> would be needed if Fe(U) is used as the reducing agent ) <br />�f <br /> Table L Summary of Analyses. <br /> Analyte Method Laboratory Performing <br /> Analysis <br /> Alkalinity 3101 Alpha Analytical <br /> Ammonia, total SM4500 Alpha Analytical <br /> Arsenic EPA 6020 Alpha Analytical <br /> Chromium, <br /> Hexavalent Hach or 7199 PRMA or Excelchem <br /> Total EPA 6020 Alpha Analytical <br /> Copper EPA 6020 Alpha Analytical <br /> Dissolved Oxygen Probe Alpha Analytical <br /> Iron <br /> Dissolved EPA 6020 Alpha Analytical <br /> Total EPA 6020 Alpha Analytical <br /> Manganese <br />' Dissolved EPA 6020 Alpha Analytical <br /> Total EPA 6020 Alpha Analytical <br /> Methane Air Toxics <br /> Nitrate EPA 300 Alpha Analytical <br /> ORP Probe PRIMA <br /> H Probe PRIMA <br /> Sulfate EPA 300 Alpha Analytical <br /> TOC ASTM Alpha Analytical <br /> D2974/SW9060 <br />' Zinc T6020 Alp"nalytical <br /> 2.3 Estimation of Dose Requirements/Effect on Dowagradient Water Quality <br /> (Except Methane) <br />' Batch tests were conducted to estimate the amount of each reducing agent needed to <br /> decrease the concentration of Cr(VI) In order to determine whether soil affects the <br /> amount of reagent required, tests were performed on MW-3 groundwater only (tests <br /> designated with the prefix "GW") and on groundwater-soil slurries (tests designated with <br /> the prefix "GWS") Two doses of each reducing agent were used In the case of iron, the <br /> PRIMA Environmental 4 Eva[of Reductants <br /> January 19, 2005 ATC-Diamond Walnut <br /> 1 <br />