ARCHIVED REPORTS XR0011392 - Laserfiche WebLink

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' SECOR INTERNATIONAL INCORPORATE© www secor com S E C 0 R SECOR will analyze soil and groundwater from the ozone treated samples to determine ' what effect ozone will have on the leachability of the trace elements listed above If trace elements are not observed in soil prior to treatment, they will be removed from the subsequent analysis list. ' 3) Provide results of general minerals analyses of the groundwater Results from this analysis should be used to evaluate if naturally occurring minerals will precipitate out of the ' groundwater as a result of the ozone infection The following general mineral suite should be evaluated aluminum, antimony, arsenic, barium, beryllium, cadmium, calcium, chromium (III and VI), cobalt, copper, iron, lead, magnesium, manganese, mercury, molybdenum, ' nickel, potassium, selenium, silver, sodium, thallium, tungsten, vanadium, and zinc. SECOR will analyze groundwater prior to treatment and in the ozone treated samples to ' determine what effect ozone will have on the leachability of the trace elements listed above if trace elements are not observed in soil prior to treatment, they will be removed from the subsequent analysis list Metals influenced by ozone that will undergo precipitation are arsenic, chromium, iron and manganese which are typically solub►lized by either microbial reduction (arsenic, iron and manganese) or chemical oxidation (chromium) in TPH impacted soils 4) Provide an estimate of the mass of other constituents/parameters, including Electrical Conductivity, chlorides, sulfides, etc which will be released into the aquifer as a result of the ozone infection, and the rationale for the estimate SECOR will present proposed chemical reactions for elements in soil which will be solub►lized by chemical oxidation and may contribute to TDS Those constituents will ' include sulfides predominantly, which are generated by the reducing conditions of the aquifer where the TPH was released Because ozone treatment does not include introduction of other TDS species, it is not anticipated that the treatment will significantly impact these parameters above levels already observed in groundwater upgrad►ent of the ' impacted area Therefore, SECOR will not analyze for these constituents, only provide estimates of how they might be impacted using chemical equations ' 5) Provide an estimate of the mass of TDS that will be mobilized by the infection of the ozone, and the rationale for the estimate Ozone sparg►ng does not require addition of TDS species, and potential solubilizat►on due to chemical oxidation is anticipated to be insignificant Therefore, SECOR does not anticipate a change and will only provide an estimate of the changes r6) Provide estimates of changes in pH in groundwater and the radius of influence for the proposed ozone infection ' SECOR has never observed significant changes in pH due to ozone sparg►ng due to the fact that ozone sparg►ng only generates minimal concentrations of acid species and the carbon dioxide generated by the oxidation is rapidly stepped from groundwater by additional sparg►ng Because pH is not impacted by ozone sparg►ng, pH will only be monitored in groundwater after treatment ' 2