ORIN successfully treated BTEX, MTBE, & Naphthalene contaminated plume with ex-situ chemical oxidation. An excavator was present to displace a certain area of soil down to depth. A portion of that soil was then placed back into the excavated hole while the treatment chemistry was being applied to the soil. The excavator would then continually mix the soil and chemicals together until the desired amount of treatment chemistry was applied. More soil was then added from the displaced pile while additional chemical was applied and mixed thoroughly. This process was duplicated until the desired consistency and chemical volume were applied to the entire targeted soil volume.