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Dallas Corporation -4- 15 November 1989 <br /> CONCLUSION <br /> In order to comply with the TPCA, Dallas Corporation was required to submit a <br /> HAR, cease discharge of hazardous waste to the surface impoundment, and close <br /> the surface impoundment. The HAR will be complete when the following two <br /> items are completed: <br /> 1 . Analysis of existing data, as discussed above, is complete, and <br /> 2. The extent of soil contamination is determined. <br /> The cease discharge requirement was met in June of 1987. Dallas Corporation <br /> intends close the impoundment by removing all soils with increased levels of <br /> nickel and zinc caused by leachate migration. In order to determine whether <br /> this is practical additional sampling and analysis of soils was completed. <br /> RLN 11/15/89 <br />