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Antonia Vorster -5- 21 October 1987 <br /> o Determine volume chemical characterization and variability of blowdown. <br /> Analyses should include TDS, metals, general minerals, priority pollu- <br /> tants, and oil and grease. <br /> o Identify chemicals used in manufacturing process. <br /> o Determine pond capacity. Submit water balance calculations considering a <br /> 24 hour 100 year storm event, annual rainfall, and the 2' minimum free- <br /> board. <br /> o Develop requirement of Subchapter 15 spill prevention and contingency <br /> plan. <br /> o Proposed monitoring frequency for discharge. <br /> o Propose measures to comply with Subchapter 15 requirements. <br /> RGA:ej <br /> Attachments <br />