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COLORADO DEPARTMENT OF PUBLIC HEALTH & ENVIRONMENT - Water Quality Control Division <br />Rationale - Page 10 Permit No. COR-040000 <br />VI. RESPONSE TO PUBLIC NOTICE COMMENTS <br />The Division received comments on the proposed amendment from the Environmental Protection Agency. Based on these comments <br />and Division review, the following changes/clarifications were made to the renewal permit and Rationale: <br />A. Heap Leach Pads <br />The requirement in Part I.B.3 and Part L C.2 of the permit to include areas of outdoor manufacturing in the SWMP site map was <br />further clarified to specifically require the inclusion of heap leach pads. <br />B. Construction Activities <br />It was clarified that construction activities disturbing one or more acres of land are not covered under the permit. See Section <br />X.C of the Rationale. <br />C. Non-Stormwater Discharges <br />Several new sources were added to the list of allowable non stormwater discharges in Part I.D.3 of the permit in accordance with <br />the sources that are allowed under EPA's stormwater multi sector general permit. After further review, the Division has <br />determined that sufficient information is not available at this time to justify permitting these additional sources under a <br />stormwater general permit that relies on BMPs instead of numeric effluent limits for protection of water quality. Therefore, the <br />new sources have been removed from the renewal permit. <br />Kathryn Dolan <br />August 22, 2006 <br />C.I <br />0