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I Albtl <br /> GUR4Y SILVER'WhEs <br /> contamination are increased exponentially. This is a direct contradiction to <br /> the MSDS sheets, Please Justify why this is an acceptable practice in <br /> accordance with Rule 6.4.21(6)(b). <br /> b. In order to detoxify containment areas from where chemicals have spilled <br /> the washed liquid would be taken from the sump and re-introduced into the <br /> system. The material would be chemically different from that in the <br /> flocculant mixing tank(or tailings thickener tank) as well as potentially <br /> contain contaminants that could have been brought in from other areas. <br /> What is the rationale for having the sumpsdrain back into the system rather <br /> than reporting to a waste disposal storage areathat would be taken off site? <br /> c. Throughout adequacy review #1 various references have been made to <br /> process water, contaminated water and sump water. The description as to <br /> what this waterconsists of and where it is all collected is inconsistent. Rule <br /> 6.4.21(6)(b) <br /> i. The drawings (700-PI-002) indicate that the Flocculant sump goes <br /> back intothe flocculant mixing tank. The lime sump goes into the <br /> tailings thickener tank. Neither of these sump locations feed back <br /> into the process of watertanks as stated in response to 13a. Please <br /> clarify this discrepancy. <br /> ii. Response to 14 states that contaminated water will go to the sumps <br /> but ifthe tanks that those sumps report to are removed that liquid has <br /> nowhere to go. Please provide more information regarding the <br /> handling of contaminated water after the equipment has been <br /> removed. <br /> d. Based on drawing 700-PI-002 the hydrated lime sump is indicated as being <br /> the Reagent Building Sump. The containment wall is 2'10" and requires <br /> cross over stairs to access. This suggests that the lime area sump is strictly <br /> for the lime containment area, please clarify if there will be a sump for <br /> areas outside the designated containment areas, and if there is, indicate <br /> where that sump reports to. <br /> e. Provide drawing 500-PI-001 referenced for the lime sump taking materials <br /> to theTailings Thickener Tank. <br /> Response: <br /> It is of utmost importance to point out to the reviewer that the intent of sumps in <br /> a milling process is to enhance overall recovery of minerals being concentrated. <br /> Therefore, rinse water,process water, and material that reports to a sump is <br /> 101P � ; e <br />