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operations staff. The acid consumption rate needed to neutralize the C-Pit water will <br />require acid deliveries every 8 days. <br />Attachment 2 is a conceptual level general arrangement of the system showing the major <br />system components and piping in relation to C-Pit and the plant. Attachment 3 is a <br />simplified process flow diagram. <br />The current CEMEX spray tower requires 170 gpm to cool the gas stream exiting the <br />kiln. Past pumping at 70 gpm resulted in a significant reduction in the C-Pit water level <br />until the scaling problem shut down the process. Pumping at a higher rate (over 2.4 times <br />greater) than in the past will accelerate [he lowering of the water level and reduce the <br />water surface area that has the potential to harm waterfowl. The estimated volume of <br />water in C-Pit has been approximated at 35 million gallons. This is considered a rough <br />estimate due to limitations in gauging the water depth and topography under the present <br />water surface. Any estimates of the duration of pumping at 170 gpm are therefore rough <br />estimates as well. For planning purposes, however, assuming a volume of 35 million <br />gallons, pumping at 170 gpm, and a plant on-stream factor of 0.9 results in an pumping <br />duration of approximately 160 days. This time estimate will be impacted by any incident <br />precipitation and return in-flows from the saturated rock and CKD surrounding the <br />present pond. <br />