1996-02-06_REVISION - M1977493 (11)

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Mr. Allen Sorenson Division of Minerals and Geology February 1, 1996 Page 7 13. A discussion of plant growth studies at Climax under an extensive evaluation waste rock and tailing geochemistry is outside the context of the EPP. Where improvements are made that meet definitions under the EPP, Climax will comply. 14. So Noted. 15. Numeric protection levels associated with any future discharge in the Storke area to the Arkansas River will target Water Quality Standards in the Arkansas subject to the rules governing Storm Water Discharge. Please note that Climax has committed to routing of runoff in the Stoke Yard to the Storke Waste Water Pump Station pending evaluation of the water quality. 16. CMC respectfully withdraws the qualifier from Section 5.2.1 of the EPP. 17. So Noted. Please refer to the February 1, 1996 letter responding to Division review of the Ground Water Monitoring Plan TR -08 application. 18. The reference in the old operating manual to pumps on the Storke Level that convey mine water to Storke Waste Water Pump Station refer to historic routing of water out of the Storke level when underground pumps on the 600 level received maintenance. Historically, the 600 level required continual dewatering and, when the pumps were down, Storke Level water was directed via a sump and pump from the Storke Portal to the Storke Pump Station. Upon abandonment of the 600 level, no additional pumping was required for pump maintenance underground. Water in the Storke Level, aside from occasional minor flows near the entrance during peak flow (conveyed to Stork Waste Water Pump Station), now flows to the 600 level hence to the 5 -Shaft Pump Station, hence to treatment. 19. CMC feels that the management of water treatment sludge in the Mayflower Pond is an operational management function outside the authorities granted the DMG under Rule 6.4.19. As such, CMC is not supplying a correlation of sludge accumulation and water storage capability in the Mayflower Pond. The Mayflower Pond currently contains adequate storage to maintain treatment and discharge of process water as permitted by the CPDS Permit. 20. So Noted 21. The 5 -Shaft Monitoring Well log was submitted to the Division in a letter dated December 14, 1994. The well log shows that the monitoring well has a grouted surface casing without screened sand in a bottom that is niether sand packed or bentonite finished. The December 1994 letter also states that the well was placed for the monitoring of water level. While it is conceivable that water quality samples could be taken from this well, the parameters measured could only be used for informational purposes.