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V. Hydrologic Balance - Rule 4.05 <br /> Water Quality Standards and Effluent Limitations <br /> CEC has established drainage systems, including sediment ponds,to meet the applicable State <br /> and Federal water quality requirements for downstream receiving waters [Rule 4.05.2]. <br /> There is currently no surface water monitoring at the Keenesburg Strip Mine, because there is no <br /> point of surface water discharge. On December 18, 1989, Technical Revision 23 approved the <br /> deactivation of the Colorado Discharge Permit System (CDPS)permit, and the Department of <br /> Health (former name of CDPHE) concurred with this decision. Permit COG-850038 was later <br /> reinstated with an expiration date of June 30, 1997. CEC again proposed, and CDPHE approved, <br /> the expiration of the CDPS permit without renewal (the CDPHE letter regarding the Request for <br /> Inactivation of this permit can be found in Division files). <br /> Ground Water Monitoring Plan <br /> The table below summarizes well information. Elevations are top of casing elevations. <br /> Well Elev. Aquifer Location <br /> FPW 4780 Ennis Draw Mine <br /> DH96 4764 Ennis Draw Downstream from Mine <br /> DH122 4814 Ennis Draw Upstream from Mine <br /> SMW-2 4803 Reclaimed Spoil Mine <br /> AMW-1 4804 Undisturbed Overburden Downstream of B Pit <br /> FAMW-2 4811 Reclaimed Spoil Downstream of A Pit <br /> Well sampling and water levels of subsurface water are taken from Wells SMW-2, AMW-I, <br /> FPW, DH96 and DH122. Wells are sampled quarterly. <br /> The sampling parameters are: <br /> o Calcium -dissolved <br /> o Iron -dissolved <br /> o Magnesium -dissolved <br /> o Manganese - dissolved <br /> o Molybdenum -dissolved <br /> 12 <br />