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Springs and Seeps <br />• The spring and seep monitoring program sampled flow and water chemistry on springs <br />within a one- mile radius of the underground workings once annually during the late <br />summer of the year, to ensure that geohydrologic changes associated with the mine do not <br />diminish the water quantity or quality of springs. Four springs were monitored annually <br />during August (Appendix Q. Monitoring was terminated after release of liability for areas <br />of underground mining. <br />Ponds and Direct Discharges <br />All sediment ponds and direct discharge points are permitted under NPDES Permits CO- <br />0000906. Sampling stations for this permit are described below. <br />MDNE-1: NE-001 is a grab sample station from the New Elk Mine water discharge V- <br />notch flume located on the Purgatoire River for NPDES Discharge Permit CO-0000906. <br />The station monitors the quality and quantity of mine water discharge from the New Elk <br />Mine. During the third quarter of 1989, the mine was sealed and the discharge of mine <br />inflow water was terminated until pumping resumed in December of 2008. <br />NE-OOI-G: NE-001-G is a site under NPDES Permit No. COG-310069. This site was used <br />to discharge water from remedial activities at the UST facilities area. NE-00 I-G was <br />sampled at its outfall prior to discharging into ditch D-16, which flows into Pond NE007, a <br />site monitored under NPDES CO-0000906. This site was eliminated during 1999 with <br />reclamation of the remediation system and termination of Permit COG-31 0069 as <br />• approved by CDPHE. <br />NE-004: A grab sample station of the discharge from the primary spillway of sediment <br />pond 004. This site predominantly handles stormwater runoff from the New Elk <br />underground development waste pile. <br />NE-005: A grab sample station of the discharge from the primary spillway of sediment <br />pond 005 which treats stormwater and industrial runoff from the area east of the trucking <br />offices. This pond was reclaimed in 2003 and the site is no longer monitored. <br />NE-006: The thickener recycling pond 006 (prep Plant process water) is a nondischarging <br />facility. <br />NE-007: A grab sample station of the discharge from the primary spillway of sediment <br />pond 007. This site treats stormwater runoff from the East Portal of the New Elk facilities <br />area as well as handling flow from NE-033. <br />NE-008: A grab sample location at the primary spillway outfall of sediment pond 008 <br />located at the base of the Refuse Disposal Area of the New Elk Mine. <br />NE-009: A grab sample station of the New Elk Mine water discharge pipe located in <br />Apache Canyon. The station was established to monitor the quality of mine water <br />discharge from the New Elk Mine; the mine has been inactive and sealed since 1989 with <br />is no discharge occurring at this site. <br />7