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Springs and Seeps <br />The spring and seep monitoring program samples flow and wafer chemistry on <br />springs within aone- mile radius of the underground workings once annually <br />• during the late summer of the year, to ensure that geohydrologic changes <br />associated with the mine do not diminish the water quantity or quality of springs. <br />Four springs are monitored annually during August (Appendix C). <br />Ponds and Direct Discharges <br />All sediment ponds and direct discharge points are permitted under NPDES Permits CO- <br />0000906. Sampling stations for these permits are described below. <br />MDNE-1: NE-001 was a grab sample station from the New Elk Mine water discharge <br />pipe located on the Purgatoire River for NPDES Discharge Permit CO-0000906. The <br />station was established to monitor the quality and quantity of mine water discharge from <br />the New Elk Mine. During the third quarter of 1989, the mine was sealed and the <br />discharge of mine inflow water was discontinued. <br />NE-001-G: NE-001-G is a site under NPDES Permit No. COG-310069. This site is <br />used to dischazge water from remedial activities at the UST facilities azea. NE-00 I-G is <br />sampled at its outfall prior to discharging into ditch D-16, which flows into Pond NE- <br />007, aaite monitored under NPDES CO-0000906. This site was eliminated during 1999 <br />with rectamation of the remediation system and termination of Permit COG-3] 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. <br />NE-006: The thickener recycling pond 006 (Prep Plant process water) is a non- <br />discharge facility. <br />NE-b07: A grab sample station of the discharge from the primary spillway of <br />sediment pond 007. This site treats 5tormwater runoff from the Easf Portal of the <br />New Elk facilities area as well as handling runoff from NE-OOIG andNE-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. <br /> <br />7 <br />