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zoos <br />Springs and Seeps <br />The spring and seep monitoring program samples flow and water chemistry on springs within aone- <br />mileradius ofthe underground workings once annually during the late summer of the year, to ensure <br />that geohydrologic changes associated with the mine do not diminish the water quantity or quality of <br />springs. Four springs are monitored annually during August (Appendix B). <br />Ponds and Direct Discharges <br />All sediment ponds and direct discharge points are permitted under NPDES Permits CO-0000906. <br />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 pipe located <br />on the Purgatoire River for NPDES Discharge Permit CO-0000906. The station was <br />established to monitor the quality and quantity of mine water discharge from the New <br />Elk Mine. During the third quarter of 1989, the mine was sealed and the discharge of <br />mine inflow water was discontinued. <br />NE-001-G:NE-001-G is a site under NPDES Permit No. COG-310069. This site is used to discharge <br />water from remedial activities at the UST facilities area. NE-001-G is sampled at its <br />outfall prior to discharging into ditch D-16, which flows into Pond NE-007, a site <br />monitored under NPDES CO-0000906. This-site was eliminated during 1999 with <br />reclamation of the remediation system and termination of Permit COG-310069 as <br />approved by CDPHE. <br />NE-004: A grab sample station of the discharge from the primary spillway of sediment pond 004. <br />This site predominantly handles stonnwater runoff from the New Elk underground <br />development waste pile. <br />NE-005: A grab sample station of the discharge from the primary spillway of sediment pond 005 <br />which treats stormwater and industrial runoff from the area east of the trucking offices. <br />NE-006: The thickener recycling pond 006 (Prep Plant process water) is anon-discharge facility. <br />NE-007: A grab sample station of the discharge from the primary spillway of sediment pond 007. <br />This site treats stormwater runoff from the East Portal of the New Elk facilities area as <br />well as handling runoff from NE-001 G and NE-033. <br />NE-008: A grab sample location at the primary spillway outfall of sediment pond 008 located at <br />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 Apache <br />Canyon. The station was established to monitor the quality of mine water discharge from <br />the New Elk Mine, the mine has been inactive and sealed since 1989. <br />626-Annual Hydrolic Monitoring (Apc9.02).doc <br />April l7, 2002 <br />