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The Roadside Mines are required to submit to the Division an Annual Hvdrologic Report <br /> that provides information on the water quantity and quality for both the surface and <br /> groundwaters in the permitted area. In addition, quarterly NPDES reports are submitted <br /> to the Division and the Department of Health to comply with the current laws governing <br /> point sources. In the event of an effluent discharge that is not within compliance <br /> parameters, a written notice will be forwarded to the Division and the Department of <br /> Health. <br /> Groundwater monitoring wells are located in both the Rapid Creek and Cottonwood Creek <br /> basins. G WMS 02a and 02b are upstream on Cottonwood Creek,G WMS 03a and 03b are <br /> upstream on Rapid Creek, while GWMS Ol a and 01 b are downstream on Rapid Creek <br /> (downstream from the confluence with Cottonwood Creek). These wells have been placed <br /> to monitor surface subsidence impacts on creek flows in the southern permit area; <br /> therefore, water level is the only parameter measured. <br /> CRDA-I and CRDA-2 piezometers are monitored for water levels on a quarterly basis <br /> (thirty-four on CRDA-I and three on CRDA-2). The thirty, 100 through 400 series <br /> piezometers on CRDA-1 were installed in 1994 at four locations to monitor water levels <br /> in multiple zones within the refuse pile. Stability analyses performed by a consultant to <br /> the operator established "critical levels" for each of the thirty piezometers, which if <br /> exceeded, are to be reported by the operator, and may necessitate further stability <br /> evaluation and possible remedial measures. Critical level for each piezometer is listed in <br /> permit Table 18-4. <br /> The Rollins Sandstone wells were installed in the summer of 1997 in large part to address <br /> questions raised by the Division in the 1995 mid-term review and review of PR-02, <br /> regarding the hydrologic characteristics of the Rollins Sandstone within the permit area. <br /> All water from mine operations that is pumped through the mine workings before being <br /> discharged at the surface is to be tested annually for a full suite analysis (Table 18-2, <br /> "Annual Surface Water Monitoring Parameters"). <br /> 2. The permittee will conduct monitoring of surface water in a manner approved by the <br /> Division. The monitoring plan was submitted under 2.05.6(3)(b)(iv) and (4.05.13(2)). <br /> Surface water monitoring locations are shown on Exhibit 56 in the permit. Surface water <br /> monitoring will include sediment pond discharge, mine water discharge, flow from <br /> Cottonwood Creek, Rapid Creek, Coal Creek and Jerry Creek, and spring and seeps. <br /> Sediment pond discharge will be monitored only when pond dewatering occurs in <br /> accordance with NPDES requirements. Monitored parameters and frequencies as specified <br /> in the CDPS discharge permit are listed in Table 18-1 and consist of flow rate, total <br /> suspended solids,total dissolved solids,oil and grease, pH, and iron. <br /> Powderhorn's CDPS permit includes four mine dewatering points. Mine water discharge <br /> volume is measured by flow meters at CDPS discharge points 001,002, and 004. Site 015 <br /> at the 2-West Portals is inactive,and has never been used. Water quality of the mine <br /> discharge water will be tested annually for parameters listed in Table I8-2. CDPS <br /> 29 <br />