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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 aze 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. Annual monitoring of four <br />springs and seeps within the permit area was conducted for 10 years, but was discontinued <br />in 2006, pursuant to TR-50. <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 I8-I and consist of flow rate, total <br />suspended solids, total dissolved solids, oil and grease, pH, and iron. <br />The operator's CDPS permit includes one active dewatering point (Outfa11016) and one <br />back-up point (Outfall 002). Mine water discharge volume is measured by flow meter. <br />Water quality of the mine discharge water will be tested annually for parameters listed in <br />Table 18-2. CDPS monitoring parameters and frequencies for mine dewatering sites are <br />listed in Table 18-1. Whole effluent toxicity testing will be conducted quarterly at these <br />sites, in addition to the testing applicable to sediment pond discharges. Former Site 015 at <br />the 2-West Portals is inactive, and was never used. The 2 West Portals have now been <br />sealed. Discharge Site 001 at the South Portals has been inactivated, and Discharge Site <br />004 at the North Portals has been inactivated, and the North Portals have been sealed and <br />backfilled. <br />Flow volume will be monitored at Flume installations on Rapid Creek and Cottonwood <br />Creek at the following locations; SWGS-02--located on Cottonwood Creek in the NE 1 /4 <br />SE 1/4 Section l2, immediately upstream ofNo. 3 South Mains, SWGS-03--located on <br />Rapid Creek upstream of current mining activity, and SWGS-O1-- positioned on Rapid <br />Creek downstream of the confluence with Cottonwood Creek. Flow at SWGS-02 and <br />SWGS-03 will be recorded bimonthly during low flow (June through November). Flow <br />measurements on SWGS-01 will be cotlected with continuous flow recorder when the <br />creek is not frozen. <br />Monitoring of Coal Creek and Jerry Creek was initiated in 1995. [n 1999, monitoring <br />requirements were reduced to downstream stations SWGS-06 on Coal Creek and SWGS- <br />08, on Jerry Creek. The ephemeral flow in Coal Canyon will be monitored at the "dip <br />section" culverts located between CRDA-1 and CRDA-2. The intermittent flow of levy <br />Creek will be measured at a culvert near the Highline Canal, a short distance upstream <br />from the creek's confluence with the Colorado River. Instantaneous flow will be measured <br />quarterly at the culverts, for which flow ratings have been provided <br />G. Transfer of Wells <br />Permit Revision No. 3 Permit No. C-1981-041 <br />July 30, 2007 Page 27 <br />