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E. Impoundments <br />The only impoundments existing within the permit area in addition to sediment ponds are sewage <br />lagoons, and three non - discharging sumps. Former Mine -water treatment pond 12 has been <br />reclaimed. A set of evaporative, non - discharging sewage lagoons has been permitted near the <br />loadout for treating water from the Roadside Mine and the loadout. These have been reclaimed. <br />Two small sumps were constructed in the North Decline reclamation area and one sump was <br />constructed in the Cameo Borrow Area 41 (CBA -1) to serve to capture and treat runoff from <br />reclaimed lands. These sumps are adequately sized to contain runoff from a 25 -year, 24 -hour <br />storm event. Both sumps were reclaimed following approval of PR -5. <br />F. Surface and Groundwater Monitoring <br />The permittee conducted monitoring of groundwater in a manner approved by the <br />Division. The groundwater monitoring plan is detailed in Tab 18 of the permit application. <br />Piezometers have been installed in various permit area locations to monitor water level <br />and/or quality in alluvium, refuse fill, the Rollins Sandstone and abandoned sections of the <br />South Portals Mine. Monitoring locations are shown on "Roadside and Cameo No. l Mines <br />Hydrologic Monitoring Map" (Exhibit 56), in Tab 18. The groundwater monitoring plan <br />is outlined below; for additional detail refer to Tab 18 of the approved permit. <br />Rapid Creek and Cottonwood Creek Piezometers <br />GWMS -OIA, 0113, 02A, 02B, 03A, and 0313, monitor water levels May and September. <br />CRDA Piezometers <br />CRDA -0 1 through 03, and 0IA; and thirty piezometers (Pz 100 -107, 200 -206, 300 -307, and 400- <br />406), all on CRDA -1, monitored quarterly for water level. "Critical levels" defined for 100, 200, <br />300, and 400 series piezometers. <br />CRDA -04 through 06 installed on CRDA -2, monitored quarterly for water level. <br />Unit Train Loadout Piezometers <br />Quarterly water level monitoring UTL- 01,02,03,04; <br />Annual water quality monitoring UTL -02 and UTL -04 (parameters listed in Permit Table 18 -3); <br />Monitoring of UTL -O 1, 02, 03 & 04 Piezometers was discontinued in Apri12011 with the approval <br />of SL -7 and they were abandoned and reclaimed in May 2011. <br />Roadside South Portal Workings <br />Well N -1, located at reclaimed North Decline; quarterly water level monitoring. <br />Rollins Sandstone Wells <br />25 <br />