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Surface Water Monitoring Stations: STREAMS AND DITCHES Monitoring of surface water stations during 2000 was concentrated in the Stevens Gulch and East Roatcap Creek areas as these drainages had seen recent mining activity and were projected for further activity during the current permit term. Overall, adverse impacts attributable to mining were not evident at any of the monitored surface water stations (refer to Table 1 and Map No. 4-1). Stations SW-5 (Stevens Gulch), SW-6 (East Roatcap Creek), and SW-10 (Terror Ditch), exhibited normal flows and water quality parameters consistent with previous years data. No evidence of subsidence impacts in these drainages was apparent. Mining occurred in the Stevens Gulch drainage upstream of site SW-5 during 1993 in Panel C. Panel C mining was designed and conducted to prevent the development of subsidence to protect the waterway and certain structures in the vicinity. Data collected during 2000 shows these protective measures were successful. Surface Water Monitoring Stations: SMALL AREA EXEMPTIONS The east mine fan level was defined as a small azea exemption since drainage from this azea (refer to Map 8-1) is not conveyed to a sediment pond. Three sample points were defined at this location and sampled for conformance with the NPDES discharge alternative limitations requirements associated with dischazges occurring because of precipitation events of less than the 10-year and 24- hourmagnitude. In these instances, settable solids and pH limitation must be met. No samples were collected during 2000 from these SAE points. Coal Member of Mesaverde: All previously monitored drill holes have now collapsed and are no longer monitored. The final monitorable hole, DH-60, was monitored by a long tube used to pressurize the hole and produce an estimate of water level. This tube has become ineffective. The removal of these sights is explained in TR-34. Surface Water Monitoring Stations: PONDS East Roatcap Creek -Fifteen ponds in the East Roatcap Creek drainage were monitored during 2000 (refer to Table 1 and Map No. 4-1). Ponds were monitored quarterly for water levels and field parameters if they were dischazging. No evidence of mine impacts was noted. During 1994 retreat mining was done under Ponds 10-1, 10-2, 10-3, 10-4 and 10-11. Advance mining occurred under ponds 88 and 14-2 in 1997. The East Roatcap Creek Ponds were physically intact throughout 2000 and showed no subsidence effects. 61~est Roatcap Creek -Two ponds in the West Roatcap Creek drainage (refer to Table 1 and Map No. 4-1) were monitored during 2000. The ponds were monitored quarterly for water levels and field parameters if they were discharging. No evidence of mine impacts were noted. The West Roatcap Creek ponds were physically intact throughout 2000 and showed no subsidence effects. Steven's Gulch -Five ponds were monitored within the Steven's Gulch drainage (refer to Table 5 and Map No. 4-1). Ponds 85 and 13-7 were monitored quarterly for water levels and field parameters. Pond 85 was undermined by Panel B in 1992. Pond 13-7 was also undermined during 1992. No subsidence impacts or other irregularities were evident at either of these locations during 2000. • 5