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• listing as well as minimum, maximum and average values for the operafional period of the monitoring point and baseline <br />periods where applicable. The baseline values are taken from all recorded sampling events until affected by the mining <br />operation, with operational values reflecting the period following the baseline period. <br />OVEM Groundwater Monitoring Wells: <br />Groundwater monitoring wells BOl, B02, and B04 through B08 are near the East Mine facilities (see Map No. 8-1). <br />Well B07 did not have adequate water to monitored for annual water quality parameters. Well BO 1 was destroyed by a <br />dozer doing maintenance work during 2002. Wells B02, B04 through B06 and Well B08 are monitored semi-annually <br />for water levels to assess slope stability in and azound the East mine facilities. <br />Patterns typically associated with these wells in the past were again evident during the 2004 monitoring yeaz. B03 is <br />blocked and can no longer be monitored for field parameters or water quality, it has been removed from the sampling <br />regime by TR-34. Wells B02, BOS, B06 and BOS remained dry to damp throughout the year. Well B04 showed <br />moderate water level fluctuations within the established normal ranges previously documented. Conductivity values at <br />B07 retrained within the range of values previously established. Other monitored pazameters fluctuated slightly with <br />established ranges. <br />OVWM Groundwater Monitoring Wells: <br />One piezometer (OV WM) was installed in the fill at the Orchard Valley West Mine. This well was destroyed during <br />mine reclamation and is no longer monitored. <br />North Fork Alluvium Groundwater Monitoring Wells: <br />Three (3) wells, MW-I, MW-2 and MW-3 (see Map No. 8-3) are completed in the North Fork of the Gunnison alluvium <br />During 2004the wells were monitored monthly for water levels and showed typical seasonal fluctuations within <br />previously established ranges. MW-1 and MW-3 were monitored quarterly for quality during 2004, if water was <br />• available, to monitor potential groundwater effects steruning from the coal stockpile and load out facilities in the North <br />Fork Valley. Well MW-1 is east of the load-out in an azea that should be outside or above the area of influence of the <br />coal stockpile and loadout area. Well MW-3 is southwest of the coal stockpile area in a location that should seethe full <br />impact of any potential groundwater degradation. The 2004 data continues to show that the stockpile and load-out are <br />not degrading the water in the alluvium <br />East Roatcap Creek Colluvium Grouudwater Monitoring Wells: <br />Shallow groundwater monitoring wells, SM-5, SM-6, SM-7, SM-10 and SM-11 (see Map No. 4-1) are in the East <br />Roatcap Creek drainage. The wells were monitored for water quality pazameters, water levels, and field parameters to <br />detect ittrpacts associated with mining in the west pod. All of the wells were monitored semi-annually for water levels, <br />field pazameters and water quality. SM-7 is within the projected angle-of--draw of mine workings. <br />Water levels from the five Roatcap Creek colluvial wells continued to show typical seasonal variability with water levels <br />elevated in the spring and lower at the end of [he year. No anomalies or impacts on water levels were observed in 2003 at <br />these wells. <br />Steven's Gulch Colluvium Groundwater Monitoring Wells: <br />Shallow groundwater monitoring wells, SM-1 and SM-9 (see Map No. 4-i) aze in the Steven s Gulch drainage. The wells <br />are monitored for water quality parameters, water levels, and field pazameters to detect impacts associated with mitring in <br />the central pod. Required monitoring for wells SM-1 and SM-9 was semi-annually during 2003 for water levels and field <br />parameters. Well SM-1 is next to areas mined in 1991 and 1992 but showed no appazent impacts in the field data <br />collected during 2004. Well SM-9 was undermined by Panel C during 1993 but showed no apparent impacts in the field <br />data collected during 2004. No anomalous water quality observations were apparent during 2004 at the Steven's Gulch <br />shallow groundwater monitoring wells. <br />Surface Water Monitoring Stations -SPRINGS <br />East Roatcap Creek -Two springs were monitored in the East Roatcap Creek drainage (refer to Table 1 and Map No. 4- <br />1)during 2004. Spring 30 was found to be dry and damp during the yeaz. Spring 30 was first undermined in April, 1983. <br />2 <br />