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' TABLE 2-1 SURFACE WATER QUALITY PARAMETERS AND ' ALLUVIAL MONITORING HOLE WATER QUALITY PARAMETERS' ' FIELD MEeSUREMENT3 LABO ATOR Discharge Ammonia Y NALYSIS Potassium pH Bicarbonate Selenium* ' Specific Conductance Boron Sodium Temperature Calcium Sulfate Carbonate Total Suspended Solids ' Chloride Total Dissolved Solids Copper' Total Volatile Solids Fluoride Iron* Sodium Adsorption Ratio Lead* ' Magnesium Manganese* ' Nickel' Nitrate ' 'Groundwater holes in Leases C-8424 and C-8425 will t>e sampled and analyzed for these parameters prior to entering those leases. ' * Total metals analyses for surtace, dissolved for alluvial and groundwater ' Sandstone Facies, coal and Sittstone Facies, and Lower Sandstone Facies are referred to as upper, middle and lower respectively as a matter of simplicity. The Deserado Mine coal seams are located near the bottom of the Coal and Sittstone Facies (middle zone). Water levels are measured quarterly in the fifteen groundwater monitoring holes. The water level is measured monthly in OHL-5, and samples collected quarterly to analyze for the twenty two water quality parameters listed in Table 2-1. ' The alluvial monitoring hole, RM-1, was drilled east (downstream) of the pond for Refuse Disposal ' Area 213 on September 28, 1989. The location of this hole is shown on Plate 1. This monitoring hole was drilled to fulfill a requirement of the mine permit. RM-1 was drilled to bedrock at a depth of 32 feet. No water was encountered during drilling. The hole was drilled with seven-inch hollow ' flight augers and cased with perforated two-inch PVC pipe. The hole is monitored on a monthly basis. No water has been detected in RM-1 to date. If detected, the water level will be measured ' and samples collected quarterly to be analyzed for the parameters listed in Table 2-1. ' 4