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Table 6 <br />Underdrain and Mine Water Monitoring <br />• <br /> Water Q uality <br />Station Flow <br />Measurements Field Parameters' Lab Analyses' <br />MB-2R' 3 times per year 3 times per year 3 times per year <br />RPE Pond' 3 times per year 3 times per year 3 times per year <br />Mine Inflows' 3 timcs pcr year 3 times pcr year Annually <br />' Field paaameters include pH, conductivity, end temperature. <br />a Annual analyses during the third sampling period include laboratory analyses of pH, conductivity, total dissolved solids <br />(TDS), calcium, magnesium, sodium, SAR, hardness, bicarbonate, chloride, un-ionized ammonia, nitrate/nitrite, phosphate <br />(POq-3 as P), sulfate, iron (total and dissolved), manganese (total and dissolved), arsenic, cadmium, lead, mercury. <br />selenium and zinc. All parameters were analyzed for their dissolved form unless stated otherwise. <br />' Underdrain Bows to MB-2R and RPE Pond are sampled seasonally. NPDES Bow and quality measured quarterly if pond <br />discharged. <br />' Field parameters and a water sample will be obtained (and parameters per footnote #2 analyzed) if the inflow is of <br />sufficient discernable flow (>5 gpm) and/or lasts longer than 7 days. If the inBow is continuous, an initial sample will be <br />obtained, and then sampled at lean annually thereaRer. <br />• C:\-Proten Files\831-037\SOOjmk\1998 AHtt\Table 6.doc <br /> <br />