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Mountain Coal Company 2000 Annual Hydrology Report Wesl £!k Mine <br />• <br />Table 6 <br />Underdrain and Mine Water Monitoring <br /> Water uali <br />Station Flow <br />Measurements Field Parameters[ Lab Analyses <br />LRP Underdrainsa 3 times per year 3 times per year Annually <br />RPE Underdrains' 3 times per year 3 times per year Annually <br />Mine Inflows° 3 times per year 3 times per year Annually <br />~ Field parameters include pH, conductivity, and temperature. <br />Z Annual analyses dunng the third sampling period include laboratory analyses of pH, conductivity, total dissolved <br />solids (TDS), calcium, magnesium, sodium, SAR, hardness, bicarbonate, chloride, un-ionized ammonia, <br />nitrate/nitrite, phosphate (PO,"' as P), sulfate, iron (total and dissolved), manganese (total and dissolved), arsenic, <br />cadmiurr4 lead, mercury, selenium and zinc. All parameters were analyzed for their dissolved forth unless stated <br />otherwise. <br />' LRP and RPE Underdrain flows are sampled seasonally. <br />° Field parameters and a water sample will be obtained (and parameters per footnote #? analyzed) if the inflow is <br />of sufficient discernable flow (>5 gpm) and/or lasts longer than 7 days. I(the inflow is continuous, an initial <br />sample will be obtained. and then sampled at least annually thereafter. <br />• <br />,r ~I <br />u <br />83l-032.550 Page 13 Wright Water Engineers <br />