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• <br />• <br />• <br />Mountain Coal Company' 1999 Anoual Hydrology Report <br />Table 4 <br />Groundwater Monitoring Program <br /> Water uali <br />Station Water Level Field Parameters' Lab Anal ses <br />Wells Monitorin Dnin~ a from Refuse Piles <br />GP-J (M W-81 3 times per ywr 3 rimes per Ywr Annually? <br />GP-0 (M W-9) 3 tim6 pa ywr 3 times per Ywr Annuall 7 <br />Y <br />GP-6 3 rimes per ywr 3 times per Ywr Annually? <br />GP-7 3 lima per year Slimes per Ywr Annuall 7 <br />RPE-1 J times pa year 3 times per Ywr Annuall 7 <br />RPE-7 3 times per year 7 times per Ywr Annually? <br />Wells Com leted in the Barren Member Abore the F Seam <br />SOM-13 3 times wr 3 times R vwr Annuall <br />SOMAS-H-I 3 times er wr 3 times wr Annually <br />SOh7J5-H-: 3 times er ear 3 times wr Armually <br />SOM-80 3 times er ru 3 times wr Annually <br />SW-I~ 3times er vear 3times wr Annuall <br />$W-2° 3 times ear 3 times wr Annuall <br />$W-3° 3 times n ear 3 times er wr Annually <br />SK'-0' 3 limes er vwr 3 times er ear Mnually <br />SW-5s 3 limes wr 3 times er ear Annually <br />$W-ti° 3 times vwr 3 times er ear Annuall <br />Wells Com tared in the "F" Seam <br />SOMC-76 3 times vwr 3 times a wr Annuall <br />$OM-2-H Slimes vwr 3 times vear Armually <br />$OM-16-H 3 times vcar 3 times er vwr Annuall <br />K'ells Com tared in or above the"E" Seam <br />96.2: 3 times er wr 3 times er wr Annuall <br />96-_'7-I 3 times er ear 3 times er vwr Annually <br />K'ells Com tared in or above the"B" Seem <br />C-72-H~ 3 times ear 7 times wr Annuall <br />RAV~b 3 times er vwr Slimes wr Annuall <br />SOM-129-H 3 times er wr 3 times er wr Annually <br />SO. W-I 3 times er ear 7 times wr Annuall <br />K'ells Com tared in the Rollins Sandstone <br />SOM-128-H~ 3 times er wr 3 times wr Annually <br />$O.W-3' Slimes wr 3 times wr Annuall <br />I Field parameters include pH, conductivity, and temperature. <br />~ 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, nitratelnirrite, phosphate <br />(PO; 7 as P), sulfate, iron (total and dissolved), manganese (total and dissolved), arsenic, cadmium, lead, mercury, selrnium <br />and zinc. All parameters were analyzed for their dissolved (orm unless stated otherwise. <br />7 If water is presrnt, samples will be obtained three times per year for laboratory analysis of TDS, Fe, and Mn. <br />° Monitoring was discontinued per Technical Revision No. 88, approved August 1999. <br />West Elk Mine <br />D:'531-032~520jmV:',1999 AHR'.Tablr ° doe <br />831-032.520 <br />Page 10 <br />Weigh! Water Engineers <br />