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• <br />• <br />• <br />Mountain Coa! Company 1999 Annual Hydrology Reporf <br />Table 4 <br />Groundwater Monitoring Program <br /> Water uaG <br />Station Water Level Field Parameters Lsb Anal sea= <br />Wells Monitorin Drains a from Refuse Piles <br />GP-3 (M W-8) 3 times per year 3 times per year Mnually3 <br />GP-0 (M W-9) 3 times per year 3 times pa year Annually3 <br />GP-6 3 times pa ywr 3 times per Year Mnuall 3 <br />GP-7 3 times per year 3 times per ywr Annuall 3 <br />Y <br />RPE-1 7 times per Year 3 times pa Year Mnuall 3 <br />RPE-7 J times per year 3 times perY~ Mnually3 <br />Wells Com Ie1ed in the Barren Member Above the F Seim <br />SOM-I l 3 times ear 7 times er car Mnuall <br />SOM-0S-H-I 3 times vwr 3 times mr Mnuallv <br />SOM-05-H-2 3 times er ear 3 times er ear Mnuallv <br />SOM-Bfl 3 times a wr 3 times wr Mnuallv <br />SW-I' 3 times ear 3 times er ear Annually <br />SW-?' Slimes vwr Slimes ervwr Annuall <br />SW-3' 3 limes er ear J times er vwr Mnuall <br />SW-0' 3 times er ear 3 times er wr Mnuallv <br />SW-S' 3 times wr 3 times wr Mnuallv <br />SW-6' 3 times er ear l limes er ear Mnuall <br />Wells Com leted in the `F' Seam <br />SOM-C-76 3 rimes wr 3 times er .~ Mnuall <br />SOM-?-H 3 times ~wr 3 times ear Mnuallv <br />SOM-16-H 3 times vwr 3 limes a wr Mnualk <br />Wells Com Ieted in or above the"E' Seam <br />96-2 : 3 times er vwr 3 times er vear Mnuallv <br />96-27-I 3 times er ear 3 times er vwr Annuall <br />Wells Com leted in or ^boce the °B" Seam <br />C-72-H' 3 times wr 3 times er ear Mnuall <br />RAV-0h 3 times er wr 3 times wr Mnuall <br />SOM-129-H 3 times a wr Slimes wr Mnuall <br />SO.W-I 3 times er ear 3 times wr Annuall <br />Kills Com leted in the Rollins Sandstone <br />SOM-128-H' 3 times ear 3 times er w Mnuallv <br />SO.W-3' Slimes ear 3 times wr Mnuallv <br />I Field ammeters include H, conductive <br />P P ty, and temperature. <br />Mnual 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, nitratelnitrite, phosphate <br />(PO,'' 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 form unless stated otherwise. <br />Wes! Elk Mine <br />3 If water is present, samples will be obtained three times per year (or laboratory analysis of TDS, Fe, and Mn. <br />~ Monitoring was discontinued per Technical Revision No. 88, approved August 1999. <br />D:'63I-032~SI0jm1.' 1999 AFIR Table a.doc <br />831-032.520 <br />Page 10 <br />Wrigh! Waler Engineers <br />