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Monitoring <br />Well ID <br />Well 28-1 <br />Well 19-2 <br />Well 21-3A <br />Well 29-3 <br />Well 20-4A <br />Well 20-4B <br />Well 21-3D <br />W el 129-4 D <br />Aquifer <br />Completion Position Respective of 0-5 Year <br />A uifer Completion Solution Mining Panel Layout <br />q 7nna <br />Alluvial ~ Alluvium ~ Outside Panel <br /> <br />Upper /'1 V V V G /"~ <br />Outside Panel <br />roove <br />Up-gradient <br />Upoer <br />--• - A Groove <br />-r--- -____---- - <br />di <br /> <br />Upper <br />i A Groove Inside Panel Cross-gra <br />e~ <br />nnwn-nr~riier <br />Lower B Groove <br />-- -- '; Outside Panef _ <br />--- _ - __ Up-gradient <br /> Cross-gradient <br />Upper A Groove Inside Panel _ U~gradient <br /> ~ Cross-gradient <br />Lower j B Groove Inside Panel I In_nr~rlicnt <br />vwo~~uuvi ~ i <br />Lower ~ Surface Outside Panel Down-gra ien <br />Lower Dissolution Outside Panel Up-gradient <br />Surface _ <br />Down-stream <br />KCHB (Burke) Alluvial Alluvium Outside Panel , (several miles) <br />Domestic Well ~ East side of <br />Piceance Creek <br />Ground-water monitoring began in September 1999 and continued on a monthly trequency fur 15 <br />months to provide baseline data that would characterise the aquifers prior to commercial mining activity. <br />Following the beginning of conunercial operations in October 2000, the monitoring program continued <br />on a monthly basis and to date includes over 1 S operational quarters of ground water data from each <br />sampling location. <br />FINAL Addendum to SOB For Modification No. 9, UIC Area Pern~it No. C0308S8-00000 Page l7nf'~ <br />