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Table,l.-GioJud,Watei Monitoring Well;(-ocatioii&Mdtiitoiiu'Zdne Pmfi g ~t~~• ~-~- ' ~ :"'. ~ ~flH~~ " i,~ V! ~t~f~: --ales -.~11C_i ~ ~: c. Monitoring Well ID Completion Aquifer Aquifer Position Respective of 0-5 Year Solution Mining Panel Completion Zone Layout Well 19-3 Alluvial Alluvium Outside Panel Up-gradient Well 21-2 Alluvial Alluvium Outside Panel Down-gradient Welt 28-1 Alluvial Alluvium Outside Panel Cross-gradient Down- gradient Well 21-5 Alluvial Alluvium Outside Panel Down-gradient Well 29-0U Upper Ointa Outside Panel Up-gadimt Wel12l-3U Upper Uinta Outside Panel Down-gadient We1120-10 Upper Uinta Outside Panel U -gradient Well 19-2 Upper Above A Groove Outside Panel Up-gradient Well 21-3A Upper A Groove Outside Panel Down-gradient We1129dA Upper AGroove Outside Panel Up-gcadimt We1121-3B Lower B Groove Outside Panel Down-gradient We1129-4B Lower B Groove Outside Panel U ien[ Well 29-2B Lower B Groove Outside Panel U gradient We1121-3D ~w.er Dissolution Surface Outside Panel Down-gradient Well 29-4D Baer Dissolution Outside Panel Up-gradient Surface :i #-?:JF-81~F ~r.'b u ' `pi -!- -(~1 i1=1',f -'.-br i~,t r-li 9!r' _i^'!t ~- :t` Only one monitoring well does not provide relevant or useful water quality information as detailed in the original plan. We1120-4A has been removed from the water quality monitoring program for both the temporary suspension and commercial mining production operating modes. The well was originally drilled as a B Groove monitoring point but did not produce sufficient water. It was cemented and the casing was perforated at the A Groove; however, even during the baseline period, the data indicated evidence of localized cement contamination in the perforated zone which causes interference and makes water quality data from this point difficult to evaluate in relation to the mining activity. Although water quality data is not relevant from this point, water level data will continue to be collected from we1120-4A. A map of the layout of the ground water monitoring wells is provided in Figure 1 below. Draft Modification No. 9 LTIC Area Permit No. C030858-00000 Page 23 of 44