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<br />shows the locations of surface stations anti wells for tha Vew Horizon Mina '_ moniroring <br />program. ~todifiucions :o the existing monitorine locations cor surface and groundwater are <br />discussed below. .all ~a[a will be rooormd in tha annual hydrolotry report. <br />Surface Wafer Monitoring <br />The total number of surface water sampling low[ions will be six. Calamity Draw will contain <br />four stations while the rtmaining two stations will be located an the Wese Lateral Ditch. <br />Smtions SW-Y102 u located on a tributary of Calamirv draw and will remain as a monitoring <br />point for water Ieaving Pond 007. This wll also act as the iVPDES discharge monitoring <br />point for Pond 007, The two new scarions, SW-`1108 and Sw-Y109 will be located on <br />Calamity Draw, The upstream station, SW-Y103 will be located just west of Lincoln Street <br />as it @ows from under the road. This smdon will dctine water quality and quanrity before <br />is enters [he area potentiaQy influenced by the mine. SW-Y109 will be located on Calamity <br />Draw west of the mine peratit boundary but eas[ of the Yucla waste water lagoons. This <br />station wt71 define the water quality and gttantity az it leaves the site but before it is <br />influedced by the waste water lagoons. Etdsting staton SW Y101 wrll be monitored Eor one <br />• year m establish a correlation of past dam collected on Calamity Draw. <br />Existing stations SW-~f104 and SW-Y105 will remain is place on the West Lateral Ditch- <br />These two smtions will monitor @ow and water'quality of the ditch >.vstem as it amen the <br />upstream area of the mine and as it leaves the mine area. <br />Monthly Dow, pH, temperature, and conductivity measuremenu wilt be taken a[ the sa <br />motdmring locations to assess potential impacts of the mine and to fulfill the requirements <br />For the water augmentation plan. Water quality parame[ers listed in Table 6 will be <br />co0ected on a quanerly basis. This mole represents the water quality parameters tha[ were <br />co0ected during subsequent sampling periods. By continuing with this parameter list, the <br />baseline can be utt7ized to better define the conditions as the mining proceeds. The <br />discharge point at Pond 007 will also be monitored for YPDES requiremenu. <br />Groundwater Monitoring <br />Western Fuels proposes to moditYthe groundwater monitoring program to include ]ocadiins <br />directly up and down gradien[ of the site. The approved plan wiIl consist of existing wells <br />and insmUa[ion of a new set of wells m monitor the overburden, Dakota Coat cad the <br />underburden aquifers in the northeast corner of the site- and two alluvial wells to be located <br />on Calamity Draw upstream and downstream of tha mine permit boundary (Map ? 04.7-1). <br />Tha upstream well will be located in the @ocxl plain near Lincoln Street in the south east <br />l4 <br />• <br />Attachment 2.04.7-5-17 <br />