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<br />t One additional monitoring well was constructed adjacent to the ore <br />zone, on the north side of Rito Seco, in the Santa Fe Conglomerate <br />to monitor near-surface water quality. <br />' The proposed plant site and leach pad area are located on the <br />south side of Rito Seco (Figure C-1). Four monitoring wells, <br />completed in the Santa Fe Conglomerate, were constructed to monitor <br />' upgradient and downgradient conditions around the plant site and <br />leach pad area. The locations of all of the installed monitoring <br />' wells are shown on Figure G-1. The typical construction details far <br />monitoring wells completed in the ore zone and in the Santa Fe <br />' Conglomerate are shown on Figures G-2 and G-3, respectively. Table <br />G.1-1 presents the installation dates for all of the monitoring <br />wells. <br />Water quality monitoring at the surface water an~i groundwater <br />' gaging stations commenced in November 1987 and has continued through <br />the present. The schedule for water quality sampling is quarterly <br /> throughout the year, with monthly samples being obtained during the <br /> spring runoff period. All collected surface water and groundwater <br />' samples are analyzed for a full suite of parameters. Table G.1-2 <br /> presents a list of the water quality parameters analyzed. Table G.1- <br /> 3 is the proposed monitoring and sampling schedulE~. All water <br />' monitoring results will be submitted and analyzed as part of the <br /> annual report. In addition, water quality monitoring in wells <br />' adjacent to the heap leach facility will be monitored monthly for <br /> water quality and depth to water once leaching commene:es. The data <br />' collected from these adjacent wells will be reported to the Division <br /> monthly. <br />' <br /> G.2 Surface Water <br /> <br /> <br />1 <br />G.2.1 Site Descriation <br />The San Luis Project is located within the Rito Seco <br />drainage basin, which is a tributary to Culebra Creek, which <br />in turn flows to the Rio Grande. Rito Seco drains approximately <br />G-4 <br />(Revised 4/20/89) <br />