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XGroundwater Monitoring Plan <br /> positions in the alluvium. Additional monitoring wells may be included in the future as <br /> necessary, or in response to regulatory concerns. <br /> Water quality monitoring sampling will begin within the next quarter following regulatory <br /> approval or consensus from DRMS. As proposed, the data collected will be used to <br /> develop a baseline of data for which future comparisons can be made. Once the <br /> baseline data collection is completed, then future water quality samples collected from <br /> points downgradient of the mining operations can be used to assess potential changes <br /> in water chemistry that might cause overall changes in water quality downstream. <br /> Baseline data will be collected from each monitoring well designated as a groundwater <br /> quality monitoring well. Some groundwater wells will only be used to collect water level <br /> information (piezometers). <br /> 2.1 Monitoring Well Site Selection <br /> The Rationale for monitoring well placement is presented in Table 1 . Figure 2 presents <br /> a groundwater elevation contour map that was constructed from water level data <br /> obtained from the existing monitoring wells. The average (mean) groundwater level was <br /> used to construct the groundwater elevation contour map. The groundwater levels <br /> generally followed the topographic gradient, with water flowing generally from a west- <br /> southwest and south direction to a north and northeast direction. <br /> All of the wells are (or will be) completed with a 2-inch diameter PVC casing and screen. <br /> Typically, the wells are constructed with screening across the entire water bearing zone, <br /> with solid piping to the surface completion. A sand pack of natural or washed sand is <br /> placed from the base of the well to one foot above the screened interval. A locked metal <br /> casing will cover the PVC casing from a concrete pad installed at the ground surface. <br /> The tops of the monitoring well will be encased in a lockable metal casing. Figure 3 <br /> presents a typical monitoring well installation and construction. <br /> Three new groundwater monitoring wells (MW-08, MW-11 , MW-12) will be installed as <br /> the downgradient water quality sampling points. These three downgradient water <br /> monitoring wells are considered point of compliance (POC) wells. Other wells may be <br /> installed as needed. All wells are, and will be, permitted with the State Engineers Office <br /> (SEO) Division of Water Resources All wells are and will be constructed (and <br /> abandoned) according to the SEO standards. <br /> 2.2 Water Level Monitoring <br /> Water level measurements will be made in accordance with this monitoring evaluation <br /> plan. All monitoring wells will have water level measurements on a monthly basis. <br /> Exiting wells and future wells are constructed in accordance with the typical water <br /> MOLEN LG Everist Monitoring Plan <br /> Page 3 of 5 <br />