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<br /> <br /> <br />4-1 <br /> <br />Section 4 <br />Groundwater Monitoring <br />Groundwater monitoring will be performed by Holcim or its selected contractor under the direction of <br />Agrium’s project manager. Analytical services for the program will be provided a certified laboratory. <br />Information regarding the responsibilities of the key personnel for the project is provided in the QAPP <br />(Appendix B). <br />4.1 Groundwater Monitoring Well Network <br />The proposed groundwater monitoring network includes 5 groundwater wells (Table 4-1 and Figure 4). <br />Four of the groundwater wells are screened in the Codell sandstone and one well is screened in the Fort <br />Hays limestone. Water level data has been collected in the RCQ groundwater wells using pressure <br />transducers since Q4 2021 and water levels will continue to be monitored. <br /> <br />Table 4-1. RCQ Groundwater Monitoring Well Information <br />Well ID Lithology <br />Northing <br />(meters) <br />Easting <br />(meters) <br />Depth <br />(ft bgs) <br />Well 1 Codell Sandstone 4238022.76 503777.96 65 <br />Well 2N Fort Hays Limestone 4238547.13 504359.11 34 <br />Well 2S Codell Sandstone 4238544.72 504358.98 58 <br />Well 3 Codell Sandstone 4237724.36 504413.34 92 <br />Well 4 Codell Sandstone 4238015.5 504450.16 70 <br /> <br />4.2 Groundwater Monitoring Schedule <br />Groundwater quality will be monitored quarterly for a minimum of five consecutive quarters. The actual <br />dates of the monitoring will depend on weather and sampling location accessibility. Groundwater and <br />surface water monitoring activities are anticipated to be conducted under the same quarterly monitoring <br />event. <br />4.3 Groundwater Monitoring Procedures <br />The groundwater monitoring activities at each well will include: <br />• Measuring the water level in the well <br />• Measuring field parameters in groundwater from each well, including: <br />− pH <br />− Temperature <br />− SC <br />− ORP <br />− DO <br />− Turbidity