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The sampling and monitoring methods in this plan will work to identify any impacts to the <br /> hydrologic balance once mining starts. Also, outlined in this plan are actions to take in the case <br /> that adverse impacts to the groundwater are encountered. <br /> 3. Groundwater Monitoring Plan <br /> This groundwater monitoring plan will be enacted at the North Hangs Mine to identify and <br /> quantify any potential impacts of mining to the local groundwater aquifer. <br /> 3.1 . Groundwater Points of Compliance <br /> The point of compliance (POC) at the North Hangs Mine will be used to monitor quality and <br /> quantity of groundwater during mining operations to ensure compliance with Regulation 41. This <br /> point of compliance will be downstream of mining. GW-2 and GW-3 are both potential POC's, <br /> one of which will be used for POC monitoring during mining operations. The POC will be chosen <br /> after baseline water level testing confirms which direction groundwater is flowing. The POC will <br /> be whichever point is downstream of a southwest(GW-2) or southeast (GW-3) groundwater <br /> direction. <br /> Monitoring will begin quarterly at the designated POC for the first 12 months after mining <br /> begins. If monitoring shows no adverse effects of mining at the POC, monitoring frequency may <br /> be decreased through a technical revision (TR) with the DRMS. With the division's approval, <br /> sampling frequency will be decreased to twice a year (every 6 months), or to a schedule <br /> recommended by the DRMS. Results of the quality and quantity sampling at the POC will be <br /> provided to the DRMS with the annual report. If adverse effects are identified, the DRMS will be <br /> notified immediately and WSM will start a water quality mitigation plan as advised by the DRMS. <br /> North Hangs Mine GW Monitoring <br /> Plan 7 U Lewicki 8i Associates <br /> December 2024 <br />