Laserfiche WebLink
Introduction <br /> This groundwater quality monitoring plan will be implemented at the North Hangs Mine located <br /> in Garfield County, just southwest of Silt, Colorado. This plan outlines the methods that the mine <br /> operator, Western Slope Materials (WSM), will follow to protect and monitor the integrity of the <br /> local groundwater quality and quantity. This plan is intended to meet the requirements of the <br /> Division of Reclamation, Mining, and Safety (DRMS) Mineral Rules and Regulations Rule <br /> 3.1.7(7)(b) and the Colorado Department of Public Health & Environment (CDPHE) Regulation <br /> No. 41. The North Hangs site is not located on any classified areas regarding groundwater; <br /> therefore, the statewide regulations (CDPHE Regulation 41) will be followed. <br /> This monitoring plan requires the collection of pre-operational groundwater data that will be <br /> used as the baseline data to compare to the results of continued long-term groundwater <br /> monitoring. At least five quarters of monitoring data will be collected prior to operations <br /> commencing onsite. Continued monitoring will take place during operations. Results of this <br /> monitoring will be used to evaluate if any adverse impacts on groundwater have taken place as <br /> a result of the North Hangs gravel mining operations. <br /> The North Hangs Mine will directly interact with groundwater as it infiltrates freely into the pit. <br /> Groundwater will be pumped out for mining to an approved CDPHE discharge point. The <br /> interaction of groundwater by mining is not anticipated to cause any adverse impacts to <br /> groundwater as the pit itself acts as a gravel filter keeping sediments and other pollution from <br /> entering the local groundwater aquifer. Based on these conditions, sampling of water chemistry <br /> at the North Hangs Mine will be conducted on a quarterly basis. <br /> North Hangs Mine GW Monitoring <br /> Plan 1 U Lewicki& Associates <br /> December 2024 <br />