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W. Adequacy of CDRMS <br /> groundwater regulation Adequate <br /> monitoring 4.05.13(1) <br /> program <br /> Adequacy Questions <br /> DRMS August 2021 <br /> 1. DRM.S notes that well NE-1-10 was added to the monitoring program in 2018. In both the 2019 and 2020AHR's <br /> Table 3 Lab Analysis calls out well New-1-10 while the text refers to NE-1-10. <br /> 2. Please explain the discrepancy and if appropriate assure that future documents to avoid confusion utilize the correct <br /> terminology. <br /> 3. DRM.S notes that Section 2.05 of New Elk's permit refers to CBMproduction. This acronym is not defined and is not <br /> familiar. Please reference what the acronym CBMrefers to. <br /> 4. The inclusion in the AHR submittal of monitoring data comprising more than than the past year along with an <br /> analysis of any increasing and decreasing trends seems appropriate given the backfill in placed in the Purgatoire <br /> River. Going forward please consider include additional years of data. A discussion with DRMS as to what would be <br /> reasonable given the status of mining would be welcome. <br /> 5. As previously noted by the Division in the adequacy review of TR73, historic data from NE-1-10 should be <br /> included in the AHR together with data from the current monitoring period. <br /> Page 5 <br />