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Bill Bear <br />Page 2 <br />11/8/2017 <br />the written narrative in the report detailing whether or not mining related impacts <br />have occurred. <br />Discharge Monitoring Reports (DMRs) are submitted to the Division on a monthly basis. There <br />were no exceedances recorded ant any of the monitoring locations during the 2016 calendar year. <br />For more detailed reviews of the DMRs for the Bowie No. 2 Mine, please see the Division's <br />quarterly DMR review letters. <br />On August 18, 2015 the Division approved TR -103 which allowed the suspension of 23 <br />monitoring points that would not be impacted until mining activities in 2018, and 15 monitoring <br />points that were no longer considered necessary due to the installation of replacement monitoring <br />points or the data was considered no longer relevant to the Bowie No. 2 Mine. Data for these <br />sites was not collected in 2016 due to no mining activity occurring in the areas of the monitoring <br />points. <br />Noted in the 2016 AHR, a new field technician and laboratory were used to collect and analyze <br />the samples collected in 2016. Data exceeding baseline parameters was thought to have been a <br />function of the new field technician and/or the new laboratory. Data collected in 2017 will be <br />compared to the 2016 data to see if any trends continue to exist or if the data will return to <br />similar values to the existing data. <br />2. During the review of the 2016 AHR it was observed that several monitoring <br />locations had recorded flows with no corresponding laboratory data. Please explain <br />in detail the reasoning for laboratory data not being conducted or included in the <br />2016 AHR. <br />3. It was also observed that the monitoring point EF -1 was missing from the report. <br />Please provide the Division with the data for EF -1 or provide an explanation of why <br />data was not collected at the monitoring point in 2016. <br />4. Monitoring well DH -67B was reported to have a broken bailer, has the bailer for <br />this well been repaired? <br />The Division has no further comments. This concludes the review of the 2016 Annual <br />Hydrology Report for the Bowie No. 2 Mine. If you have any questions, please contact me at <br />(303)-866-3567 x8144. <br />o�- C- <br />555 Street Address, Room 555, Denver, CO 55555-5555 P 555.555.5555 <br />�^e <br />" 1876 ` <br />