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COLORADO LEGACY LAND <br /> The text of Technical Revision 27 has been revised to include the previous Sample IDs: <br /> • Ll is"MW-13". <br /> • L2 is"MW-14". <br /> • L3 is"MW-15". <br /> • L4 is"MW-16". <br /> • L5 is"MW-17". <br /> • L6 is"MW-18". <br /> • L7 is"MW-19". <br /> • Mine Refill is "Raw Feed". <br /> 10. The Technical Revision included Table 2:Groundwater Sample Field Parameters,which provided the <br /> Operator's notes on the sampling locations.The Operator has indicated that MW-9 is not sampled since it is <br /> tied in with the sumps and MW-11 is not sampled due to bentonite in the screened interval.However,the <br /> Water Quality Data and Mine Pool Level Measurements for March 2018 submitted on May 8,2018 included <br /> analytical data for MW-9 and MW-11. Please clarify this discrepancy. <br /> Response: <br /> MW-9 and MW-11 were inadvertently sampled on May 8,2018. This sampling activity reflects a training-gap for <br /> a new employee. Since the samples were collected and analyzed,CLL reported the data along with the other <br /> required sampling locations. <br /> 11. The Division has conducted a review of the groundwater data submitted for the 1st quarter of 2018 <br /> and has found the following locations were not sampled as required:MW-6,MW-7,MW-8,MW-12 and MW-17. <br /> Please confirm the Division's findings and provide an explanation as to why these locations were not sampled <br /> or provide the missing analytical data. In addition,the Division requests the Operator review all groundwater <br /> data submitted since January 1,2018 and provide a table and provide an accounting of which sample locations <br /> were sampled during each quarter to date. <br /> Response: <br /> The following table summarizes when each sample in 2018 was collected. <br /> First Second Third Fourth <br /> Location ID Quarter Quarter Quarter Quarter <br /> /Sample ID 2018 2018 2018 2018 Notes/ Location Description <br /> Alluvial well. Above waste dumps, <br /> MW-00 dry 05/25/18 07/18/18 10/5/18 upstream of site. <br /> Alluvial well.Toe of south waste rock <br /> MW-0 dry 05/25/18 07/18/18 10/5/18 pile. <br /> Alluvial well.Next to former concrete <br /> MW-1 dry 6/15/18 8/15/18 dry containment. <br /> Alluvial well. Below retention ponds <br /> MW-2 dry dry dry dry near creek.Usually dry. <br /> Alluvial well. Near former haul road. <br /> MW-3A dry dry dry dry Usually dry. <br /> MW-4 Removed in 2008. <br /> MW-5 Removed in 2008. <br /> MW-6 dry dry dry dry Alluvial well. Near former Sump#2. <br /> MW-7 dry dry dry dry Alluvial well. Near Sump#1 <br /> PAGE 5 OF 16 <br />