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Corey Heaps <br />CAM Colorado LLC <br />June 21, 2011 Page 10 <br />completion diagram provided in Exhibit 3. The typical completion diagram in <br />Exhibit 3 provides the most current and best available information for the four <br />active monitoring wells RW -1 through RW -4." <br />11. An As -Built Drawing is given for monitoring well RW -5 in Exhibit 14 but it apparently <br />was not included in the proposed monitoring plan and its location is not provided on any <br />other maps or plans. If RW -5 is no longer needed and will not be used in the future then <br />CAM will need to plug and abandon the well and submit the appropriate documentation <br />in accordance with Rule 4.07.3 and submit a well abandonment form to the SEO. If the <br />well will remain open for future use then CAM will need to permit the monitoring well <br />with the SEO, see Item 7 above. <br />CAM Response: Monitoring well RW -5 is not on land owned by CAM and is now <br />shown in the AVF report with a big 'X' through it. Please see revised Exhibit 14. <br />Division Response: Response accepted. <br />12. In the groundwater information section on pages 2.04 -14 &15 there is a discussion of the <br />former Gary Refining Company monitoring wells being utilized for the Fruita Loadout <br />and that groundwater samples were initially analyzed for petroleum hydrocarbons and <br />other compounds. Further, there is a discussion of low -level groundwater contamination <br />(hydrocarbons) detected in samples from two of the four monitoring wells proposed for <br />the site, but there is no mention of the source of the contamination. Although coal <br />operations do not typically produce these types of contaminants clearly documented <br />baseline conditions and future monitoring for any increases in groundwater contaminants <br />will be important. This section should be revised to include background information <br />regarding the likely source for the contamination, describe how baseline conditions have <br />been established, and how future monitoring will be utilized to detect any future increases <br />in groundwater contamination either on -site or migrating on -site. <br />CAM Response: Text has been added to pages 2.04 -16 in order to address the possible <br />source of groundwater contamination. <br />Division Response: Response accepted. <br />13. Rule 2.04.7(2)(a) requires that the baseline surface water data show seasonal variations in <br />the quantity and quality of the surface water. However, only two quarters of the baseline <br />surface water data are presented in Exhibit 3 of Volume Il. Please submit additional <br />baseline surface water data in compliance with Rule 2.04.7(2)(a). <br />CAM Response: Please see revised Exhibit 3 providing third and fourth quarter <br />monitoring data. <br />