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Hernandez, Alysha <br />From: Bowles, Brock <br />Sent: Wednesday, June 06, 2012 11:38 AM <br />To: Bear, Bill <br />Cc: Brown, Sandy; Tamme Bishop; Hernandez, Daniel; DRMS - Coal -Admin <br />Subject: Abatement Extension 2.docx <br />Attachments: Abatement Extension 2.docx <br />Bill, <br />The 4 1 h abatement step in NOV 2012 -004 for Gob Pile #4 at Bowie 2 is to `restore collection <br />ditch D -D3 to the design standards' as outlined in the permit. As you are aware, the design <br />in the permit did not coincide with the conditions on the ground. Tamme Bishop of Stover <br />and Associates has been overseeing the construction of ditch D -D3 and feels that the ditch <br />is now of better quality than the one outlined in the permit. She informed me that most of <br />the changes in the design is different riprap sizing based on the slope of the ditch. We <br />agreed that the revisions for the west collection ditch on Gob Pile #4 are minor and a minor <br />revision will be submitted to address this change. <br />In the attached document, you will find the new abatement date for NOV 2012 -004 is set as <br />August 7, 2012. This date is 90 days from the date of NOV issue, which is the maximum <br />allowed by Rule 5.03.2(2)(b). This extension is allowing time for the revision review period <br />and comment periods that are required for a MR. <br />If you have any questions, please feel free to contact me. <br />Brock Bowles <br />Environmental Protection Specialist <br />Colorado Division of Reclamation, Mining and Safety <br />1313 Sherman Street, Room 215 <br />Denver, CO 80203 <br />303 - 866 -3567 ext. 8142 <br />1 <br />