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PUBLIC HIGHWAY AUTHORITY <br />Adams County, Arapahoe County, Douglas County, Cities of Aurora, Brighton, Commerce City, Thornton, and the Town of Parker, Colorado <br />May 17, 2011 <br />Division of Reclamation, Mining and Safety <br />Attn: Mr. David Bird <br />Department of Natural Resources <br />1313 Sherman St., Room 215 <br />Denver, CO 80203 <br />RECEIv D <br />Dlvlsion of Reclamation, <br />" Mining & Safety <br />Re: Minerals Program Inspection Report <br />Henderson Development <br />Permit No. M-1980-110 <br />Dear Mr. Bird: <br />The E-470 Public Highway Authority ("Authority") received your inspection report dated March 25, 2011. <br />Three observations were noted. This letter is to provide your office with an update as to the Authority's <br />progress related to your three observations. "r <br />1. Signs and Markers. A sign providing the information required under Rules 3.1.12 (1) (a), (b), <br />and (c) has been posted. An attached photograph is provided as requested as proof. <br />2. Reclamation Plan. The Authority intends to file a Technical Revision to revise the reclamation <br />plan to reflect an unlined reservoir. This should be completed sometime in the near future. <br />3. Hydrologic balance. A letter dated April 27, 2011 regarding the Authority's progress towards <br />compliance with augmentation requirements was sent to Mr. Tony Waldron. A copy of this <br />letter is provided for your use. <br />The Authority will continue to keep the Division of Reclamation, Mining and Safety appraised of its <br />progress but please feel free to contact me at 303-537-3726 if you have any specific questions. <br />Sincerely, <br />04. 60j- <br />J. Matthew Alexander <br />Director of Engineering and Roadway Maintenance <br />Attachments: Photograph and April 27, 2011 letter <br />cc: John McCuskey <br />Micheli Watson <br />d/ <br />1 3tlla} <br />22470 E. 6th Parkway, Suite 100, Aurora, Colorado 80018 (303) 537-3470 FAX (303) 537-3472