2015-08-14_GENERAL DOCUMENTS - M1980183

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AFS ALBERT FREI & SONS August 10, 2015 Mr. Tyler O'Donnell Division of Reclamation, Mining & Safety 1313 Sherman St., Suite 215 Denver, CO 80215 Dear Mr. O'Donnell; RE: Brannan Sand and Gravel Pit 29 - M-1980-183 Amendment 2.2 P.O. BOX 700 HENDERSON, CO 80640 (303)289-1837 (303) 289-2865 FAX RECEIVED AUG 14 x015 Dp#UM OF fEq,AMATION, MpMNO SAFETY We are filing this objection to the Brannan Pit 29 amendment because we do not feel they have adequately address the impact their planned french drain will have on our property and our ability to control the ground water mounding around our Worthing Pit. In the July 2015 adequacy letter the Division says the historic elevations were 5005 to 5007. We believe they should be 5003 to 5005, but you propose accepting 5007 to 5009 or what the Division believes are the historic elevations. We believe the french drain should match the historic elevations as determined by the Division. In addition, there are no design plans for the splash basin or bank armoring in the area around where their discharge pipe will enter our property. In Exhibit D they submit a generic design sheet stating the material they propose to use for the riprap to be placed on the Worthing Pit. In paragraph 7 of the document, a reference is made to "Construction Plans". No such plans have been submitted to Albert Frei & Sons, Inc. for review and we found none in the Divisions records. We feel this item should be in the approved amendment to assure that the rip rap structures are designed and installed using good engineering practices to assure they work to protect our facilities. Very similar to the plans we have already submitted for the relief drain terminus next to the South Platte River. One observation we noted is that the monitoring level depths they provided, do not correlate to elevations, so there is no Cit".