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1z 14802 W 44ffi Avenue <br /> Golden,Colorado 80403 <br /> Office: 303-279-6611 <br /> Fax: 303-279-6216 <br /> www.apc.us.com <br /> The Sign of Quality <br /> August 20, 2018 <br /> Department of Natural Resources <br /> Division of Reclamation, Mining and Safety <br /> 1313 Sherman Street, Room 215 <br /> Denver, CO 80203 <br /> RE: Technical Revision; Ralston Quarry—Permit M-1974-086 <br /> Mr. Scott <br /> Attached please find technical revision number 1. We have submitted our revised proposal from <br /> Ground Engineering; this incorporates the original scope plus a few added items that you and Greg <br /> Lewicki discussed at your August 14th meeting. <br /> At the recommendation of Ground Engineering APC will also have our visual monitoring posts <br /> surveyed in so we can detect any movement. We will be using Bell Engineering for the survey work <br /> involved. We have also had additional drone survey work done to help evaluate the slopes. <br /> These items should satisfy the commitments made to date by APC Construction. We will be working <br /> towards completion of the work involved with these items and have the results included in our <br /> Geotechnical report. <br /> Thanks, <br /> *1 4?.qf4-v�� <br /> Stanley C. Opperman <br /> Vice President—Operations <br /> APC Construction Co., LLC <br /> to NMI...I Asphah Pavement Association /` <br /> �obrado Asphalt <br /> Pavement AasocuCao d.e.cwmxron ..«.no„.W Cafawnnp M.Nwwrtn NuN <br />