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r <br /> INTEROFFICE CORRESPONDENCE <br /> Date: February 20, 1987 <br /> To: Doug Bowman <br /> From: Scott Jones <br /> Subject : Sedimentation Pond Inspection, First Quarter 1987 <br /> On February 18 and 19, 1987 an inspection was made of all <br /> Mid-Continent Resources Coal Basin Sedimentation Ponds. The <br /> inspection was made by myself, a Registered Professional Engineer <br /> in the State of Colorado. I have had over five years experience <br /> in the design , construction and maintenance of sedimentation <br /> ponds . <br /> The purpose of this inspection was to ensure that all of the <br /> ponds were stable and hazard free and to satisfy the requirements <br /> of Rules 4. 05 . 6( 11 ) (c) and 4. 05 . 9(10) (b) of the Colorado Mined <br /> Land Reclamation Division. The inspection consisted of a visual <br /> inspection of embankments , spillways and outlets and measurement <br /> of water and sediment levels and discharge volumes . Water levels <br /> are based on past survey information. Sedimentation levels were <br /> estimated based on a prodding stick and knowledge of the last <br /> clean-out date for each pond. <br /> Due to ice and snow, it was impossible to obtain sediment <br /> levels on any of the ponds . The snow pack also made general <br /> observations of the ponds difficult . <br /> Based on the above statements , I certify that the Coal Basin <br /> mine site sedimentation ponds have been inspected to the best of <br /> my ability and are in accordance with the Colorado Mined Land <br /> Reclamation Divisions Rules and Regulations . <br /> ;5:5%'�� <br /> DO R�EG <br /> James S ( '..Jones , P.*4 No . 2423� <br />