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Savage and Savage <br />Memorandum <br />To: Donald W. MacDonald, Coors Energy Company <br />From: Michael Savage, Savage and Savage, Inc. <br />Date: June 8, 2008 <br />Subject: Second Quarter 2008 Pest and Disease Inspection; Keenesburg Mine <br />File #: C-81-028 <br />On May 29, 2008 Edith and I conducted an inspection of the operational, reclaimed, and <br />revegetated areas at the Keenesburg Mine for evidence of plant pests, noxious weeds, and <br />plant diseases that could affect the re-established vegetation at the Keenesburg Mine. <br />May precipitation, combined with recharge from winter snow, has yielded significant <br />growth in the cool season graminoid and forb components at the mine. Mountain brome, <br />Indian ricegrass, western wheatgrass, alkali sacaton, and yellow sweetclover showed <br />robust early season growth. <br />All reclaimed and revegetated areas of the mine, including the 1985, 1986, 1987, 1995, <br />1998 interseedings, 1999, 2000, 2002, and 2003 seedings were inspected by pedestrian <br />and vehicle means. The dugout area, the small cottonwood grove, the sediment pond <br />bottom and embankments, topsand piles, B Pit, and long-term overburden storage area <br />were also inspected for any potential problem areas. <br />We did not identify any disease conditions at any of the operational, reclaimed, or <br />revegetated areas of the mine site. We did not identify any plant pests which had affected <br />the growth of the vegetation during the past growing season or over the winter. No areas <br />which experienced any infestation or blight were found during the inspection. No patches <br />of noxious weed species were observed, nor were any areas observed where weeds, plant <br />pests, or disease showed a deleterious effect to the live vegetation. <br />C: Keenesburg Pest and Disease Inspection File <br />Danny Kipp, Keenesburg Mine <br />• <br />AHR-2008 -5-