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EXECUTIVE SI:fNIlVIARY <br />Quantitative sampling of areas reseeded or interseeded in 1998, the 1995 (one azea), 1999, <br />2000, 2002 and 2003 reclamation areas was conducted in August 2007. Vegetation cover, <br />total herbaceous production, and species composition were sampled. Comparisons were <br />made between total vegetation cover and total herbaceous production means from the <br />reclamation areas and predicted values calculated from the approved equations based on on- <br />site precipitation from September 2006 to July 2007. With the approval of Technical <br />Revision 37 to the approved permit, these predictive equations establish the final revegetation <br />success criteria for total vegetation cover and total herbaceous production for the mine. All <br />sampled reclamation areas exceeded the predicted value of 36.45 percent total vegetation <br />cover in this years sampling. Of the sampled reclamation areas this yeaz, only the 1999 <br />Reclamation Areas met the predicted total herbaceous production criterion of 165.33 <br />grams/square meter. Species composition of the reclamation areas was also evaluated from a <br />final success criterion perspective. As with cover and production, the species composition <br />final success criterion was revised by Technical Revision 37 to better reflect the original <br />composition of the pre-mining vegetation community. This year, the 1998 Reseeded or <br />Interseeded azeas met the species composition final success criterion. Quarterly inspections <br />of the reclamation azeas were conducted during 2007 to assess the presence and impacts of <br />pests and disease to the revegetation. No pests or diseases were identified during the 2007 <br />inspections. <br />1.0 INTRODUCTION <br />This report presents the results of the annual revegetation monitoring and pest and disease <br />inspections for the Keenesburg Mine (Colorado Division of Reclamation, Mining and Safety <br />permit C-1981-028) owned by Coors Energy Company. Quantitative information in this <br />report addresses the vegetative condition of one azea of 1995 reclamation, the 1998 reseeded <br />or interseeded areas, and the 1999, 2000, 2002, and 2003 reclamation azeas at the mine. <br />Vegetative sampling is required by the Colorado Division of Reclamation, Mining and Safety <br />(CDRMS) as part of ongoing reclamation monitoring. Vegetation sampling was performed <br />in compliance with Colorado Mined Land Reclamation Boazd Surface Coal Mining Rules <br />2.04.10 and 4.15 at the time of sampling and current botanical and plant ecological methods. <br />Field sampling was conducted between August 6 and 10, 2007 by Savage and Savage, Inc. <br />biologists. <br />The Keenesburg Mine is located in Weld County, Colorado, approximately seven (7) miles <br />north of Keenesburg, Colorado and is accessed by Weld County Road 59. Coors Energy <br />Company operated the Keenesburg Mine for coal extraction from 1980 to 1988. Reclaimed <br />areas sampled in 2006 were backfilled, graded, topsoiled and revegetated in accordance with <br />the approved mining and reclamation plan. The revegetation standazds used to evaluate these <br />azeas aze those currently in effect under the Colorado Surface Coal Mining Reclamation Act <br />(CRS 34-33-101 et seq) and the Keenesburg Mining and Reclamation Permit (C-81-028). <br />• <br />Coors Energy Comparry Keenesburg Mine Page 6 <br />2007 Revegetation Monitoring Report <br />