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2.0 METHODS <br />• 2.1 SAMPLING DESIGN <br />Prior to initiation of fieldwork, the permit document and applicable maps were reviewed to <br />evaluate topography, reclamation timing, seed mixes, revegetation methods, management, and <br />applicable revegetation standards. <br />Numerical designations were assigned to the reclamation areas to eliminate confusion and <br />facilitate future discussions in 2002. The numbers assigned to reclamation areas are depicted <br />on the 2004 Vegetation/Revegetation Map. Only those azeas currently revegetated were <br />assigned numbers, starting in the northeast corner of the permit area and proceeding <br />clockwise through the site. As additional azeas are reclaimed and revegetated they will be <br />assigned numbers. <br />A map of the mine site at 1:2400 scale (1"=200') was used to delineate the revegetated azeas <br />(Coors Site Plan; Vegetation Sampling Locations). On a gridded overlay of the revegetation <br />map, a Cartesian coordinate grid (50x50 feet) was established. Computer generated random <br />numbers were used to establish a pool of x,y coordinates. Since the reclauned parcels for the <br />years and areas to be evaluated were non-contiguous (e.g., separated by road corridors or <br />reclamation years), each revegetated azea was gridded sepazately. The acreage of each <br />revegetated area was established. Random sample locations were established for each <br />revegetated area. Within each year's revegetation parcels, sufficient samples were established <br />• to represent each discontinuous area by proportional acreage. The following table identifies <br />and locations of each parcel quantitatively sampled, the acreage, and the number of cover and <br />herbaceous production samples taken. Additional cover sampling (above numbers usually <br />sampled during monitoring) took place in 2004 in anticipation of submittal of a Phase II bond <br />release for several of the 1995 and 1997 reclamation azea parcels. <br />• <br />Location Cover <br /># of sam les Herb. Prod <br /># of sam les <br />Os ood Sand Ref. Area 15 15 <br /> <br />1995 Reclamation Areas <br />Area 1 (7.4 ac) 4 4 <br />Area 8 (8.1 ac. 5 5 <br />Area 24 (10.5 acJ 4 4 <br />Area 26 5.6 acJ 3 3 <br />Area 27 (2.5 acJ 2 2 <br />Area 28 1.4 ac. 1 1 <br />Total Sam les 1995 Areas 19 19 <br /> <br />1997 Reclamation Areas <br />Area 3 (4.5 ac.) 4 4 <br />Area 14 1.4 ac. 1 1 <br />Area 18 8.6 ac. 7 7 <br />Area 21 (3.6 acJ 3 3 <br />Total Sam les 1997 Areas 15 15 <br />Coors Energy Company Page 2 <br />2004 Revegetation Monitoring Report <br />