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2009-03-16_REVISION - C1981028 (4)
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2009-03-16_REVISION - C1981028 (4)
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Last modified
8/24/2016 3:44:26 PM
Creation date
3/17/2009 11:27:15 AM
Metadata
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Template:
DRMS Permit Index
Permit No
C1981028
IBM Index Class Name
REVISION
Doc Date
3/16/2009
Doc Name
Bond Release Application
From
Savage & Savage
To
DRMS
Type & Sequence
SL4
Email Name
JHB
Media Type
D
Archive
No
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the approved mining and reclamation plan. The revegetation standards used to evaluate these <br />areas are 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 />2.0 METHODS <br />2.1 SAMPLING DESIGN <br />Discussions with revegetation specialists at CDRMS in February 2007 formalized the <br />sampling design for the Phase III vegetation sampling at the Keenesburg Mine. Areas <br />revegetated in 1985, 1986, and 1987 would be treated as one sampling unit as would areas <br />revegetated in 1995 and 1997 as parcels within the sampling units were contiguous (or nearly <br />so), received the same seed mixes and reclamation management. <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, <br />and applicable revegetation standards. <br />A map of the mine site at 1:2400 scale (1"=200') was used to delineate the revegetated areas <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 reclaimed 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 area was gridded separately. 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 area by proportional acreage. The following table identifies the location of <br />each parcel quantitatively sampled, the acreage, and the number of cover and herbaceous <br />production samples taken. <br /> <br />Location Cover <br /># of samples) Herb. Prod. <br /># of samples) <br />1985, 1986, 1987 Reclamation Areas <br />Area 4 (15.76 ac.) 3 4 <br />Areas 11 (66.41 ac. total for 11, 12, & 13) 4 5 <br />Area 12 4 4 <br />Area 13 4 5 <br />Area 17 13.01 ac.) 2 3 <br />Area 20 16.57 ac. total for Areas 20A 22) 2 3 <br />Area 22 1 1 <br />Total Samples 1985, 1986 & 1987 Areas 20 25 <br />E <br />Coors Energy Company Keenesburg Mine Page 5 <br />2007 Phase III Vegetation Study
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