My WebLink
|
Help
|
About
|
Sign Out
Home
Browse
Search
2008-02-28_REPORT - C1981028
DRMS
>
Day Forward
>
Report
>
Coal
>
C1981028
>
2008-02-28_REPORT - C1981028
Metadata
Thumbnails
Annotations
Entry Properties
Last modified
8/24/2016 3:23:48 PM
Creation date
2/29/2008 10:58:11 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1981028
IBM Index Class Name
REPORT
Doc Date
2/28/2008
Doc Name
2007 Annual Hydrology and Reclamation Report
From
Coors Energy Company
To
DRMS
Annual Report Year
2007
Permit Index Doc Type
Hydrology Report
Media Type
D
Archive
No
There are no annotations on this page.
Document management portal powered by Laserfiche WebLink 9 © 1998-2015
Laserfiche.
All rights reserved.
/
129
PDF
Print
Pages to print
Enter page numbers and/or page ranges separated by commas. For example, 1,3,5-12.
After downloading, print the document using a PDF reader (e.g. Adobe Reader).
View images
View plain text
2.3 SAMPLE NUMBERS/SAMPLE ADEQUACY <br />For the purposes of this monitoring, set numbers of samples were established for the <br />parameters to be sampled by Savage and Savage and Coors Energy Company. The number <br />of samples taken for each reclamation yeaz was consistent with numbers agreed to in the past <br />by CDRMS. In each revegetated area, the size and number of pazcels dictated the total <br />number of samples taken, as described above. <br />Since the purpose of this sampling was the monitoring of the vegetative condition at the <br />revegetated areas of the mine, sampling need not meet sample adequacy requirements. <br />Minimum sample sizes and standazd deviation aze reported as an indication of variability of <br />the sampled parameters. Comparisons between sample mean pazameter values assume that <br />the sample mean value accurately represents the population mean in all cases. <br />2.4 SPECIES IDENTIFICATION AND VERIFICATION <br />Species identification was accomplished in the field through the use of plant identification <br />keys (Harrington, 1954, Weber, 1990; Whitson, 1987; Zimdahl, 1990, Stubbendieck, et al, <br />1995). In cases where plant identification was inconclusive in the field, voucher specimens <br />were pressed for lab identification. <br />3.0 RESULTS <br />3.1 QUANTITATIVE EVALUATION: RECLAMATION AREAS <br />3.1.1 AREA 16: 1995 RECLAMATION <br />With the exception of Area 16, all of the 1995 Reclamation Areas were released from <br />monitoring by meeting the requirements of Phase II bond release in 2004. Area 16 represents <br />a small 1.7 acre pazcel along the west boundary of areas disturbed by the mine. Area 16 is <br />flat and exhibits sheet flow drainage to the north-northeast. Soils are sandy in texture, with <br />little incorporated organic matter. One cover transect and one total herbaceous quadrat were <br />collected from Area 16 this season. <br />Total vegetation cover of Area 16 was 32.00 percent this season. Graminoids provided 22.00 <br />percent mean cover, while forbs contributed 10.00 percent mean cover. The co-dominant <br />vascular plant species of Area 16 were the annual grass Bromus tectorum (cheatgrass), <br />accounting for 10.00 percent of the mean cover and the warm season native perennial grass <br />Andropogon hallii (sand bluestem) that also provided 10.00 percent vegetative cover. Kochia <br />scoparia (kochia), provided the second highest cover with 6.00 percent mean cover. Three <br />other species contributed to vegetation cover this season; Calamovilfa longifolia (prairie <br />sandreed) accounted for 2.00 percent mean cover, as did Helianthus annuus (annual <br />sunflower) and Sisymbrium altissimum (tumble mustard). Vegetative litter (prior yeaz's <br />growth, dead wood, and other biologic organic material) comprised 30.00 percent ground <br />cover within Area 16. Bare soil comprised 38.00 percent of the ground cover encountered. <br />No rock or cryptogams were encountered during this yeaz's cover sampling. <br />Coors Energy Company Keenesburg Mine Page 1 O <br />2007 Revegetation Monitoring Report <br />
The URL can be used to link to this page
Your browser does not support the video tag.