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REP36172
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REP36172
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Entry Properties
Last modified
8/25/2016 12:13:55 AM
Creation date
11/27/2007 7:21:19 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1981019
IBM Index Class Name
Report
Doc Date
5/12/1987
Doc Name
1986 ANNUAL Hydrology REPORT Review
From
MLRD
To
COLOWYO COAL CO
Annual Report Year
1986
Permit Index Doc Type
Hydrology Report
Media Type
D
Archive
No
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- 2 - <br />3) The 6600 N well is showing a trend of increasing SAR, which <br />measured up to 6.2 in October, 1986. The 6600 S well does not show <br />a similar increase. No impact to Goodspring Creek is evident. The <br />enclosed Piper Trilinear diagram shows that the 6600 S well is of <br />the same type water as Goodspring and Taylor Creeks. The 6600 N <br />well appears to be significantly different, and of poorer quality. <br />The enclosed stiff diagrams show that the concentrations of most <br />major constituents in well 6600 N have decreased significantly <br />since 1982. <br />Streeter Fill Stability <br />1) In the Streeter inspection report of 7/22/86, a spring was noted at <br />"the toe of fill ditch". All springs found in reclaimed areas <br />should be specifically located, noting elevation and relative <br />position. <br />Topsoil Salvage <br />1) The reouest for deletion of topsoil salvage monitoring is discussed <br />in the permit renewal adeouacy document. <br />Revegetation <br />1) Page 26 of Colowyo's 1986 annual report states that "if the current <br />shrub numbers on this 20 percent of the reclamation is weighted <br />against the shrub density on the remaining 80 percent of the <br />reclaimed area, the average density would exceed 900 stems per acre <br />overall, after one growing season." However, no shrub density data <br />is provided for this remaining 80 percent of the reclaimed area. <br />This information should be provided, if available. Also, the <br />operator should note whether the stem counts of the half-shrubs <br />(Artemisia frigida and Artimisia ludoviciana) where included in <br />t ih s density estimate. e~y sou n1~ofTieincluded since <br />half-shrubs are not normally credited when calculating shrub <br />density standards. <br />2) Colowyo has not provided any shrub density data for the 1978, 1979, <br />1980 or 1982 reclaimed areas. This information should be provided <br />and evaluated to assess the success of shrub reestablishment on <br />these areas, as well as to determine if big sagebrush is naturally <br />reinvading these areas as Colowyo has predicted that it would. <br />3) It appears from an examination of Table 6, Page 27 of the 1986 <br />annual report that the numbers of the half shrub Artemisia frigida <br />far exceed the numbers of the fu1T shrubs. Colowyo may consi~ <br />reducing the amount of fringed sage in the seed mix and/or <br />increasing the amount of the other shrubs seeds. Colowyo should <br />comment on this observation by the Division, and indicate the <br />proposed course of action. <br /> <br />
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